[{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20251224\/1233Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H556\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 39 of the ongoing Halema\u02bbuma\u02bbu eruption ended abruptly at 2:13 a.m. HST on December 24, 2025 after 5.9 hours of continuous fountaining (the start time was revised from 8:10 p.m. to 8:20 p.m. HST on December 23 based on tilt and tremor data).\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe north vent stopped erupting at approximately 2:00 a.m. HST. The south vent stopped erupting at approximately 2:13 a.m. HST, marking the end of the episode. Lava fountains from the south vent reached up to 1400 ft (420 m) while north vent fountains were just under 1000 feet (280 meters) around 9:30 p.m. HST on December 23. Episode 39 fountains lasted for 5.9 hours and produced an estimated 13 million cubic yards (10 million cubic meters) of lava. The combined average eruption rate was over 250 cubic yards per second (190 cubic meters per second) from the dual fountains. Lava flows from the fountains covered about 60-70% of the floor of Halema\u02bbuma\u02bbu crater.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EVolcanic gas emissions have greatly decreased. Lava flows from this episode on the floor of Halema\u02bbuma\u02bbu within the southern part of Kaluapele (K\u012blauea caldera) may continue to exhibit slow movement or incandescence as they cool and solidify over the coming days. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe U\u0113kahuna tiltmeter (UWD) recorded about 26.3 microradians of deflationary tilt during this episode. The end of the eruption was coincident with a rapid change from deflation to inflation at the summit and a decrease in seismic tremor intensity.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since the eruption started on December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/@usgs\/streams\u0022\u003Ehttps:\/\/www.youtube.com\/@usgs\/streams\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESulfur dioxide emission rate is typically 1,200-1,500 tonnes\/day between eruptive episodes\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are one hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAnother hazard closer to the vent is fallout of Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity and can be carried well over 10 miles (15 kilometers) from the vent. Other hot glassy volcanic fragments including Pele\u02bbs hair, volcanic ash, pumice, scoria, and reticulite can fall on the ground within 1-2 miles (1-3 kilometers) of the eruptive vent(s) with the highest concentrations downwind of the vent(s). Pumice and other volcanic fragments have fallen on Highway 11 west of Hawai\u02bbi Volcanoes National Park depending on wind and eruption conditions.  Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other glassy volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor K\u012blauea and will issue a VAN\/VONA at the start of the next eruptive episode. If possible, HVO will also issue a Status Report beforehand at the onset of low-level precursory activity.  Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 39 of the ongoing Halema\u02bbuma\u02bbu eruption ended abruptly at 2:13 a.m. HST on December 24, 2025.","sentUtc":"2025-12-24","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-12-24T06:47:50+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-12-24T06:47:50+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-12-24T06:47:50+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20251224\/0627Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H555\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 39 of the ongoing Halema\u02bbuma\u02bbu eruption began at 8:10 p.m. HST on 23 December. Sustained lava fountains approximately 100 feet (30 meters) in height are currently erupting from both north and south vents. Fountain heights are currently increasing.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPast episodes have produced incandescent lava fountains over 1000 feet (300 meters) high that produce eruptive plumes up to 20,000 feet (6000 meters) above ground level.  According to the National Weather Service, winds are blowing from the northeast direction, which suggests that volcanic gas emissions and volcanic material may be distributed to the southwest. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EAll eruptive activity is confined to Halema\u02bbuma\u02bbu crater within Hawai\u02bbi Volcanoes National Park; commercial airports in Hawaii County (KOA and ITO) will not be affected by this activity.\u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos that show eruptive lava fountains are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/@usgs\/streams\u0022\u003Ehttps:\/\/www.youtube.com\/@usgs\/streams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003E\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/kpcam-kilauea-summit-mauna-loa-strip-road\u0022\u003EKPcam\u003C\/a\u003E and \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/mkcam-mauna-loas-summit-and-northeast-rift-zone-mauna-kea\u0022\u003EMKcam\u003C\/a\u003E provide views of the plume height for aviation purposes\u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 39 was preceded by overflows of degassed lava that began at approximately 6:41 p.m. from the south vent and continued to increase in intensity until 8:10 p.m., when sustained fountaining began. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EInflationary tilt reached just over 32 microradians since the end of the last episode. Seismic tremor began increasing and tilt at UWD switched from inflationary to deflationary at about 8:10 p.m. HST, about the same time lava flows began erupting onto the crater floor. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EPlume in past episodes has reached up to 20,000 feet (6000 meters) above ground level, driven by incandescent lava fountains over 1000 feet (300 meters) high\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EMost volcanic ash and pumice (tephra) will fall within about 1 mile (1-2 km) of the eruptive vents. Lower concentrations of finer volcanic particles, such as ash and Pele's Hair, can be transported greater distances downwind of the vent (20 miles or 30 km). \r\n\r\nSulfur dioxide emission rate is typically 50,000 tonnes\/day during eruptive episode.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are one hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAnother hazard closer to the vent is fallout of Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity and can be carried well over 10 miles (15 kilometers) from the vent. Other hot glassy volcanic fragments including Pele\u02bbs hair, volcanic ash, pumice, scoria, and reticulite can fall on the ground within 1-2 miles (1-3 kilometers) of the eruptive vent(s) with the highest concentrations downwind of the vent(s). Pumice and other volcanic fragments have fallen on Highway 11 west of Hawai\u02bbi Volcanoes National Park depending on wind and eruption conditions.  Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other glassy volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor K\u012blauea and will issue a VAN\/VONA at the start of the next eruptive episode. If possible, HVO will also issue a Status Report beforehand at the onset of low-level precursory activity. Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 39 of the ongoing Halema\u02bbuma\u02bbu eruption began at 8:10 p.m. HST on 23 December.","sentUtc":"2025-12-24","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-12-24T04:51:29+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-12-24T04:51:29+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-12-24T04:51:29+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20251223\/2023Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAniakchak (VNUM #312090)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EGREEN\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/A775\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 56 deg 54 min W 158 deg 12 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Peninsula\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4400 ft (1341 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe Alaska Volcano Observatory (AVO) is no longer receiving data from seismic stations on Aniakchak Volcano due to an ongoing power outage at the receive facility in Port Heiden. As a result AVO unable to (1) assess whether the volcano may be building towards an eruption and (2) quickly confirm or dismiss reports of activity.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBecause this volcano is no longer seismically monitored at adequate levels, the Aviation Color Code and Volcano Alert Level are changed to UNASSIGNED\/UNASSIGNED.  As at other volcanoes without real-time seismic networks, AVO will continue to use satellite data, regional seismic, infrasound and lightning networks, and reports from pilots and ground observers to detect signs of eruptive activity.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAniakchak volcano, located in the central portion of the Alaska Peninsula, consists of a stratovolcano edifice with a 6 mile (10 km) diameter summit caldera. The caldera-forming eruption occurred around 3,500 years ago. Post-caldera eruptions have produced lava domes, tuff cones, and larger spatter and scoria cone structures, including Half-Cone and Vent Mountain, all within the caldera. The most recent eruption occurred in 1931 and created a new vent and lava flows on the western caldera floor while spreading ash over much of southwestern Alaska. Aniakchak volcano is 16 miles (26 km) southeast of the nearest community, Port Heiden, and 416 miles (670 km) southwest of Anchorage, Alaska. It is located in Aniakchak National Monument and Preserve.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EJessica Larsen, Acting Coordinating Scientist, UAF \u003Ca href=\u0022mailto:jflarsen@alaska.edu\u0022\u003Ejflarsen@alaska.edu\u003C\/a\u003E (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at \u003Ca href=\u0022https:\/\/gcc02.safelinks.protection.outlook.com\/?url=http%3A%2F%2Fwww.avo.alaska.edu%2F&data=05%7C01%7Chdietterich%40usgs.gov%7C4e428a02cf274911103408db150551b8%7C0693b5ba4b184d7b9341f32f400a5494%7C0%7C0%7C638126884815330179%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=mrKsTvh8yVAs%2FbGq6tQapOq6Q773zJjI9UTvyFMD7YE%3D&reserved=0\u0022\u003Ehttp:\/\/www.avo.alaska.edu\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Status changed to Unmonitored due to seismic station outages.  ","sentUtc":"2025-12-23","obs":"avo","vName":"Aniakchak","vnum":"312090","noticeId":"DOI-USGS-AVO-2025-12-23T18:55:56+00:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2025-12-23T18:55:56+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2025-12-23T18:55:56+00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20251207\/0708Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H537\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 38 of the ongoing Halema\u02bbuma\u02bbu eruption ended abruptly at 8:52 p.m. HST on December 6 after 12.1 hours of continuous lava fountaining.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe south vent stopped erupting at approximately 8:52 p.m. HST, marking the end of the episode. The dual north vents stopped erupting much earlier at approximately 11:50 a.m. Lava fountains reached heights of up to 1,000-1,200 ft (300-370 m) during episode 38. Fountains were down to about 400 feet (120 meters) high just before the abrupt end of the eruption. Lava fountaining lasted for 12.1 hours and produced an estimated 16 million cubic yards (12 million cubic meters) of lava. The combined average eruption rate was over 250 cubic yards per second (190 cubic meters per second) from the lava fountains.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESustained lava fountains began erupting from two vents located within the north cone at 8:45 a.m. HST on December 6 after just over 5 hours of precursory lava overflows. The south vent then began fountaining at 8:49 a.m. By 9:15 a.m. a rare triple fountain event was underway with the two north vents and the south vent all erupting together at heights of about 500 feet (150 meters). By 9:40 a.m. the south vent fountain grew to about twice as high as the north vent fountains. The highest peak or instantaneous effusion rate of 1,300 cubic yards per second (1,000 cubic meters per second) occurred just before 10 a.m. when the south vent exploded. The enlarged south vent produced an inclined fountain over 1,000 feet (300 meters) tall that sprayed the south wall of Halema\u02bbuma\u02bbu crater. Hot pumice and molten spatter from this fountain destroyed the HVO \u0022V3\u0022 streaming camera site.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ELava flows from this episode's fountains covered 50-60% of the floor of Halema\u02bbuma\u02bbu crater. Lava flows near the vents and on the floor of Halema\u02bbuma\u02bbu within the southern part of Kaluapele (K\u012blauea caldera) may continue to exhibit slow movement or incandescence as they cool and solidify over the coming days. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EVolcanic gas emissions have greatly decreased with the end of the eruption. Earlier today the gas plume reached over 20,000 feet (6000 meters) above sea level. Tephra including Pele's hair and fine ash carried in lower levels of the plume fell in the town of Pahala and other communities southwest of the vents. Satellite imagery showed the upper regions of the gas and ash cloud moved due east of the summit across lower Puna and well out to sea before turning south. Reticulite pieces up to the size of a baseball fell along Chain of Craters Road east of K\u012blauea\u02bbs summit transported by the high eastern plume. The extremely high effusion rates early in the eruption provided the gas and heat that drove this enormous plume.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe U\u0113kahuna tiltmeter (UWD) recorded about 33.1 microradians of deflationary tilt during this episode. The end of the eruption was coincident with a rapid change from deflation to inflation at the summit and a decrease in seismic tremor intensity.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMore information about the eruption can be found in earlier reports:\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003E\u003Ca href=\u0022https:\/\/volcanoes.usgs.gov\/hans-public\/notice\/DOI-USGS-HVO-2025-12-06T19:49:52+00:00\u0022\u003EStatus Report on Fountain Height and Loss of V3 camera\u003C\/a\u003E (10:41 AM HST)\u003C\/li\u003E\u003Cli\u003E\u003Ca href=\u0022https:\/\/volcanoes.usgs.gov\/hans-public\/notice\/DOI-USGS-HVO-2025-12-06T18:28:33+00:00\u0022\u003EVolcano Activity Notice for Start of Eruption\u003C\/a\u003E (8:48 AM HST)\u003C\/li\u003E\u003Cli\u003E\u003Ca href=\u0022https:\/\/volcanoes.usgs.gov\/hans-public\/notice\/DOI-USGS-HVO-2025-12-06T17:48:37+00:00\u0022\u003EK\u012blauea Update for December 6\u003C\/a\u003E (8:25 AM HST)\u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since the eruption started on December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/@usgs\/streams\u0022\u003Ehttps:\/\/www.youtube.com\/@usgs\/streams\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESulfur dioxide emission rate is typically 1,200-1,500 tonnes\/day between eruptive episodes\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are one hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAnother hazard closer to the vent is fallout of Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity and can be carried well over 10 miles (15 kilometers) from the vent. Other hot glassy volcanic fragments including Pele\u02bbs hair, volcanic ash, pumice, scoria, and reticulite can fall on the ground within 1-2 miles (1-3 kilometers) of the eruptive vent(s) with the highest concentrations downwind of the vent(s). Pumice and other volcanic fragments have fallen on Highway 11 west of Hawai\u02bbi Volcanoes National Park depending on wind and eruption conditions.  Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other glassy volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor K\u012blauea and will issue a VAN\/VONA at the start of the next eruptive episode. If possible, HVO will also issue a Status Report beforehand at the onset of low-level precursory activity.  Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 38 of the ongoing Halema\u02bbuma\u02bbu eruption ended abruptly at 8:52 p.m. HST on December 6","sentUtc":"2025-12-07","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-12-07T00:34:25+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-12-07T00:34:25+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-12-07T00:34:25+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20251206\/1848Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H535\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 38 of the ongoing Halema\u02bbuma\u02bbu eruption began at 8:45 a.m. HST on December 6 with steeping increasing tremor and decreasing tilt. Sustained lava fountains approximately 50-100 feet (15-30 meters) in height are currently erupting from the north vent. Fountain heights are increasing rapidly and are coming from both the left and right vents within the north cone..\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPast episodes have produced incandescent lava fountains over 1000 feet (300 meters) high that produce eruptive plumes up to 20,000 feet (6000 meters) above ground level. The spilt nature of the north vent suggest episode 38 may produce lower fountains similar to episode 37 when the same two vents existed in the north cone.  According to the National Weather Service, winds are blowing from the north northeast at about 10 mph (5 m\/s), which suggests that volcanic gas emissions and volcanic material may be distributed south of Halema'uma'u.. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EAll eruptive activity is confined to Halema\u02bbuma\u02bbu crater within Hawai\u02bbi Volcanoes National Park; commercial airports in Hawaii County (KOA and ITO) will not be affected by this activity.\u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos that show eruptive lava fountains are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/@usgs\/streams\u0022\u003Ehttps:\/\/www.youtube.com\/@usgs\/streams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003E\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/kpcam-kilauea-summit-mauna-loa-strip-road\u0022\u003EKPcam\u003C\/a\u003E and \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/mkcam-mauna-loas-summit-and-northeast-rift-zone-mauna-kea\u0022\u003EMKcam\u003C\/a\u003E provide views of the plume height for aviation purposes\u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 38 was preceded by small, sporadic spatter fountains and 6 precursory overflows from the north vent that began at approximately 12:50 p.m. December 5. Continuous overflows began at 3:37 a.m. HST and increased in intensity until 8:45 a.m., when sustained fountaining began. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EInflationary tilt reached just over 16.6 microradians since the end of the last episode. Seismic tremor began increasing and tilt at UWD switched from inflationary to deflationary at about 7:45 a.m. HST, about the same time increased lava output began from the north vent. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EPlume in past episodes has reached up to 20,000 feet (6000 meters) above ground level, driven by incandescent lava fountains over 1000 feet (300 meters) high\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EMost volcanic ash and pumice (tephra) will fall within about 1 mile (1-2 km) of the eruptive vents. Lower concentrations of finer volcanic particles, such as ash and Pele's Hair, can be transported greater distances downwind of the vent (20 miles or 30 km). \r\n\r\nSulfur dioxide emission rate is typically 50,000 tonnes\/day during eruptive episode.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are one hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAnother hazard closer to the vent is fallout of Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity and can be carried well over 10 miles (15 kilometers) from the vent. Other hot glassy volcanic fragments including Pele\u02bbs hair, volcanic ash, pumice, scoria, and reticulite can fall on the ground within 1-2 miles (1-3 kilometers) of the eruptive vent(s) with the highest concentrations downwind of the vent(s). Pumice and other volcanic fragments have fallen on Highway 11 west of Hawai\u02bbi Volcanoes National Park depending on wind and eruption conditions.  Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other glassy volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor K\u012blauea and will issue a VAN\/VONA at the start of the next eruptive episode. If possible, HVO will also issue a Status Report beforehand at the onset of low-level precursory activity. Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 38 of the ongoing Halema\u02bbuma\u02bbu eruption began at 8:45 a.m. HST on December 6","sentUtc":"2025-12-06","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-12-06T18:28:33+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-12-06T18:28:33+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-12-06T18:28:33+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20251126\/1025Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H513\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 37 of the ongoing Halema\u02bbuma\u02bbu eruption ended abruptly at 11:39 p.m. HST on November 25 after 9.2 hours of continuous fountaining.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe north vent stopped erupting at approximately 11:39 p.m. HST marking the end of episode 37. No lava fountains or flows erupted from the south vent during episode 37. Dual lava fountains from the north vent reached maximum heights of 500-600 ft (150-180 m). Continuous fountaining lasted for 9.2 hours and produced an estimated 8.2 million cubic yards (6.3 million cubic meters) of lava. The combined average eruption rate was over 200 cubic yards per second (190 cubic meters per second). Lava flows from the fountains covered about 75% of the floor of Halema\u02bbuma\u02bbu crater.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe eruptive plume reached heights of more than 14,000 ft (4,200 m) above sea level during episode 37. Volcanic gas emissions greatly decreased after lava fountaining ended. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe U\u0113kahuna tiltmeter (UWD) recorded about 16.5 microradians of deflationary tilt during episode 37. The end of lava fountaining was coincident with a rapid change from deflation to inflation at the summit and a decrease in seismic tremor intensity.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ELava flows from this episode on the floor of Halema\u02bbuma\u02bbu within the southern part of Kaluapele (K\u012blauea caldera) may continue to exhibit slow movement or incandescence as they cool and solidify over the coming days.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since the eruption started on December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/@usgs\/streams\u0022\u003Ehttps:\/\/www.youtube.com\/@usgs\/streams\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESulfur dioxide emission rate is typically 1,200-1,500 tonnes\/day between eruptive episodes\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are one hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAnother hazard closer to the vent is fallout of Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity and can be carried well over 10 miles (15 kilometers) from the vent. Other hot glassy volcanic fragments including Pele\u02bbs hair, volcanic ash, pumice, scoria, and reticulite can fall on the ground within 1-2 miles (1-3 kilometers) of the eruptive vent(s) with the highest concentrations downwind of the vent(s). Pumice and other volcanic fragments have fallen on Highway 11 west of Hawai\u02bbi Volcanoes National Park depending on wind and eruption conditions.  Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other glassy volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor K\u012blauea and will issue a VAN\/VONA at the start of the next eruptive episode. If possible, HVO will also issue a Status Report beforehand at the onset of low-level precursory activity.  Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 37 of the ongoing Halema\u02bbuma\u02bbu eruption ended abruptly on November 25 at 11:39 p.m. HST.","sentUtc":"2025-11-26","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-11-26T06:35:56+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-11-26T06:35:56+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-11-26T06:35:56+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20251126\/0059Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H508\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 37 of the ongoing Halema\u02bbuma\u02bbu eruption began at 2:30 p.m. HST on November 25. Sustained lava fountains approximately 400 feet (120 meters) in height are currently erupting from the north vent. Fountain heights are increasing rapidly.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPast episodes have produced incandescent lava fountains over 1000 feet (300 meters) high that produce eruptive plumes up to 20,000 feet (6000 meters) above ground level.  According to the National Weather Service, winds are light and blowing from the northeast direction, which suggests that volcanic gas emissions and volcanic material may be distributed towards the southwest, but could spread more widely. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EAll eruptive activity is confined to Halema\u02bbuma\u02bbu crater within Hawai\u02bbi Volcanoes National Park; commercial airports in Hawaii County (KOA and ITO) will not be affected by this activity.\u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos that show eruptive lava fountains are available here: \u003Ca href=\u0022https:\/\/youtube.com\/@usgs\/streams\u0022\u003Ehttps:\/\/youtube.com\/@usgs\/streams\u003C\/a\u003E \u003C\/li\u003E\u003Cli\u003E\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/kpcam-kilauea-summit-mauna-loa-strip-road\u0022\u003EKPcam\u003C\/a\u003E and \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/mkcam-mauna-loas-summit-and-northeast-rift-zone-mauna-kea\u0022\u003EMKcam\u003C\/a\u003E provide views of the plume height for aviation purposes\u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 37 was preceded by small, sporadic spatter fountains and overflows that began at approximately 9:27 a.m. HST on November 21 and alternated between the north and south vents. There were 76 overflows prior to the onset of continuous overflows on November 25 at 14:15 p.m. HST and continued until sustained fountaining began.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESeismic tremor increased significantly, and summit tilt switched from inflation to deflation at about the same time that sustained fountaining began. Inflationary tilt reached approximately 22 microradians since the end of the last episode.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EPlume in past episodes has reached up to 20,000 feet (6000 meters) above ground level, driven by incandescent lava fountains over 1000 feet (300 meters) high\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EMost volcanic ash and pumice (tephra) will fall within about 1 mile (1-2 km) of the eruptive vents. Lower concentrations of finer volcanic particles, such as ash and Pele's Hair, can be transported greater distances downwind of the vent (20 miles or 30 km). \r\n\r\nSulfur dioxide emission rate is typically 50,000 tonnes\/day during eruptive episode.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are one hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAnother hazard closer to the vent is fallout of Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity and can be carried well over 10 miles (15 kilometers) from the vent. Other hot glassy volcanic fragments including Pele\u02bbs hair, volcanic ash, pumice, scoria, and reticulite can fall on the ground within 1-2 miles (1-3 kilometers) of the eruptive vent(s) with the highest concentrations downwind of the vent(s). Pumice and other volcanic fragments have fallen on Highway 11 west of Hawai\u02bbi Volcanoes National Park depending on wind and eruption conditions.  Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other glassy volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor K\u012blauea and will issue a VAN\/VONA at the start of the next eruptive episode. If possible, HVO will also issue a Status Report beforehand at the onset of low-level precursory activity. Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 37 of the ongoing Halema\u02bbuma\u02bbu eruption began on November 25 at 2:30 p.m. HST.","sentUtc":"2025-11-26","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-11-22T01:07:11+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-11-22T01:07:11+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-11-22T01:07:11+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20251110\/0229Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H493\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 36 of the ongoing Halema\u02bbuma\u02bbu eruption ended abruptly at 4:16 p.m. HST on November 9 after just under 5 hours of continuous fountaining.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe north vent stopped erupting at approximately 3:38 p.m. HST. The south vent dropped from 1000 to 500 feet (300-150 meters) around 3:48 p.m. HST and held steady for a while. The south vent slowly declined and eventually stopped erupting at approximately 4:16 p.m. HST, marking the end of the episode. Lava fountains reached a maximum of 1000-1100 ft (300-330 m) during this episode. The episode 36 fountains lasted for just over 5 hours and produced an estimated 10-11 million cubic yards (8-9 million cubic meters) of lava. The combined average eruption rate was over 650 cubic yards per second (500 cubic meters per second) from the dual fountains, which is the highest effusion rate recorded during this eruption. Lava flows from the fountains covered about 60- 80% of the floor of Halema\u02bbuma\u02bbu crater.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EVolcanic gas emissions have greatly decreased. Lava flows from this episode on the floor of Halema\u02bbuma\u02bbu within the southern part of Kaluapele (K\u012blauea caldera) may continue to exhibit slow movement or incandescence as they cool and solidify over the coming days. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe U\u0113kahuna tiltmeter (UWD) recorded just over 23 microradians of deflationary tilt during this episode, following the beginning of fountaining at 11:19 a.m this morning. this morning. The end of the eruption was coincident with a flattening of summit tilt and a decrease in seismic tremor intensity. Past episodes have been followed by rapid inflationary tilt, and we expect that change to occur soon. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since the eruption started on December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/@usgs\/streams\u0022\u003Ehttps:\/\/www.youtube.com\/@usgs\/streams\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESulfur dioxide emission rate is typically 1,200-1,500 tonnes\/day between eruptive episodes\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are one hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAnother hazard closer to the vent is fallout of Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity and can be carried well over 10 miles (15 kilometers) from the vent. Other hot glassy volcanic fragments including Pele\u02bbs hair, volcanic ash, pumice, scoria, and reticulite can fall on the ground within 1-2 miles (1-3 kilometers) of the eruptive vent(s) with the highest concentrations downwind of the vent(s). Pumice and other volcanic fragments have fallen on Highway 11 west of Hawai\u02bbi Volcanoes National Park depending on wind and eruption conditions.  Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other glassy volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor K\u012blauea and will issue a VAN\/VONA at the start of the next eruptive episode. If possible, HVO will also issue a Status Report beforehand at the onset of low-level precursory activity.  Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 36 of the ongoing Halema\u02bbuma\u02bbu eruption ended abruptly at 4:16 p.m. HST on DATE.","sentUtc":"2025-11-10","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-11-10T01:52:38+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-11-10T01:52:38+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-11-10T01:52:38+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20251109\/2147Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H475\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ci\u003EDuring the lapse in appropriations, the USGS Hawaiian Volcano Observatory (HVO) continues to maintain monitoring networks and issue updates and notifications of volcanic activity via the\u003C\/i\u003E\u003Ca href=\u0022https:\/\/volcanoes.usgs.gov\/hans-public\/\u0022\u003E\u003Ci\u003E Hazard Notification Service\u003C\/i\u003E\u003C\/a\u003E\u003Ci\u003E. Volcano monitoring data will continue to be available on the HVO website. Static website content will not be updated until further notice and information may become outdated over time. For more information on the shutdown, please visit the Department of the Interior website at \u003C\/i\u003E\u003Ca href=\u0022http:\/\/www.doi.gov\/\u0022\u003E\u003Ci\u003Ewww.doi.gov.\u003C\/i\u003E\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 36 of the ongoing Halema\u02bbuma\u02bbu eruption began at 11:15 a.m HST on November 9 and is currently fountaining from both the north and south vents.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPast episodes have produced incandescent lava fountains over 1000 feet (300 meters) high that produce eruptive plumes up to 20,000 feet (6000 meters) above ground level.  According to the National Weather Service, winds are blowing from the northeast direction, which suggests that volcanic gas emissions and volcanic material may be distributed to the southwest of the summit of K\u012blauea.. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EAll eruptive activity is confined to Halema\u02bbuma\u02bbu crater within Hawai\u02bbi Volcanoes National Park; commercial airports in Hawaii County (KOA and ITO) will not be affected by this activity.\u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos that show eruptive lava fountains are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/watch?v=sTXKIz2NGvg\u0022\u003EV1cam\u003C\/a\u003E, \u003Ca href=\u0022https:\/\/www.youtube.com\/watch?v=fiyttmA7YkA\u0022\u003EV2cam\u003C\/a\u003E, \u003Ca href=\u0022https:\/\/www.youtube.com\/watch?v=BqmpkUdMtyA\u0022\u003EV3cam\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003E\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/kpcam-kilauea-summit-mauna-loa-strip-road\u0022\u003EKPcam\u003C\/a\u003E and \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/mkcam-mauna-loas-summit-and-northeast-rift-zone-mauna-kea\u0022\u003EMKcam\u003C\/a\u003E provide views of the plume height for aviation purposes\u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 36 was preceded by over 180 of lava overflow-drainback events at the north vent beginning on November 3 at 12:46 a.m. HST and at the south vent beginning on November 4 at 1:39 a.m. HST. At 11:15 a.m. HST fountaining began at the to increase dramatically at the north vent and began at the south vent.  Currently, fountains from the north vent are about 500 feet (150 meters) high. South vent fountains are about one third as high.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EInflationary tilt reached just over 27 microradians since the end of the last episode. Summit tilt measured at UWD switched from inflationary to deflationary at about 11:00 a.m. HST, about 15 minutes before fountains and tremor began to increase.. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EPlume in past episodes has reached up to 20,000 feet (6000 meters) above ground level, driven by incandescent lava fountains over 1000 feet (300 meters) high\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EMost volcanic ash and pumice (tephra) will fall within about 1 mile (1-2 km) of the eruptive vents. Lower concentrations of finer volcanic particles, such as ash and Pele's Hair, can be transported greater distances downwind of the vent (20 miles or 30 km). \r\n\r\nSulfur dioxide emission rate is typically 50,000 tonnes\/day during eruptive episode.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are one hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAnother hazard closer to the vent is fallout of Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity and can be carried well over 10 miles (15 kilometers) from the vent. Other hot glassy volcanic fragments including Pele\u02bbs hair, volcanic ash, pumice, scoria, and reticulite can fall on the ground within 1-2 miles (1-3 kilometers) of the eruptive vent(s) with the highest concentrations downwind of the vent(s). Pumice and other volcanic fragments have fallen on Highway 11 west of Hawai\u02bbi Volcanoes National Park depending on wind and eruption conditions.  Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other glassy volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor K\u012blauea and will issue a VAN\/VONA at the start of the next eruptive episode. If possible, HVO will also issue a Status Report beforehand at the onset of low-level precursory activity. Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 36 of the ongoing Halema\u02bbuma\u02bbu eruption began at 11:15 a.m. HST on November 9","sentUtc":"2025-11-09","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-11-04T21:23:45+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-11-04T21:23:45+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-11-04T21:23:45+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20251105\/2042Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAhyi Seamount (VNUM #284141)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUNASSIGNED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EU.S. Geological Survey\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/N67\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 20 deg 25 min E 145 deg 1 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENorthern Mariana Islands\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E-259 ft (-79 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003ESigns of unrest at Ahyi Seamount have been observed routinely in satellite data over the past few weeks. Plumes of discolored water were observed drifting up to 1 mile (1.6 km) away from the volcano in satellite images on October 20, 21, 26, 28 and November 5. Retrospective analysis of older satellite data shows weak plume activity becoming more consistent beginning September 21, following sporadic plume observations from August to early September. No significant activity has been detected from the direction of Ahyi Seamount in hydroacoustic array data at Wake Island, although submarine plumes have been observed at the volcano in the past without clear hydroacoustic signals.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe plumes of discolored water suggest ongoing submarine unrest at Ahyi Seamount. The Aviation Color Code and Volcano Alert Level are being raised to YELLOW and ADVISORY. We will continue to monitor satellite and distal hydroacoustic data for additional evidence for, or escalation of, volcanic activity.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EEruptive activity at Ahyi Seamount may present a hazard to mariners in the water above and near the volcano.\u202fThe summit has shallowed over the course of previous eruptions to 164 ft (50 m) below sea level, but the lack of local real-time data means we are unable to forecast or warn of impending eruptions. We also cannot be certain if plumes of discolored water represent vigorous hydrothermal activity or active eruptions, and it is possible that a large explosion from the seamount could breach the surface due to the decreased water depth above the vent.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENo volcanic cloud produced\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EDiscolored water observed above the seamount in satellite images.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAhyi seamount is a large conical submarine volcano that rises to within 164 ft (50 m) of the sea surface about 11 miles (18 km) southeast of Farallon de Pajaros (Uracas) Island in the northern Marianas, about 370 miles (600 km) north of the island of Saipan. In the past, discolored water has been observed over the submarine volcano. In 1979, the crew of a fishing boat felt shocks over the summit area and then observed upwelling of sulfur-bearing water. On April 24-25, 2001 an explosive submarine eruption was detected seismically from a seismic station on Rangiroa Atoll, Tuamotu Archipelago. The event was well constrained (+\/- 9 miles or 15 km) at a location near the southern base of Ahyi.\u003Cbr\u003E \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ECNMI Homeland Security and Emergency Management\u003Cbr\u003Ehttps:\/\/opd.gov.mp\/library\/agency\/homeland-security-and-emergency-management.html\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cbr\u003EUSGS Northern Mariana Duty Scientist (907) 786-7497\u003Cbr\u003Ehttp:\/\/volcano.wr.usgs.gov\/cnmistatus.php\u003Cbr\u003E\u003Cbr\u003ESatellite information, Washington VAAC\u003Cbr\u003Ehttp:\/\/www.ssd.noaa.gov\/VAAC\/washington.html\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Plumes of discolored water indicate submarine unrest. Aviation Color Code and Volcano Alert Level raised to YELLOW and ADVISORY.","sentUtc":"2025-11-05","obs":"nmi","vName":"Ahyi Seamount","vnum":"284141","noticeId":"DOI-USGS-NMI-2025-11-05T19:31:14+00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2025-11-05T19:31:14+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2025-11-05T19:31:14+00:00","nvewsThreat":"Very Low Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20251104\/2055Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAtka volcanic complex (VNUM #311160)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/A672\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 52 deg 19 min W 174 deg 8 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E5030 ft (1533 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003ENo volcanic activity has been detected at the Atka volcanic complex since the small explosion at 21:27 AKDT on October 29, 2025 (05:27 UTC October 30, 2025). The Aviation Color Code and Alert Level are being lowered to GREEN\/NORMAL. Brief explosive events at Korovin Volcano can occur without significant precursory unrest. Fallout of ash is unlikely to extend much beyond the upper flanks of the volcano. Possible ash clouds generated by such events are expected to be small and dissipate quickly.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe Atka volcanic complex forms the northern part of Atka Island, located about 16 km north of the community of Atka and 1,761 km southwest of Anchorage. The Atka volcanic complex includes a possible older caldera and several younger vents, including Korovin Volcano, Mount Kliuchef, and Sarichef Volcano. Korovin Volcano, a 1553-m-high (5030 ft) stratovolcano, has been the site of most historical volcanic activity, and has a small, roiling crater lake that occasionally produces energetic steam emissions. Korovin has erupted several times in the past 200 years, including 1973, 1987, and 1998, and has likely had small ash emissions as recently as 2005. Typical recent Korovin eruptions produce minor amounts of ash and occasional but small lava flows. Reports of the height of the ash plume produced by the 1998 eruption ranged as high as 10,600 m (35,000 feet) above sea level. Mount Kliuchef is composed of a series of five vents aligned northeast\u2013southwest. The two main summit vents of Kliuchef appear relatively young and the easternmost was probably the source of an 1812 eruption that is sometimes attributed to Sarichef.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"No further activity following small explosion last week. Aviation Color Code \/ Alert Level lowered to GREEN\/NORMAL.","sentUtc":"2025-11-04","obs":"avo","vName":"Atka volcanic complex","vnum":"311160","noticeId":"DOI-USGS-AVO-2025-11-04T20:03:01+00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2025-11-04T20:03:01+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2025-11-04T20:03:01+00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20251030\/0622Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAtka volcanic complex (VNUM #311160)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EGREEN\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/A656\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 52 deg 19 min W 174 deg 8 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E5030 ft (1533 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EA small explosion from Korovin Volcano was detected in seismic and infrasound data at 9:27 pm AKDT this evening, October 29, 2025 (5:27 UTC October 30, 2025).  The Aviation Color Code and Alert Level are being raised to YELLOW\/ADVISORY.  Brief explosive events at Korovin Volcano can occur without significant precursory unrest. Fallout of ash is unlikely to extend much beyond the upper flanks of the volcano. Possible ash clouds generated by such events are expected to be small and dissipate quickly.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe Atka volcanic complex forms the northern part of Atka Island, located about 16 km north of the community of Atka and 1,761 km southwest of Anchorage. The Atka volcanic complex includes a possible older caldera and several younger vents, including Korovin Volcano, Mount Kliuchef, and Sarichef Volcano. Korovin Volcano, a 1553-m-high (5030 ft) stratovolcano, has been the site of most historical volcanic activity, and has a small, roiling crater lake that occasionally produces energetic steam emissions. Korovin has erupted several times in the past 200 years, including 1973, 1987, and 1998, and has likely had small ash emissions as recently as 2005. Typical recent Korovin eruptions produce minor amounts of ash and occasional but small lava flows. Reports of the height of the ash plume produced by the 1998 eruption ranged as high as 10,600 m (35,000 feet) above sea level. Mount Kliuchef is composed of a series of five vents aligned northeast\u2013southwest. The two main summit vents of Kliuchef appear relatively young and the easternmost was probably the source of an 1812 eruption that is sometimes attributed to Sarichef.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Small explosion detected from Korovin.  ","sentUtc":"2025-10-30","obs":"avo","vName":"Atka volcanic complex","vnum":"311160","noticeId":"DOI-USGS-AVO-2025-10-30T05:37:49+00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2025-10-30T05:37:49+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2025-10-30T05:37:49+00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20251018\/1430Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H453\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 35 of the ongoing Halema\u02bbuma\u02bbu eruption ended abruptly at 3:32 a.m.. HST on October 18 after 7.5 hours of continuous fountaining.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe south vent stopped erupting at approximately 3:29 a.m. HST. followed by the north vent at 3:32 a.m. HST, marking the end of episode 35. Lava fountains reached up to nearly 1500 ft (460 m) during this episode from the south vent, and 1100 ft (330 m) from the north vent.  The episode 35 fountains lasted for 7.5 hours and produced an estimated 13 million cubic yards (10 million cubic meters) of lava. The combined average eruption rate was over 500 cubic yards per second (400 cubic meters per second) from the dual fountains. Lava flows from the fountains covered about two thirds of the floor of Halema\u02bbuma\u02bbu crater.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EVolcanic gas emissions have greatly decreased and are probably near normal noneruptive levels of 1,200-1,500 tonnes\/day of sulfur dioxide.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EVent areas and lava flows from this episode within Halema\u02bbuma\u02bbu may continue to exhibit slow movement and\/or incandescence as they cool and solidify over the coming days.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor more information about earlier parts of episode 35 see these notices:\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022https:\/\/volcanoes.usgs.gov\/hans-public\/notice\/DOI-USGS-HVO-2025-10-18T07:33:48+00:00\u0022\u003EUSGS Volcano Notice - DOI-USGS-HVO-2025-10-18T07:33:48+00:00\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022https:\/\/volcanoes.usgs.gov\/hans-public\/notice\/DOI-USGS-HVO-2025-10-17T05:15:25+00:00\u0022\u003EUSGS Volcano Notice - DOI-USGS-HVO-2025-10-17T05:15:25+00:00\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022https:\/\/volcanoes.usgs.gov\/hans-public\/notice\/DOI-USGS-HVO-2025-10-16T21:59:37+00:00\u0022\u003EUSGS Volcano Notice - DOI-USGS-HVO-2025-10-16T21:59:37+00:00\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe U\u0113kahuna tiltmeter (UWD) recorded about 28.5 microradians of deflationary tilt during this episode. The end of the eruption was coincident with a rapid change from deflation to inflation at the summit and a decrease in seismic tremor intensity.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since the eruption started on December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/@usgs\/streams\u0022\u003Ehttps:\/\/www.youtube.com\/@usgs\/streams\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESulfur dioxide emission rate is typically 1,200-1,500 tonnes\/day between eruptive episodes\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are one hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAnother hazard closer to the vent is fallout of Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity and can be carried well over 10 miles (15 kilometers) from the vent. Other hot glassy volcanic fragments including Pele\u02bbs hair, volcanic ash, pumice, scoria, and reticulite can fall on the ground within 1-2 miles (1-3 kilometers) of the eruptive vent(s) with the highest concentrations downwind of the vent(s). Pumice and other volcanic fragments have fallen on Highway 11 west of Hawai\u02bbi Volcanoes National Park depending on wind and eruption conditions.  Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other glassy volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor K\u012blauea and will issue a VAN\/VONA at the start of the next eruptive episode. If possible, HVO will also issue a Status Report beforehand at the onset of low-level precursory activity.  Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 35 of the ongoing Halema\u02bbuma\u02bbu eruption ended abruptly at 3:32 a.m. HST on October 18.","sentUtc":"2025-10-18","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-10-18T10:16:28+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-10-18T10:16:28+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-10-18T10:16:28+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20251018\/0635Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H450\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ci\u003EDuring the lapse in appropriations, the USGS Hawaiian Volcano Observatory (HVO) continues to maintain monitoring networks and issue updates and notifications of volcanic activity via the\u003C\/i\u003E\u003Ca href=\u0022https:\/\/volcanoes.usgs.gov\/hans-public\/\u0022\u003E\u003Ci\u003E Hazard Notification Service\u003C\/i\u003E\u003C\/a\u003E\u003Ci\u003E. Volcano monitoring data will continue to be available on the HVO website. Static website content will not be updated until further notice and information may become outdated over time. For more information on the shutdown, please visit the Department of the Interior website at \u003C\/i\u003E\u003Ca href=\u0022http:\/\/www.doi.gov\/\u0022\u003E\u003Ci\u003Ewww.doi.gov.\u003C\/i\u003E\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 35 of the ongoing Halema\u02bbuma\u02bbu eruption began at approximately 8:05 p.m. HST on October 17, 2025. Sustained lava fountains approximately 500 feet (150 meters) in height are currently erupting from the north vent. Fountain heights are increasing rapidly and angled to the northeast.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPast episodes have produced incandescent lava fountains over 1000 feet (300 meters) high that produce eruptive plumes up to 20,000 feet (6000 meters) above ground level.  According to the National Weather Service, overnight winds are blowing from the north, which suggests that volcanic gas emissions and volcanic material may be distributed south of Kilauea summit. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EAll eruptive activity is confined to Halema\u02bbuma\u02bbu crater within Hawai\u02bbi Volcanoes National Park; commercial airports in Hawaii County (KOA and ITO) will not be affected by this activity.\u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos that show eruptive lava fountains are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/watch?v=sTXKIz2NGvg\u0022\u003EV1cam\u003C\/a\u003E, \u003Ca href=\u0022https:\/\/www.youtube.com\/watch?v=fiyttmA7YkA\u0022\u003EV2cam\u003C\/a\u003E, \u003Ca href=\u0022https:\/\/www.youtube.com\/watch?v=BqmpkUdMtyA\u0022\u003EV3cam\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003E\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/kpcam-kilauea-summit-mauna-loa-strip-road\u0022\u003EKPcam\u003C\/a\u003E and \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/mkcam-mauna-loas-summit-and-northeast-rift-zone-mauna-kea\u0022\u003EMKcam\u003C\/a\u003E provide views of the plume height for aviation purposes\u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 35 was preceded by a series of lava overflow-drainback events at the south vent beginning on October 16 at 7:35 a.m. and continous lava overflows from the north vent beginning tonight at 7:28 p.m with 20-30 feet (10-15 meters) high fountains. The volume and vigor of sustained fountains and flows from the north vent increased significantly just after 8:00 p.m.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESeismic tremor increased significantly, and summit tilt switched from inflation to deflation at about the same time that sustained fountaining began. Inflationary tilt reached approximately 24 microradians since the end of the last episode.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EPlume in past episodes has reached up to 20,000 feet (6000 meters) above ground level, driven by incandescent lava fountains over 1000 feet (300 meters) high\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EMost volcanic ash and pumice (tephra) will fall within about 1 mile (1-2 km) of the eruptive vents. Lower concentrations of finer volcanic particles, such as ash and Pele's Hair, can be transported greater distances downwind of the vent (20 miles or 30 km). \r\n\r\nSulfur dioxide emission rate is typically 50,000 tonnes\/day during eruptive episode.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are one hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAnother hazard closer to the vent is fallout of Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity and can be carried well over 10 miles (15 kilometers) from the vent. Other hot glassy volcanic fragments including Pele\u02bbs hair, volcanic ash, pumice, scoria, and reticulite can fall on the ground within 1-2 miles (1-3 kilometers) of the eruptive vent(s) with the highest concentrations downwind of the vent(s). Pumice and other volcanic fragments have fallen on Highway 11 west of Hawai\u02bbi Volcanoes National Park depending on wind and eruption conditions.  Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other glassy volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor K\u012blauea and will issue a VAN\/VONA at the start of the next eruptive episode. If possible, HVO will also issue a Status Report beforehand at the onset of low-level precursory activity. Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 35 of the ongoing Halema\u02bbuma\u02bbu eruption began at approximately 8:05 p.m. HST on October 17, 2025.","sentUtc":"2025-10-18","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-10-17T05:15:25+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-10-17T05:15:25+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-10-17T05:15:25+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20251001\/1731Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H423\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 34 of the ongoing Halema\u02bbuma\u02bbu eruption ended abruptly at 7:03 a.m. HST on October 1 after just over 6 hours of continuous fountaining.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe north vent began continuous fountaining at 12:53 a.m. HST on October 1, and stopped erupting at approximately 7:03 a.m. HST, marking the end of the episode. The south vent erupted between 1:45-7:00 a.m. HST. Lava fountains from the north vent were inclined to the northeast, while lava fountains from the south vent were vertical and reached up to an estimated 1300 ft (400 m) during this episode. Approximately 8.9 million cubic yards (2.5 billion gallons) were erupted during episode 34. Volcanic gas emissions have greatly decreased. Lava flows from this episode on the floor of Halema\u02bbuma\u02bbu within the southern part of Kaluapele (K\u012blauea caldera) may continue to exhibit slow movement or incandescence as they cool and solidify over the coming days. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe U\u0113kahuna tiltmeter (UWD) recorded about 26 microradians of deflationary tilt during this episode. The end of the eruption was coincident with a rapid change from deflation to inflation at the summit and a decrease in seismic tremor intensity.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since the eruption started on December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/@usgs\/streams\u0022\u003Ehttps:\/\/www.youtube.com\/@usgs\/streams\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESulfur dioxide emission rate is typically 1,200-1,500 tonnes\/day between eruptive episodes\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are one hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAnother hazard closer to the vent is fallout of Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity and can be carried well over 10 miles (15 kilometers) from the vent. Other hot glassy volcanic fragments including Pele\u02bbs hair, volcanic ash, pumice, scoria, and reticulite can fall on the ground within 1-2 miles (1-3 kilometers) of the eruptive vent(s) with the highest concentrations downwind of the vent(s). Pumice and other volcanic fragments have fallen on Highway 11 west of Hawai\u02bbi Volcanoes National Park depending on wind and eruption conditions.  Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other glassy volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor K\u012blauea and will issue a VAN\/VONA at the start of the next eruptive episode. If possible, HVO will also issue a Status Report beforehand at the onset of low-level precursory activity.  Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 34 of the ongoing Halema\u02bbuma\u02bbu eruption ended abruptly at 7:03 a.m. HST on October 1.","sentUtc":"2025-10-01","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-10-01T17:16:06+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-10-01T17:16:06+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-10-01T17:16:06+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20251001\/1113Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H419\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 34 of the ongoing Halema\u02bbuma\u02bbu eruption began at 12:53 a.m. HST on October 1. Low lava fountains, approximately 30 feet (10 meters) high began feeding lava flows from the north vent at 11:43 p.m. HST on September 30.  Fountains began to increase in size and volume along with the onset of deflation at 12:53 a.m. HST October 1. Fountains are currently up to 330 feet or 100 meters and inclined slightly to the northeast. Past episodes have produced incandescent lava fountains over 1000 feet (300 meters) high with eruptive plumes up to 20,000 feet (6000 meters) above ground level.  According to the National Park Service and the USGS SDH monitoring station, winds are blowing moderately from the northeast direction, which suggests that volcanic gas emissions and volcanic material may be distributed to the southwest of Halema\u02bbuma\u02bbu.\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EAll eruptive activity is confined to Halema\u02bbuma\u02bbu crater within Hawai\u02bbi Volcanoes National Park; commercial airports in Hawaii County (KOA and ITO) will not be affected by this activity.\u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos that show eruptive lava fountains are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/watch?v=sTXKIz2NGvg\u0022\u003EV1cam\u003C\/a\u003E, \u003Ca href=\u0022https:\/\/www.youtube.com\/watch?v=fiyttmA7YkA\u0022\u003EV2cam\u003C\/a\u003E, \u003Ca href=\u0022https:\/\/www.youtube.com\/watch?v=BqmpkUdMtyA\u0022\u003EV3cam\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003E\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/kpcam-kilauea-summit-mauna-loa-strip-road\u0022\u003EKPcam\u003C\/a\u003E and \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/mkcam-mauna-loas-summit-and-northeast-rift-zone-mauna-kea\u0022\u003EMKcam\u003C\/a\u003E provide views of the plume height for aviation purposes\u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 34 was preceded by over 120 gas pistoning events producing small, sporadic spatter fountains 10 feet (3 meters) and many resulting in short overflows.  These events began at approximately 9:47 p.m. September 28 and continued to increase in frequency and intensity until they became rhythmic at 1:30 p.m., September 29.  The rhythmic gas pistons continued past midnight, but produced only 10 overflows in 100 events by 6:30 a.m. HST. Gas pistoning continued and magma remained high in the north vent, and additional overflows occurred from 2:22 p.m. to 6:50 p.m. HST on September 30. Sustained overflow and low-level fountaining began at 11:43 p.m. HST on September 30 with 30 foot (10 meter) fountains.  Fountaining became began increasing in height to over 60 feet (20 meters) and ground deformation of K\u012blauea summit switched from inflation to deflation at approximately 12:53 a.m. HST on October 1, indicating the episode 34 has begun. Fountains from the north vent are currently up to 330 feet or 100 meters and inclined slightly to the northeast, feeding lava flows within Halema\u02bbuma\u02bbu crater. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EInflationary tilt reached 18 microradians since the end of the last episode. Seismic tremor began increasing and tilt at UWD switched from inflationary to deflationary at about 12:53 a.m. HST. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EPlume in past episodes has reached up to 20,000 feet (6000 meters) above ground level, driven by incandescent lava fountains over 1000 feet (300 meters) high\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EMost volcanic ash and pumice (tephra) will fall within about 1 mile (1-2 km) of the eruptive vents. Lower concentrations of finer volcanic particles, such as ash and Pele's Hair, can be transported greater distances downwind of the vent (20 miles or 30 km). \r\n\r\nSulfur dioxide emission rate is typically 50,000 tonnes\/day during eruptive episode.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are one hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAnother hazard closer to the vent is fallout of Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity and can be carried well over 10 miles (15 kilometers) from the vent. Other hot glassy volcanic fragments including Pele\u02bbs hair, volcanic ash, pumice, scoria, and reticulite can fall on the ground within 1-2 miles (1-3 kilometers) of the eruptive vent(s) with the highest concentrations downwind of the vent(s). Pumice and other volcanic fragments have fallen on Highway 11 west of Hawai\u02bbi Volcanoes National Park depending on wind and eruption conditions.  Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other glassy volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor K\u012blauea and will issue a VAN\/VONA at the start of the next eruptive episode. If possible, HVO will also issue a Status Report beforehand at the onset of low-level precursory activity. Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 34 of the ongoing Halema\u02bbuma\u02bbu eruption began at 12:53 a.m. HST on October 1.","sentUtc":"2025-10-01","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-09-29T22:26:55+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-09-29T22:26:55+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-09-29T22:26:55+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250919\/2249Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H408\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 33 of the ongoing Halema\u02bbuma\u02bbu eruption ended abruptly at 12:08 p.m. HST on September 19 after just under 9 hours of continuous fountaining.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe north vent stopped erupting at approximately 12:08 p.m. HST. The south vent stopped erupting at approximately 6:00 a.m. HST this morning after a few intermittent outbursts. Lava fountains reached up to 700\u2013800 feet (210\u2013240 meters) during the early hours of the eruption, making these the highest fountains since episode 28 in July.  The north vent fountain was tilted at about 60 degrees to the east, which is less than the 30\u201345 degree tilts of the episode 31 and 32 fountains.  After the initial stages, the fountain height remained around 300\u2013400 feet (90\u2013120 meters) high during most of this episode. Approximately 8.25 million cubic yards (6.3 million cubic meters) were erupted during episode 33 and lava flows covered about 2\/3 of the floor of Halema\u02bbuma\u02bbu crater.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EVolcanic gas emissions have greatly decreased since the eruption stopped. Lava flows from this episode on the floor of Halema\u02bbuma\u02bbu, within the southern part of Kaluapele (K\u012blauea caldera), may continue to exhibit slow movement or incandescence as they cool and solidify over the coming days. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMore information about the start of the eruption can be found in this morning's VAN\/VONA.  \u003Ca href=\u0022https:\/\/volcanoes.usgs.gov\/hans-public\/notice\/DOI-USGS-HVO-2025-09-18T03:06:53+00:00\u0022\u003Ehttps:\/\/volcanoes.usgs.gov\/hans-public\/notice\/DOI-USGS-HVO-2025-09-18T03:06:53+00:00\u003C\/a\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe U\u0113kahuna tiltmeter (UWD) recorded about 16.5 microradians of deflationary tilt during this episode. The end of the episode was coincident with a rapid change from deflation to inflation at the summit and a decrease in seismic tremor intensity at 12:08 p.m. HST, at the same time fountaining stopped.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since the eruption started on December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/@usgs\/streams\u0022\u003Ehttps:\/\/www.youtube.com\/@usgs\/streams\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESulfur dioxide emission rate is typically 1,200-1,500 tonnes\/day between eruptive episodes\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are one hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAnother hazard closer to the vent is fallout of Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity and can be carried well over 10 miles (15 kilometers) from the vent. Other hot glassy volcanic fragments including Pele\u02bbs hair, volcanic ash, pumice, scoria, and reticulite can fall on the ground within 1-2 miles (1-3 kilometers) of the eruptive vent(s) with the highest concentrations downwind of the vent(s). Pumice and other volcanic fragments have fallen on Highway 11 west of Hawai\u02bbi Volcanoes National Park depending on wind and eruption conditions.  Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other glassy volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor K\u012blauea and will issue a VAN\/VONA at the start of the next eruptive episode. If possible, HVO will also issue a Status Report beforehand at the onset of low-level precursory activity.  Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 33 of the ongoing Halema\u02bbuma\u02bbu eruption ended abruptly at 12:08 p.m. HST on September 19.","sentUtc":"2025-09-19","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-09-19T22:14:28+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-09-19T22:14:28+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-09-19T22:14:28+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250919\/1340Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H404\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 33 of the ongoing Halema\u02bbuma\u02bbu eruption began at 3:11 a.m. HST on September 19 and is currently fountaining within the summit caldera. Current fountain height is greater than 500 feet (150 meters) and the convective plume is about 10,000 feet AGL (3000 meters AGL).  Past episodes have produced incandescent lava fountains over 1000 feet (300 meters) high that can produce eruptive plumes up to 20,000 feet (6000 meters) above ground level.  Wind at Sand Hill, just south of Halema\u02bbuma\u02bbu are blowing from the northeast direction, which suggests that volcanic gas emissions and volcanic material may be distributed southwest across the Ka'u desert within Hawai\u02bbi Volcanoes National Park. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EAll eruptive activity is confined to Halema\u02bbuma\u02bbu crater within Hawai\u02bbi Volcanoes National Park; commercial airports in Hawaii County (KOA and ITO) will not be affected by this activity.\u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos that show eruptive lava fountains are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/watch?v=sTXKIz2NGvg\u0022\u003EV1cam\u003C\/a\u003E, \u003Ca href=\u0022https:\/\/www.youtube.com\/watch?v=fiyttmA7YkA\u0022\u003EV2cam\u003C\/a\u003E, \u003Ca href=\u0022https:\/\/www.youtube.com\/watch?v=BqmpkUdMtyA\u0022\u003EV3cam\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003E\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/kpcam-kilauea-summit-mauna-loa-strip-road\u0022\u003EKPcam\u003C\/a\u003E and \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/mkcam-mauna-loas-summit-and-northeast-rift-zone-mauna-kea\u0022\u003EMKcam\u003C\/a\u003E provide views of the plume height for aviation purposes\u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 33 was preceded by sporadic spattering related to gas pistoning starting on September 16 and continuing into September 19th.  Small lava flows began overflowing the vent early on September 17, with overflows becoming larger on the night of September 17-18.  Dome fountains up to 10-20 feet (3-6 meters) accompanied filling and overflowing of the vent, drainback was marked by energetic bursts of gas that sent spatter 15-30 feet (5-10 meters) high and landed on the outside of the cone.  Continuous low lava fountains began at approximately 2:44 a.m. on September 19 and continued to increase in intensity until 3:11 a.m., when tilt showed deflation and seismic tremor increased sharply, marking the start of episode 33. Fountains from the north vent are reaching 500 feet (150 meters) high and feeding multiple lava streams at 3:30 a.m. HST. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EInflationary tilt reached just over 23 microradians since the end of the episode 32. Seismic tremor began increasing rapidly and tilt at UWD switched from inflationary to sharply deflationary at about 3:11 a.m. HST, about the same time fountains increased and large lava flows began erupting onto the crater floor. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ECurrent plume is 10,000 feet (3000 meters) above ground level. Plume in past episodes has reached up to 20,000 feet (6000 meters) above ground level, driven by incandescent lava fountains over 1000 feet (300 meters) high\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EMost volcanic ash and pumice (tephra) will fall within about 1 mile (1-2 km) of the eruptive vents. Lower concentrations of finer volcanic particles, such as ash and Pele's Hair, can be transported greater distances downwind of the vent (20 miles or 30 km). The direction and size of the plume will not impact local airports or scheduled commercial air traffic.\r\n\r\nSulfur dioxide emission rate is typically 50,000 tonnes\/day during eruptive episode.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are one hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAnother hazard closer to the vent is fallout of Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity and can be carried well over 10 miles (15 kilometers) from the vent. Other hot glassy volcanic fragments including Pele\u02bbs hair, volcanic ash, pumice, scoria, and reticulite can fall on the ground within 1-2 miles (1-3 kilometers) of the eruptive vent(s) with the highest concentrations downwind of the vent(s). Pumice and other volcanic fragments have fallen on Highway 11 west of Hawai\u02bbi Volcanoes National Park depending on wind and eruption conditions.  Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other glassy volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor K\u012blauea and will issue a VAN\/VONA at the start of the next eruptive episode. If possible, HVO will also issue a Status Report beforehand at the onset of low-level precursory activity. Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 33 of the ongoing Halema\u02bbuma\u02bbu eruption began at 3:11 a.m. HST on Sept 19","sentUtc":"2025-09-19","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-09-18T03:06:53+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-09-18T03:06:53+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-09-18T03:06:53+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250910\/2023Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EOkmok (VNUM #311290)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUNASSIGNED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/A552\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 53 deg 23 min W 168 deg 9 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E3520 ft (1073 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EData flow from the seismic network at Okmok volcano has been restored to allow local monitoring. The Aviation Color Code is now GREEN and the Volcano Alert Level NORMAL.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOkmok volcano is a 6-mile-wide caldera that occupies most of the eastern end of Umnak Island, located 75 miles southwest of Unalaska\/Dutch Harbor in the eastern Aleutian Islands. Okmok has had several eruptions in historic time typically consisting of ash emissions occasionally to over 30,000 feet ASL but generally much lower; lava flows crossed the caldera floor in 1945 and 1958. Prior to 2008, the volcano last erupted in February 1997 producing lava flows and intermittent ash emissions over the course of several months. The nearest settlement is Nikolski, population about 35, roughly 45 miles west of the volcano.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Local monitoring network restored. Color code \/ alert level now GREEN\/NORMAL.","sentUtc":"2025-09-10","obs":"avo","vName":"Okmok","vnum":"311290","noticeId":"DOI-USGS-AVO-2025-09-10T19:08:29+00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2025-09-10T19:08:29+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2025-09-10T19:08:29+00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250903\/0615Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H380\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 32 of the ongoing Halema\u02bbuma\u02bbu eruption ended abruptly at 8:01 p.m. HST on September 2 after 13.4 hours of continuous fountaining.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe north vent stopped erupting at approximately 7:49 p.m. HST. The smaller middle and south vents stopped erupting at approximately 8:01 p.m. HST with a few minutes of jetting, marking the end of episode 32. Lava fountains reached up to 500 ft (150 m) during this episode and averaged more than 250 cubic yards per sec (>200 cubic meters per sec) and produced over 12.5 million cubic yards (9.6 million cubic meters) of lava, the highest output for a short-lived fountain episode. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EVolcanic gas emissions have greatly decreased at the end of the eruption but were probably well in excess of 50,000 tonnes of SO\u003Csub\u003E2\u003C\/sub\u003E per day during the vigorous fountaining. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ELava flows from this episode covered 40-50% of the floor of Halema\u02bbuma\u02bbu within the southern part of Kaluapele (K\u012blauea caldera) may continue to exhibit slow movement or incandescence as they cool and solidify over the coming days. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe U\u0113kahuna tiltmeter (UWD) recorded about 25 microradians of deflationary tilt during this episode. The end of the eruption was coincident with a rapid change from deflation to inflation at the summit and a decrease in seismic tremor intensity.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMore details about the start of this episode can be found in:\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe Daily Update for K\u012blauea:\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022https:\/\/volcanoes.usgs.gov\/hans-public\/notice\/DOI-USGS-HVO-2025-09-02T18:45:21+00:00\u0022\u003EUSGS Volcano Notice - DOI-USGS-HVO-2025-09-02T18:45:21+00:00\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe VOLCANO ACTIVITY NOTICE released this morning at the onset of episode 32:\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022https:\/\/volcanoes.usgs.gov\/hans-public\/notice\/DOI-USGS-HVO-2025-09-02T16:14:39+00:00\u0022\u003Ehttps:\/\/volcanoes.usgs.gov\/hans-public\/notice\/DOI-USGS-HVO-2025-09-02T16:14:39+00:00\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe Status Report released early this morning as activity increased prior to the onset of Episode 32 fountains.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022https:\/\/volcanoes.usgs.gov\/hans-public\/notice\/DOI-USGS-HVO-2025-09-02T13:46:35+00:00\u0022\u003EUSGS Volcano Notice - DOI-USGS-HVO-2025-09-02T13:46:35+00:00\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since the eruption started on December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/@usgs\/streams\u0022\u003Ehttps:\/\/www.youtube.com\/@usgs\/streams\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EMaximum height of the convective plume observed was about 10,000 feet above ground level. Extensive clouds precluded observation of plume height later in eruption.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESulfur dioxide emission rate is typically 1,200-1,500 tonnes\/day between eruptive episodes\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are one hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAnother hazard closer to the vent is fallout of Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity and can be carried well over 10 miles (15 kilometers) from the vent. Other hot glassy volcanic fragments including Pele\u02bbs hair, volcanic ash, pumice, scoria, and reticulite can fall on the ground within 1-2 miles (1-3 kilometers) of the eruptive vent(s) with the highest concentrations downwind of the vent(s). Pumice and other volcanic fragments have fallen on Highway 11 west of Hawai\u02bbi Volcanoes National Park depending on wind and eruption conditions.  Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other glassy volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor K\u012blauea and will issue a VAN\/VONA at the start of the next eruptive episode. If possible, HVO will also issue a Status Report beforehand at the onset of low-level precursory activity.  Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 32 of the ongoing Halema\u02bbuma\u02bbu eruption ended abruptly at 8:01 p.m. HST on Sept 2, 2025.","sentUtc":"2025-09-03","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-09-02T23:41:35+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-09-02T23:41:35+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-09-02T23:41:35+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250902\/1711Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H379\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 32 of the ongoing Halema\u02bbuma\u02bbu eruption began at 6:35 a.m. HST on September 2. At that time, north vent dome fountains transitioned into taller lava fountains, which have since become inclined at about 45 degrees northeast, similar to but less inclined than those of episode 31. Current fountains are about 500 feet (150 meters) high and arcing an equivalent distance into Halema\u02bbuma\u02bbu crater. Past episodes have produced incandescent lava fountains over 1,000 feet (300 meters) high and the eruptive plume is currently 9000 feet (2700 m) above ground level up to 20,000 feet (6,000 meters) above ground level. According to the National Weather Service, winds are blowing from the northeast direction today, which suggests that volcanic gas emissions and volcanic material will be distributed to the southwest of Halema\u02bbuma\u02bbu crater. If the fountains remain inclined ash and tephra will be greatly reduced but high SO\u003Csub\u003E2\u003C\/sub\u003E gas emissions may impact communities to the south and west of K\u012blauea\u02bbs summit.\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EAll eruptive activity is confined to Halema\u02bbuma\u02bbu crater within Hawai\u02bbi Volcanoes National Park; commercial airports in Hawaii County (KOA and ITO) will not be affected by this activity.\u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos that show eruptive lava fountains are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/watch?v=sTXKIz2NGvg\u0022\u003EV1cam\u003C\/a\u003E, \u003Ca href=\u0022https:\/\/www.youtube.com\/watch?v=fiyttmA7YkA\u0022\u003EV2cam\u003C\/a\u003E, \u003Ca href=\u0022https:\/\/www.youtube.com\/watch?v=BqmpkUdMtyA\u0022\u003EV3cam\u003C\/a\u003E.\u003C\/li\u003E\u003Cli\u003E\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/kpcam-kilauea-summit-mauna-loa-strip-road\u0022\u003EKPcam\u003C\/a\u003E and \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/mkcam-mauna-loas-summit-and-northeast-rift-zone-mauna-kea\u0022\u003EMKcam\u003C\/a\u003E provide views of the plume height for aviation purposes.\u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 32 was preceded by gas pistoning cycles beginning around 8:30 p.m. HST on September 1, then intermittent overflows from the north vent began at 12:43 a.m. HST this morn. These intermittent overflows continued until 5:31 a.m. HST, when a continuous overflow began in association with low dome fountain in the vent. This dome fountain escalated in vigor around 6:35 a.m. HST when lava fountaining became taller. Rapid deflationary tilt and stronger seismic tremor began around the same time. Inclined fountains from the north vent are estimated at 500 feet (150 meters) high and feeding multiple lava streams as of 6:50 a.m. HST. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ECurrent height of the convective plume is 9000 feet above ground level.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EMost volcanic ash and pumice (tephra) will fall within about 1 mile (1\u20132 km) of the eruptive vents. Lower concentrations of finer volcanic particles, such as ash and Pele's Hair, can be transported greater distances downwind of the vent (20 miles or 30 km). \r\n\r\nSulfur dioxide emission rate is typically 50,000 tonnes\/day during eruptive episode.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are one hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAnother hazard closer to the vent is fallout of Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity and can be carried well over 10 miles (15 kilometers) from the vent. Other hot glassy volcanic fragments including Pele\u02bbs hair, volcanic ash, pumice, scoria, and reticulite can fall on the ground within 1-2 miles (1-3 kilometers) of the eruptive vent(s) with the highest concentrations downwind of the vent(s). Pumice and other volcanic fragments have fallen on Highway 11 west of Hawai\u02bbi Volcanoes National Park depending on wind and eruption conditions.  Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other glassy volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor K\u012blauea and will issue a VAN\/VONA at the start of the next eruptive episode. If possible, HVO will also issue a Status Report beforehand at the onset of low-level precursory activity. Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 32 of the ongoing Halema\u02bbuma\u02bbu eruption began at 6:35 a.m. HST on September 2.","sentUtc":"2025-09-02","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-09-02T16:14:39+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-09-02T16:14:39+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-09-02T16:14:39+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250825\/1948Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EGREEN\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/A516\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EOver the past month, signs of volcanic unrest at Shishaldin Volcano have been gradually increasing. Sulfur dioxide emissions have increased, a more vigorous vapor plume from the summit crater has been observed, and seismic and infrasound data have shown moderate increases in both the number of events and their amplitude.\u202f \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThese observations represent a departure from background behavior and the\u202f\u003Cstrong\u003EAviation Color Code and Volcano Alert Level\u003C\/strong\u003E\u202fare thus being increased to\u202f\u003Cstrong\u003EYELLOW\/ADVISORY\u003C\/strong\u003E. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAn eruption is not certain, and this unrest could eventually decline over time. In the lead up to prior eruptions of Shishaldin, heat emissions were observed in satellite data as magma approached the floor of the summit crater. We have not detected elevated surface temperatures in the summit crater or observed anything else of significance, including during helicopter overflights by an AVO field crew on August 17 and 22, to indicate that magma is rising in the conduit. \u202f \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EEruptions at Shishaldin are sometimes preceeded by days to weeks of seismic tremor (continuous shaking of the ground) that would provide warning of a possible explosive eruption.\u202f \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EGas emissions from the summit crater have at times been mistaken by observers for ash emissions under certain viewing conditions (location of the sun relative to the observer), but there is no evidence for ash deposits on the snow around the summit crater in high resolution satellite data. \u202fThe absense of ash deposits was confirmed by the close overflight observations of the summit crater made last week by an AVO field crew.\u202f \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ELocal seismic and infrasound sensors, web cameras, and a geodetic network are used to monitor Shishaldin Volcano. In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lightning data, and satellite data to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ci\u003ETo view information about Shishaldin Volcano\u003C\/i\u003E: \u003Ca href=\u0022https:\/\/www.avo.alaska.edu\/activity\/Shishaldin.php\u0022\u003Ehttps:\/\/www.avo.alaska.edu\/activity\/Shishaldin.php\u003C\/a\u003E\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Etypically less than 1000 ft above the summit\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENo ash emissions. Plume is steam and sulfur dioxide gas. \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although activity during July\u2013November, 2023 generated ash columns that reached between 30,000 ft (9 km) and 42,000 ft (13 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Unrest has increased and the Aviation Color Code and Volcano Alert Level are being increased to YELLOW\/ADVISORY.","sentUtc":"2025-08-25","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2025-08-22T22:51:56+00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2025-08-22T22:51:56+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2025-08-22T22:51:56+00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250823\/1323Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H373\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 31 of the ongoing Halema\u02bbuma\u02bbu eruption ended abruptly at 2:52 a.m. HST on August 23 after 12.6 hours of continuous fountaining.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe north vent stopped erupting at approximately 2:52 a.m. HST marking the end of episode 31. The south and intermediate vents stopped erupting earlier at approximately 12:40 a.m. and 2:46 a.m. HST. Lava fountains from the north vent reached up to 325 ft (100 m) and sustained this height during most of this episode. Fountains from the south and intermediate vents remained small, less than 33 feet (10 meters) for most of the time, but the intermediate vent fountains increased to 60-100 ft (20-30 m) by the evening of August 22.  Approximately 10,900,000 cubic yards (8,400,000 cubic meters) of lava were erupted at an average of 240 cubic yards per second (185 cubic meters per second) during the fountaining phase. Lava flows from this episode covered more than 75% of the floor of Halema\u02bbuma\u02bbu within the southern part of Kaluapele (K\u012blauea caldera) and may continue to exhibit slow movement or incandescence as they cool and solidify over the coming days.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EVoluminous fountaining was preceded by continuous spattering in the north vent that began at approximately 8:30 a.m. HST and continued to increase in intensity until 11:45 a.m. HST, when sustained lava overflows began. During this period, a cone was built inside the north vent sealing off part of the old vent.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFountaining in the north vent began increasing significantly at 2:04 p.m. HST accompanied by deflationary tilt and increasing tremor.  The north vent transitioned to an arcuate fountain approximately 100 feet (30 meters) high feeding multiple lava streams at 2:18 p.m. HST corresponding with the change to steep deflation and high tremor.  Sometime around 4-5 p.m. HST, low spatter fountains began to feed a small flow from the south vent.  At 7:23 p.m. HST, a new intermediate vent opened up in the area of glowing cracks between the north and south vents.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EVolcanic gas emissions have greatly decreased since the end of the episode. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe U\u0113kahuna tiltmeter (UWD) recorded about 22 microradians of deflationary tilt during this episode. The end of the eruption was coincident with a rapid change from deflation to inflation at the summit and a decrease in seismic tremor intensity.       \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since the eruption started on December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/@usgs\/streams\u0022\u003Ehttps:\/\/www.youtube.com\/@usgs\/streams\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESulfur dioxide emission rate is typically 1,200-1,500 tonnes\/day between eruptive episodes\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are one hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAnother hazard closer to the vent is fallout of Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity and can be carried well over 10 miles (15 kilometers) from the vent. Other hot glassy volcanic fragments including Pele\u02bbs hair, volcanic ash, pumice, scoria, and reticulite can fall on the ground within 1-2 miles (1-3 kilometers) of the eruptive vent(s) with the highest concentrations downwind of the vent(s). Pumice and other volcanic fragments have fallen on Highway 11 west of Hawai\u02bbi Volcanoes National Park depending on wind and eruption conditions.  Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other glassy volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor K\u012blauea and will issue a VAN\/VONA at the start of the next eruptive episode. If possible, HVO will also issue a Status Report beforehand at the onset of low-level precursory activity.  Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 31 of the ongoing Halema\u02bbuma\u02bbu eruption ended abruptly at 2:52 a.m.HST on August 23.","sentUtc":"2025-08-23","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-08-23T10:15:31+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-08-23T10:15:31+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-08-23T10:15:31+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250823\/0016Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H372\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 31 of the ongoing Halema\u02bbuma\u02bbu eruption began at 2:04 p.m. HST on August 22 and is currently fountaining from the north vent. Past episodes have produced incandescent lava fountains over 1000 feet (300 meters) high that produce eruptive plumes up to 20,000 feet (6000 meters) above ground level.  According to the National Weather Service, winds are blowing from the northeast at 15-20 miles per hour (8 meters per second), which suggests that volcanic gas emissions and volcanic material may be distributed to the south and southwest of the summit caldera. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EAll eruptive activity is confined to Halema\u02bbuma\u02bbu crater within Hawai\u02bbi Volcanoes National Park; commercial airports in Hawaii County (KOA and ITO) will not be affected by this activity.\u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos that show eruptive lava fountains are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/watch?v=sTXKIz2NGvg\u0022\u003EV1cam\u003C\/a\u003E, \u003Ca href=\u0022https:\/\/www.youtube.com\/watch?v=fiyttmA7YkA\u0022\u003EV2cam\u003C\/a\u003E, \u003Ca href=\u0022https:\/\/www.youtube.com\/watch?v=BqmpkUdMtyA\u0022\u003EV3cam\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003E\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/kpcam-kilauea-summit-mauna-loa-strip-road\u0022\u003EKPcam\u003C\/a\u003E and \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/mkcam-mauna-loas-summit-and-northeast-rift-zone-mauna-kea\u0022\u003EMKcam\u003C\/a\u003E provide views of the plume height for aviation purposes\u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 31 was preceded by continuous spatter in the north vent that began at approximately 8:30 a.m. and continued to increase in intensity until 11:45 a.m., when precursory lava overflows began. Fountaining the north vent began at 2:04 p.m. and and arcuate fountain approximately 100 feet (30 meters) high is feeding multiple lava streams at 2:15 p.m. HST. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EInflationary tilt reached just over 22 microradians since the end of the last episode. Seismic tremor began increasing and tilt at UWD switched from inflationary to deflationary at about 2:00 p.m. HST, about the same time lava flows began erupting onto the crater floor. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EPlume in past episodes has reached up to 20,000 feet (6000 meters) above ground level, driven by incandescent lava fountains over 1000 feet (300 meters) high\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EMost volcanic ash and pumice (tephra) will fall within about 1 mile (1-2 km) of the eruptive vents. Lower concentrations of finer volcanic particles, such as ash and Pele's Hair, can be transported greater distances downwind of the vent (20 miles or 30 km). \r\n\r\nSulfur dioxide emission rate is typically 50,000 tonnes\/day during eruptive episode.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are one hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAnother hazard closer to the vent is fallout of Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity and can be carried well over 10 miles (15 kilometers) from the vent. Other hot glassy volcanic fragments including Pele\u02bbs hair, volcanic ash, pumice, scoria, and reticulite can fall on the ground within 1-2 miles (1-3 kilometers) of the eruptive vent(s) with the highest concentrations downwind of the vent(s). Pumice and other volcanic fragments have fallen on Highway 11 west of Hawai\u02bbi Volcanoes National Park depending on wind and eruption conditions.  Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other glassy volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor K\u012blauea and will issue a VAN\/VONA at the start of the next eruptive episode. If possible, HVO will also issue a Status Report beforehand at the onset of low-level precursory activity. Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 31 of the ongoing Halema\u02bbuma\u02bbu eruption began at 2:04 p.m. HST on August 22.","sentUtc":"2025-08-23","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-08-22T22:03:31+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-08-22T22:03:31+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-08-22T22:03:31+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250820\/1807Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESpurr (VNUM #313040)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/A510\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 61 deg 17 min W 152 deg 15 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ECook Inlet-South Central\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E11070 ft (3374 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EOver the past several months, signs of volcanic unrest at Mount Spurr\u2014including small earthquakes, gas emissions, melting ice, and surface changes\u2014have been gradually decreasing. No ground deformation has been detected since March 2025. Taken together, this means that the movement of magma toward the surface, which began in early 2024, has stopped. As a result, the chances of an eruption in the near-term are now considered extremely low.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBecause of this, the Alaska Volcano Observatory (AVO) is lowering the \u003Cstrong\u003EAviation Color Code to GREEN\u003C\/strong\u003E and the \u003Cstrong\u003EVolcano Alert Level to NORMAL\u003C\/strong\u003E, indicating that the volcano is currently quiet.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESmall earthquakes are still occurring more frequently than before the unrest began in February 2024, and volcanic gases are still being released from the summit crater and the Crater Peak vent on the south flank of the volcano. This is normal for volcanoes where magma has moved upward but has not erupted. Minor gas emissions and a slightly higher number of small earthquakes could persist for many months to several years. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAlthough the potential for an eruption occurring in the near-term has passed, the volcano poses hazards for recreators on Mount Spurr. High levels of carbon dioxide gas detected on the rim of Crater Peak suggest that hazardous amounts of this odorless and colorless gas may be present within the crater, but not in local communities.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMount Spurr volcano is an ice- and snow-covered stratovolcano located on the west side of Cook Inlet approximately 120 km (75 mi) west of Anchorage. The only known historical eruptions occurred in 1953 and 1992 from the Crater Peak flank vent located 3.5 km (2 mi) south of the summit of Mount Spurr. These eruptions were brief, explosive, and produced columns of ash that rose up to 20 km (65,000 ft) above sea level and deposited several mm of ash in south-central Alaska, including approximately 6 mm (1\/4 in) of ash on Anchorage in 1953. The last known eruption from the summit of Mount Spurr was more than 5,000 years ago. Primary hazards during future eruptions include far-traveled ash clouds, ash fall, pyroclastic flows, and lahars or mudflows that could inundate drainages all sides of the volcano, but primarily on the south and east flanks.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMichelle Coombs, Acting Scientist-in-Charge, USGS mcoombs@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Volcanic unrest has decreased over past several months. Aviation Color Code and Volcano Alert Level decreased to GREEN\/NORMAL","sentUtc":"2025-08-20","obs":"avo","vName":"Spurr","vnum":"313040","noticeId":"DOI-USGS-AVO-2025-08-19T21:03:20+00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2025-08-19T21:03:20+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2025-08-19T21:03:20+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250806\/2323Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H347\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 30 of the ongoing Halema\u02bbuma\u02bbu eruption ended abruptly at 12:55 p.m. HST on August 6 after 12 hours of continuous fountaining. Lava flows continued to drain down the north cone for about 5 minutes after fountaining ceased.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe north vent stopped vigorous fountaining at approximately 12:55 p.m. HST marking the end of the episode. The south vent stopped erupting at approximately 12:50 p.m. HST, Lava fountains reached up to 300 ft (90 m) during this episode.  A new fissure vent that transected the south wall of Halema\u02bbuma\u02bbu ceased erupting at 4:40 a.m. HST on the morning of August 6. Volcanic gas emissions have greatly decreased. Lava flows from this episode on the floor of Halema\u02bbuma\u02bbu within the southern part of Kaluapele (K\u012blauea caldera) may continue to exhibit slow movement or incandescence as they cool and solidify over the coming days. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe U\u0113kahuna tiltmeter (UWD) recorded about 22.5 microradians of deflationary tilt during this episode. The end of the eruption was coincident with a rapid change from deflation to inflation at the summit and a decrease in seismic tremor intensity.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since the eruption started on December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/@usgs\/streams\u0022\u003Ehttps:\/\/www.youtube.com\/@usgs\/streams\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESulfur dioxide emission rate is typically 1,200-1,500 tonnes\/day between eruptive episodes\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are one hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAnother hazard closer to the vent is fallout of Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity and can be carried well over 10 miles (15 kilometers) from the vent. Other hot glassy volcanic fragments including Pele\u02bbs hair, volcanic ash, pumice, scoria, and reticulite can fall on the ground within 1-2 miles (1-3 kilometers) of the eruptive vent(s) with the highest concentrations downwind of the vent(s). Pumice and other volcanic fragments have fallen on Highway 11 west of Hawai\u02bbi Volcanoes National Park depending on wind and eruption conditions.  Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other glassy volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor K\u012blauea and will issue a VAN\/VONA at the start of the next eruptive episode. If possible, HVO will also issue a Status Report beforehand at the onset of low-level precursory activity.  Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 30 of the ongoing Halema\u02bbuma\u02bbu eruption ended abruptly at 12:55 p.m. HST on August 6","sentUtc":"2025-08-06","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-08-06T22:13:18+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-08-06T22:13:18+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-08-06T22:13:18+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250806\/1206Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H345\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 30 vigorous fountaining of the ongoing Halema\u02bbuma\u02bbu eruption began at approximately 1:20 a.m. HST on august 6 and is currently producing broad fountains150-300 feet (45-90 meters) high from the north vent.  Lava flows from the north vent have covered about 20% of the floor of Halema\u02bbuma\u02bbu crater.  There is a line of small fountains that formed south of the old south vent area that are producing lower volume flows. This appears to be a new vent for this eruption and seems to be associated with a cluster of small earthquakes just south of Halema\u02bbuma\u02bbu.  Past episodes have produced incandescent lava fountains over 1000 feet (300 meters) high that produce eruptive plumes up to 20,000 feet (6000 meters) above ground level.  According to the National Weather Service, winds are light and variable from the north direction, which suggests that volcanic gas emissions and volcanic material may be distributed to the south but may fall in a broader pattern than during typical trade winds. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EAll eruptive activity is confined to Halema\u02bbuma\u02bbu crater within Hawai\u02bbi Volcanoes National Park; commercial airports in Hawaii County (KOA and ITO) will not be affected by this activity.\u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos that show eruptive lava fountains are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/watch?v=sTXKIz2NGvg\u0022\u003EV1cam\u003C\/a\u003E, \u003Ca href=\u0022https:\/\/www.youtube.com\/watch?v=fiyttmA7YkA\u0022\u003EV2cam\u003C\/a\u003E, \u003Ca href=\u0022https:\/\/www.youtube.com\/watch?v=BqmpkUdMtyA\u0022\u003EV3cam\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003E\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/kpcam-kilauea-summit-mauna-loa-strip-road\u0022\u003EKPcam\u003C\/a\u003E and \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/mkcam-mauna-loas-summit-and-northeast-rift-zone-mauna-kea\u0022\u003EMKcam\u003C\/a\u003E provide views of the plume height for aviation purposes\u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 30 was preceded by spatter fountains and vigorous overflows that began at approximately 12:56 a.m. and continued to increase in intensity until about 1:20 a.m., when sustained, energetic fountaining began. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EInflationary tilt reached just over 19 microradians since the end of the last episode. Seismic tremor began increasing and tilt at UWD switched from inflationary to  deflationary at about 12:56 a.m HST, about the same time lava flows began erupting onto the crater floor.  Strong tremor and increased deflation accompanied the onset of vigorous sustained fountaining at about 1:20 a.m. HST.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESome unusual earthquakes within Kaluapele, the summit caldera, just south of the vents within Halema\u02bbuma\u02bbu have accompanied the start of this eruption. No changes have been detected in the East Rift Zone or Southwest Rift Zone. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EPlume in past episodes has reached up to 20,000 feet (6000 meters) above ground level, driven by incandescent lava fountains over 1000 feet (300 meters) high\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EMost volcanic ash and pumice (tephra) will fall within about 1 mile (1-2 km) of the eruptive vents. Lower concentrations of finer volcanic particles, such as ash and Pele's Hair, can be transported greater distances downwind of the vent (20 miles or 30 km). \r\n\r\nSulfur dioxide emission rate is typically 50,000 tonnes\/day during eruptive episode.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are one hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAnother hazard closer to the vent is fallout of Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity and can be carried well over 10 miles (15 kilometers) from the vent. Other hot glassy volcanic fragments including Pele\u02bbs hair, volcanic ash, pumice, scoria, and reticulite can fall on the ground within 1-2 miles (1-3 kilometers) of the eruptive vent(s) with the highest concentrations downwind of the vent(s). Pumice and other volcanic fragments have fallen on Highway 11 west of Hawai\u02bbi Volcanoes National Park depending on wind and eruption conditions.  Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other glassy volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor K\u012blauea and will issue a VAN\/VONA at the start of the next eruptive episode. If possible, HVO will also issue a Status Report beforehand at the onset of low-level precursory activity. Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 30 fountaining of the ongoing Halema\u02bbuma\u02bbu eruption began at 1:20 a.m HST on August 6.","sentUtc":"2025-08-06","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-08-06T11:30:06+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-08-06T11:30:06+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-08-06T11:30:06+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250724\/0047Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAhyi Seamount (VNUM #284141)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EU.S. Geological Survey\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/N47\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 20 deg 25 min E 145 deg 1 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENorthern Mariana Islands\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E-259 ft (-79 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EAhyi Seamount has been erupting intermittently since October 2022 with a declining intensity with time. The latest phase of activity has produced visible plumes of discolored seawater observed sporadically in satellite images since August 2024. No significant seismic or explosive activity has been observed on regional hydroacoustic sensors during this time. The last observed plume was about 98 ft (30 m) across directly above the seamount on May 28, 2025. Currently, there is no sign of continued submarine eruptive activity. Due to this cessation of activity, the Aviation Color Code and Volcano Alert Level are both lowered to UNASSIGNED. More details will be provided as an Information Statement issued by the Alaska Volcano Observatory.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EWe will continue to monitor satellite and distal hydroacoustic data for evidence for renewed volcanic activity.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAhyi seamount is a large conical submarine volcano that rises to within 164 ft (50 m) of the sea surface about 11 miles (18 km) southeast of Farallon de Pajaros (Uracas) Island in the northern Marianas, about 370 miles (600 km) north of the island of Saipan. In the past, discolored water has been observed over the submarine volcano. In 1979, the crew of a fishing boat felt shocks over the summit area and then observed upwelling of sulfur-bearing water. On April 24-25, 2001 an explosive submarine eruption was detected seismically from a seismic station on Rangiroa Atoll, Tuamotu Archipelago. The event was well constrained (+\/- 9 miles or 15 km) at a location near the southern base of Ahyi.\u003Cbr\u003E \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ECNMI Homeland Security and Emergency Management\u003Cbr\u003Ehttps:\/\/opd.gov.mp\/library\/agency\/homeland-security-and-emergency-management.html\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cbr\u003EUSGS Northern Mariana Duty Scientist (907) 786-7497\u003Cbr\u003Ehttp:\/\/volcano.wr.usgs.gov\/cnmistatus.php\u003Cbr\u003E\u003Cbr\u003ESatellite information, Washington VAAC\u003Cbr\u003Ehttp:\/\/www.ssd.noaa.gov\/VAAC\/washington.html\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"No sign of continued submarine eruption; Aviation Color Code and Volcano Alert Level lowered to UNASSIGNED.","sentUtc":"2025-07-24","obs":"nmi","vName":"Ahyi Seamount","vnum":"284141","noticeId":"DOI-USGS-NMI-2025-07-23T23:35:09+00:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2025-07-23T23:35:09+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2025-07-23T23:35:09+00:00","nvewsThreat":"Very Low Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250721\/0459Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H322\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 29 of the ongoing Halema\u02bbuma\u02bbu eruption ended abruptly around 6:35 p.m. HST on July 20 after over 13 hours of continuous lava fountaining.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe north vent stopped erupting around 6:35 p.m. HST, marking the end of the episode; the weakly-active south vent had stopped erupting several hours earlier. Lava fountains did not exceed 330 feet (100 meters) during this episode, as most lava was sprayed laterally within Halema\u02bbuma\u02bbu crater. An estimated 1.8 billion gallons (7 million cubic meters) of lava erupted during the episode, covering approximately 80% of the crater floor.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EVolcanic gas emissions have greatly decreased since fountaining stopped, and the sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E) emission rate will likely range from 1,200\u20131,500 tonnes\/day during the new eruptive pause. Spatter deposits and lava flows from this episode on the floor of Halema\u02bbuma\u02bbu within the southern part of Kaluapele (K\u012blauea caldera) may continue to exhibit slow movement and\/or incandescence as they cool and solidify over the coming days. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe U\u0113kahuna tiltmeter (UWD) recorded approximately 18.5 microradians of deflationary tilt during this episode. The end of the episode was coincident with a rapid change from deflation to inflation at the summit and a decrease in seismic tremor intensity.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since the eruption started on December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/@usgs\/streams\u0022\u003Ehttps:\/\/www.youtube.com\/@usgs\/streams\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. HVO continues to closely monitor K\u012blauea and will issue a VAN\/VONA at the start of the next eruptive episode. If possible, HVO will also issue a Status Report beforehand at the onset of low-level precursory activity. Between episodes, daily updates will be published each morning as regularly scheduled.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESulfur dioxide emission rate is typically 1,200\u20131,500 tonnes\/day between eruptive episodes.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are one hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAnother hazard closer to the vent is fallout of Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity and can be carried well over 10 miles (15 kilometers) from the vent. Other hot glassy volcanic fragments including Pele\u02bbs hair, volcanic ash, pumice, scoria, and reticulite can fall on the ground within 1-2 miles (1-3 kilometers) of the eruptive vent(s) with the highest concentrations downwind of the vent(s). Pumice and other volcanic fragments have fallen on Highway 11 west of Hawai\u02bbi Volcanoes National Park depending on wind and eruption conditions. Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other glassy volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA VAN\/VONA will be issued at the start of the next eruptive episode. Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 29 of the ongoing Halema\u02bbuma\u02bbu eruption ended abruptly around 6:35 p.m. HST on July 20.","sentUtc":"2025-07-21","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-07-20T18:43:54+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-07-20T18:43:54+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-07-20T18:43:54+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250720\/1529Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H320\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 29 high fountains of the ongoing Halema\u02bbuma\u02bbu eruption began around 5:15 a.m. HST on July 20. Lava fountains from the north vent gradually transitioned from low dome fountains less than 100 feet (30 meters high) to vertical fountains exceeding 200 feet (60 meters) around that time, accompanied by the onset of summit deflationary tilt and heightened seismic tremor. Past episodes have produced incandescent lava fountains over 1,000 feet (300 meters) high and eruptive plumes up to 20,000 feet (6,000 meters) above ground level; similar behavior may be expected within the next couple hours.  According to the National Weather Service, winds are blowing from the north to northeast directions today, Sunday, July 20, which suggests that volcanic gas emissions and volcanic material may be distributed to the south and southwest. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EAll eruptive activity is confined to Halema\u02bbuma\u02bbu crater within Hawai\u02bbi Volcanoes National Park; commercial airports in Hawaii County (KOA and ITO) will not be affected by this activity.\u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos that show eruptive lava fountains are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/watch?v=oG5zz9Sjw3E\u0022\u003EV1cam\u003C\/a\u003E, \u003Ca href=\u0022https:\/\/www.youtube.com\/watch?v=fiyttmA7YkA\u0022\u003EV2cam\u003C\/a\u003E, \u003Ca href=\u0022https:\/\/www.youtube.com\/watch?v=BqmpkUdMtyA\u0022\u003EV3cam\u003C\/a\u003E.\u003C\/li\u003E\u003Cli\u003E\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/kpcam-kilauea-summit-mauna-loa-strip-road\u0022\u003EKPcam\u003C\/a\u003E and \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/mkcam-mauna-loas-summit-and-northeast-rift-zone-mauna-kea\u0022\u003EMKcam\u003C\/a\u003E provide views of the plume height for aviation purposes.\u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 29 was preceded by north vent lava spattering that began around 3:55 a.m., followed shortly thereafter by dome fountains and lava overflows starting around 4:11 a.m. Fountains from the north vent are reaching 330 feet (100 meters) high and feeding multiple lava streams as of 5:25 a.m. HST. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EInflationary tilt reached just over 17.5 microradians since the end of episode 28, during which it recorded 15 microradians of deflationary tilt. Seismic tremor began increasing and tilt at UWD switched from inflationary to deflationary at about 4:24 a.m. HST. Further sharp increases in tremor and deflation occurred when sustained high lava fountains began. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. A VAN\/VONA will be issued when sustained lava fountaining ceases and the eruption is paused, or earlier if the situation warrants a further update.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EPlume in past episodes has reached up to 20,000 feet (6,000 meters) above ground level, driven by incandescent lava fountains over 1,000 feet (300 meters) high.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EMost volcanic ash and pumice (tephra) will fall within about 1 mile (1\u20132 kilometers) of the eruptive vents. Lower concentrations of finer volcanic particles, such as ash and Pele's Hair, can be transported greater distances downwind of the vent (20 miles or 30 kilometers). \r\n\r\nSulfur dioxide emission rate is typically 50,000 tonnes\/day during eruptive episode.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are one hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAnother hazard closer to the vent is fallout of Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity and can be carried well over 10 miles (15 kilometers) from the vent. Other hot glassy volcanic fragments including Pele\u02bbs hair, volcanic ash, pumice, scoria, and reticulite can fall on the ground within 1-2 miles (1-3 kilometers) of the eruptive vent(s) with the highest concentrations downwind of the vent(s). Pumice and other volcanic fragments have fallen on Highway 11 west of Hawai\u02bbi Volcanoes National Park depending on wind and eruption conditions.  Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other glassy volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u003C\/a\u003E.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA VAN\/VONA will be issued when sustained lava fountaining ceases and the eruption is paused, or earlier if the situation warrants a further update. Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 29 high fountains of the ongoing Halema\u02bbuma\u02bbu eruption began around 5:15 a.m. HST on July 20.","sentUtc":"2025-07-20","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-07-19T02:53:39+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-07-19T02:53:39+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-07-19T02:53:39+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250709\/2349Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H308\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 28 of the ongoing Halema\u02bbuma\u02bbu eruption ended abruptly at 1:20 p.m. HST on July 9, 2025, after 9 hours of continuous fountaining, the final 8 of which were high fountaining.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe north vent stopped erupting at approximately 1:20 p.m. HST, marking the end of the episode. The south vent did not appear to activate at all during this episode and has been completely covered by new deposits. The growing cone around the north vent has begun to connect with the top of the surrounding cliff in some places.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ELava fountains reached up to approximately 1200 ft (365 m) during this episode. Volcanic gas emissions have greatly decreased since the end of fountaining. Lava flows from this episode on the floor of Halema\u02bbuma\u02bbu within the southern part of Kaluapele (K\u012blauea caldera) may continue to exhibit slow movement or incandescence as they cool and solidify over the coming days. Slumping of molten cone material around the vent may also continue for the next 24 hours and can produce small, localized lava flows.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe U\u0113kahuna tiltmeter (UWD) recorded about 15 microradians of deflationary tilt during this episode. The end of the eruption was coincident with a rapid change from deflation to inflation at the summit and a decrease in seismic tremor intensity.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since the eruption started on December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/@usgs\/streams\u0022\u003Ehttps:\/\/www.youtube.com\/@usgs\/streams\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. HVO continues to closely monitor K\u012blauea and will issue a VAN\/VONA at the start of the next eruptive episode. Daily updates will be published each morning as regularly scheduled.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESulfur dioxide emission rate is typically 1,200-1,500 tonnes\/day between eruptive episodes\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are the primary hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAdditional hazards include Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity. Volcanic fragments can fall on the ground within a few hundred yards (meters) of the eruptive vent(s), or downwind of the vent(s). Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA VAN\/VONA will be issued at the start of the next eruptive episode. Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea\u202fhazards discussion:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 28 of the ongoing Halema\u02bbuma\u02bbu eruption ended abruptly at 1:20 p.m. HST on July 9, 2025.","sentUtc":"2025-07-09","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-07-09T23:03:53+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-07-09T23:03:53+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-07-09T23:03:53+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250709\/1511Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H305\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 28 of the ongoing Halema\u02bbuma\u02bbu eruption began at 4:10 a.m. HST on July 9 and is currently exhibiting a vent overflow and fountains reaching roughly 150 feet (45 meters). Past episodes have produced incandescent lava fountains over 1000 feet (300 meters) high that result in eruptive plumes up to 20,000 feet (6000 meters) above ground level. High fountaining associated with this episode has not yet begun but is expected to start soon, as tremor, deflation, and fountain height are all increasing. According to USGS weather stations just southwest of the summit, winds are blowing from the north-northeast direction at approximately 15 miles per hour, which suggests that volcanic gas emissions and volcanic material will be distributed south-southwest. Such trade winds typically turn more to the northeast during daylight hours.\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EAll eruptive activity is confined to Halema\u02bbuma\u02bbu crater within Hawai\u02bbi Volcanoes National Park\u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos that show eruptive lava fountains are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/@usgs\/streams\u0022\u003Ehttps:\/\/www.youtube.com\/@usgs\/streams\u003C\/a\u003E \u003C\/li\u003E\u003Cli\u003E\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/kpcam-kilauea-summit-mauna-loa-strip-road\u0022\u003EKPcam\u003C\/a\u003E and \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/kwcam-live-panorama-halemaumau-west-rim-kilauea-summit-caldera-looking-southeast\u0022\u003EKWcam\u003C\/a\u003E provide views of the plume height for avaition purposes\u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 28 was preceded by gas pistoning cycles, some of which produced small lava overflows at the north vent yesterday. Fountains from the north vent are currently 150 feet (45 meters) high and feeding multiple lava streams at 5 a.m. HST. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EInflationary tilt reached approximately 14 microradians since the end of the last episode. Seismic tremor began increasing and tilt at UWD switched from inflationary to slightly deflationary at about 4:15 a.m. HST, a few minutes after lava flows began erupting onto the crater floor. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. A VAN\/VONA will be issued when sustained lava fountaining ceases and the eruption is paused, or earlier if the situation warrants a further update.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EPlume in past episodes has reached up to 20,000 feet (6000 meters) above ground level driven by incandescent lava fountains over 1000 feet (300 meters) high\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EMost volcanic ash and pumice (tephra) will fall within about 1 mile (1-2 km) of the eruptive vents. Lower concentrations of finer volcanic particles, such as ash and Pele's Hair, can be transported greater distances downwind of the vent (20 miles or 30 km). \r\n\r\nSulfur dioxide emission rate is typically over 50,000 tonnes\/day during eruptive episode.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are one hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAnother hazard closer to the vent is fallout of Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity and can be carried over 10 miles (15 kilometers) from the vent. Other glassy volcanic fragments including Pele\u02bbs hair, volcanic ash, pumice, scoria, and retriculite can fall on the ground within 1-2 miles (1-3 kilometers) of the eruptive vent(s) with the highest concentrations downwind of the vent(s). Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other glassy volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA VAN\/VONA will be issued when sustained lava fountaining ceases and the eruption is paused, or earlier if the situation warrants a further update. Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 28 of the ongoing Halema\u02bbuma\u02bbu eruption began at 4:10 a.m. HST on July 9, 2025.","sentUtc":"2025-07-09","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-07-09T05:16:44+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-07-09T05:16:44+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-07-09T05:16:44+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250701\/1941Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EIliamna (VNUM #313020)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUNASSIGNED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/A406\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 60 deg 1 min W 153 deg 5 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ECook Inlet-South Central\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E10016 ft (3053 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003ERepairs to the seismic network were completed last week and there is now sufficient data available to monitor activity at Iliamna Volcano. The Aviation Color Code and Volcano Alert Level are being changed to GREEN\/NORMAL from UNASSIGNED\/UNASSIGNED. \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENA\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENA\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EIliamna Volcano is located on the western side of lower Cook Inlet in the Lake Clark National Park. Iliamna is a snow-covered stratovolcano which rises 10,020 feet above sea level. Although steam plumes occur on its eastern flanks, there has been no historic volcanic activity at Iliamna. Iliamna is located 225 km (140 miles) southwest of Anchorage and 113 km (70 miles) southwest of Homer.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003Cbr\u003EJessica Larsen, Acting Coordinating Scientist, UAF jflarsen@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN\/VONA will be issued if conditions change significantly or alert levels are modified.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Aviation Color Code and Volcano Alert Level changed to GREEN\/NORMAL from UNASSIGNED","sentUtc":"2025-07-01","obs":"avo","vName":"Iliamna","vnum":"313020","noticeId":"DOI-USGS-AVO-2025-07-01T19:23:31+00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2025-07-01T19:23:31+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2025-07-01T19:23:31+00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250630\/0620Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H302\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 29 of the ongoing Halema\u02bbuma\u02bbu eruption ended abruptly at 7:54 p.m. HST on June 29 after nearly 11 hours of continuous fountaining.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EWaning north vent fountains stopped completely at 7:54 p.m. HST, several hours after reaching maximum heights up to 1,100 ft (340 m). Flames were visible at the south vent for a few minutes afterwards. High fountains produced approximately 1.6 billion gallons (6.2 million cubic meters) of lava covering 80% of the crater floor.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESince fountaining ended, volcanic gas emissions have greatly decreased. Lava flows from this episode on the floor of Halema\u02bbuma\u02bbu within the southern part of Kaluapele (K\u012blauea caldera) may continue to exhibit slow movement or incandescence as they cool and solidify over the coming days. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe U\u0113kahuna tiltmeter (UWD) recorded approximately 16.4 microradians of deflationary tilt during this episode. The end of the episode was coincident with a rapid change from deflation to inflation at the summit and a decrease in seismic tremor intensity.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since the eruption started on December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/@usgs\/streams\u0022\u003Ehttps:\/\/www.youtube.com\/@usgs\/streams\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. HVO continues to closely monitor K\u012blauea and will issue a VAN\/VONA at the start of the next eruptive episode. If possible, HVO will also issue a VAN\/VONA beforehand at the onset of low-level precursory activity. Daily updates will be published each morning as regularly scheduled.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESulfur dioxide emission rates are typically 1,200-1,500 tonnes\/day between fountaining episodes\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are the primary hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAdditional hazards include Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity. Volcanic fragments can fall on the ground within a few hundred yards (meters) of the eruptive vent(s), or downwind of the vent(s). Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA VAN\/VONA will be issued at the start of the next eruptive episode. If possible, HVO will also issue a VAN\/VONA beforehand at the onset of low-level activity precursory activity. Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea\u202fhazards discussion:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 27 of the ongoing Halema\u02bbuma\u02bbu eruption ended abruptly at 7:54 p.m. HST on June 29. Earlier, lava fountains had reached heights of 1,100 ft (340 m).","sentUtc":"2025-06-30","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-06-30T00:11:56+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-06-30T00:11:56+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-06-30T00:11:56+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250629\/1931Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H301\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 27 of the ongoing Halema\u02bbuma\u02bbu eruption began at 9:05 a.m. HST on June 29, 2025, when ongoing lava fountains from the north vent became more vigorous. These fountains are now reaching heights of about 500 feet (150 meters) and feeding multiple lava streams that are flowing onto the crater floor. Fountain heights can be expected to increase further in the next hour or so.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAccording to the National Weather Service, winds are blowing from the northeast to east direction, though field observations indicate that actual wind conditions are more variable. Consequently, at this time it is uncertain what direction volcanic gas emissions and tephra from the lava fountain may be distributed around Halema\u02bbuma\u02bbu. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 27 was preceded by small, sporadic dome fountains in the north vent that began at approximately 7:27 a.m. HST. These fountains continued to increase in vigor over the next hour and a half, before becoming taller at 9:05 a.m. HST. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EInflationary tilt reached just over 16.5 microradians since the end of episode 26, after recording 18.5 microradians of deflationary tilt during that episode. Seismic tremor began increasing and tilt at station UWD switched from inflationary to deflationary at about 7:30 a.m. HST, around the same time lava flows began erupting onto the crater floor. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/@usgs\/streams\u0022\u003Ehttps:\/\/www.youtube.com\/@usgs\/streams\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. A VAN\/VONA will be issued when sustained lava fountaining ceases and the eruption is paused, or earlier if the situation warrants a further update.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EApprox 11,500 ft (3,500 meters)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESulfur dioxide emission rate is typically 50,000 tonnes\/day during sustained lava fountaining episode\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are the primary hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAdditional hazards include Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity. Volcanic fragments can fall on the ground within a few hundred yards (meters) of the eruptive vent(s), or downwind of the vent(s). Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA VAN\/VONA will be issued when sustained lava fountaining ceases and the eruption is paused, or earlier if the situation warrants a further update. Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea\u202fhazards discussion:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 27 of the ongoing Halema\u02bbuma\u02bbu eruption began at 9:05 a.m. HST on June 29. Lava fountains are reaching heights of 500 feet (150 meters) at this time.","sentUtc":"2025-06-29","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-06-28T05:05:54+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-06-28T05:05:54+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-06-28T05:05:54+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250628\/1850Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H299\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EPrecursory low-level activity for episode 27 of the ongoing Halema\u02bbuma\u02bbu eruption began around 7:27 a.m. HST on June 28, currently consisting of intermittent lava overflows from the north vent. Sustained lava fountaining is likely to begin on June 29 or 30 (tomorrow or Monday) based on the current rate of summmit inflation, but could begin sooner if precursory activity escalates. According to the National Weather Service, winds are forecast to blow from the north-northeast to east directions within that timeframe. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EIn recent episodes of the ongoing eruption within Halema\u02bbuma\u02bbu, low-level precursory activity has lasted from a few hours to a few days. This activity can include spatter from the north and\/or south vents, small dome fountains, and lava overflowing from one or both vents. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAt the start of previous episodes, precursory activity has rapidly escalated into sustained high fountaining over minutes to tens of minutes. During previous episodes, fountains reached heights of more than 1,000 feet (305 meters) and the eruptive plume reached heights of up to 20,000 feet (6,000 meters) above ground level soon after sustained fountaining began.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe tiltmeter at U\u0113kahuna (UWD) has recorded 15.5 microradians of inflationary tilt since the end of the last episode, during which it recorded 18.5 microradians of deflationary tilt. Low level seismic tremor continues beneath Halema\u02bbuma\u02bbu crater. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/@usgs\/streams\u0022\u003Ehttps:\/\/www.youtube.com\/@usgs\/streams\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. A VAN\/VONA will be issued when sustained lava fountaining begins, marking the start of episode 27, or earlier if the situation warrants a further update.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESulfur dioxide emission rates are typically 1,200-1,500 tonnes\/day between eruptive episodes and 50,000 tonnes\/day during an eruptive episode\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are the primary hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAdditional hazards include Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity. Volcanic fragments can fall on the ground within a few hundred yards (meters) of the eruptive vent(s), or downwind of the vent(s). Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs_v2.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA VAN\/VONA will be issued when sustained lava fountaining begins, marking the start of episode 27, or earlier if the situation warrants a further update. Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea\u202fhazards discussion:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Precursory low-level activity for episode 27 of the ongoing Halema\u02bbuma\u02bbu eruption began around 7:27 a.m. HST on June 28.","sentUtc":"2025-06-28","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-06-27T04:06:53+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-06-27T04:06:53+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-06-27T04:06:53+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250620\/2058Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H291\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 26 of the ongoing Halema\u02bbuma\u02bbu eruption ended abruptly at 10:25 a.m. HST on Friday, June 20, when lava fountains and flows stopped erupting from the south vent. The episode consisted of about 8 hours of continuous lava fountaining.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe north vent stopped erupting at approximately 10:07 a.m. HST. The south vent stopped erupting at approximately 10:25 a.m. HST, marking the end of the episode. Lava fountains reached heights of well over 1,000 ft (300 m) during this episode. Volcanic gas emissions have greatly decreased. Lava flows from this episode on the floor of Halema\u02bbuma\u02bbu within the southern part of Kaluapele (K\u012blauea caldera) will continue to exhibit slow movement and incandescence as they cool and solidify over the coming days. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe U\u0113kahuna tiltmeter (UWD) recorded more than 18 microradians of deflationary tilt during this episode. The end of the eruption was coincident with a rapid change from deflation to inflation at the summit and a decrease in seismic tremor intensity.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since the eruption started on December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/@usgs\/streams\u0022\u003Ehttps:\/\/www.youtube.com\/@usgs\/streams\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. HVO continues to closely monitor K\u012blauea and will issue a VAN\/VONA at the start of the next eruptive episode. If possible, HVO will also issue a VAN\/VONA beforehand at the onset of low-level activity precursory activity. Daily updates will be published each morning as regularly scheduled.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESulfur dioxide emission rate is typically 1,200-1,500 tonnes\/day between eruptive episodes\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are the primary hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAdditional hazards include Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity. Volcanic fragments can fall on the ground within a few hundred yards (meters) of the eruptive vent(s), or downwind of the vent(s). Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA VAN\/VONA will be issued at the start of the next eruptive episode. If possible, HVO will also issue a VAN\/VONA beforehand at the onset of low-level activity precursory activity. Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea\u202fhazards discussion:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 26 of the ongoing Halema\u02bbuma\u02bbu eruption ended abruptly at 10:25 a.m. HST on Friday, June 20.","sentUtc":"2025-06-20","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-06-20T20:17:52+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-06-20T20:17:52+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-06-20T20:17:52+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250620\/1210Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H290\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 26 of the ongoing Halema\u02bbuma\u02bbu eruption began at approximately 1:40 a.m. HST on June 20, 2025, with lava fountains and flows erupting from the north vent. Lava fountains are currently reaching heights of over 1,000 feet (300 meters). \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAccording to the National Weather Service, winds are blowing from the north direction, which suggests that volcanic gas emissions and tephra from the lava fountain may be distributed south of Halema'uma'u caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 26 was preceded by small, sporadic spattering and lava overflows from the north vent that began at approximately 11:26 p.m. and continued to increase in intensity until 1:40 a.m., when sustained fountaining began. Fountains from north vent are 800 feet (250 meters) high and feeding a lava flow at 1:55 a.m. HST. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EInflationary tilt reached just over 15.3 microradians since the end of the last episode. Seismic tremor began increasing and tilt at UWD switched from inflationary to deflationary at about 1:40 a.m. HST, about the same time lava fountaining increased in intensity. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/@usgs\/streams\u0022\u003Ehttps:\/\/www.youtube.com\/@usgs\/streams\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. A VAN\/VONA will be issued when sustained lava fountaining ceases and the eruption is paused, or earlier if the situation warrants a further update.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EApprox 14,800 ft (4,500 meters)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESulfur dioxide emission rate is typically 50,000 tonnes\/day during eruptive episode\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are the primary hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAdditional hazards include Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity. Volcanic fragments can fall on the ground within a few hundred yards (meters) of the eruptive vent(s), or downwind of the vent(s). Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA VAN\/VONA will be issued when sustained lava fountaining ceases and the eruption is paused, or earlier if the situation warrants a further update. Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea\u202fhazards discussion:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 26 of the ongoing Halema\u02bbuma\u02bbu eruption began at approximately 1:40 a.m. HST on June 20, 2025.","sentUtc":"2025-06-20","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-06-20T09:46:23+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-06-20T09:46:23+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-06-20T09:46:23+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250620\/0954Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H286\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003ELow-level precursory activity started within Halema\u02bbuma\u02bbu at 11:26 p.m. HST on 6\/19\/2025 when lava began overflowing from the north vent. Episode 26 is likely to begin within the next 24 hours. According to the National Weather Service, winds are forecasted to blow from the north-northeast direction within the next 48 hours. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EIn recent episodes of the ongoing eruption within Halema\u02bbuma\u02bbu, precursory low-level activity has lasted from a few hours to a few days. This activity can include spatter from north and\/or south vents, small dome fountains, and lava overflowing from one or both vents. At the start of previous episodes, precursory activity has rapidly escalated into sustained high fountaining over minutes to tens of minutes.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe tiltmeter at U\u0113kahuna (UWD) has recorded 15 microradians of inflationary tilt since the end of the last episode. Low level seismic tremor continues beneath Halema\u02bbuma\u02bbu crater. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/@usgs\/streams\u0022\u003Ehttps:\/\/www.youtube.com\/@usgs\/streams\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. A VAN\/VONA will be issued when sustained lava fountaining begins, marking the start of episode 26, or earlier if the situation warrants a further update.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESulfur dioxide emission rates are typically 1,200-1,500 tonnes\/day between eruptive episodes and 50,000 tonnes\/day during an eruptive episode\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are the primary hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAdditional hazards include Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity. Volcanic fragments can fall on the ground within a few hundred yards (meters) of the eruptive vent(s), or downwind of the vent(s). Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA VAN\/VONA will be issued when sustained lava fountaining begins, marking the start of episode 26, or earlier if the situation warrants a further update. Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea\u202fhazards discussion:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Low-level precursory activity started within Halema\u02bbuma\u02bbu at 11:26 p.m. HST on 6\/19\/2025.","sentUtc":"2025-06-20","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-06-18T18:35:43+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-06-18T18:35:43+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-06-18T18:35:43+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250612\/0627Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H278\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 25 of the ongoing Halema\u02bbuma\u02bbu eruption ended at 8:08 p.m. HST on June 11, 2025, after about 8 hours of continuous fountaining.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EContinuous eruptive activity at the north vent started at 11:57 p.m. HST today and stopped at approximately 7:36 p.m. HST. The south vent started erupting at approximately 1:30 p.m. HST and stopped at approximately 8:08 p.m. HST. In total, the two vents erupted for just over 8 hours today, June 11. Lava fountains from the north vent reached over 1,000 ft (305 m) during this episode. Lava flows from this episode on the floor of Halema\u02bbuma\u02bbu within the southern part of Kaluapele (K\u012blauea caldera) may continue to exhibit slow movement or incandescence as they cool and solidify over the coming days. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe U\u0113kahuna tiltmeter (UWD) recorded about 14 microradians of deflationary tilt during this episode. The end of the episode was coincident with a gradual change from deflation to inflation at the summit and a decrease in seismic tremor intensity.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since the eruption started on December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/@usgs\/streams\u0022\u003Ehttps:\/\/www.youtube.com\/@usgs\/streams\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. HVO continues to closely monitor K\u012blauea and will issue a VAN\/VONA at the start of the next eruptive episode. If possible, HVO will also issue a VAN\/VONA beforehand at the onset of low-level activity precursory activity. The next regularly scheduled daily update will be posted tomorrow morning at the regular time.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESulfur dioxide emission rate is typically 1,200 and 1,500 tonnes\/day between eruptive episodes\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are the primary hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAdditional hazards include Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity. Volcanic fragments can fall on the ground within a few hundred yards (meters) of the eruptive vent(s), or downwind of the vent(s). Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA VAN\/VONA will be issued at the start of the next eruptive episode. If possible, HVO will also issue a VAN\/VONA beforehand at the onset of low-level activity precursory activity. Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea\u202fhazards discussion:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 25 of the ongoing Halema\u02bbuma\u02bbu eruption ended at 8:08 p.m. HST on June 11, 2025.","sentUtc":"2025-06-12","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-06-11T23:33:40+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-06-11T23:33:40+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-06-11T23:33:40+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250611\/2239Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H276\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 25 of the ongoing Halema\u02bbuma\u02bbu eruption began at 11:57 a.m. HST on June 11, 2025, and the volume and vigor of lava fountains and flows has increased markedly as of 12:30 p.m. Lava is currently fountaining from the north vent, reaching heights of approximately 330 feet (100 meters).\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 25 was preceded by intermittent gas-pistoning in the north vent, with associated small spatter fountains and lava flows which began before dawn on June 10. This activity, which occurred at a rate of about 5-10 gas piston events per hour, continued to increase in intensity until 11:57 a.m. on June 11, when a small sustained dome fountain began to feed lava flows onto the crater floor. As of 12:30 p.m. HST, fountains from the north vent are reaching about 165 feet (50 meters) high and feeding multiple lava streams. Fountains heights are likely to increase in the coming hours. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EInflationary tilt reached just over 15 microradians since the end of the last episode. Seismic tremor began increasing and tilt at UWD switched from inflation to deflation at about 12 p.m. HST, about the same time lava flows began erupting onto the crater floor. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/@usgs\/streams\u0022\u003Ehttps:\/\/www.youtube.com\/@usgs\/streams\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. A VAN\/VONA will be issued when sustained lava fountaining ceases and the eruption is paused, or earlier if the situation warrants a further update.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESulfur dioxide emission rate is typically 50,000 tons\/day during eruptive episode\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are the primary hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAdditional hazards include Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity. Volcanic fragments can fall on the ground within a few hundred yards (meters) of the eruptive vent(s), or downwind of the vent(s). Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA VAN\/VONA will be issued when sustained lava fountaining ceases and the eruption is paused, or earlier if the situation warrants a further update. Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea\u202fhazards discussion:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 25 of the ongoing Halema\u02bbuma\u02bbu eruption began at 11:57 a.m. HST on June 11, 2025.","sentUtc":"2025-06-11","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-06-10T21:50:01+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-06-10T21:50:01+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-06-10T21:50:01+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250610\/1756Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H273\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 25 precursory activity started within Halema\u02bbuma\u02bbu on the morning of June 10. Glow and scattered spattering at the north vent changed to more continuous spattering in the early morning hours. At about 5:54 AM HST, lava overflowed the north vent cone and is currently flowing onto the crater floor. Episode 25 is forecast to begin between tomorrow (Wednesday) and Thursday. However, there is a chance that activity could proceed to high fountaining today.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EIn recent episodes of the ongoing eruption within Halema\u02bbuma\u02bbu, low-level precursory activity has lasted from a few hours to a few days. This activity can include spatter from north and\/or south vents, small dome fountains, and lava overflowing from one or both vents. At the start of previous episodes, precursory activity has rapidly escalated into sustained high fountaining over minutes to tens of minutes.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe tiltmeter at U\u0113kahuna (UWD) has recorded 13 microradians of inflation since the end of the last episode. Low level seismic tremor continues beneath Halema\u02bbuma\u02bbu crater. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/@usgs\/streams\u0022\u003Ehttps:\/\/www.youtube.com\/@usgs\/streams\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. A VAN\/VONA will be issued when sustained lava fountaining begins, marking the start of episode 25, or earlier if the situation warrants a further update.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESulfur dioxide emission rates are typically 1,200-1,500 tons\/day between eruptive episodes and 50,000 tons\/day during an eruptive episode\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are the primary hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAdditional hazards include Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity. Volcanic fragments can fall on the ground within a few hundred yards (meters) of the eruptive vent(s), or downwind of the vent(s). Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA VAN\/VONA will be issued when sustained lava fountaining begins, marking the start of episode 25, or earlier if the situation warrants a further update. Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea\u202fhazards discussion:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 25 precursory activity started within Halema\u02bbuma\u02bbu on the morning of June 10.","sentUtc":"2025-06-10","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-06-10T17:17:48+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-06-10T17:17:48+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-06-10T17:17:48+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250605\/1537Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H259\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 24 of the ongoing Halema\u02bbuma\u02bbu eruption ended abruptly at 4:28 a.m. HST on June 5.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe north vent stopped erupting at approximately 4:08 a.m. HST. The south vent stopped erupting at approximately 4:28 a.m. HST, marking the end of the episode. Lava flows from this episode on the floor of Halema\u02bbuma\u02bbu within the southern part of Kaluapele (K\u012blauea caldera) may continue to exhibit slow movement or incandescence as the cool and solidify over the coming days. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe U\u0113kahuna tiltmeter (UWD) recorded appriximately 13 microradians of deflationary tilt during this episode. The end of the eruption was coincident with a rapid change from deflation to inflation at the summit and a decrease in seismic tremor intensity.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since the eruption started on December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/@usgs\/streams\u0022\u003Ehttps:\/\/www.youtube.com\/@usgs\/streams\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. HVO continues to closely monitor K\u012blauea and will issue a VAN\/VONA at the start of the next eruptive episode. If possible, HVO will also issue a VAN\/VONA beforehand at the onset of low-level activity precursory activity. The next regularly scheduled daily update will be posted at the regular time.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESulfur dioxide emission rate is typically 1,200 and 1,500 tons\/day between eruptive episodes\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are the primary hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAdditional hazards include Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity. Volcanic fragments can fall on the ground within a few hundred yards (meters) of the eruptive vent(s), or downwind of the vent(s). Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA VAN\/VONA will be issued at the start of the next eruptive episode. If possible, HVO will also issue a VAN\/VONA beforehand at the onset of low-level activity precursory activity. Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea\u202fhazards discussion:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 24 of the ongoing Halema\u02bbuma\u02bbu eruption ended abruptly at 4:28 a.m. HST on June 5.","sentUtc":"2025-06-05","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-06-05T15:22:03+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-06-05T15:22:03+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-06-05T15:22:03+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250605\/0851Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H258\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 24 of the ongoing Halema\u02bbuma\u02bbu eruption began at 8:55 PM HST on June 4 and is currently fountaining from the north vent.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 24 was preceded by sporadic spatter, gas pistoning, and hydrogen flames that began on the morning of June 3.  At approximately 8:55 PM HST, episode 24 began with low dome fountaining accompanied by lava flows onto the crater floor. Small sustained lava fountains, less than about 100 feet (30 meters) high, began erupting from the north vent around 9:15 PM. Activity increased again around 10:10 PM, when fountain heights increased to 325 feet (100 meters) and by 10:40 reached over 980 feet (300 meters). Additionally, the fountain generated a plume that reached 16,500 feet (5,000 meters) above ground level by 10:50 PM and is increasing. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAt a tiltmeter near U\u0113kahuna (UWD), inflationary tilt reached just over 14 microradians since the end of the last episode; slightly more than the amount of deflationary tilt in episode 23. Seismic tremor began increasing and tilt at UWD switched from inflation to deflation at about 9:00 PM HST, close in time to the beginning of low fountaining. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/@usgs\/streams\u0022\u003Ehttps:\/\/www.youtube.com\/@usgs\/streams\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. A VAN\/VONA will be issued when sustained lava fountaining ceases and the eruption is paused, or earlier if the situation warrants a further update.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E16,500 feet a.g.l. (5,000 meters) and growing\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESulfur dioxide emission rate is typically 50,000 tons\/day during eruptive episode\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are the primary hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAdditional hazards include Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity. Volcanic fragments can fall on the ground within a few hundred yards (meters) of the eruptive vent(s), or downwind of the vent(s). Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA VAN\/VONA will be issued when sustained lava fountaining ceases and the eruption is paused, or earlier if the situation warrants a further update. Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea\u202fhazards discussion:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 24 of the ongoing Halema\u02bbuma\u02bbu eruption began at 8:55 PM HST on June 4.","sentUtc":"2025-06-05","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-06-05T07:31:47+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-06-05T07:31:47+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-06-05T07:31:47+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250603\/2236Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/H256\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEpisode 24 precursory activity started within Halema\u02bbuma\u02bbu during the morning of June 3. Vigorous degassing of sulfur dioxide (SO\u003Ci\u003E2\u003C\/i\u003E), nighttime glow, and intermittent lava spattering in the north vent indicate that magma is close to the surface. Episode 24 is likely to begin today or tomorrow.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EIn recent episodes of the ongoing eruption within Halema\u02bbuma\u02bbu, low-level precursory activity has lasted from a few hours to a few days. This activity can include spatter from north and\/or south vents, small dome fountains, and lava overflowing from one or both vents. At the start of previous episodes, precursory activity has rapidly escalated into sustained high fountaining over minutes to tens of minutes.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe tiltmeter at U\u0113kahuna (UWD) has recorded just over 12 microradians of inflationary tilt since the end of the last episode. Low level seismic tremor continues beneath Halema\u02bbuma\u02bbu crater. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost episodes of Halema\u02bbuma\u02bbu lava fountaining since December 23, 2024, have continued for around a day or less and have been separated by pauses in eruptive activity lasting generally at least several days. \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003ETimeline of eruptive episodes since December 23, 2024: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/science\/eruption-information\u003C\/a\u003E \u003C\/li\u003E\u003Cli\u003EThree K\u012blauea summit livestream videos are available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/@usgs\/streams\u0022\u003Ehttps:\/\/www.youtube.com\/@usgs\/streams\u003C\/a\u003E \u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo changes have been detected in the East Rift Zone or Southwest Rift Zone. A VAN\/VONA will be issued when sustained lava fountaining begins, marking the start of episode 24, or earlier if the situation warrants a further update.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea Volcano Alert Level\/Aviation Color Code remain at WATCH\/ORANGE. All current and recent activity is within Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESulfur dioxide emission rates are typically 1,200-1,500 tonnes\/day between eruptive episodes and 50,000 tonnes\/day during an eruptive episode\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis episodic eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are the primary hazard of concern, as this hazard can have far-reaching\u202feffects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E\u202fis continuously released from the summit during an eruption, it will react in the atmosphere to create the visible haze known as vog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fSO\u003Csub\u003E2\u003C\/sub\u003E and vog may cause respiratory and other problems at high concentrations. Further information on vog can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAdditional hazards include Pele's hair and other volcanic fragments from lava fountains. Pele's hair is strands of volcanic glass often produced by lava fountaining activity. Volcanic fragments can fall on the ground within a few hundred yards (meters) of the eruptive vent(s), or downwind of the vent(s). Strong winds may waft light particles, including Pele's hair, to greater distances downwind. Once they are on the ground, Pele's hair can sometimes cluster and tangle together, giving it the appearance of a tumbleweed. The extent of Pele's hair deposition is dependent on lava fountaining activity and current wind conditions. Residents and visitors should minimize exposure to Pele's hair and other volcanic fragments, which can cause skin and eye irritation. More information about how Pele's hair, its hazards, and what to do is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-recent-lava-fountains-highlight-peles-hair-hazards\u003C\/a\u003E. A recently updated Frequently Asked Questions document that includes information about potential health effects of Pele's hair is available here: \u003Ca href=\u0022https:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs.pdf\u0022\u003Ehttps:\/\/vog.ivhhn.org\/sites\/default\/files\/PelesHair_FAQs.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope, and during this eruption flows have been confined to Halema\u02bbuma\u02bbu crater and the southwest side of Kaluapele, K\u012blauea's summit caldera. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea's\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA VAN\/VONA will be issued when sustained lava fountaining begins, marking the start of episode 24, or earlier if the situation warrants a further update. Regularly scheduled daily updates for K\u012blauea are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea\u202fhazards discussion:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Episode 24 precursory activity started within Halema\u02bbuma\u02bbu during the morning on June 3","sentUtc":"2025-06-03","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2025-06-03T22:03:07+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2025-06-03T22:03:07+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2025-06-03T22:03:07+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250505\/2000Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAtka volcanic complex (VNUM #311160)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/A289\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 52 deg 19 min W 174 deg 8 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E5030 ft (1533 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            No further explosive activity has been detected at the Atka volcanic complex since the small explosive event at 10:34 AKDT on April 25 (18:34 UTC on April 25). Thus, the Aviation Color Code and Alert Level are being reduced to GREEN\/NORMAL.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nBrief explosive events at Korovin Volcano can occur without significant precursory unrest. Fallout of ash is unlikely to extend much beyond the upper flanks of the volcano.Possible ash clouds generated by such events are expected to be small and dissipate quickly.\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe Atka volcanic complex forms the northern part of Atka Island, located about 16 km north of the community of Atka and 1,761 km southwest of Anchorage. The Atka volcanic complex includes a possible older caldera and several younger vents, including Korovin Volcano, Mount Kliuchef, and Sarichef Volcano. Korovin Volcano, a 1553-m-high (5030 ft) stratovolcano, has been the site of most historical volcanic activity, and has a small, roiling crater lake that occasionally produces energetic steam emissions. Korovin has erupted several times in the past 200 years, including 1973, 1987, and 1998, and has likely had small ash emissions as recently as 2005. Typical recent Korovin eruptions produce minor amounts of ash and occasional but small lava flows. Reports of the height of the ash plume produced by the 1998 eruption ranged as high as 10,600 m (35,000 feet) above sea level. Mount Kliuchef is composed of a series of five vents aligned northeast\u2013southwest. The two main summit vents of Kliuchef appear relatively young and the easternmost was probably the source of an 1812 eruption that is sometimes attributed to Sarichef.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003Cbr \/\u003E\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAFGI peizbekov@alaska.edu (907) 378-5460\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"No further exposlive activity observed.","sentUtc":"2025-05-05","obs":"avo","vName":"Atka volcanic complex","vnum":"311160","noticeId":"DOI-USGS-AVO-2025-05-05T17:00:22+00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2025-05-05T17:00:22+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2025-05-05T17:00:22+00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250425\/2147Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAtka volcanic complex (VNUM #311160)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EGREEN\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/A262\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 52 deg 19 min W 174 deg 8 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E5030 ft (1533 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EA small, short-lived explosion was detected at the Atka volcanic complex this morning at 10:34 AKDT April 25 (18:34 UTC April 25) in local infrasound and seismic data. Processing of the local infrasound data indicates the explosion originated from the summit crater of Korovin, one of several volcanoes within the Atka volcanic complex. AVO is increasing the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHigh clouds blocked the area at the time of the explosion, preventing satellite observations. Similar past events at the Atka volcanic complex did not result in a noticeable ashfall or ash cloud or other impacts.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe Atka volcanic complex forms the northern part of Atka Island, located about 16 km north of the community of Atka and 1,761 km southwest of Anchorage. The Atka volcanic complex includes a possible older caldera and several younger vents, including Korovin Volcano, Mount Kliuchef, and Sarichef Volcano. Korovin Volcano, a 1553-m-high (5030 ft) stratovolcano, has been the site of most historical volcanic activity, and has a small, roiling crater lake that occasionally produces energetic steam emissions. Korovin has erupted several times in the past 200 years, including 1973, 1987, and 1998, and has likely had small ash emissions as recently as 2005. Typical recent Korovin eruptions produce minor amounts of ash and occasional but small lava flows. Reports of the height of the ash plume produced by the 1998 eruption ranged as high as 10,600 m (35,000 feet) above sea level. Mount Kliuchef is composed of a series of five vents aligned northeast\u2013southwest. The two main summit vents of Kliuchef appear relatively young and the easternmost was probably the source of an 1812 eruption that is sometimes attributed to Sarichef.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EJessica Larsen, Acting Coordinating Scientist, UAF jflarsen@alaska.edu (907) 378-5460\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EContact AVO: https:\/\/avo.alaska.edu\/contact\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Small explosion detected in geophysical data at 10:34 AKDT April 25.","sentUtc":"2025-04-25","obs":"avo","vName":"Atka volcanic complex","vnum":"311160","noticeId":"DOI-USGS-AVO-2025-04-25T20:56:24+00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2025-04-25T20:56:24+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2025-04-25T20:56:24+00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250303\/2352Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAtka volcanic complex (VNUM #311160)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/A142\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 52 deg 19 min W 174 deg 8 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E5030 ft (1533 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThere has been no further explosive activity detected at the Atka volcanic complex since the small explosive event at 4:26 UTC on February 21 (7:26 pm on 2\/20\/25 AKST). Since then, seismicity has remained low. Thus, the Aviation Color Code and Alert Level are being reduced to GREEN\/NORMAL. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFurther analysis of geophysical data confirms the source of the explosion as the summit lake region of Korovin Volcano. Satellite data from February 25, 2025 shows no evidence of hot material or ash at the surface. Our interpretation is that this was a gas-driven explosion, caused by overpressure of the subsurface cap beneath the lake. This type of singular explosion is common at Korovin Volcano. Minor amounts of ash were possibly erupted in the immediate vicinity of the summit crater but have not been confirmed. Additional explosions may occur in the near future, but are unlikely.\u202f \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ELocal seismic and infrasound sensors, and web cameras are used to monitor the Atka volcanic complex. The local sensor network is supplemented with regional infrasound and lightning networks, and satellite data. \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe Atka volcanic complex forms the northern part of Atka Island, located about 16 km north of the community of Atka and 1,761 km southwest of Anchorage. The Atka volcanic complex includes a possible older caldera and several younger vents, including Korovin Volcano, Mount Kliuchef, and Sarichef Volcano. Korovin Volcano, a 1553-m-high (5030 ft) stratovolcano, has been the site of most historical volcanic activity, and has a small, roiling crater lake that occasionally produces energetic steam emissions. Korovin has erupted several times in the past 200 years, including 1973, 1987, and 1998, and has likely had small ash emissions as recently as 2005. Typical recent Korovin eruptions produce minor amounts of ash and occasional but small lava flows. Reports of the height of the ash plume produced by the 1998 eruption ranged as high as 10,600 m (35,000 feet) above sea level. Mount Kliuchef is composed of a series of five vents aligned northeast\u2013southwest. The two main summit vents of Kliuchef appear relatively young and the easternmost was probably the source of an 1812 eruption that is sometimes attributed to Sarichef.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022javascript:hansJs.addContactToNotice(639)\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022javascript:hansJs.addContactToNotice(632)\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"No further activity observed. Aviation Color Code and Alert Level has been changed to GREEN\/NORMAL","sentUtc":"2025-03-03","obs":"avo","vName":"Atka volcanic complex","vnum":"311160","noticeId":"DOI-USGS-AVO-2025-03-03T22:02:37+00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2025-03-03T22:02:37+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2025-03-03T22:02:37+00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250221\/2014Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAtka volcanic complex (VNUM #311160)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/A110\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 52 deg 19 min W 174 deg 8 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E5030 ft (1533 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThere has been no further activity detected at the Aka volcanic complex since the small explosive event from 4:26 UTC on February 21 (7:26 pm on 2\/20\/25 AKST), and seismicity remains low. Thus, the Aviation Color Code and Alert Level are being reduced to YELLOW\/ADVISORY. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFurther analysis of geophysical data confirms the source of the explosion as the summit lake region of Korovin Volcano and satellite data from last evening show no evidence of hot material at the surface. Our interpretation is that this was a steam-driven explosion, caused by overpressure of the subsurface cap beneath the lake. This type of singular explosion is common at Korovin Volcano. Minor amounts of ash were likely erupted in the immediate vicinity of the vent but have not been confirmed. Additional explosions are possible in the near future, but unlikely.\u202f \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ELocal seismic and infrasound sensors, and web cameras are used to monitor the Atka volcanic complex. The local sensor network is supplemented with regional infrasound and lightning networks, and satellite data. \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe Atka volcanic complex forms the northern part of Atka Island, located about 16 km north of the community of Atka and 1,761 km southwest of Anchorage. The Atka volcanic complex includes a possible older caldera and several younger vents, including Korovin Volcano, Mount Kliuchef, and Sarichef Volcano. Korovin Volcano, a 1553-m-high (5030 ft) stratovolcano, has been the site of most historical volcanic activity, and has a small, roiling crater lake that occasionally produces energetic steam emissions. Korovin has erupted several times in the past 200 years, including 1973, 1987, and 1998, and has likely had small ash emissions as recently as 2005. Typical recent Korovin eruptions produce minor amounts of ash and occasional but small lava flows. Reports of the height of the ash plume produced by the 1998 eruption ranged as high as 10,600 m (35,000 feet) above sea level. Mount Kliuchef is composed of a series of five vents aligned northeast\u2013southwest. The two main summit vents of Kliuchef appear relatively young and the easternmost was probably the source of an 1812 eruption that is sometimes attributed to Sarichef.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022javascript:hansJs.addContactToNotice(639)\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022javascript:hansJs.addContactToNotice(712)\u0022\u003ERonni Grapenthin, Acting Coordinating Scientist, UAFGI, rgrapenthin@alaska.edu (907) 378-5460\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"No further activity observed. Aviation Color Code and Alert Level has been changed to YELLOW\/ADVISORY","sentUtc":"2025-02-21","obs":"avo","vName":"Atka volcanic complex","vnum":"311160","noticeId":"DOI-USGS-AVO-2025-02-21T19:36:30+00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2025-02-21T19:36:30+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2025-02-21T19:36:30+00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250221\/0611Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAtka volcanic complex (VNUM #311160)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EGREEN\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/A652\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 52 deg 19 min W 174 deg 8 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E5030 ft (1533 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EA single, small explosive event was detected in local seismic and infrasound data at 4:26 UTC (7:26 pm AKST) at the Atka volcanic complex. As a result, the Aviation Color Code and Alert Level has been changed to ORANGE\/WATCH. The explosive event was short in duration (less than 10 seconds), and it is likely that a small amount of volcanic ash was erupted during this event. A meteorological cloud deck at an altitude of 8,000 to 10,000 ft above sea level obscured direct satellite observations, but no ash emissions were observed above the clouds. There have been no further explosive events observed and no noticeable change in seismic activity.   \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ELocal seismic and infrasound sensors and web cameras are used to monitor the Atka volcanic complex along with regional infrasound and lightning networks, and satellite data.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ELess than 10,000 ft \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENo ash seen in satellite data above met cloud deck\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe Atka volcanic complex forms the northern part of Atka Island, located about 16 km north of the community of Atka and 1,761 km southwest of Anchorage. The Atka volcanic complex includes a possible older caldera and several younger vents, including Korovin Volcano, Mount Kliuchef, and Sarichef Volcano. Korovin Volcano, a 1553-m-high (5030 ft) stratovolcano, has been the site of most historical volcanic activity, and has a small, roiling crater lake that occasionally produces energetic steam emissions. Korovin has erupted several times in the past 200 years, including 1973, 1987, and 1998, and has likely had small ash emissions as recently as 2005. Typical recent Korovin eruptions produce minor amounts of ash and occasional but small lava flows. Reports of the height of the ash plume produced by the 1998 eruption ranged as high as 10,600 m (35,000 feet) above sea level. Mount Kliuchef is composed of a series of five vents aligned northeast\u2013southwest. The two main summit vents of Kliuchef appear relatively young and the easternmost was probably the source of an 1812 eruption that is sometimes attributed to Sarichef.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022javascript:hansJs.addContactToNotice(639)\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022javascript:hansJs.addContactToNotice(712)\u0022\u003ERonni Grapenthin, Acting Coordinating Scientist, UAFGI, rgrapenthin@alaska.edu (907) 378-5460\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Small explosive event detected by local seismic and infrasound data. Aviation Color Code and Alert Level has been changed to ORANGE\/WATCH.","sentUtc":"2025-02-21","obs":"avo","vName":"Atka volcanic complex","vnum":"311160","noticeId":"DOI-USGS-AVO-2024-09-25T23:16:58+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2024-09-25T23:16:58+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2024-09-25T23:16:58+00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20250129\/0201Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EOkmok (VNUM #311290)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EGREEN\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2025\/A57\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 53 deg 23 min W 168 deg 9 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E3520 ft (1073 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe Alaska Volcano Observatory (AVO) equipment that transmits real-time seismic data from stations in the Okmok volcano monitoring network has experienced significant degradation over the past several days. A few channels are still being transmitted but are not sufficient to establish that the volcano is at a typical background level. AVO estimates that the outage will likely last several weeks or longer. As a result, AVO is unable to (1) assess whether this volcano may be building towards an eruption and (2) quickly confirm or dismiss reports of activity.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBecause this volcano is no longer monitored at adequate levels, the Aviation Color Code and Volcano Alert Level are changed to UNASSIGNED\/UNASSIGNED.  As at other volcanoes without real-time seismic networks, AVO will continue to use satellite data, regional seismic, infrasound and lightning networks, and reports from pilots and ground observers to detect signs of eruptive activity.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOkmok volcano is a 6-mile-wide caldera that occupies most of the eastern end of Umnak Island, located 75 miles southwest of Unalaska\/Dutch Harbor in the eastern Aleutian Islands. Okmok has had several eruptions in historic time typically consisting of ash emissions occasionally to over 30,000 feet ASL but generally much lower; lava flows crossed the caldera floor in 1945 and 1958. Prior to 2008, the volcano last erupted in February 1997 producing lava flows and intermittent ash emissions over the course of several months. The nearest settlement is Nikolski, population about 35, roughly 45 miles west of the volcano.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003Cbr\u003E\u003Cbr\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Major network outage due to power system degradation.  ","sentUtc":"2025-01-29","obs":"avo","vName":"Okmok","vnum":"311290","noticeId":"DOI-USGS-AVO-2025-01-29T01:24:15+00:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2025-01-29T01:24:15+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2025-01-29T01:24:15+00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20241223\/1643Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ERED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/H438\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea volcano is erupting within Halema\u02bbuma\u02bbu crater in the summit caldera. As of 6:30 a.m. HST, the eruption has stabilized within the crater and there are no immediate threats to infrastructure. The USGS Hawaiian Volcano Observatory is lowering K\u012blauea\u2019s\u202fvolcano alert level from WARNING to WATCH and its aviation color code from RED to ORANGE.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe ongoing eruption of K\u012blauea is occurring within a closed area of Hawai'i Volcanoes National Park. The eruption began at approximately 2:20 a.m., and vents are continuing to erupt on the floor of the southwest part of the summit caldera. The primary hazard of concern at this time is high levels of volcanic gas which can have far-reaching effects down-wind (generally southwest) of the summit. The plume of volcanic gas and fine volcanic particles is reaching elevations of 6,000-8,000 feet above sea level (2,000-4,000 feet above ground level) and winds are transporting it to the southwest, within the closed area of Hawai\u02bbi Volcanoes National Park. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAt 4:30 a.m., lava fountains were observed with heights up to 80 meters (262 feet). Molten material, including lava bombs, is being ejected from the vents on the caldera floor up onto the west caldera rim, within the closed area of Hawai\u02bbi Volcanoes National Park. The volcanic gas and ejecta hazards west of the erupting vents stress the hazardous nature of this closed area of K\u012blauea's summit. By 5:30 a.m., lava covered an estimated area of 400 acres of the caldera floor.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EEruptive activity is currently confined to the summit region. No significant changes have been observed in the rift zones.    \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA livestream of K\u012blauea summit available here: \u003Ca href=\u0022https:\/\/www.youtube.com\/usgs\/live\u0022\u003Ehttps:\/\/www.youtube.com\/usgs\/live\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther K\u012blauea webcams are available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO is in close contact with Hawai\u2018i Volcanoes National Park and the Hawai\u2018i County Civil Defense Agency. Please\u202fsee the\u202fHawai\u02bbi\u202fVolcanoes National Park website for visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E.\u202f\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO will continue to closely monitor K\u012blauea and adjust the alert level\/aviation color code accordingly. Should volcanic activity change significantly, a new Volcanic Activity Notice will be issued. Hazards are present on K\u012blauea and are described below. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor more information about the meaning of volcano alert levels and aviation color codes, see \u003Ca href=\u0022https:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u0022\u003Ehttps:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u003C\/a\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E6,000-8,000 feet above sea level\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are the primary hazard of concern, as this hazard can have far-reaching\u202feffects down-wind. As SO\u003Csub\u003E2\u003C\/sub\u003E is continuously released from the summit during the eruption, it will react in the atmosphere to create the visible haze known as\u202fvog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fVog\u202finformation can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E.\u202f\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope and are currently confined to Halema\u02bbuma\u02bbu and the eastern part of K\u012blauea caldera. Additional hazards include Pele's hair and other volcanic fragments from the lava fountains that will fall downwind of the fissure vents and land on the ground within a few hundred meters (yards) of the vent\u202f(s), or on the rim of the caldera west of the erupting vents. Strong winds may waft lighter particles to greater distances downwind. Residents and visitors should minimize exposure to these volcanic particles, which can cause skin and eye irritation.\u202f\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u202f\u003Cbr\u003E\u003Cbr\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea updates will be issued daily. Regularly scheduled updates are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea\u202fhazards discussion:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"K\u012blauea is erupting in the summit caldera within Hawai'i Volcanoes National Park; status reduced from WARNING\/RED to WATCH\/ORANGE.","sentUtc":"2024-12-23","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2024-12-23T15:31:51+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2024-12-23T15:31:51+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2024-12-23T15:31:51+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20241223\/1241Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/H437\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea\u202fvolcano is erupting. Elevated earthquake activity beneath the summit began at approximately 2 a.m. HST this morning, December 23. By 2:30 a.m., the USGS Hawaiian Volcano Observatory observed eruptive activity in\u202fK\u012blauea\u202fsummit webcam images, indicating that an eruption has commenced within Halema\u02bbuma\u02bbu and the summit caldera in Hawai\u2018i Volcanoes National Park. \u003Cbr\u003E\u003Cbr\u003EThe USGS Hawaiian Volcano Observatory is elevating\u202fK\u012blauea\u2019s\u202fvolcano alert level from ADVISORY to WARNING and its aviation color code from YELLOW to RED as this eruption and associated hazards are evaluated.\u202f\u202f\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe opening phases of eruptions are dynamic. Webcam imagery shows a line of fissures erupting lav fountains feeding lava flows at the base of Halema\u02bbuma\u02bbu within Kaluapele (the summit caldera). The activity is confined to the summit caldera and the hazards will be reassessed as the eruption progresses.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO will continue to monitor this activity closely and report any significant changes in future notices.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO is in close contact with Hawai\u2018i Volcanoes National Park and the Hawai\u2018i County Civil Defense Agency. Please\u202fsee the\u202fHawai\u02bbi\u202fVolcanoes National Park website for visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E.\u202f\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO will continue to closely monitor K\u012blauea and adjust the alert level\/aviation color code accordingly. Should volcanic activity change significantly, a new Volcanic Activity Notice will be issued. Hazards are present on K\u012blauea and are described below. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor more information about the meaning of volcano alert levels and aviation color codes, see \u003Ca href=\u0022https:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u0022\u003Ehttps:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u003C\/a\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe eruption is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are the primary hazard of concern, as this hazard can have far-reaching\u202feffects down-wind. As SO\u003Csub\u003E2\u003C\/sub\u003E is continuously released from the summit during the eruption, it will react in the atmosphere to create the visible haze known as\u202fvog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fVog\u202finformation can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E.\u202f\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawaiian lava flows generally advance slowly downslope and are currently confined to Halema\u02bbuma\u02bbu and the eastern part of K\u012blauea caldera. Additional hazards include Pele's hair and other lightweight volcanic glass fragments from the lava fountains that will fall downwind of the fissure vents and dust the ground within a few hundred meters (yards) of the vent\u202f(s). Strong winds may waft lighter particles to greater distances. Residents and visitors should minimize exposure to these volcanic particles, which can cause skin and eye irritation.\u202f\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u202f\u003Cbr\u003E\u003Cbr\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea updates will be issued daily. Regularly scheduled updates are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea\u202fhazards discussion:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"K\u012blauea is erupting within the summit caldera, status is being raised from ADVISORY\/YELLOW to RED\/WARNING.","sentUtc":"2024-12-23","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2024-12-23T12:33:19+00:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2024-12-23T12:33:19+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2024-12-23T12:33:19+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20241119\/2343Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAhyi Seamount (VNUM #284141)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUNASSIGNED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EU.S. Geological Survey\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/N72\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 20 deg 25 min E 145 deg 1 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENorthern Mariana Islands\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E-259 ft (-79 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EDefinitive signs of unrest at Ahyi Seamount have been observed sporadically in satellite data over the past few weeks. Plumes of discolored water were observed drifting up to several hundred yards (meters) away from the volcano in satellite images on November 1, 10, and 19. A retrospective analysis of older satellite data shows weak activity extending back to August 5, 2024. Some of these satellite images, including the most recent one, show what might be pumice floating on the ocean surface. Nothing significant has been detected from the direction of Ahyi Seamount in hydroacoustic array data at Wake Island, although submarine plumes have been observed at the volcano in the past without clear hydroacoustic signals.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe possible presence of pumice, in addition to the plume of discolored water, suggests an ongoing submarine eruption at Ahyi Seamount. Thus, the Aviation Color Code and Volcano Alert Level are being raised to YELLOW and ADVISORY. We will continue to monitor satellite and distal hydroacoustic data for additional evidence for, or escalation of, volcanic activity.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENo volcanic cloud produced\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EWater discoloration and possible floating pumice above the seamount observed in satellite images.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAhyi seamount is a large conical submarine volcano that rises to within 450 ft (137 m) of the sea surface about 11 miles (18 km) southeast of Farallon de Pajaros (Uracas) Island in the northern Marianas, about 370 miles (600 km) north of the island of Saipan. In the past, discolored water has been observed over the submarine volcano. In 1979, the crew of a fishing boat felt shocks over the summit area and then observed upwelling of sulfur-bearing water. On April 24-25, 2001 an explosive submarine eruption was detected seismically from a seismic station on Rangiroa Atoll, Tuamotu Archipelago. The event was well constrained (+\/- 9 miles or 15 km) at a location near the southern base of Ahyi.\u003Cbr\u003E \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ECNMI Homeland Security and Emergency Management\u003Cbr\u003Ehttp:\/\/www.cnmihsem.gov.mp\/\u003Cbr\u003E\u003Cbr\u003EUSGS Northern Mariana Duty Scientist (907) 786-7497\u003Cbr\u003Ehttp:\/\/volcano.wr.usgs.gov\/cnmistatus.php\u003Cbr\u003E\u003Cbr\u003ESatellite information, Washington VAAC\u003Cbr\u003Ehttp:\/\/www.ssd.noaa.gov\/VAAC\/washington.html\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Plume of discolored water and possible floating pumice; Aviation Color Code and Volcano Alert Level raised to YELLOW and ADVISORY..","sentUtc":"2024-11-19","obs":"nmi","vName":"Ahyi Seamount","vnum":"284141","noticeId":"DOI-USGS-NMI-2024-11-19T23:36:32+00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2024-11-19T23:36:32+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2024-11-19T23:36:32+00:00","nvewsThreat":"Very Low Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20241016\/2007Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESpurr (VNUM #313040)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EGREEN\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/A675\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 61 deg 17 min W 152 deg 15 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ECook Inlet-South Central\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E11070 ft (3374 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EAVO has observed a gradual increase in volcanic unrest over a period of several months at Mount Spurr, located about 120 km (75 miles) west of Anchorage (https:\/\/avo.alaska.edu\/image\/view\/196123). GNSS receivers have detected sustained upward and outward ground deformation since March 2024. An increase in seismic activity has also been noted since April (https:\/\/avo.alaska.edu\/image\/view\/196122). Other indications of elevated activity include the development of a small lake in the summit crater in early summer of 2024.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe largest magnitude earthquake detected in this current period of unrest is a M2.3 earthquake on October 6th. This increase in activity was described in detail in an Information Statement (https:\/\/avo.alaska.edu\/news\/hans\/DOI-USGS-AVO-2024-10-09T19:43:26+00:00) that AVO released on October 9th. Analysis of seismic data indicates a subtle increase in the rate and size of earthquakes over the past few weeks. Because this is a notable departure from the normal background seismicity of the volcano, AVO is raising the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY. However, there are no indications that an eruption is imminent. Often this type of seismicity and ground deformation will decline without producing an eruption.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAVO continues to closely monitor activity at Mount Spurr for signals that would indicate that the volcano is moving closer to an eruption. Based on previous eruptions, changes from current activity in the earthquakes, ground deformation, summit lake, and fumaroles would be expected if magma began to move closer to the surface. Therefore, it is very likely that if an eruption were to occur it would be preceded by additional signals that would allow advance warning. \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMount Spurr volcano is an ice- and snow-covered stratovolcano located on the west side of Cook Inlet approximately 120 km (75 mi) west of Anchorage. The only known historical eruptions occurred in 1953 and 1992 from the Crater Peak flank vent located 3.5 km (2 mi) south of the summit of Mount Spurr. These eruptions were brief, explosive, and produced columns of ash that rose up to 20 km (65,000 ft) above sea level and deposited several mm of ash in south-central Alaska, including approximately 6 mm (1\/4 in) of ash on Anchorage in 1953. The last known eruption from the summit of Mount Spurr was more than 5,000 years ago. Primary hazards during future eruptions include far-traveled ash clouds, ash fall, pyroclastic flows, and lahars or mudflows that could inundate drainages all sides of the volcano, but primarily on the south and east flanks.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS \u003Ca href=\u0022mailto:mhaney@usgs.gov\u0022\u003Emhaney@usgs.gov\u003C\/a\u003E (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI \u003Ca href=\u0022mailto:dfee1@alaska.edu\u0022\u003Edfee1@alaska.edu\u003C\/a\u003E (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Volcanic unrest has gradually increased over past several months. Aviation Color Code and Volcano Alert Level raised to YELLOW\/ADVISORY.","sentUtc":"2024-10-16","obs":"avo","vName":"Spurr","vnum":"313040","noticeId":"DOI-USGS-AVO-2024-10-15T22:16:23+00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2024-10-15T22:16:23+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2024-10-15T22:16:23+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20241001\/1804Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EWrangell (VNUM #315020)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUNASSIGNED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/A659\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 62 deg  W 144 deg 1 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EWrangell Volcanic Field\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E14163 ft (4317 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EField crews from the Alaska Volcano Observatory (AVO) have completed work on seismic monitoring equipment at Mt. Wrangell, bringing enough local stations back online to locate small volcanic earthquakes and detect potential activity above background at the volcano. As a result, the Aviation Color Code and Volcano Alert Level for Mt. Wrangell are being changed from UNASSIGNED  to GREEN\/NORMAL.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMt. Wrangell is a 4317 m (14,163 ft) high, andesitic, shield volcano with an ice-filled summit caldera, located in the Wrangell-St. Elias National Park and Preserve. Mt. Wrangell has three small post-caldera craters, named North Crater, East Crater, and Mt. Zanetti. These craters are all geothermally active, and there are frequent historical reports of steam from Mt. Wrangell. There are also several questionable reports of historical eruptive activity. Mt. Wrangell is 330 km (206 mi) northeast of Anchorage.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022javascript:hansJs.addContactToNotice(639)\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022javascript:hansJs.addContactToNotice(633)\u0022\u003EDavid Fee Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr\u003Ehttp:\/\/www.avo.alaska.edu\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"The seismic network on Mount Wrangell volcano is now functioning.","sentUtc":"2024-10-01","obs":"avo","vName":"Wrangell","vnum":"315020","noticeId":"DOI-USGS-AVO-2024-09-30T20:22:08+00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2024-09-30T20:22:08+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2024-09-30T20:22:08+00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20240923\/1812Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/H341\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe middle East Rift Zone eruption of K\u012blauea that began on Sunday, September 15 has ended and is unlikely to restart. The USGS Hawaiian Volcano Observatory (HVO) is lowering the Volcano Alert Level for ground-based hazards from WATCH to ADVISORY and the Aviation Color Code from ORANGE to YELLOW.\u202f\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe eruption in and near N\u0101pau Crater had four eruptive phases between September 15 and September 20. The final eruptive activity from a small vent west of N\u0101pau Crater ended at about 10 AM HST on September 20. All observable and instrumental signs of potential for renewed eruptive activity have declined since that time. Seismicity in the area is extremely low and tremor, characteristic of magma within vents, is no longer being recorded by seismometers in the area. In addition, the ground deformation data that showed magma was moving from the summit to the middle East Rift Zone has slowed dramatically or stopped altogether. Volcanic gas emissions have decreased to near background levels. All of these factors indicate that this eruption has ended.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERecent eruptive activity took place in a remote area of K\u012blauea\u2019s middle East Rift Zone, within Hawai\u02bbi Volcanoes National Park. No changes have been detected in the lower East Rift Zone, or Southwest Rift Zone.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO is in close contact with Hawai\u2018i Volcanoes National Park and the Hawai\u2018i County Civil Defense Agency. Please\u202fsee the\u202fHawai\u02bbi\u202fVolcanoes National Park website for visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E.\u202f\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO will continue to closely monitor K\u012blauea and adjust the alert level\/aviation color code accordingly. Should volcanic activity change significantly, a new Volcanic Activity Notice will be issued. Hazards are present on K\u012blauea and are described below. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor more information about the meaning of volcano alert levels and aviation color codes, see \u003Ca href=\u0022https:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u0022\u003Ehttps:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u003C\/a\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERecent lava flows and vents can remain extremely hot for months after an eruption. Hot\u202fand glassy\u202f(sharp)\u202fsurfaces can cause serious burns, abrasions, and lacerations\u202fupon contact with unprotected or exposed skin. Lava near vents tends to be unstable and can easily collapse. Minor to severe ground fractures and subsidence features near the eruption site may continue to widen and offset and may have unstable overhanging edges. This uneven and rough terrain can lead to falls\u202fand other injuries. Gas levels, while greatly reduced from eruptive gas levels, can pose hazards to those close to vents. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around K\u012blauea caldera from Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fthe rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since early 2008.\u202f  \u003Cbr\u003E \u003Cbr\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E. \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea updates will be issued daily. Regularly scheduled updates are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea\u202fhazards discussion:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"K\u012blauea\u2019s\u202fmiddle East Rift Zone eruption has ended, status is being lowered from ORANGE\/WATCH to YELLOW\/ADVISORY.","sentUtc":"2024-09-23","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2024-09-23T17:24:04+00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2024-09-23T17:24:04+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2024-09-23T17:24:04+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20240916\/1023Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/H250\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe intrusion of magma that began yesterday, September 14, in K\u012blauea\u2019s\u202fmiddle East Rift Zone, continues, increasing the potential of an eruption in this region. Accordingly, the USGS Hawaiian Volcano Observatory (HVO) is raising the Volcano Alert Level for ground-based hazards from ADVISORY to WATCH and the Aviation Color Code from YELLOW to ORANGE.\u202f\u202f\u202f \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ECurrent activity is taking place in a remote area of K\u012blauea\u2019s middle East Rift Zone, within Hawai\u02bbi Volcanoes National Park. No changes have been detected in the lower East Rift Zone, or Southwest Rift Zone.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EIntense and localized earthquakes between Maunaulu and Makaopuhi Crater, accompanied by ground deformation patterns indicative of underground crack growth began at approximately 6 p.m. HST on September 14, 2024. While the intensity of earthquake activity has decreased, continued ground deformation changes show that magma is still moving beneath the ground from summit storage chambers to the area between Maunaulu and \u202fMakaopuhi Crater.\u202fAn InSAR image showing recent ground extension between Maunaulu and Makaopuhi Crater is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/media\/images\/september-15-2024-insar-image-kilauea-intrusion\u0022\u003Ehttps:\/\/www.usgs.gov\/media\/images\/september-15-2024-insar-image-kilauea-intrusion\u003C\/a\u003E. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EStarting around 9 p.m. and continuing until 10 p.m. HST this evening, infrasound instruments detected a strong signal typical of gas or steam venting and seismometers in the middle East Rift Zone are recording weak, sustained low frequency tremor. However, HVO\u2019s webcam network has not shown any evidence of eruptive activity and GOES satellite data do not show any thermal anomalies at this time.\u202fCurrently, strong rainfall in the area is complicating interpretation. In 2007, an intrusion in this area erupted a very small pad of lava approximately the size of half a football field, so it is possible a similarly small eruption could take place without detection in these conditions. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENumerous eruptions took place in this area during the 1960s\u20131970s, most of which lasted less than one day to about two weeks. Long-lived eruptions took place at Maunaulu (1969\u20131971 and 1972\u20131974) and Pu\u02bbu\u02bb\u014d\u02bb\u014d (1983\u20132018). The most recent eruption in this area took place over 35 years at and near the Pu\u02bbu\u02bb\u014d\u02bb\u014d vent.\u202fThe location of any future outbreak will determine what areas could be in the path of new lava flows.\u202fA map of past eruptive activity in the upper-to-middle East Rift Zone of K\u012blauea is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/maps\/kilauea-middle-east-rift-zone-reference-map\u0022\u003Ehttps:\/\/www.usgs.gov\/maps\/kilauea-middle-east-rift-zone-reference-map\u003C\/a\u003E.\u202f \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO is in close contact with Hawai\u2018i Volcanoes National Park and the Hawai\u2018i County Civil Defense Agency. Please\u202fsee the\u202fHawai\u02bbi\u202fVolcanoes National Park website for visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E.\u202f\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO will continue to monitor this activity closely and adjust the alert level\/aviation color code for K\u012blauea accordingly. Should volcanic activity change significantly, a new Volcanic Activity Notice will be issued. Hazards are present on K\u012blauea and are described below. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor more information about the meaning of volcano alert levels and aviation color codes, see \u003Ca href=\u0022https:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u0022\u003Ehttps:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u003C\/a\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShallow magma movement and eruptions can produce minor to severe ground fractures and subsidence features, which can affect the landscape. These ground cracks can continue to widen and offset as magma migration continues, may have unstable overhanging edges, and should be avoided.\u202f \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around K\u012blauea caldera from Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fthe rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since early 2008.\u202f  \u003Cbr\u003E \u003Cbr\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E. \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea updates will be issued daily. Regularly scheduled updates are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea\u202fhazards discussion:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"K\u012blauea\u2019s\u202fmiddle East Rift Zone intrusion continues, increasing the potential for an eruption in this area; status is being raised to ORANGE\/WATCH.","sentUtc":"2024-09-16","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2024-07-23T20:17:44+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2024-07-23T20:17:44+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2024-07-23T20:17:44+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20240830\/1700Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/A621\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EOver the past several months, signs of volcanic unrest at Shishaldin Volcano have been declining. Slightly elevated seismicity, small infrasound signals and weak gas emissions continue to be detected but there is no indication of explosive activity or the presence of lava in the crater. This level of activity is expected to persist and continue to wane as the volcano settles after the eruption that began in July 2023 and continued until November 2023. The volcano appears to have returned to a background condition and poses no immediate threat of eruptive activity. Accordingly, AVO is lowering the Aviation Color Code to GREEN and the Volcano Alert Code to NORMAL. Resumption of volcanic activity would likely be preceded by increased seismicity, infrasound, elevated temperatures, and gas emissions .\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network. In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to monitor the volcano.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although activity during July\u2013November, 2023 generated ash columns that reached between 30,000 ft (9 km) and 42,000 ft (13 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAF dfee1@alaska.edu  (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Aviation Color Code and Volcano Alert Level decreased to GREEN\/NORMAL","sentUtc":"2024-08-30","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2024-08-28T21:56:56+00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2024-08-28T21:56:56+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2024-08-28T21:56:56+00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20240723\/1904Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/H248\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea is not erupting. Localized earthquake and ground deformation rates in K\u012blauea\u2019s\u202fupper East Rift Zone decreased significantly following the burst of intense activity at approximately 3:30 a.m. HST on July 23, 2024. Accordingly, the USGS Hawaiian Volcano Observatory (HVO) is lowering the Volcano Alert Level for ground-based hazards from WATCH to ADVISORY and the Aviation Color Code from ORANGE to YELLOW.    \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EEarthquake activity this morning was centered near Pauahi Crater in the upper East Rift Zone, along Chain of Craters Road in Hawai\u2018i Volcanoes National Park. More than 100 events occurred between 3:00\u20139:00 a.m. HST this morning, at depths of 1\u20133 km (0.6\u20131.8 miles) beneath the surface. Most events were smaller than magnitude-3, though there were 8 events larger. The largest event was a magnitude-3.4. Earthquake activity was accompanied by an abrupt change in ground deformation patterns in the upper East Rift Zone, shown by the ESC tiltmeter. Tiltmeters in K\u012blauea summit region (instruments SDH, southwest of the summit, and UWE, northwest of the summit) did not show significant changes associated with this activity.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe onset of this morning\u2019s upper East Rift Zone swarm was similar in intensity to that seen preceding K\u012blauea summit eruptions of the past few years. This coupled with the sharp displacement on the ESC tiltmeter and strong clustering of these earthquakes in the area beneath Pauahi Crater suggests that an intrusion of magma began at 3:30 this morning. The region around Pauahi Crater has a long history of intrusive and eruptive activity. The pulsing nature of this activity may represent stages in intrusive activity beneath this region in the past 24 hours. Additional seismic pulses or swarms may occur with little or no warning and result in either continued intrusion of magma or eruption of lava. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA map of past eruptive activity in the upper East Rift Zone of K\u012blauea is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-cruising-chain-craters-road-recent-earthquakes-and-past\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-cruising-chain-craters-road-recent-earthquakes-and-past\u003C\/a\u003E.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor K\u012blauea. Should volcanic activity change significantly, a new Volcanic Activity Notice will be issued.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO is in close contact with Hawai\u2018i Volcanoes National Park. Temporary closures have been implemented as a result of this elevated activity: \u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/learn\/news\/20240722-earthquakes.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/learn\/news\/20240722-earthquakes.htm\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHazards are present on K\u012blauea and are described below. Residents and visitors should stay informed and follow County of Hawai\u2018i and Hawai\u02bbi Volcanoes National Park guidelines.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor more information about the meaning of volcano alert levels and aviation color codes, see \u003Ca href=\u0022https:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u0022\u003Ehttps:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u003C\/a\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShallow magma movement and eruptions can produce minor to severe ground fractures and subsidence features, which can affect the landscape, human activity, and infrastructure. These ground cracks can continue to widen and offset as magma migration continues, may have unstable overhanging edges, and should be avoided.\u202f \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around K\u012blauea caldera from Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fthe rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since early 2008.\u202f  \u003Cbr\u003E \u003Cbr\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E. \u003Cbr\u003E \u003Cbr\u003EThe Hawaiian Volcano Observatory (HVO) continues to closely monitor K\u012blauea Volcano. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPlease\u202fsee the\u202fHawai\u02bbi\u202fVolcanoes National Park website for visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E.\u202f\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea updates will be issued daily. Should volcanic activity change significantly, a new VAN will be issued. Regularly scheduled updates are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea\u202fhazards discussion:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"K\u012blauea upper East Rift Zone unrest has decreased in intensity; status is being lowered to YELLOW\/ADVISORY.","sentUtc":"2024-07-23","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2024-07-23T14:44:02+00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2024-07-23T14:44:02+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2024-07-23T14:44:02+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20240723\/1406Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/H178\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea is not erupting. Increased earthquake activity and ground deformation at K\u012blauea\u2019s\u202fupper East Rift Zone began at approximately 3:30 a.m. HST on July 23, 2024, indicating the likely movement of magma in the subsurface. Accordingly, the USGS Hawaiian Volcano Observatory (HVO) is raising the Volcano Alert Level for ground-based hazards from ADVISORY to WATCH and the Aviation Color Code from YELLOW to ORANGE.   \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EEarthquake activity is centered near Pauahi Crater. The situation is rapidly evolving, and, at this time, it is not possible to say with certainty if this activity will lead to an eruption; the activity may remain below ground.  An eruption in K\u012blauea\u2019s upper East Rift Zone within Hawai\u2018i Volcanoes National Park is one potential outcome. It is not possible to say where such an outbreak may occur, but the area between Hi\u02bbiaka crater and Maunaulu in Hawai\u2018i Volcanoes National Park, is potentially at risk for a new lava outbreak based on past patterns of eruptive activity in this area. Past eruptions in this region of K\u012blauea's upper East Rift Zone, between Hi\u02bbiaka crater and Maunaulu, occurred over hours to about a month.  The location of any future outbreak will determine what areas could be in the path of new lava flows.\u202f \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA map of past eruptive activity is available here: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-cruising-chain-craters-road-recent-earthquakes-and-past\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-cruising-chain-craters-road-recent-earthquakes-and-past\u003C\/a\u003E.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor K\u012blauea. Should volcanic activity change significantly, a new Volcanic Activity Notice will be issued.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO is in close contact with Hawai\u2018i Volcanoes National Park. Temporary closures have been implemented as a result of this elevated activity: \u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/learn\/news\/20240722-earthquakes.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/learn\/news\/20240722-earthquakes.htm\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHazards are present on K\u012blauea and are described below. Residents and visitors should stay informed and follow County of Hawai\u2018i and Hawai\u02bbi Volcanoes National Park guidelines.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor more information about the meaning of volcano alert levels and aviation color codes, see \u003Ca href=\u0022https:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u0022\u003Ehttps:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u003C\/a\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShallow magma movement and eruptions can produce minor to severe ground fractures and subsidence features, which can affect the landscape, human activity, and infrastructure. These ground cracks can continue to widen and offset as magma migration continues, may have unstable overhanging edges, and should be avoided.\u202f \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EIf an eruption occurs, the opening phases are dynamic and conditions around the erupting fissures can change rapidly.\u202fAdditional ground cracking and outbreaks of lava around the active fissures are possible at any time, or, existing fissures can be reactivated. Hawaiian lava flows generally advance slowly downslope and can be avoided by people. They can destroy everything in their paths including vegetation and infrastructure\u2014which can cut off road access and utilities.\u202fHazards associated with active\u202for recent lava flows\u202finclude\u202fhot\u202fand glassy\u202f(sharp)\u202fsurfaces that can cause serious burns, abrasions, and lacerations\u202fupon contact with unprotected or exposed skin;\u202funeven and rough terrain can lead to falls\u202fand other injuries;\u202fhot temperatures that can cause heat\u202fexhaustion or dehydration, or\u202fin heavy rain can\u202fproduce steamy ground-fog that\u202fcan be acidic,\u202fseverely\u202flimiting\u202fvisibility and\u202fsometimes\u202fcausing\u202fdifficulty\u202fbreathing.\u202f\u202f\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHigh levels of volcanic gas\u2014primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)\u2014are emitted during eruptions and can have far-reaching effects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E is released from, it reacts in the atmosphere to create the visible haze known as vog (volcanic smog) that has been observed downwind of eruptive vents. Vog creates the potential for airborne health hazards to residents and visitors, damages agricultural crops and other plants, and affects livestock.\u202fFor more information on gas hazards at the summit of\u202fK\u012blauea, please see:\u202f\u003Ca href=\u0022https:\/\/pubs.er.usgs.gov\/publication\/fs20173017\u0022\u003Ehttps:\/\/pubs.er.usgs.gov\/publication\/fs20173017\u003C\/a\u003E. Vog\u202finformation can be found at\u202f\u003Ca href=\u0022https:\/\/gcc02.safelinks.protection.outlook.com\/?url=https%3A%2F%2Fvog.ivhhn.org%2F&data=05%7C01%7Cjschmith%40usgs.gov%7C427d46609bdc4ead4ded08dadc775c75%7C0693b5ba4b184d7b9341f32f400a5494%7C0%7C0%7C638064702452595397%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=6W1jNCk%2BzJ1xjuSnsXCxWjeJPiLXhxNmQtAGtuPzryM%3D&reserved=0\u0022\u003Ehttps:\/\/vog.ivhhn.org\u003C\/a\u003E.\u202f \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around K\u012blauea caldera from Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fthe rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since early 2008.\u202f  \u003Cbr\u003E \u003Cbr\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E. \u003Cbr\u003E \u003Cbr\u003EThe Hawaiian Volcano Observatory (HVO) continues to closely monitor K\u012blauea Volcano. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPlease\u202fsee the\u202fHawai\u02bbi\u202fVolcanoes National Park website for visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E.\u202f\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea updates will be issued daily. Should volcanic activity change significantly, a new VAN will be issued. Regularly scheduled updates are posted on the HVO website at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea\u202fhazards discussion:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"K\u012blauea upper East Rift Zone elevated unrest; status is being raised to ORANGE\/WATCH.","sentUtc":"2024-07-23","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2024-06-06T20:24:57+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2024-06-06T20:24:57+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2024-06-06T20:24:57+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20240708\/2054Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ECleveland (VNUM #311240)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/A515\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E5676 ft (1730 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe Alaska Volcano Observatory is lowering the Aviation Color Code to GREEN and Volcano Alert Level to NORMAL at Mount Cleveland. Sulfur dioxide gas emissions continue to be detected on local gas monitoring sensors, however, gas emission rates are now typical to average values since local monitoring began 2 years ago. Steaming from the summit, slightly elevated surface temperatures in the summit crater, and occasional local earthquakes are still seen at Mount Cleveland, but this activity represents background behavior at this highly active Aleutian volcano.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe last eruptive activity at Mount Cleveland was a short-lived explosion during the evening (local time) of June 1, 2020. Despite the current pause, the eruptive period at Mount Cleveland, dating back to 2001, remains ongoing and future explosions are likely. These have occurred without warning and typically generate small clouds of volcanic ash that are a hazard in the immediate vicinity of the volcano, though more significant ash emissions are possible.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMount Cleveland is currently monitored with a five-station real-time seismic network. Based on past events, explosive eruptions of Cleveland may occur with little or no warning. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enot applicable\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESteam and sulfur dioxide gas emissions continue from Cleveland\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ECleveland volcano forms the western portion of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. The volcano is located about 45 miles (75 km) west of the community of Nikolski, and 940 miles (1500 km) southwest of Anchorage. The most recent significant period of eruption began in February 2001 and produced 3 explosive events that generated ash clouds as high as 39,000 ft (11.8 km) above sea level. The 2001 eruption also produced a lava flow and hot avalanche that reached the sea. Since then, Cleveland has been intermittently active producing small lava flows, often followed by explosions that generate small ash clouds generally below 20,000 ft (6 km) above sea level. These explosions also launch debris onto the slopes of the cone producing hot pyroclastic avalanches and lahars that sometimes reach the coastline.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS, mhaney@usgs.gov, (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ETarsilo Girona, Acting Coordinating Scientist, UAFGI, tarsilo.girona@alaska.edu, (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Aviation Color Code\/Volcano Alert Level lowered to GREEN\/NORMAL.","sentUtc":"2024-07-08","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2024-07-08T19:53:30+00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2024-07-08T19:53:30+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2024-07-08T19:53:30+00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20240708\/2052Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAniakchak (VNUM #312090)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUNASSIGNED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/A516\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 56 deg 54 min W 158 deg 12 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Peninsula\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4400 ft (1341 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EField crews from the Alaska Volcano Observatory are performing seasonal maintenance on seismic monitoring equipment at Aniakchak Volcano. Enough local stations have been brought online to locate volcanic earthquakes and detect any potential activity above background at the volcano. As a result, the Aviation Color Code and Volcano Alert Level are being changed to GREEN\/NORMAL.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAniakchak volcano, located in the central portion of the Alaska Peninsula, consists of a stratovolcano edifice with a 6 mile (10 km) diameter summit caldera. The caldera-forming eruption occurred around 3,500 years ago. Post-caldera eruptions have produced lava domes, tuff cones, and larger spatter and scoria cone structures, including Half-Cone and Vent Mountain, all within the caldera. The most recent eruption occurred in 1931 and created a new vent and lava flows on the western caldera floor while spreading ash over much of southwestern Alaska. Aniakchak volcano is 16 miles (26 km) southeast of the nearest community, Port Heiden, and 416 miles (670 km) southwest of Anchorage, Alaska. It is located in Aniakchak National Monument and Preserve.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS, mhaney@usgs.gov, (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ETarsilo Girona, Acting Coordinating Scientist, UAFGI, tarsilo.girona@alaska.edu, (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/gcc02.safelinks.protection.outlook.com\/?url=http%3A%2F%2Fwww.avo.alaska.edu%2F&data=05%7C01%7Chdietterich%40usgs.gov%7C4e428a02cf274911103408db150551b8%7C0693b5ba4b184d7b9341f32f400a5494%7C0%7C0%7C638126884815330179%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=mrKsTvh8yVAs%2FbGq6tQapOq6Q773zJjI9UTvyFMD7YE%3D&reserved=0\u0022\u003Ehttp:\/\/www.avo.alaska.edu\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Monitoring stations online again, Aviation Color Code and Volcano Alert Level changed to GREEN\/NORMAL.","sentUtc":"2024-07-08","obs":"avo","vName":"Aniakchak","vnum":"312090","noticeId":"DOI-USGS-AVO-2024-07-08T20:02:22+00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2024-07-08T20:02:22+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2024-07-08T20:02:22+00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20240705\/2254Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ECleveland (VNUM #311240)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EGREEN\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/A507\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E5676 ft (1730 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003ESulfur dioxide gas emissions were detected on local gas monitoring sensors at Mount Cleveland starting June 21 with an increase in emission rate June 24–30. Although sulfur dioxide emissions declined to background levels on July 1, moderately elevated surface temperatures and vigorous steaming at the summit of the volcano observed over the past couple of days, suggest that Cleveland is in a state of volcanic unrest prompting the Alaska Volcano Observatory to upgrade the Aviation Color Code to YELLOW and Volcano Alert Level to ADVISORY.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe last eruptive activity at Mount Cleveland was a short-lived explosion during the evening (local time) of June 1, 2020. Despite the current pause, the eruptive period at Mount Cleveland, dating back to 2001, remains ongoing and future explosions are likely. These have occurred without warning and typically generate small clouds of volcanic ash that are a hazard in the immediate vicinity of the volcano, though more significant ash emissions are possible.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMount Cleveland is currently monitored with a five-station real-time seismic network. Based on past events, explosive eruptions of Cleveland may occur with little or no warning. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enot applicable\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESulfur dioxide gas emissions detected  on local gas monitoring sensors.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ECleveland volcano forms the western portion of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. The volcano is located about 45 miles (75 km) west of the community of Nikolski, and 940 miles (1500 km) southwest of Anchorage. The most recent significant period of eruption began in February 2001 and produced 3 explosive events that generated ash clouds as high as 39,000 ft (11.8 km) above sea level. The 2001 eruption also produced a lava flow and hot avalanche that reached the sea. Since then, Cleveland has been intermittently active producing small lava flows, often followed by explosions that generate small ash clouds generally below 20,000 ft (6 km) above sea level. These explosions also launch debris onto the slopes of the cone producing hot pyroclastic avalanches and lahars that sometimes reach the coastline.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Sulfur dioxide emissions detected. Aviation Color Code\/Volcano Alert Level upgraded to YELLOW\/ADVISORY.","sentUtc":"2024-07-05","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2024-07-05T18:35:33+00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2024-07-05T18:35:33+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2024-07-05T18:35:33+00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20240605\/2007Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/H115\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe eruption that began southwest of K\u012blauea summit on June 3, 2024, has been paused for 48 hours and is unlikely to restart. Accordingly, the USGS Hawaiian Volcano Observatory (HVO) is lowering the Volcano Alert Level for ground-based hazards from WATCH to ADVISORY and the Aviation Color Code from ORANGE to YELLOW.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ELava stopped erupting from the fissure vents at approximately 9:00 a.m. HST on June 3 and lava flows stagnated by noon that day. Tremor, degassing, and incandescence associated with the fissure vents have decreased substantially over the past 48 hours, making it unlikely that the eruption will resume. Overall seismicity and deformation in the summit region including the eruption area remain very low.  While decreasing, volcanic gas emissions at the eruption site remain well above background levels (100 tonnes per day), with a sulfur dioxide emission rate of 5,500 tonnes per day measured yesterday, June 4, down from 12,000-15,000 tonnes per day on June 3. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA map showing the distribution of lava flows from the June 3 eruption Southwest of K\u012blauea summit is available at: \u003Ca href=\u0022https:\/\/www.usgs.gov\/media\/images\/june-3-2024-kilauea-southwest-rift-zone-eruption-reference-map-updated-10pm-hst\u0022\u003Ehttps:\/\/www.usgs.gov\/media\/images\/june-3-2024-kilauea-southwest-rift-zone-eruption-reference-map-updated-10pm-hst\u003C\/a\u003E. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe last eruption in this area occurred in December 1974. The 1974 eruption was continuous for six hours before the eruption ended, compared to 8.5 hours for this recent eruption.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor K\u012blauea for signs of renewed activity. Should volcanic activity change significantly, a new Volcanic Activity Notice will be issued. All recent activity has occurred within the summit and upper rift zone regions. No unusual activity has been detected in the middle or lower East Rift Zone.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHazards are still present on K\u012blauea and are described below, but elevated sulfur dioxide gas emissions are likely to be persistent for days or weeks. Residents and visitors should stay informed and follow Hawaii County and Hawai\u02bbi Volcanoes National Park guidelines. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor more information about the meaning of volcano alert levels and aviation color codes, see \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u0022\u003Ehttps:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u003C\/a\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea eruptive activity on June 3 occurred within the closed area of Hawai\u02bbi Volcanoes National Park. High level of volcanic gas—primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)—being emitted is the primary hazard of concern, as this hazard can have far-reaching effects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E is released from the summit, it reacts in the atmosphere to create the visible haze known as vog (volcanic smog) that has been observed downwind of K\u012blauea. Vog creates the potential for airborne health hazards to residents and visitors, damages agricultural crops and other plants, and affects livestock.\u202fFor more information on gas hazards at the summit of\u202fK\u012blauea, please see:\u202f\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/pubs.er.usgs.gov\/publication\/fs20173017\u0022\u003Ehttps:\/\/pubs.er.usgs.gov\/publication\/fs20173017\u003C\/a\u003E. Vog\u202finformation can be found at\u202f\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/gcc02.safelinks.protection.outlook.com\/?url=https%3A%2F%2Fvog.ivhhn.org%2F&data=05%7C01%7Cjschmith%40usgs.gov%7C427d46609bdc4ead4ded08dadc775c75%7C0693b5ba4b184d7b9341f32f400a5494%7C0%7C0%7C638064702452595397%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=6W1jNCk%2BzJ1xjuSnsXCxWjeJPiLXhxNmQtAGtuPzryM%3D&reserved=0\u0022\u003Ehttps:\/\/vog.ivhhn.org\u003C\/a\u003E.\u202f \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera from Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fthe rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since early 2008.\u202f  \u003Cbr \/\u003E \u003Cbr \/\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E. \u003Cbr \/\u003E \u003Cbr \/\u003EThe Hawaiian Volcano Observatory (HVO) continues to closely monitor K\u012blauea Volcano. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPlease\u202fsee the\u202fHawai\u02bbi\u202fVolcanoes National Park website for visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E.\u202f\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea updates will be issued daily. Should volcanic activity change significantly, a new VAN will be issued. Regularly scheduled updates are posted on the HVO website at \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea\u202fhazards discussion:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E\u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003E \u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Eruption southwest of K\u012blauea summit in Hawaii Volcanoes National Park has been paused for 48 hours; status is being lowered to YELLOW\/ADVISORY.","sentUtc":"2024-06-05","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2024-04-20T08:52:03+00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2024-04-20T08:52:03+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2024-04-20T08:52:03+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20240603\/1827Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ERED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/H170\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea volcano is erupting. A new eruption began at approximately 12:30 a.m. HST on Monday, June 3, about 4 km (2.5 miles) southwest of K\u012blauea caldera within Hawai'i Volcanoes National Park. The eruption is currently ongoing but is taking place in a remote location within the national park, is low in eruptive volume, and does not pose an immediate threat to human life or critical infrastructure.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAccordingly, the USGS Hawaiian Volcano Observatory (HVO) is lowering the Volcano Alert Level for ground-based hazards from WARNING to WATCH and the Aviation Color Code from RED to ORANGE. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDue to the remote location of this eruption, the primary hazards at this time are airborne hazards related to gas emissions and tephra being blown down wind of the eruption. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor K\u012blauea for signs of increasing or decreasing activity. Should volcanic activity change significantly, a new Volcanic Activity Notice will be issued.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHazards are present on K\u012blauea and are described below. Residents and visitors should stay informed and follow County of Hawai‘i and Hawai\u02bbi Volcanoes National Park guidelines.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERates of seismicity and ground deformation beneath the East Rift Zone remain low. Current activity is restricted to the summit and south caldera region. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor more information about the meaning of volcano alert levels and aviation color codes, see \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u0022\u003Ehttps:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u003C\/a\u003E\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea eruptive activity is occurring within the closed area of Hawai\u02bbi Volcanoes National Park. High level of volcanic gas—primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)—being emitted is the primary hazard of concern, as this hazard can have far-reaching effects downwind. As SO\u003Csub\u003E2\u003C\/sub\u003E is released from the summit, it reacts in the atmosphere to create the visible haze known as vog (volcanic smog) that has been observed downwind of K\u012blauea. Vog creates the potential for airborne health hazards to residents and visitors, damages agricultural crops and other plants, and affects livestock.\u202fFor more information on gas hazards at the summit of\u202fK\u012blauea, please see:\u202f\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/pubs.er.usgs.gov\/publication\/fs20173017\u0022\u003Ehttps:\/\/pubs.er.usgs.gov\/publication\/fs20173017\u003C\/a\u003E. Vog\u202finformation can be found at\u202f\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/gcc02.safelinks.protection.outlook.com\/?url=https%3A%2F%2Fvog.ivhhn.org%2F&data=05%7C01%7Cjschmith%40usgs.gov%7C427d46609bdc4ead4ded08dadc775c75%7C0693b5ba4b184d7b9341f32f400a5494%7C0%7C0%7C638064702452595397%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=6W1jNCk%2BzJ1xjuSnsXCxWjeJPiLXhxNmQtAGtuPzryM%3D&reserved=0\u0022\u003Ehttps:\/\/vog.ivhhn.org\u003C\/a\u003E.\u202f \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera from Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fthe rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since early 2008.\u202f  \u003Cbr \/\u003E \u003Cbr \/\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E. \u003Cbr \/\u003E \u003Cbr \/\u003EThe Hawaiian Volcano Observatory (HVO) continues to closely monitor K\u012blauea Volcano. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPlease\u202fsee the\u202fHawai\u02bbi\u202fVolcanoes National Park website for visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E.\u202f\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca target=\u0022_blank\u0022 href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea updates will be issued daily. Should volcanic activity change significantly, a new VAN will be issued. Regularly scheduled updates are posted on the HVO website at \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/multimedia\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/multimedia\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea\u202fhazards discussion:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E\u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003E \u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"K\u012blauea is erupting southwest of K\u012blauea summit in Hawai'i Volcanoes National Park. No threat to human life or property. Status lowered to ORANGE\/WATCH.","sentUtc":"2024-06-03","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2024-06-03T16:36:43+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2024-06-03T16:36:43+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2024-06-03T16:36:43+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20240603\/1211Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/H167\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea volcano is erupting. A new eruption began at approximately 12:30 a.m. HST on Monday, June 3, likely about a mile (1-2 km) south of K\u012blauea caldera and north of the Koa'e fault system and Hilina Pali Road, within Hawai'i Volcanoes National Park.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAccordingly, the USGS Hawaiian Volcano Observatory (HVO) is raising the Volcano Alert Level for ground-based hazards from WATCH to WARNING and the Aviation Color Code from ORANGE to RED. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EGlow is visible in webcam imagery, indicating that lava is currently erupting from fissures. The most recent eruption in this region was during December 1974, which lasted only about 6 hours. At this time, it is not possible to say how long the eruption will last.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor K\u012blauea for signs of increasing or decreasing activity. Should volcanic activity change significantly, a new Volcanic Activity Notice will be issued.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHazards are present on K\u012blauea and are described below. Residents and visitors should stay informed and follow County of Hawai‘i and Hawai\u02bbi Volcanoes National Park guidelines.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERates of seismicity and ground deformation beneath the East Rift Zone and Southwest Rift Zone remain low. Current activity is restricted to the summit region. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor more information about the meaning of volcano alert levels and aviation color codes, see \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u0022\u003Ehttps:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u003C\/a\u003E\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea summit eruptive activity over the past several years has occurred at the base of Halema\u02bbuma\u02bbu crater and on the downdropped block, within the closed area of Hawai\u02bbi Volcanoes National Park. During K\u012blauea summit eruptions, the high level of volcanic gas—primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)—being emitted is the primary hazard of concern, as this hazard can have far-reaching effects downwind. Passive volcanic degassing can occur from within Halema\u02bbuma\u02bbu crater even during periods of no eruptive activity. As SO\u003Csub\u003E2\u003C\/sub\u003E is released from the summit, it reacts in the atmosphere to create the visible haze known as vog (volcanic smog) that has been observed downwind of K\u012blauea. Vog creates the potential for airborne health hazards to residents and visitors, damages agricultural crops and other plants, and affects livestock.\u202fFor more information on gas hazards at the summit of\u202fK\u012blauea, please see:\u202f\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/pubs.er.usgs.gov\/publication\/fs20173017\u0022\u003Ehttps:\/\/pubs.er.usgs.gov\/publication\/fs20173017\u003C\/a\u003E. Vog\u202finformation can be found at\u202f\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/gcc02.safelinks.protection.outlook.com\/?url=https%3A%2F%2Fvog.ivhhn.org%2F&data=05%7C01%7Cjschmith%40usgs.gov%7C427d46609bdc4ead4ded08dadc775c75%7C0693b5ba4b184d7b9341f32f400a5494%7C0%7C0%7C638064702452595397%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=6W1jNCk%2BzJ1xjuSnsXCxWjeJPiLXhxNmQtAGtuPzryM%3D&reserved=0\u0022\u003Ehttps:\/\/vog.ivhhn.org\u003C\/a\u003E.\u202f \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera from Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fthe rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since early 2008.\u202f  \u003Cbr \/\u003E \u003Cbr \/\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E. \u003Cbr \/\u003E \u003Cbr \/\u003EThe Hawaiian Volcano Observatory (HVO) continues to closely monitor K\u012blauea Volcano. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPlease\u202fsee the\u202fHawai\u02bbi\u202fVolcanoes National Park website for visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E.\u202f\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca target=\u0022_blank\u0022 href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea updates will be issued daily. Should volcanic activity change significantly, a new VAN will be issued. Regularly scheduled updates are posted on the HVO website at \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea\u202fhazards discussion:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E\u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003E \u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"K\u012blauea is erupting. A new eruption began just south of K\u012blauea summit in Hawai'i Volcanoes National Park at 12:30 a.m. HST. Status elevated to RED\/WARNING","sentUtc":"2024-06-03","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2024-06-02T23:32:01+00:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2024-06-02T23:32:01+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2024-06-02T23:32:01+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20240603\/0331Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/H166\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea is not erupting. Increased earthquake activity and ground deformation at K\u012blauea’s\u202fsummit began at approximately 12:00 p.m. HST on June 2, 2024, indicating the likely movement of magma in the subsurface. Rates of seismicity and deformation increased further after 5:00 p.m. HST. At this time, it is not possible to say with certainty if this activity will lead to an eruption – the activity may remain below ground. However, an eruption in K\u012blauea’s summit region within Hawai‘i Volcanoes National Park is one potential outcome.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAccordingly, the USGS Hawaiian Volcano Observatory (HVO) is raising the Volcano Alert Level for ground-based hazards from ADVISORY to WATCH and the Aviation Color Code from YELLOW to ORANGE.   \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor K\u012blauea for signs of increasing activity. Should volcanic activity change significantly, a new Volcanic Activity Notice will be issued.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERates of seismicity and ground deformation beneath the East Rift Zone and Southwest Rift Zone remain low. Current activity is restricted to the summit region.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHazards are still present on K\u012blauea and are described below. Residents and visitors should stay informed and follow County of Hawai‘i and Hawai\u02bbi Volcanoes National Park guidelines.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor more information about the meaning of volcano alert levels and aviation color codes, see \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u0022\u003Ehttps:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u003C\/a\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea summit eruptive activity over the past several years has occurred at the base of Halema\u02bbuma\u02bbu crater and on the downdropped block, within the closed area of Hawai\u02bbi Volcanoes National Park. During K\u012blauea summit eruptions, the high level of volcanic gas—primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)—being emitted is the primary hazard of concern, as this hazard can have far-reaching effects downwind. Passive volcanic degassing can occur from within Halema\u02bbuma\u02bbu crater even during periods of no eruptive activity. As SO\u003Csub\u003E2\u003C\/sub\u003E is released from the summit, it reacts in the atmosphere to create the visible haze known as vog (volcanic smog) that has been observed downwind of K\u012blauea. Vog creates the potential for airborne health hazards to residents and visitors, damages agricultural crops and other plants, and affects livestock.\u202fFor more information on gas hazards at the summit of\u202fK\u012blauea, please see:\u202f\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/pubs.er.usgs.gov\/publication\/fs20173017\u0022\u003Ehttps:\/\/pubs.er.usgs.gov\/publication\/fs20173017\u003C\/a\u003E. Vog\u202finformation can be found at\u202f\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/gcc02.safelinks.protection.outlook.com\/?url=https%3A%2F%2Fvog.ivhhn.org%2F&data=05%7C01%7Cjschmith%40usgs.gov%7C427d46609bdc4ead4ded08dadc775c75%7C0693b5ba4b184d7b9341f32f400a5494%7C0%7C0%7C638064702452595397%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=6W1jNCk%2BzJ1xjuSnsXCxWjeJPiLXhxNmQtAGtuPzryM%3D&reserved=0\u0022\u003Ehttps:\/\/vog.ivhhn.org\u003C\/a\u003E.\u202f \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera from Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fthe rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since early 2008.\u202f  \u003Cbr \/\u003E \u003Cbr \/\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E. \u003Cbr \/\u003E \u003Cbr \/\u003EThe Hawaiian Volcano Observatory (HVO) continues to closely monitor K\u012blauea Volcano. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPlease\u202fsee the\u202fHawai\u02bbi\u202fVolcanoes National Park website for visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E.\u202f\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca target=\u0022_blank\u0022 href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea updates will be issued daily. Should volcanic activity change significantly, a new VAN will be issued. Regularly scheduled updates are posted on the HVO website at \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea\u202fhazards discussion:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E\u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003E \u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Kilauea is not erupting. Increased earthquake activity and ground deformation at the summit have increased significantly. Status elevated to ORANGE\/WATCH.","sentUtc":"2024-06-03","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2024-06-02T23:28:46+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2024-06-02T23:28:46+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2024-06-02T23:28:46+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20240409\/1746Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAhyi Seamount (VNUM #284141)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EU.S. Geological Survey\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/N39\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 20 deg 25 min E 145 deg 1 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENorthern Mariana Islands\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E-259 ft (-79 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EDefinitive signs of unrest have not been observed at Ahyi Seamount since March 27, 2024, when satellite views last saw a plume of discolored water near the seamount. No significant activity has been detected at distant underwater pressure sensors near Wake Island (1,410 miles east of Ahyi) during this latest period of unrest, unlike previous episodes.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDue to the apparent absence of activity, and the lack of local monitoring stations near Ahyi Seamount, the Aviation Color Code and Volcano Alert Level are being lowered to UNASSIGNED.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENo volcanic cloud produced\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EWater discoloration no longer observed above seamount in satellite images\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAhyi seamount is a large conical submarine volcano that rises to within 450 ft (137 m) of the sea surface about 11 miles (18 km) southeast of Farallon de Pajaros (Uracas) Island in the northern Marianas, about 370 miles (600 km) north of the island of Saipan. In the past, discolored water has been observed over the submarine volcano. In 1979, the crew of a fishing boat felt shocks over the summit area and then observed upwelling of sulfur-bearing water. On April 24-25, 2001 an explosive submarine eruption was detected seismically from a seismic station on Rangiroa Atoll, Tuamotu Archipelago. The event was well constrained (+\/- 9 miles or 15 km) at a location near the southern base of Ahyi.\u003Cbr \/\u003E \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ECNMI Homeland Security and Emergency Management\u003Cbr \/\u003Ehttp:\/\/www.cnmihsem.gov.mp\/\u003Cbr \/\u003E\u003Cbr \/\u003EUSGS Northern Mariana Duty Scientist (907) 786-7497\u003Cbr \/\u003Ehttp:\/\/volcano.wr.usgs.gov\/cnmistatus.php\u003Cbr \/\u003E\u003Cbr \/\u003ESatellite information, Washington VAAC\u003Cbr \/\u003Ehttp:\/\/www.ssd.noaa.gov\/VAAC\/washington.html\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Signs of activity no longer observed; Aviation Color Code and Volcano Alert Level lowered to UNASSIGNED.","sentUtc":"2024-04-09","obs":"nmi","vName":"Ahyi Seamount","vnum":"284141","noticeId":"DOI-USGS-NMI-2024-04-09T15:46:39+00:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2024-04-09T15:46:39+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2024-04-09T15:46:39+00:00","nvewsThreat":"Very Low Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20240409\/1534Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAtka volcanic complex (VNUM #311160)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/A325\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 52 deg 19 min W 174 deg 8 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E5030 ft (1533 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EVolcanic activity at the Atka volcanic complex has decreased since a small explosion was detected from the summit crater of Korovin, one of several volcanoes there, on March 27 (AKDT). Although occasional small earthquakes and weak volcanic tremor continue to be observed, the current activity is at background levels. Due to this decrease in activity, the Alaska Volcano Observatory is lowering the Aviation Color Code and Volcano Alert Level to GREEN\/NORMAL.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Eno cloud observed in satellite\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe Atka volcanic complex forms the northern part of Atka Island, located about 16 km north of the community of Atka and 1,761 km southwest of Anchorage. The Atka volcanic complex includes a possible older caldera and several younger vents, including Korovin Volcano, Mount Kliuchef, and Sarichef Volcano. Korovin Volcano, a 1553-m-high (5030 ft) stratovolcano, has been the site of most historical volcanic activity, and has a small, roiling crater lake that occasionally produces energetic steam emissions. Korovin has erupted several times in the past 200 years, including 1973, 1987, and 1998, and has likely had small ash emissions as recently as 2005. Typical recent Korovin eruptions produce minor amounts of ash and occasional but small lava flows. Reports of the height of the ash plume produced by the 1998 eruption ranged as high as 10,600 m (35,000 feet) above sea level. Mount Kliuchef is composed of a series of five vents aligned northeast–southwest. The two main summit vents of Kliuchef appear relatively young and the easternmost was probably the source of an 1812 eruption that is sometimes attributed to Sarichef.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Activity has returned to background levels; Aviation Color Code and Alert Level have been lowered to GREEN\/NORMAL.","sentUtc":"2024-04-09","obs":"avo","vName":"Atka volcanic complex","vnum":"311160","noticeId":"DOI-USGS-AVO-2024-04-08T21:32:07+00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2024-04-08T21:32:07+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2024-04-08T21:32:07+00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20240328\/0506Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAtka volcanic complex (VNUM #311160)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EGREEN\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/A287\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 52 deg 19 min W 174 deg 8 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E5030 ft (1533 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EA small, short-lived explosion was detected at the Atka volcanic complex this evening at 19:36 AKDT March 27 (03:36 UTC March 28), and AVO is increasing the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.  The event was detected in local infrasound and seismic data and was followed by a few minutes of elevated seismic tremor. Processing of the local infrasound data indicates the explosion originated from the summit crater of Korovin, one of several volcanoes within the Atka volcanic complex. No ash emissions have been observed in satellite images.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Eno cloud observed in satellite\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe Atka volcanic complex forms the northern part of Atka Island, located about 16 km north of the community of Atka and 1,761 km southwest of Anchorage. The Atka volcanic complex includes a possible older caldera and several younger vents, including Korovin Volcano, Mount Kliuchef, and Sarichef Volcano. Korovin Volcano, a 1553-m-high (5030 ft) stratovolcano, has been the site of most historical volcanic activity, and has a small, roiling crater lake that occasionally produces energetic steam emissions. Korovin has erupted several times in the past 200 years, including 1973, 1987, and 1998, and has likely had small ash emissions as recently as 2005. Typical recent Korovin eruptions produce minor amounts of ash and occasional but small lava flows. Reports of the height of the ash plume produced by the 1998 eruption ranged as high as 10,600 m (35,000 feet) above sea level. Mount Kliuchef is composed of a series of five vents aligned northeast–southwest. The two main summit vents of Kliuchef appear relatively young and the easternmost was probably the source of an 1812 eruption that is sometimes attributed to Sarichef.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Raised Aviation Color Code and Alert Level to YELLOW\/ADVISORY due to small explosion. No ash observed.","sentUtc":"2024-03-28","obs":"avo","vName":"Atka volcanic complex","vnum":"311160","noticeId":"DOI-USGS-AVO-2024-03-28T04:57:02+00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2024-03-28T04:57:02+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2024-03-28T04:57:02+00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20240305\/2050Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EGareloi (VNUM #311070)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/A241\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 51 deg 47 min W 178 deg 47 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E5161 ft (1573 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EVolcanic activity at Mount Gareloi (Gareloi volcano) has decreased over the past few weeks.  Occasional small earthquakes continue to be observed; however, the current activity is at background levels. Due to this decrease in activity, the Alaska Volcano Observatory is lowering the Aviation Color Code and Volcano Alert Level to GREEN\/NORMAL.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMount Gareloi is monitored by a local seismic and infrasound network, satellite data, and regional infrasound and lightning-detection networks.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMount Gareloi, which makes up all of Gareloi Island, is a stratovolcano located in the Delarof Islands group of the Aleutian Islands, about 2,000 km (1,242 mi) west-southwest of Anchorage and about 150 km (93 mi) west of Adak, the westernmost community in Alaska. This small volcano is 10 × 8 km (6.2 × 5.0 mi) in diameter at its base with two summits, separated by a narrow saddle. The northern, slightly higher peak contains crater about 300 m (1,000 ft) across. The southern summit has a crater open to the south and a persistent degassing vent (fumarole) on its western rim. Gareloi has been one of the most active in the Aleutians since the 1740s, with 16 reports of eruptive activity at Gareloi since 1760. In 1929, its largest historical eruption produced sixteen small south- to southeast-trending craters that extend from the southern summit to the coast, as well as lava flows and pyroclastic deposits on the southeastern flank of the volcano. Eruptions of Gareloi commonly produce ash clouds and lava flows, and the primary hazard is airborne clouds of ash that could affect aircraft. Since seismic instruments were installed in 2003, they have detected small but consistent seismic signals from beneath Mount Gareloi’s edifice.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Seismic activity decreased. Aviation Color Code and Volcano Alert Level lowered to GREEN\/NORMAL","sentUtc":"2024-03-05","obs":"avo","vName":"Gareloi","vnum":"311070","noticeId":"DOI-USGS-AVO-2024-03-05T00:01:27+00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2024-03-05T00:01:27+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2024-03-05T00:01:27+00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20240227\/2010Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKanaga (VNUM #311110)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/A217\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 51 deg 55 min W 177 deg 9 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4288 ft (1307 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EVolcanic unrest at Kanaga Volcano has subsided over the past several weeks and the Aviation Color Code is being decreased to GREEN and the Volcano Alert Level to NORMAL. Seismicity, which was elevated following a small explosion and ground-cracking event on December 18, 2023, has decreased to background levels. Satellite data show that there have been no recent surface changes, elevated temperatures, or gas emissions. When atmospheric conditions are favorable, web camera and satellite data show intermittent steaming from the crack near the summit crater.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ELocal seismic and infrasound sensors and web cameras are used to monitor Kanaga. AVO also uses regional infrasound and lightning networks and a variety of satellite data.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EKanaga Volcano occupies the northern corner of Kanaga Island, one of the most southerly members of the central Aleutian chain. It is a symmetric composite cone 4288 ft (1307 m) high and 3 miles (4.8 km) in diameter at sea level, built of interbedded basaltic and andesitic lava flows, scoria layers, and pyroclastic rocks. Kanaga Volcano’s last significant eruption was in 1994–1995. At least two significant ash plumes were recorded over the course of this eruption: the first, to ~25,000 ft (7.5 km), occurred on February 21, 1995 and the second on August 18, 1995, when an eruption cloud reached ~15,000 ft. (4.5 km). A light dusting of ash fell on the community of Adak and air traffic was disrupted due to continuing low-level activity and cloudy conditions which prevented visual approaches to the Adak airfield.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHannah Dietterich, Acting Scientist-in-Charge, USGS hdietterich@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003Ehttp:\/\/www.avo.alaska.edu\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Unrest has subsided and the Aviation Color Code and Volcano Alert Level are being decreased.","sentUtc":"2024-02-27","obs":"avo","vName":"Kanaga","vnum":"311110","noticeId":"DOI-USGS-AVO-2024-02-27T19:02:48+00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2024-02-27T19:02:48+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2024-02-27T19:02:48+00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20240217\/2026Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/A176\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is not showing any signs of ongoing ash emissions or eruptive activity. Seismicity remains elevated with ongoing volcanic earthquakes, but there is no indication of explosive activity or the presence of lava in the crater. The current activity is consistent with continued volcanic unrest but not an active eruption, and AVO is lowering the Aviation Color Code to YELLOW and Volcano Alert Level to ADVISORY.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe last significant eruptive activity was in November 2023.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network. In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to monitor the volcano.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPavel Izbekov, Acting Coordinating Scientist, UAFGI peizbekov@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Aviation Color Code and Volcano Alert Level decreased to YELLOW\/ADVISORY","sentUtc":"2024-02-17","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2024-02-16T21:16:48+00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2024-02-16T21:16:48+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2024-02-16T21:16:48+00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20240212\/2210Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EGareloi (VNUM #311070)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EGREEN\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/A158\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 51 deg 47 min W 178 deg 47 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E5161 ft (1573 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EOver the past several hours, AVO has detected an increase in seismicity at Mount Gareloi (Gareloi volcano) beginning at 09:15 AKST (18:15 UTC). The current activity marks a change in character above background rates, and AVO is raising the Aviation Color Code to YELLOW and Volcano Alert Level to ADVISORY.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThere have been no other notable changes at the volcano in satellite data or webcam views. Mount Gareloi persistently emits magmatic gases from a fumarole field on the south crater and commonly exhibits low-level seismic activity. These observations suggest the presence of shallow magma and potential interaction with a hydrothermal system. The current increase in seismicity likely reflects a change to the magmatic-hydrothermal system, but it is not clear that the likelihood of a volcanic eruption has increased. AVO will continue to monitor activity to determine if the recent changes are related to influx of new magma or other changes to the magma system.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMount Gareloi is monitored by a local seismic and infrasound network, satellite data, and regional infrasound and lightning-detection networks.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMount Gareloi, which makes up all of Gareloi Island, is a stratovolcano located in the Delarof Islands group of the Aleutian Islands, about 2,000 km (1,242 mi) west-southwest of Anchorage and about 150 km (93 mi) west of Adak, the westernmost community in Alaska. This small volcano is 10 × 8 km (6.2 × 5.0 mi) in diameter at its base with two summits, separated by a narrow saddle. The northern, slightly higher peak contains crater about 300 m (1,000 ft) across. The southern summit has a crater open to the south and a persistent degassing vent (fumarole) on its western rim. Gareloi has been one of the most active in the Aleutians since the 1740s, with 16 reports of eruptive activity at Gareloi since 1760. In 1929, its largest historical eruption produced sixteen small south- to southeast-trending craters that extend from the southern summit to the coast, as well as lava flows and pyroclastic deposits on the southeastern flank of the volcano. Eruptions of Gareloi commonly produce ash clouds and lava flows, and the primary hazard is airborne clouds of ash that could affect aircraft. Since seismic instruments were installed in 2003, they have detected small but consistent seismic signals from beneath Mount Gareloi’s edifice.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERonni Grapenthin, Acting Coordinating Scientist, UAFGI, rgrapenthin@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Increase in seismic activity. Aviation Color Code and Volcano Alert Level raised to YELLOW\/ADVISORY","sentUtc":"2024-02-12","obs":"avo","vName":"Gareloi","vnum":"311070","noticeId":"DOI-USGS-AVO-2024-02-12T21:48:20+00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2024-02-12T21:48:20+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2024-02-12T21:48:20+00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20240211\/2146Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/A152\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EVolcanic activity at Shishaldin Volcano has increased slightly, and minor ash emissions were observed in a web camera image from 18:25 UTC (9:25 AM) this morning. The ash in the web camera image extends from the summit crater and drapes down over the volcano's north flank. This ash emission episode corresponds with seismic signals typically associated with surficial mass flows. The low-level ash cloud may result from a non-eruptive collapse of previously emplaced ash and pyroclastic debris on the upper part of the Shishaldin cone.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EClouds have obscured summit views in web camera images after the 18:25 UTC image. No ash clouds have been observed in satellite imagery. Thus, the Aviation Color Code and the Volcano Alert Level are being raised to ORANGE\/WATCH.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network. In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAt summit (9375 ft)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EEvident in ony 1 web cam image from 18:25 UTC\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERonni Grapenthin, Acting Coordinating Scientist, UAFGI, rgrapenthin@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Aviation Color Code and Volcano Alert Level increased to Orange due to minor ash emissions.","sentUtc":"2024-02-11","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2024-02-11T21:12:44+00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2024-02-11T21:12:44+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2024-02-11T21:12:44+00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20240203\/1810Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/H53\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEarthquake and ground deformation rates extending from K\u012blauea summit southwest along the Koa‘e fault system have decreased significantly over the past 24 hours. The intrusion of magma into this area appears to have slowed, and the likelihood of an eruption has decreased.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAccordingly, the USGS Hawaiian Volcano Observatory (HVO) is lowering the Volcano Alert Level for ground-based hazards from WATCH to ADVISORY and the Aviation Color Code from ORANGE to YELLOW.   \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EIn total, more than 3,000 earthquakes were recorded over the past week during this event, which coincided with ground deformation patterns indicative of magma moving from beneath the summit to the southwest under the Koa‘e fault system. More information on this intrusive activity will be available in the K\u012blauea daily update published later today. Additional details on this event can be found in previously published official notices:  \u003C\/p\u003E\u003Cul\u003E\u003Cli\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFebruary 2 daily update: \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/volcanoes.usgs.gov\/hans-public\/notice\/DOI-USGS-HVO-2024-02-02T20:02:36+00:00\u0022\u003E\u003Cu\u003Ehttps:\/\/volcanoes.usgs.gov\/hans-public\/notice\/DOI-USGS-HVO-2024-02-02T20:02:36+00:00\u003C\/u\u003E\u003C\/a\u003E  \u003C\/p\u003E\u003C\/li\u003E\u003C\/ul\u003E\u003Cul\u003E\u003Cli\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFebruary 1 daily update: \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/volcanoes.usgs.gov\/hans-public\/notice\/DOI-USGS-HVO-2024-02-01T19:44:10+00:00\u0022\u003E\u003Cu\u003Ehttps:\/\/volcanoes.usgs.gov\/hans-public\/notice\/DOI-USGS-HVO-2024-02-01T19:44:10+00:00\u003C\/u\u003E\u003C\/a\u003E  \u003C\/p\u003E\u003C\/li\u003E\u003Cli\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EJanuary 31 daily update: \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/volcanoes.usgs.gov\/hans-public\/notice\/DOI-USGS-HVO-2024-01-31T10:20:40-08:00\u0022\u003E\u003Cu\u003Ehttps:\/\/volcanoes.usgs.gov\/hans-public\/notice\/DOI-USGS-HVO-2024-01-31T10:20:40-08:00\u003C\/u\u003E\u003C\/a\u003E  \u003C\/p\u003E\u003C\/li\u003E\u003Cli\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EJanuary 31 Volcanic Activity Notice: \u003Cu\u003E \u003C\/u\u003E\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/volcanoes.usgs.gov\/hans-public\/notice\/DOI-USGS-HVO-2023-10-06T18:55:23-07:00\u0022\u003E\u003Cu\u003Ehttps:\/\/volcanoes.usgs.gov\/hans-public\/notice\/DOI-USGS-HVO-2023-10-06T18:55:23-07:00\u003C\/u\u003E\u003C\/a\u003E   \u003C\/p\u003E\u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor K\u012blauea for signs of renewed activity. Should volcanic activity change significantly, a new Volcanic Activity Notice will be issued.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHazards are still present on K\u012blauea and are described below. Residents and visitors should stay informed and follow County of Hawai‘i and Hawai\u02bbi Volcanoes National Park guidelines.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor more information about the meaning of volcano alert levels and aviation color codes, see \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u0022\u003Ehttps:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u003C\/a\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea summit eruptive activity over the past several years has occurred at the base of Halema\u02bbuma\u02bbu crater and on the downdropped block, within the closed area of Hawai\u02bbi Volcanoes National Park. During K\u012blauea summit eruptions, the high level of volcanic gas—primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)—being emitted is the primary hazard of concern, as this hazard can have far-reaching effects downwind. Passive volcanic degassing can occur from within Halema\u02bbuma\u02bbu crater even during periods of no eruptive activity. As SO\u003Csub\u003E2\u003C\/sub\u003E is released from the summit, it reacts in the atmosphere to create the visible haze known as vog (volcanic smog) that has been observed downwind of K\u012blauea. Vog creates the potential for airborne health hazards to residents and visitors, damages agricultural crops and other plants, and affects livestock.\u202fFor more information on gas hazards at the summit of\u202fK\u012blauea, please see:\u202f\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/pubs.er.usgs.gov\/publication\/fs20173017\u0022\u003Ehttps:\/\/pubs.er.usgs.gov\/publication\/fs20173017\u003C\/a\u003E. Vog\u202finformation can be found at\u202f\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/gcc02.safelinks.protection.outlook.com\/?url=https%3A%2F%2Fvog.ivhhn.org%2F&data=05%7C01%7Cjschmith%40usgs.gov%7C427d46609bdc4ead4ded08dadc775c75%7C0693b5ba4b184d7b9341f32f400a5494%7C0%7C0%7C638064702452595397%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=6W1jNCk%2BzJ1xjuSnsXCxWjeJPiLXhxNmQtAGtuPzryM%3D&reserved=0\u0022\u003Ehttps:\/\/vog.ivhhn.org\u003C\/a\u003E.\u202f \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera from Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fthe rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since early 2008.\u202f  \u003Cbr \/\u003E \u003Cbr \/\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E. \u003Cbr \/\u003E \u003Cbr \/\u003EThe Hawaiian Volcano Observatory (HVO) continues to closely monitor K\u012blauea Volcano. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPlease\u202fsee the\u202fHawai\u02bbi\u202fVolcanoes National Park website for visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E.\u202f\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea updates will be issued daily. Should volcanic activity change significantly, a new VAN will be issued. Regularly scheduled updates are posted on the HVO website at \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea\u202fhazards discussion:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E\u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003E \u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Kilauea summit is not erupting. Decreased earthquake activity and ground deformation; status lowered to YELLOW\/ADVISORY.","sentUtc":"2024-02-03","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2024-02-03T18:02:36+00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2024-02-03T18:02:36+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2024-02-03T18:02:36+00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20240131\/1441Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/H333\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea volcano is not erupting. Increased earthquake activity and inflationary ground deformation at K\u012blauea’s\u202fsummit began occurring during the early morning hours of January 31, 2024, indicating movement of magma in the subsurface.   \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe USGS Hawaiian Volcano Observatory is raising the volcano alert level\/aviation color code for K\u012blauea from ADVISORY\/YELLOW to WATCH\/ORANGE due to this activity.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAt this time, it is not possible to say with certainty if this activity will lead to an eruption; the activity may remain below ground. However, an eruption in K\u012blauea’s summit region, within Hawai‘i Volcanoes National Park and away from infrastructure, is one potential outcome. Patterns of earthquake activity and ground deformation are concentrated south of the caldera region. Any new eruptive activity could occur in or near Halema\u02bbuma\u02bbu crater or the region south of K\u012blauea caldera, within the closed area of Hawai\u02bbi Volcanoes National Park. \u003Cbr \/\u003E\u003Cbr \/\u003EHVO is in constant communication with Hawai‘i Volcanoes National Park as this situation evolves. The activity is confined entirely within the park.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor this activity. Should activity change significantly, a new Volcanic Activity Notice will be issued. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHazards are present on K\u012blauea and are described below. Residents and visitors should stay informed and follow County of Hawai‘i and Hawai\u02bbi Volcanoes National Park guidelines. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor more information about the meaning of volcano alert levels and aviation color codes, see \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u0022\u003Ehttps:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u003C\/a\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea summit eruptive activity over the past several years has occurred at the base of Halema\u02bbuma\u02bbu crater and on the downdropped block, within the closed area of Hawai\u02bbi Volcanoes National Park. During K\u012blauea summit eruptions, the high level of volcanic gas—primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)—being emitted is the primary hazard of concern, as this hazard can have far-reaching effects downwind. Passive volcanic degassing can occur from within Halema\u02bbuma\u02bbu crater even during periods of no eruptive activity. As SO\u003Csub\u003E2\u003C\/sub\u003E is released from the summit, it reacts in the atmosphere to create the visible haze known as vog (volcanic smog) that has been observed downwind of K\u012blauea. Vog creates the potential for airborne health hazards to residents and visitors, damages agricultural crops and other plants, and affects livestock.\u202fFor more information on gas hazards at the summit of\u202fK\u012blauea, please see:\u202f\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/pubs.er.usgs.gov\/publication\/fs20173017\u0022\u003Ehttps:\/\/pubs.er.usgs.gov\/publication\/fs20173017\u003C\/a\u003E. Vog\u202finformation can be found at\u202f\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/gcc02.safelinks.protection.outlook.com\/?url=https%3A%2F%2Fvog.ivhhn.org%2F&data=05%7C01%7Cjschmith%40usgs.gov%7C427d46609bdc4ead4ded08dadc775c75%7C0693b5ba4b184d7b9341f32f400a5494%7C0%7C0%7C638064702452595397%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=6W1jNCk%2BzJ1xjuSnsXCxWjeJPiLXhxNmQtAGtuPzryM%3D&reserved=0\u0022\u003Ehttps:\/\/vog.ivhhn.org\u003C\/a\u003E.\u202f \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera from Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fthe rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since early 2008.\u202f  \u003Cbr \/\u003E \u003Cbr \/\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E. \u003Cbr \/\u003E \u003Cbr \/\u003EThe Hawaiian Volcano Observatory (HVO) continues to closely monitor K\u012blauea Volcano. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPlease\u202fsee the\u202fHawai\u02bbi\u202fVolcanoes National Park website for visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E.\u202f\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea updates will be issued daily. Should volcanic activity change significantly, a new VAN will be issued. Regularly scheduled updates are posted on the HVO website at \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea\u202fhazards discussion:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E\u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003E \u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"K\u012blauea summit is not erupting. Increased earthquake activity and ground deformation; status raised to ORANGE\/WATCH.","sentUtc":"2024-01-31","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2023-10-06T18:55:23-07:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2023-10-06T18:55:23-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2023-10-06T18:55:23-07:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20240113\/2250Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAhyi Seamount (VNUM #284141)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUNASSIGNED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EU.S. Geological Survey\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/N5\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 20 deg 25 min E 145 deg 1 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENorthern Mariana Islands\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E-259 ft (-79 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003ESigns of unrest at Ahyi Seamount have been observed in satellite data over the past few weeks. Plumes of discolored water were observed drifting 1.5–6.2 miles (2.4–10 km) away from the volcano in satellite images on December 24 and 31, 2023 and January 4 and 10, 2024. Nothing significant has been detected from the direction of Ahyi in hydroacoustic array data at Wake Island; however, submarine plumes have been observed at Ahyi in the past without clear hydroacoustic signals. Due to the increased likelihood of an underwater eruption occurring at Ahyi Seamount, the Aviation Color Code and Volcano Alert Level are being raised to YELLOW and ADVISORY. We will continue to monitor satellite and distal hydroacoustic data for additional evidence of volcanic activity.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAn undersea eruption at Ahyi Seamount was last detected starting mid-October 2022. The activity appeared to pause beginning in early April 2023 but briefly resumed in late May 2023.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENo volcanic cloud produced\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAhyi seamount is a large conical submarine volcano that rises to within 450 ft (137 m) of the sea surface about 11 miles (18 km) southeast of Farallon de Pajaros (Uracas) Island in the northern Marianas, about 370 miles (600 km) north of the island of Saipan. In the past, discolored water has been observed over the submarine volcano. In 1979, the crew of a fishing boat felt shocks over the summit area and then observed upwelling of sulfur-bearing water. On April 24-25, 2001 an explosive submarine eruption was detected seismically from a seismic station on Rangiroa Atoll, Tuamotu Archipelago. The event was well constrained (+\/- 9 miles or 15 km) at a location near the southern base of Ahyi.\u003Cbr \/\u003E \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ECNMI Homeland Security and Emergency Management\u003Cbr \/\u003Ehttp:\/\/www.cnmihsem.gov.mp\/\u003Cbr \/\u003E\u003Cbr \/\u003EUSGS Northern Mariana Duty Scientist (907) 786-7497\u003Cbr \/\u003Ehttp:\/\/volcano.wr.usgs.gov\/cnmistatus.php\u003Cbr \/\u003E\u003Cbr \/\u003ESatellite information, Washington VAAC\u003Cbr \/\u003Ehttp:\/\/www.ssd.noaa.gov\/VAAC\/washington.html\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Plume of discolored water observed near Ahyi seamount in satellite data.  ","sentUtc":"2024-01-13","obs":"nmi","vName":"Ahyi Seamount","vnum":"284141","noticeId":"DOI-USGS-NMI-2024-01-13T14:48:10-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2024-01-13T14:48:10-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2024-01-13T14:48:10-08:00","nvewsThreat":"Very Low Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20240110\/2004Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ETrident (VNUM #312160)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/A38\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 58 deg 14 min W 155 deg 6 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Peninsula\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E3599 ft (1097 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EVolcanic activity beneath Trident Volcano has decreased over the past month.  Occasional small earthquakes continue to be observed; however, the current activity is at background levels.  No evidence of ground deformation has been observed since the end of November 2023.  Due to this decrease in activity, the Alaska Volcano Observatory is lowering the Aviation Color Code and Volcano Alert Level to GREEN\/NORMAL.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAVO monitors Trident with a local network of seismometers, a webcam, remote sensing data, and regional infrasound and lightning networks. To view current monitoring data, see \u003Ca href=\u0022https:\/\/avo.alaska.edu\/activity\/Trident.php\u0022\u003Ehttps:\/\/avo.alaska.edu\/activity\/Trident.php\u003C\/a\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ETrident Volcano is one of the Katmai group of volcanoes located within Katmai National Park and Preserve on the Alaska Peninsula. Trident consists of a complex of four cones and numerous lava domes, all andesite and dacite in composition, that reach as high as 6,115 ft above sea level. An eruption beginning in 1953 constructed the newest cone, Southwest Trident, and four lava flows on the flank of the older complex. This eruption continued through 1974 and produced ash (an initial plume rose to 30,000 ft asl), bombs, and lava at various times. Fumaroles remain active on the summit of Southwest Trident and on the southeast flank of the oldest, central cone. Trident is located 148 km (92 miles) southeast of King Salmon and 440 km (273 miles) southwest of Anchorage.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAaron Wech, Acting Scientist-in-Charge, USGS awech@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at \u003Ca href=\u0022http:\/\/www.avo.alaska.edu\u0022\u003Ehttp:\/\/www.avo.alaska.edu\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Seismicity beneath Trident Volcano has decreased; Aviation Color Code and Volcano Alert Level lowered to GREEN\/NORMAL","sentUtc":"2024-01-10","obs":"avo","vName":"Trident","vnum":"312160","noticeId":"DOI-USGS-AVO-2024-01-10T09:56:45-09:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2024-01-10T09:56:45-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2024-01-10T09:56:45-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20240102\/2033Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/A5\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EVolcanic activity at Shishaldin Volcano has gradually declined over the past two months since the last significant explosive event on November 3, 2023. Small explosions within the summit crater continue to be detected in infrasound data during periods of quiet (low wind) conditions but new deposits have not recently been seen inside or outside the crater. Satellite-observed surface temperatures remain low, suggesting lava is not present in the crater. The current activity is consistent with continued volcanic unrest but not an active eruption. Thus, the Aviation Color Code and the Volcano Alert Level are being decreased to YELLOW\/ADVISORY.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network. In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone observed\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Eintermittent steaming continues\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDave Schneider, Acting Scientist-in-Charge, USGS djschneider@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Aviation Color Code and Volcano Alert Level lowered due to decreased activity. ","sentUtc":"2024-01-02","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2024-01-02T10:41:08-09:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2024-01-02T10:41:08-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2024-01-02T10:41:08-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20240101\/2222Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAhyi Seamount (VNUM #284141)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUNASSIGNED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EU.S. Geological Survey\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2024\/N1\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 20 deg 25 min E 145 deg 1 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENorthern Mariana Islands\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E-259 ft (-79 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EA plume of discolored water was observed in the vicinity of Ahyi Seamount in satellite images from yesterday afternoon (January 1, 2024 local time). It is possible that this plume is due to underwater volcanic activity however pressure sensors at Wake Island that have been used in the past to confirm underwater volcanic activity are not currently operational. More distant sensors have not registered any activity.  It is therefore not possible to confirm volcanic activity at Ahyi Seamount in independent data streams and the Aviation Color Code and Volcano Alert Level remain at UNASSIGNED. We will continue to monitor satellite data for additional evidence of discolored water associated with underwater volcanic activity.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EStarting mid-October 2022, hydroacoustic sensors at Wake Island, 1,410 miles (2,270 km) east of Ahyi, began recording signals consistent with activity from an undersea volcanic source. In collaboration with the Laboratoire de Geophysique in Tahiti, a combined analysis of the hydroacoustic signals and data from seismic stations located at Guam and Chichijima Island, Japan, confirmed that the source of this activity was at or near Ahyi seamount. Observations of discolored water above the seamount in satellite data confirmed activity at Ahyi. The activity appears to have paused beginning in early April 2023 but briefly resumed in late May 2023.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENo volcanic cloud produced\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAhyi seamount is a large conical submarine volcano that rises to within 450 ft (137 m) of the sea surface about 11 miles (18 km) southeast of Farallon de Pajaros (Uracas) Island in the northern Marianas, about 370 miles (600 km) north of the island of Saipan. In the past, discolored water has been observed over the submarine volcano. In 1979, the crew of a fishing boat felt shocks over the summit area and then observed upwelling of sulfur-bearing water. On April 24-25, 2001 an explosive submarine eruption was detected seismically from a seismic station on Rangiroa Atoll, Tuamotu Archipelago. The event was well constrained (+\/- 9 miles or 15 km) at a location near the southern base of Ahyi.\u003Cbr \/\u003E \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ECNMI Homeland Security and Emergency Management\u003Cbr \/\u003Ehttp:\/\/www.cnmihsem.gov.mp\/\u003Cbr \/\u003E\u003Cbr \/\u003EUSGS Northern Mariana Duty Scientist (907) 786-7497\u003Cbr \/\u003Ehttp:\/\/volcano.wr.usgs.gov\/cnmistatus.php\u003Cbr \/\u003E\u003Cbr \/\u003ESatellite information, Washington VAAC\u003Cbr \/\u003Ehttp:\/\/www.ssd.noaa.gov\/VAAC\/washington.html\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Plume of discolored water observed near Ahyi seamount in satellite data.  ","sentUtc":"2024-01-01","obs":"nmi","vName":"Ahyi Seamount","vnum":"284141","noticeId":"DOI-USGS-NMI-2024-01-01T12:52:01-09:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2024-01-01T12:52:01-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2024-01-01T12:52:01-09:00","nvewsThreat":"Very Low Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20231219\/2101Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKanaga (VNUM #311110)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EGREEN\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1742\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 51 deg 55 min W 177 deg 9 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4288 ft (1307 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EA small explosion was detected at Kanaga Volcano overnight at 22:31 AKST Dec 18 (07:31 UTC Dec. 19), and AVO is increasing the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.  The event was detected in local infrasound and seismic data and was followed by elevated earthquake seismicity that is ongoing.  No ash emisions have been observed in partly cloudy satellite images.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003Ehttp:\/\/www.avo.alaska.edu\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Small explosion followed by seismic unrest","sentUtc":"2023-12-19","obs":"avo","vName":"Kanaga","vnum":"311110","noticeId":"DOI-USGS-AVO-2023-12-19T11:32:50-09:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-12-19T11:32:50-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-12-19T11:32:50-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20231124\/1912Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EBogoslof (VNUM #311300)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1661\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E492 ft (150 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EFollowing the seismic swarm that began at Bogoslof around October 22, 2023 the frequency of earthquakes has now subsided to background levels. During the swarm 5 to 10 events per hour and up to a total of ~1,100 earthquakes were recorded in one week. The decline in seismicity has been observed over the past 3 weeks, with the last moderate earthquake (M2.7) recorded on November 9. No other signs of volcanic unrest have been detected. In response, AVO is lowering the Aviation Color Code and Volcano Alert Level to UNASSIGNED. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBogoslof volcano is monitored using a single local seismic station, distant seismic and infrasound instruments, satellite data, and lightning networks.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003C!--[if gte vml 1]\u003E\u003Cv:shapetype id=\u0022_x0000_t75\u0022\u003Cbr \/\u003E\r\n coordsize=\u002221600,21600\u0022 o:spt=\u002275\u0022 o:preferrelative=\u0022t\u0022 path=\u0022m@4@5l@4@11@9@11@9@5xe\u0022\u003Cbr \/\u003E\r\n filled=\u0022f\u0022 stroked=\u0022f\u0022\u003E\u003Cbr \/\u003E\r\n \u003Cv:stroke joinstyle=\u0022miter\u0022\/\u003E\u003Cbr \/\u003E\r\n \u003Cv:formulas\u003E\u003Cbr \/\u003E\r\n  \u003Cv:f eqn=\u0022if lineDrawn pixelLineWidth 0\u0022\/\u003E\u003Cbr \/\u003E\r\n  \u003Cv:f eqn=\u0022sum @0 1 0\u0022\/\u003E\u003Cbr \/\u003E\r\n  \u003Cv:f eqn=\u0022sum 0 0 @1\u0022\/\u003E\u003Cbr \/\u003E\r\n  \u003Cv:f eqn=\u0022prod @2 1 2\u0022\/\u003E\u003Cbr \/\u003E\r\n  \u003Cv:f eqn=\u0022prod @3 21600 pixelWidth\u0022\/\u003E\u003Cbr \/\u003E\r\n  \u003Cv:f eqn=\u0022prod @3 21600 pixelHeight\u0022\/\u003E\u003Cbr \/\u003E\r\n  \u003Cv:f eqn=\u0022sum @0 0 1\u0022\/\u003E\u003Cbr \/\u003E\r\n  \u003Cv:f eqn=\u0022prod @6 1 2\u0022\/\u003E\u003Cbr \/\u003E\r\n  \u003Cv:f eqn=\u0022prod @7 21600 pixelWidth\u0022\/\u003E\u003Cbr \/\u003E\r\n  \u003Cv:f eqn=\u0022sum @8 21600 0\u0022\/\u003E\u003Cbr \/\u003E\r\n  \u003Cv:f eqn=\u0022prod @7 21600 pixelHeight\u0022\/\u003E\u003Cbr \/\u003E\r\n  \u003Cv:f eqn=\u0022sum @10 21600 0\u0022\/\u003E\u003Cbr \/\u003E\r\n \u003C\/v:formulas\u003E\u003Cbr \/\u003E\r\n \u003Cv:path o:extrusionok=\u0022f\u0022 gradientshapeok=\u0022t\u0022 o:connecttype=\u0022rect\u0022\/\u003E\u003Cbr \/\u003E\r\n \u003Co:lock v:ext=\u0022edit\u0022 aspectratio=\u0022t\u0022\/\u003E\u003Cbr \/\u003E\r\n\u003C\/v:shapetype\u003E\u003Cv:shape id=\u0022Picture_x0020_1\u0022 o:spid=\u0022_x0000_i1025\u0022 type=\u0022#_x0000_t75\u0022\u003Cbr \/\u003E\r\n alt=\u0022Image\u0022 style='width:468pt;height:265.2pt;visibility:visible;\u003Cbr \/\u003E\r\n mso-wrap-style:square'\u003E\u003Cbr \/\u003E\r\n \u003Cv:imagedata src=\u0022file:\/\/\/C:\/Users\/kwallace\/AppData\/Local\/Temp\/1\/msohtmlclip1\/01\/clip_image001.png\u0022\u003Cbr \/\u003E\r\n  o:title=\u0022Image\u0022\/\u003E\u003Cbr \/\u003E\r\n\u003C\/v:shape\u003E\u003C![endif]--\u003E\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAt least nine historical eruptions have been documented at Bogoslof volcano. The most recent occurred from December 2016 to August 2017 and produced seventy main explosive events that generated volcanic ash clouds that rose as high as 42,500 ft (13 km) above sea level, and greatly modified the topography of Bogoslof Island.  Previous eruptions of the volcano have lasted weeks to months and have on occasion produced ash fall on the community of Unalaska. Eruptions of the volcano are often characterized by multiple explosive ash-producing events as well as the growth of lava domes.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBogoslof Island is the largest of a cluster of small, low-lying islands making up the summit of a large submarine stratovolcano. The highest point above sea level is about 490 ft (150 m); however, the volcano is frequently altered by both eruptions and wave erosion and has undergone dramatic changes in historical time. The two main islands currently above sea level are Fire Island and Bogoslof Island, both located about 61 miles (98 km) northwest of Unalaska\/Dutch Harbor, 76 miles (123 km) northeast of Nikolski, and 93 miles (149 km) northeast of Akutan. The volcano is situated slightly north (behind) the main Aleutian volcanic front. Bogoslof volcano is within the U.S. Fish and Wildlife Service Alaska Maritime National Wildlife Refuge and is habitat for marine mammals and seabirds (https:\/\/www.fws.gov\/refuge\/alaska_maritime\/).\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Loewen, Acting Scientist-in-Charge, USGS mloewen@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"No significant ongoing earthquake activity; alert level returned to UNASSIGNED\/UNASSIGNED.","sentUtc":"2023-11-24","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2023-11-22T16:12:18-09:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-11-22T16:12:18-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-11-22T16:12:18-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20231103\/1631Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1578\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003ELow-level ash emissions at Shishaldin Volcano are no longer visible in satellite data and seismicity and infrasound data show a decline in activity.  The Aviation Color Code and Alert Level remain at ORANGE\/WATCH. AVO is monitoring the volcano closely and will issue additional Volcanic Activity Notices about significant changes in activity as they occur.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network. In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone observed\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Ash emissions have ended or paused. ","sentUtc":"2023-11-03","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-11-02T22:10:08-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-11-02T22:10:08-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-11-02T22:10:08-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20231103\/0545Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1577\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EAn explosive eruption of Shishaldin Volcano began around 03:40 UTC on November 3 (19:40 AKDT on November 2). Ash was first observed in satellite data at 04:00 UTC (20:00 AKDT) at an altitude of 20,000 ft above sea level. This is a decrease in the cloud height from the initial estimate and the National Weather Service has modified their SIGMET because of the refined analysis of the cloud altitude. Seismic, infrasound and satellite data show the eruption continues at a constant level. The Aviation Color Code and Alert Level remain at ORANGE\/WATCH. AVO is monitoring the volcano closely and will issue additional Volcanic Activity Notices about significant changes in activity as they occur.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network. In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E20,000 ft\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Emoving towards the west\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Eruption continues with an ash cloud to 20,000 ft above sea level.","sentUtc":"2023-11-03","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-11-02T21:07:03-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-11-02T21:07:03-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-11-02T21:07:03-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20231103\/0431Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1575\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe level of unrest has increased at Shishaldin Volcano. An increase in tremor has been observed in seismic and infrasound data beginning at around 7:00 pm AKDT (3:00 UTC 11\/3). These signals indicate that the volcano is likely erupting. No ash cloud has been observed in satellite data.  Due to the increase in activity, the Aviation Color Code and Volcano Alert Level for Shishaldin Volcano are being raised to ORANGE\/WATCH.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network. In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENA\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Level of unrest has increased. Tremor is obsverved in satellite and infrasound data. Shishaldin taken to Orange\/Watch.","sentUtc":"2023-11-03","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-11-02T20:10:17-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-11-02T20:10:17-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-11-02T20:10:17-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20231031\/2051Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1562\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EVolcanic activity at Shishaldin Volcano has decreased over the past few weeks. While current seismicity consisting of low-level tremor and small low frequency earthquakes continues above background levels, there have been no large ash-producing explosions at the volcano since October 3, 2023. Recent satellite observations also show a decrease in surface temperatures and a decline in sulfur dioxide emissions. Due to this decrease in activity, the Alaska Volcano Observatory is lowering the Aviation Color Code for Shishaldin Volcano to YELLOW and the Alert Level to ADVISORY.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe recent episode of activity at Shishaldin began on July 11, 2023 with the observation of strongly elevated surface temperatures at the summit in satellite data and increasing seismic activity. A significant explosion was observed on July 14 2023 that produced an ash cloud to over 30,000 ft. Eleven more significant explosions followed over the next 3 months with the last explosive eruption occurring on Oct. 3, 2023. Additional ash-producing explosive eruptions are possible and would likely be preceded by increases in seismic tremor and elevated surface temperatures. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network. In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENA\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Due to decreasing seismicity and surface temperatures over the past few weeks - Shishaldin taken to Yellow\/Advisory","sentUtc":"2023-10-31","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-10-30T14:29:52-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-10-30T14:29:52-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-10-30T14:29:52-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20231030\/2214Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAniakchak (VNUM #312090)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EGREEN\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1557\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 56 deg 54 min W 158 deg 12 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Peninsula\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4400 ft (1341 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe Alaska Volcano Observatory (AVO) has experienced the failure of seismic monitoring equipment at Aniakchak Volcano and the remaining instrumentation is insufficient to establish that the volcano is at a typical background level. It is not possible to repair this equipment until next summer's field season. As a result, AVO is unable to (1) assess whether this volcano may be building towards an eruption and (2) quickly confirm or dismiss reports of activity.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBecause this volcano is no longer seismically monitored at adequate levels, the Aviation Color Code and Volcano Alert Level are changed to UNASSIGNED\/UNASSIGNED.  As at other volcanoes without real-time seismic networks, AVO will continue to use satellite data, regional seismic, infrasound and lightning networks, and reports from pilots and ground observers to detect signs of eruptive activity.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAniakchak volcano, located in the central portion of the Alaska Peninsula, consists of a stratovolcano edifice with a 10 km (6 mile) diameter summit caldera. The caldera-forming eruption occurred around 3,500 years ago. Postcaldera eruptions have produced lava domes, tuff cones, and larger spatter and scoria cone structures including Half-Cone and Vent Mountain all within the caldera. The most recent eruption occurred in 1931 and created a new vent and lava flows on the western caldera floor while spreading ash over much of southwestern Alaska. Aniakchak volcano is 25 km (15 miles) southeast of the nearest community, Port Heiden, and 670 km (416 miles) southwest of Anchorage, Alaska. \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/gcc02.safelinks.protection.outlook.com\/?url=http%3A%2F%2Fwww.avo.alaska.edu%2F&data=05%7C01%7Chdietterich%40usgs.gov%7C4e428a02cf274911103408db150551b8%7C0693b5ba4b184d7b9341f32f400a5494%7C0%7C0%7C638126884815330179%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=mrKsTvh8yVAs%2FbGq6tQapOq6Q773zJjI9UTvyFMD7YE%3D&reserved=0\u0022\u003Ehttp:\/\/www.avo.alaska.edu\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Aviation Color Code and Volcano Alert Level decreased to UNASSIGNED\/UNASSIGNED due to failure of monitoring equipment.","sentUtc":"2023-10-30","obs":"avo","vName":"Aniakchak","vnum":"312090","noticeId":"DOI-USGS-AVO-2023-10-30T11:47:57-08:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-10-30T11:47:57-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-10-30T11:47:57-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20231024\/2255Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EBogoslof (VNUM #311300)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUNASSIGNED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1535\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E492 ft (150 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EOver the past three days, over 90 earthquakes have been detected in the vicinity of Bogoslof volcano. This marks a change in behavior and the Aviation Color Code and Volcano Alert Level is being increased to YELLOW\/ADVISORY. Increases in seismic activity typically precede eruptions, but many volcanoes have exhibited similar behavior that did not result in eruptions. There have been no other signs of unrest observed in satellite data over the past several days.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBogoslof volcano is monitored using a single local seismic station, distant seismic and infrasound instruments, satellite data and lightning detection.  At least nine historical eruptions have been documented at Bogoslof volcano. The most recent occurred from December 2016 to August 2017 and produced seventy main explosive events that generated volcanic ash clouds that rose as high as 13 km (42,500 ft) above sea level, and that greatly modified the topography of Bogoslof Island.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBogoslof volcano is located about 98 km (61 mi) northwest of Unalaska\/Dutch Harbor, 123 km (76 mi) northeast of Nikolski, and 149 km (93 mi) northeast of Akutan. It is within the U.S. Fish and Wildlife Service Alaska Maritime National Wildlife Refuge and is habitat for marine mammals and seabirds (https:\/\/www.fws.gov\/refuge\/alaska_maritime\/).\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS cwaythomas@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EJessica Larsen, Acting Coordinating Scientist, UAFGI jflarsen\u003Ca target=\u0022_blank\u0022 href=\u0022mailto:dfee1@alaska.edu\u0022\u003E@alaska.edu\u003C\/a\u003E (907) 378-5460 \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Bogoslof alert level increased from UNASSIGNED\/UNASSIGNED to YELLOW\/ADVISORY. ","sentUtc":"2023-10-24","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2023-10-24T13:43:24-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-10-24T13:43:24-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-10-24T13:43:24-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20231015\/2043Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1505\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EClear web camera views of Shishaldin from yesterday and today show a robust vapor cloud at the volcano's summit. This vapor plume likely consists primarily of steam and other volcanic gases. The vapor cloud does not indicate that an eruption is in progress and probably reflects the interaction of hot material and snow and ice. The Aviation Color Code remains at ORANGE and the Volcano Alert Level at WATCH. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E10,000 to 20,000 feet above sea level\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Robust steam emissions at summit.","sentUtc":"2023-10-15","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-10-15T12:17:15-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-10-15T12:17:15-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-10-15T12:17:15-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20231013\/1844Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EWrangell (VNUM #315020)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EGREEN\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1495\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 62 deg  W 144 deg 1 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EWrangell Volcanic Field\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E14163 ft (4317 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EDue to a station outage, the Alaska Volcano Observatory (AVO) has lost the capability to monitor Mount Wrangell volcano seismically and cannot reliably detect changes in unrest at the volcano. AVO is moving the Volcano Alert Level and Aviation Color Code of Mount Wrangell to UNASSIGNED. As at other Alaska volcanoes, AVO will continue using satellite, regional infrasound, lightning data, and reports from pilots and ground observers to detect signs of eruptive activity should they occur.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMt. Wrangell is a 4317 m (14,163 ft) high, andesitic, shield volcano with an ice-filled summit caldera, located in the Wrangell-St. Elias National Park and Preserve. Mt. Wrangell has three small post-caldera craters, named North Crater, East Crater, and Mt. Zanetti. These craters are all geothermally active, and there are frequent historical reports of steam from Mt. Wrangell. There are also several questionable reports of historical eruptive activity. Mt. Wrangell is 330 km (206 mi) northeast of Anchorage.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003Ehttp:\/\/www.avo.alaska.edu\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"The seismic network on Mount Wrangell volcano is no longer functioning.","sentUtc":"2023-10-13","obs":"avo","vName":"Wrangell","vnum":"315020","noticeId":"DOI-USGS-AVO-2023-10-13T10:21:13-08:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-10-13T10:21:13-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-10-13T10:21:13-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20231005\/2350Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ERuby (VNUM #284202)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EU.S. Geological Survey\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/N196\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 15 deg 37 min E 145 deg 34 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENorthern Mariana Islands\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E-755 ft (-230 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003ENo sign of new volcanic activity has been detected at Ruby Seamount since September 14 and 15. Since there is no indication of ongoing activity, the Aviation Color Code and Volcano Alert Level are being lowered back to UNASSIGNED, reflecting the lack of nearby monitoring instruments that could detect lower-level events. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EIt is possible that further eruptive activity could occur at Ruby. The volcano is monitored by a regional geophysical monitoring network, including a station at Saipan (50 km away) as well as others in Guam, Japan, and an array of underwater pressure sensors at Wake Island. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERuby is a submarine volcano that rises to within 230 m of the sea surface near the southern end of the Mariana arc northwest of the island of Saipan. The volcano was first detected in eruption in 1966 by sonar signals. In 1995, submarine explosions were heard, accompanied by a fish kill, sulfurous odors, bubbling water, and the detection of volcanic tremor. \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone observed\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone observed\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ECNMI Homeland Security and Emergency Management\u003Cbr \/\u003Ehttp:\/\/www.cnmihsem.gov.mp\/\u003Cbr \/\u003E\u003Cbr \/\u003EUSGS Northern Mariana Duty Scientist (907) 786-7497\u003Cbr \/\u003Ehttp:\/\/volcano.wr.usgs.gov\/cnmistatus.php\u003Cbr \/\u003E\u003Cbr \/\u003ESatellite information, Washington VAAC\u003Cbr \/\u003Ehttp:\/\/www.ssd.noaa.gov\/VAAC\/washington.html\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"No observations of new eruptions since September 15, color code and alert level returned to UNASSIGNED","sentUtc":"2023-10-05","obs":"nmi","vName":"Ruby","vnum":"284202","noticeId":"DOI-USGS-NMI-2023-10-05T16:22:49-07:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2023-10-05T16:22:49-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2023-10-05T16:22:49-07:00","nvewsThreat":"Low Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20231003\/1836Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ERED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1463\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe explosive ash eruption of Shishaldin Volcano that started this morning at 5:50 AKDT (13:50 UTC) has ended. Clear webcam views show steaming at the volcano's summit. The Aviation Color Code is being lowered to ORANGE and the Volcano Alert Level to WATCH. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESeismic and infrasound activity are diminished but still slightly above background. Volcanic flows on the flanks of the volcano may create lower-level ash emissions. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone observed; low-level ash may be produced from volcanic flows\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Explosive ash eruption that started at 5:50 AKDT (13:50 UTC) has ended. Aviation Color Code and Volcano Alert Level lowered to ORANGE\/WATCH. ","sentUtc":"2023-10-03","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-10-03T10:04:41-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-10-03T10:04:41-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-10-03T10:04:41-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20231003\/1731Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ERED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1462\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EAsh emissions from Shishaldin Volcano continue since starting this morning at 5:50 AKDT (13:50 UTC), but at a lower level of 20,000 to 25,000 ft asl after an initial height of ~40,000 ft asl. Seismicity and infrasound have diminished but are still above background. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe Aviation Color Code remains at RED and the Volcano Alert Level at WARNING. The National Weather Service has issued a SIGMET for this ash cloud, and a Special Weather Statement has been issued for possible ashfall on Unimak Island and the lower Alaska Peninsula, including False Pass, Cold Bay, and Sand Point. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBased on previous eruption cycles, significant ash emissions may continue for a few more hours. Pyroclastic and mudflows are likely on the immediate flanks of the volcano.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E25,000 ft asl\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Explosive ash eruption that started at 5:50 AKDT (13:50 UTC) continues, but at a lower level (appx. 20,000 ft asl). ","sentUtc":"2023-10-03","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-10-03T09:00:39-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-10-03T09:00:39-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-10-03T09:00:39-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20231003\/1412Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1461\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EAn ash cloud from Shishaldin Volcano reaching 40,000 ft (12 km) above sea level was observed in satellite data at 5:20 am AKDT (13:50 UTC). This follows a several-hour increase in observed eruptive activity, and a recent sharp increase in infrasound, seismicity, and lighting detections. In response, the Aviation Color Code is being raised to RED and the Volcano Alert Level is being raised to WARNING. The National Weather Service has issued a SIGMET for this ash cloud. Based on previous eruption cycles, significant ash emissions are likely to continue for several hours. Pyroclastic and mudflows are likely on the immediate flanks of the volcano.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBased on previous eruption cycles, significant ash emissions are likely to continue for several hours. Pyroclastic and mudflows are likely on the immediate flanks of the volcano.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EOver 40,000 ft (12 km) above sea level\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAsh plume is drifting south\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"An explosive eruption is underway with an ash cloud up to 40,000 ft (12 km) above sea level.","sentUtc":"2023-10-03","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-10-03T06:01:15-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-10-03T06:01:15-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-10-03T06:01:15-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20231003\/0743Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1459\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEruptive activity at Shishaldin has increased in the last 2 hours with lava fountaining observed. Starting at 9:00 pm AKDT (October 3 05:00 UTC) seismic activity at the volcano began to increase significantly. Around the same time, satellite images showed an increase in surface temperature consistent with lava fountaining, which was confirmed in clear web camera images. This fountaining has produced small hot avalanches of rock and lava down the slope of the volcano, and likely is producing minor ash clouds downwind of the volcano but these have not been large enough to detect in satellite images.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBased on previous eruption cycles, more significant ash emissions are likely to occur, however, the time from initial activity to more significant explosions ranges from hours to over a day.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERecent significant ash events during the current eruption resulted in ash clouds with heights up to 40,000 ft (12 km) above sea level.  These events can occur with little warning. It is also possible that ash emissions may occur at a lower-level, steady state and be sustained for many hours. AVO is monitoring the volcano closely and will issue additional Volcanic Activity Notice’s to provide notice of significant changes in activity as they occur.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Lava fountaining and seismicity increased, larger ash event possible.","sentUtc":"2023-10-03","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-10-02T23:14:06-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-10-02T23:14:06-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-10-02T23:14:06-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230925\/2049Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1432\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003ECORRECTION:  The ash cloud from this morning’s eruption detached from the volcano around 07:00 AKDT (15:00 UTC) and is drifting east-southeast at an altitude of 38,000 ft above sea level. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EActivity at Shishaldin Volcano has declined significantly. Seismicity decreased rapidly around 06:00 AKDT (14:00 UTC) and no significant ash emissions from the volcano are being observed in satellite data at this time. In response, AVO is lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe ash cloud from this morning’s eruption detached from the volcano around 07:00 AKDT (15:00 UTC) and is drifting east-southeast at an altitude of 38,000 ft above sea level.  Ash emissions continued at a lower altitude of about 20,000–25,000 ft above sea level until about 08:20 AKDT (16:20 UTC). Small explosions are currently being detected in infrasound data and likely represent low-level eruptive activity near the vent area.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ETrace to minor amounts of ashfall were reported by the communities of False Pass, King Cove, Cold Bay and Sand Point.  Ashfall occurred during rainfall in all four communities. No ashfall is expected from the current small explosions that are being detected in infrasound. Refer to the National Weather Service SIGMET for the drifting ash cloud (https:\/\/www.weather.gov\/aawu\/sigmets) and the Ashfall Advisory and Special Weather Statement for trace to minor amounts of ashfall on communities on the lower Alaska Peninsula and surrounding waters (https:\/\/www.weather.gov\/afc\/).\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBased on previous eruption cycles, pyroclastic flows and mudflows are likely on the immediate flanks of the volcano.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9,500 ft above sea level\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EDrifting cloud from the main explosion moving east-southeast of the volcano\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Seismicity and ash emissions have declined significantly. Color Code reduced to ORANGE and Alert Level to WATCH.","sentUtc":"2023-09-25","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-09-25T12:47:47-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-09-25T12:47:47-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-09-25T12:47:47-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230925\/2034Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ERED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1431\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EActivity at Shishaldin Volcano has declined significantly. Seismicity decreased rapidly around 06:00 AKDT (14:00 UTC) and no significant ash emissions from the volcano are being observed in satellite data at this time. In response, AVO is lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe ash cloud from this morning’s eruption detached from the volcano around 07:00 AKDT (15:00 UTC) and is drifting east-southeast at an altitude of 45,000 ft above sea level.  Ash emissions continued at a lower altitude of about 20,000–25,000 ft above sea level until about 08:20 AKDT (16:20 UTC). Small explosions are currently being detected in infrasound data and likely represent low-level eruptive activity near the vent area.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ETrace to minor amounts of ashfall were reported by the communities of False Pass, King Cove, Cold Bay and Sand Point.  Ashfall occurred during rainfall in all four communities. No ashfall is expected from the current small explosions that are being detected in infrasound. Refer to the National Weather Service SIGMET for the drifting ash cloud (https:\/\/www.weather.gov\/aawu\/sigmets) and the Ashfall Advisory and Special Weather Statement for trace to minor amounts of ashfall on communities on the lower Alaska Peninsula and surrounding waters (https:\/\/www.weather.gov\/afc\/).\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBased on previous eruption cycles, pyroclastic flows and mudflows are likely on the immediate flanks of the volcano.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9,500 ft above sea level\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EDrifting cloud from the main explosion moving east-southeast of the volcano\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Seismicity and ash emissions have declined significantly. Color Code reduced to ORANGE and Alert Level to WATCH.","sentUtc":"2023-09-25","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-09-25T11:25:07-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-09-25T11:25:07-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-09-25T11:25:07-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230925\/1509Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ERED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1430\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EAn ash cloud from Shishaldin Volcano initially reached 45,000 ft (14 km) above sea level starting at 05:42 am AKDT (13:42 UTC). Ash emissions continue but the height is decreasing. Seismic activity dropped sharply along with the start of ash emissions and now is at low levels. The Aviation Color Code remains at RED and the Volcano Alert Level at WARNING. The National Weather Service has issued a SIGMET for this ash cloud, an Ash Advisory has been issued for False Pass, and a Special Weather Statement has been issued for possible trace ash on Cold Bay, King Cove, and Sand Point.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBased on previous eruption cycles, significant ash emissions are likely to continue for several hours. Pyroclastic flows and mudflows are likely on the immediate flanks of the volcano.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E45,000 ft. above sea level\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Emoving east\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"An explosive eruption is underway with an ash cloud reaching 45,000 ft (14 km) above sea level.","sentUtc":"2023-09-25","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-09-25T07:06:12-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-09-25T07:06:12-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-09-25T07:06:12-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230925\/1402Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1427\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EAn ash cloud from Shishaldin Volcano initially reached 45,000 ft (14 km) above sea level starting at 05:42 am AKDT (13:42 UTC). Ash emissions continue but the height is decreasing. Seismic activity dropped sharply along with the start of ash emissions and now is at low levels. The Aviation Color Code remains at RED and the Volcano Alert Level at WARNING. The National Weather Service has issued a SIGMET for this ash cloud, an Ash Advisory has been issued for False Pass, and a Special Weather Statement has been issued for possible trace ash on Cold Bay, King Cove, and Sand Point.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBased on previous eruption cycles, significant ash emissions are likely to continue for several hours. Pyroclastic flows and mudflows are likely on the immediate flanks of the volcano.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E45,000 ft. above sea level\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Emoving east\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"An explosive eruption is underway with an ash cloud reaching 45,000 ft (14 km) above sea level.","sentUtc":"2023-09-25","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-09-24T20:21:40-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-09-24T20:21:40-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-09-24T20:21:40-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230925\/1325Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1428\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe level of activity at Shishaldin remains high, with increasing seismicity and evidence for lava eruption and volcanic flows. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EElevated surface temperatures consistent with lava fountaining over the crater rim have been observed during clear conditions overnight. Low-level ash emissions less than 15,000 ft. (4.5 km) above sea level were observed starting at 6 pm AKDT yesterday (02:00 UTC September 25), but these dissipated quickly. Beginning at 12 am AKDT today (08:00 UTC), a series of seismic signals consistent with volcanic flows were recorded on the north side of the volcano. Meteorologic clouds up to 20,000 ft. (6 km) above sea level have obscured view of the volcano since this time, and no ash emissions above this level have been observed.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe current period of heightened seismicity at Shishaldin, which started yesterday morning, has lasted longer than previous events during the 2023 eruption. It remains possible that higher ash emissions will occur along with this increased activity.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPrevious recent significant ash events resulted in ash clouds with heights up to 40,000 ft (12 km) above sea level.  These events can occur with little warning. It is also possible that ash emissions may occur at a lower level and be sustained for many hours. AVO is monitoring the volcano closely and will issue additional Volcanic Activity Notices about significant changes in activity as they occur.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENot observed currently\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAny ash emissions remain below 20,000 ft. asl\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Seismicity continues to rise; high ash emissions not observed but could occur anytime","sentUtc":"2023-09-25","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-09-25T04:38:24-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-09-25T04:38:24-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-09-25T04:38:24-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230925\/0215Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1426\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe level of activity has increased at Shishaldin Volcano. After a prolonged low-level eruption over the past day, a strong increase in seismic tremor over the past hour and continued high temperatures at the volcano observed in satellite data over the past 18 hours suggests that stronger explosive activity is likely imminent. Elevated surface temperatures consistent with lava erupting at the summit are evident in the latest satellite data, but no significant ash emissions have been observed. Based on previous eruption cycles, ash emissions are likely to occur and may increase in the next several hours. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERecent significant ash events during the current eruption resulted in ash clouds with heights up to 40,000 ft (12 km) above sea level.  These events can occur with little warning. It is also possible that ash emissions may occur at a lower-level, steady state and be sustained for many hours. AVO is monitoring the volcano closely and will issue additional Volcanic Activity Notice’s to provide notice of significant changes in activity as they occur.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Seismicity is intensifying and an explosive eruption is likely in the next several hours","sentUtc":"2023-09-25","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-09-24T18:00:32-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-09-24T18:00:32-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-09-24T18:00:32-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230924\/1700Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1422\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EGeophysical and remote sensing data indicate that low-level eruption at Shishaldin Volcano continues but remains confined to the summit crater. Strongly elevated surface temperatures and some small-amplitude infrasound detections are occuring. Seismic tremor remains high but has started to slowly decline over the past eight hours. No ash emissions or deposits outside the crater have been observed in satellite or web camera imagery. Based on previous eruptive episodes, it remains possible that this activity may culminate in more significant lava fountaining and ash emissions. AVO is monitoring the volcano closely and will issue additional Volcanic Activity Notice’s to provide notice of significant changes in activity as they occur.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERecent significant ash events during the current eruption resulted in ash clouds with heights up to 40,000 ft (12 km) above sea level. These events can occur with little warning. It is also possible that ash emissions may occur at a lower-level, steady state and be sustained for many hours. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network. In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Low-level eruption continues. Seismicity at high levels, but declining. More significant eruptive activity remains possible.","sentUtc":"2023-09-24","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-09-24T07:53:38-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-09-24T07:53:38-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-09-24T07:53:38-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230924\/0825Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1421\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003ESeismic tremor remains high at Shishaldin Volcano and nearly continuous small infrasound signals are being detected suggesting that low-level eruptive activity is likely occurring with the summit crater. Based on previous eruptive episodes, this activity may culminate in more significant lava fountaining and ash emissions within hours. However, no strongly elevated temperatures indicative of lava at the surface or ash emissions have accompanied the elevated geophysical data thus far. The volcano is mostly obscured by clouds between 10,000 and 15,000 ft above sea level, which preclude observations of possible low-level activity. AVO is monitoring the volcano closely and will issue additional Volcanic Activity Notice’s to provide notice of significant changes in activity as they occur.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERecent significant ash events during the current eruption resulted in ash clouds with heights up to 40,000 ft (12 km) above sea level. These events can occur with little warning. It is also possible that ash emissions may occur at a lower-level, steady state and be sustained for many hours. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network. In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Seismicity continues a high levels and a low-level eruption is likely underway. Likelihood of more significant eruptive activity remains high.","sentUtc":"2023-09-24","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-09-23T23:48:23-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-09-23T23:48:23-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-09-23T23:48:23-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230924\/0211Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1420\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003ESeismic tremor has continued to increase over the day at Shishaldin Volcano and geophysical signals suggest low-level eruptive activity is likely occurring with the summit crater. Based on previous episodes of activity, this activity may culminate in more significant lava fountaining and ash emissions within hours. However, no strongly elevated temperatures indicative of lava at the surface or ash emissions have accompanied the elevated seismicity thus far. The volcano is mostly obscured by clouds between 2,000 and 15,000 ft above sea level, which preclude observations of possible low-level activity. However, regional infrasound sensors have detected some signals from the direction of Shishaldin that suggest minor eruptive activity within the summit crater may been occurring. If geophysical or remote sensing signals intensify or a significant eruption begins, the Alaska Volcano Observatory will issue further notices of volcanic activity. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERecent significant ash events during the current eruption resulted in ash clouds with heights up to 40,000 ft (12 km) above sea level. These events can occur with little warning. It is also possible that ash emissions may occur at a lower-level, steady state and be sustained for many hours. AVO is monitoring the volcano closely and will issue additional Volcanic Activity Notice’s to provide notice of significant changes in activity as they occur.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network. In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Seismicity continues to increase and a low-level eruption is likely underway. Likelihood of more significant eruptive activity remains high.","sentUtc":"2023-09-24","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-09-23T17:14:58-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-09-23T17:14:58-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-09-23T17:14:58-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230923\/2028Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1415\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe level of unrest has increased at Shishaldin Volcano. Seismic tremor has increased significantly over the past 36 hours. No strongly elevated temperatures indicative of lava at the surface or ash emissions have accompanied the elevated seismicity at this time, although the volcano is obscured by clouds. Based on previous episodes of activity, eruptive activity in the form of lava fountaining and ash emissions is possible within hours. If geophysical or remote sensing signals intensify, the Alaska Volcano Observatory will issue further notices of volcanic activity. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERecent significant ash events during the current eruption resulted in ash clouds with heights up to 40,000 ft (12 km) above sea level. These events can occur with little warning. It is also possible that ash emissions may occur at a lower-level, steady state and be sustained for many hours. AVO is monitoring the volcano closely and will issue additional Volcanic Activity Notice’s to provide notice of significant changes in activity as they occur.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network. In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Seismicity is elevated and increasing, and an eruption is possible in the coming hours","sentUtc":"2023-09-23","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-09-23T07:37:50-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-09-23T07:37:50-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-09-23T07:37:50-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230919\/0306Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ERuby (VNUM #284202)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EU.S. Geological Survey\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/N180\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 15 deg 37 min E 145 deg 34 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENorthern Mariana Islands\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E-755 ft (-230 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EAnalysis of seismoacoustic signals and observations of a submarine plume in satellite imagery are consistent with an eruption at Ruby seamount beginning the morning of September 15 ChST. Satellite imagery shows a submarine plume of discolored water by sunrise at ~20:50 UTC on September 14 (06:50 ChST September 15). This plume does not breach the ocean surface. Onset of the eruption prior to the plume detection is not observed in geophysical data. Retrospective analysis of seismoacoustic data from a geophysical monitoring station on Saipan, 50 km to the southeast of the volcano, capture eruption signals beginning at 14:27 ChST on September 15 (04:27 UTC). The activity was also picked up on other regional geophysical monitoring networks in the Pacific. The plume is detached in satellite imagery by the morning of September 16 and no activity has since been observed on geophysical networks. Due to this activity at Ruby, the Aviation Color Code and Volcano Alert Level are being raised to YELLOW\/ADVISORY.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EIt is possible that further eruptive activity could occur at Ruby. The volcano is monitored by a regional geophysical monitoring network, including a station at Saipan (50 km away) as well as others in Guam, Japan, and an underwater pressure sensor at Wake Island. Analysis of the geophsyical data was done in collaboration with the Laboratoire de Geophysique in Tahiti.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERuby is a submarine volcano that rises to within 230 m of the sea surface near the southern end of the Mariana arc northwest of the island of Saipan. The volcano was first detected in eruption in 1966 by sonar signals. In 1995, submarine explosions were heard, accompanied by a fish kill, sulfurous odors, bubbling water, and the detection of volcanic tremor.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E0 ft, submarine\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ECNMI Homeland Security and Emergency Management\u003Cbr \/\u003Ehttp:\/\/www.cnmihsem.gov.mp\/\u003Cbr \/\u003E\u003Cbr \/\u003EUSGS Northern Mariana Duty Scientist (907) 786-7497\u003Cbr \/\u003Ehttp:\/\/volcano.wr.usgs.gov\/cnmistatus.php\u003Cbr \/\u003E\u003Cbr \/\u003ESatellite information, Washington VAAC\u003Cbr \/\u003Ehttp:\/\/www.ssd.noaa.gov\/VAAC\/washington.html\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Geophysical signals and a submarine plume in satellite imagery consistent with an eruption beginning on September 15","sentUtc":"2023-09-19","obs":"nmi","vName":"Ruby","vnum":"284202","noticeId":"DOI-USGS-NMI-2023-09-18T19:07:17-07:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2023-09-18T19:07:17-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2023-09-18T19:07:17-07:00","nvewsThreat":"Low Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230917\/1902Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/H317\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe eruption that began at K\u012blauea summit on September 10 has ended. Lava supply to the vents on the downdropped block in K\u012blauea 's summit caldera ceased yesterday, September 16, based upon visual and geophysical observations. Sulfur dioxide (SO2) emissions have decreased to near pre-eruption background levels.   \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAccordingly, the USGS Hawaiian Volcano Observatory (HVO) is lowering the Volcano Alert Level for ground-based hazards from WATCH to ADVISORY and the Aviation Color Code from ORANGE to YELLOW.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDuring the morning of September 16, HVO field crews reported that active lava was no longer flowing onto Halema\u02bbuma\u02bbu crater floor and was restricted to a ponded area north of the vents on the downdropped block. They observed lava spattering at the vents cease at approximately 11:15 am yesterday, September 16, and webcam views show the ponded lava stagnant by around noon. Overnight webcam views showed incandescence across the eruption area as lava erupted over the past week continues to cool. These observations are supported by geophysical data which shows that eruptive tremor (a signal associated with fluid movement) in the summit region decreased over September 15 and 16 and returned to pre-eruption levels by 5 p.m. HST on September 16. Over that period, mild inflation has been recorded at summit tiltmeters. Sulfur dioxide (SO2) emissions have also decreased to near background levels, and were measured at a rate of 800 tonnes per day yesterday, September 16.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMore eruption information on the September 2023 K\u012blauea summit eruption is available at: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/recent-eruption\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/recent-eruption\u003C\/a\u003E. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThere remains the potential for eruptive activity to resume in the near future at or near the summit of K\u012blauea with little or no warning.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor K\u012blauea for signs of renewed activity. Should volcanic activity change significantly, a new Volcanic Activity Notice will be issued. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHazards are still present on K\u012blauea and are described below. Residents and visitors should stay informed and follow County of Hawai‘i and Hawai\u02bbi Volcanoes National Park guidelines. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor more information about the meaning of volcano alert levels and aviation color codes, see \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u0022\u003Ehttps:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u003C\/a\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ELevels of volcanic gas (sulfur dioxide and carbon dioxide) can remain locally hazardous even though K\u012blauea is no longer erupting. Sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E) gas emissions have greatly decreased; however, local concentrations of sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E) or hydrogen sulfide (H\u003Csub\u003E2\u003C\/sub\u003ES) may persist in downwind areas, and residents may notice odors of these gases occasionally. Significant hazards also remain around Halema\u02bbuma\u02bbu from crater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPlease\u202fsee the\u202fHawai\u02bbi\u202fVolcanoes National Park website for visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E.\u202f\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E.\u003Cbr \/\u003E\u003Cbr \/\u003EPlease see the\u202fHawai\u02bbi\u202fVolcanoes National Park website for visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E.\u202fVisitors to Hawai\u02bbi Volcanoes National Park should note that under southerly (non-trade) wind conditions, there is potential for a dusting of powdery to gritty ash composed of volcanic glass and rock fragments. These ashfalls represent a minor hazard, but visitors should be aware that such dustings at areas around the\u202fK\u012blauea\u202fsummit are possible.\u202f\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea updates will now be issued weekly on Tuesdays. Should volcanic activity change significantly, a new VAN will be issued. Regularly scheduled updates are posted on the HVO website at \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea\u202fhazards discussion:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E\u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003E \u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"K\u012blauea summit eruption has ended; status downgrade to YELLOW\/ADVISORY.","sentUtc":"2023-09-17","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2023-09-17T11:22:51-07:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2023-09-17T11:22:51-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2023-09-17T11:22:51-07:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230916\/0844Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ERED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1393\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EActivity at Shishaldin Volcano has declined. Seismicity decreased rapidly around 6:30 pm AKDT Sept. 15  (4:30 UTC, Sept. 16) yet remained elevated until 9:00 p.m. AKDT.  During this period of waning seismicity, volcanic lightning continued to be detected, indicating continued ash production.  The last detection of volcanic lighting was at 8:48 p.m. AKDT and seismicity has returned to pre-eruptive levels, indicating that significant ash emissions have ended. Thus, the Aviation Color Code and Volcano Alert Level are being decreased to ORANGE\/WATCH.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ETrace ash fall was reported in the community of False Pass between 18:00 and 20:30 AKDT (0200 to 0430 UTC). The National Weather Service has issued a SIGMET for the drifting ash cloud, and a Special Weather Statement has been issued for trace ash on False Pass.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Seismicity has decreased and significant ash emissions has ended.","sentUtc":"2023-09-16","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-09-15T23:52:02-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-09-15T23:52:02-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-09-15T23:52:02-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230916\/0524Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ERED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1392\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe explosive eruption at Shishaldin Volcano continues, but has decreased in intensity. An explosive event began at 5:10 p.m. AKDT on September 15, 2023 (01:10 UTC on Sept 16) after a period of rapidly increasing seismicity. The explosive event produced an ash-rich cloud that the National Weather Service estimated reached an altitude of 42,000 ft  (12.8 km) above sea level and was accompanied by volcanic lightning.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis upper level cloud detached from the vent around 18:30 AKDT (0230 UTC) and is drifting towards the east. Seismicity began to decrease dramaticially at about this same time. Beginning around 19:30 AKDT (0330 UTC), lightning resumed indicating continued ash emssions. The meterological cloud deck over the volcano is currently at about 22,500 ft (6.8 km) above sea level and ash emissions are not visible in satellite data. Explosions continue to be detected in infrasound data, at a lower level than during the most energetic phase of this event. Seismicity is lower, it has not reached its pre-event levels and the Aviation Color Code and Volcano Alert Level remain at RED\/WARNING.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ETrace ash fall was reported in the community of False Pass between 18:00 and 20:30 AKDT (0200 to 0430 UTC). The National Weather Service has issued a SIGMET for the drifting ash cloud, and a Special Weather Statement has been issued for trace ash on False Pass.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBased on previous eruption cycles, significant ash emissions are likely to continue for several hours. Pyroclastic and mudflows are likely on the immediate flanks of the volcano.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ELess than 22,000 ft.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAsh emission likely based on infrasound, seismic and lightning data.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Eruption continuing with decreased intensity and ash production.","sentUtc":"2023-09-16","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-09-15T20:40:40-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-09-15T20:40:40-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-09-15T20:40:40-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230916\/0141Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1391\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EAn explosive eruption from Shishaldin began around 5:10 p.m. AKDT on September 15, 2023 (01:10 UTC on Sept 16) following a several-hour increase in seismicity.  Ash is currently being produced and is drifting to the east below the cloud deck of 27,000 ft above sea level. The Aviation Color Code and Volcano Alert Level is being raised to RED\/WARNING.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERecent significant ash events during the current eruption resulted in ash clouds with heights up to 40,000 ft (12 km) above sea level.  These events can occur with little warning. It is also possible that ash emissions may occur at a lower-level, steady state and be sustained for many hours. AVO is monitoring the volcano closely and will issue additional Volcanic Activity Notice’s to provide notice of significant changes in activity as they occur.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Eruption underway with ash production.  Color code raised to RED\/WARNING.","sentUtc":"2023-09-16","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-09-15T17:30:44-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-09-15T17:30:44-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-09-15T17:30:44-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230915\/2252Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1390\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe level of unrest is increasing at Shishaldin Volcano. Seismic tremor has intensified over the past 6 hours and, during Shishaldin's ongoing eruptive period, this has often been followed by ash-producing explosive activity over the next several hours. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERecent significant ash events during the current eruption resulted in ash clouds with heights up to 40,000 ft (12 km) above sea level.  These events can occur with little warning. It is also possible that ash emissions may occur at a lower-level, steady state and be sustained for many hours. AVO is monitoring the volcano closely and will issue additional Volcanic Activity Notice’s to provide notice of significant changes in activity as they occur.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Seismicity is intensifying, increasing the likelihood an eruption.","sentUtc":"2023-09-15","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-09-15T13:51:34-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-09-15T13:51:34-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-09-15T13:51:34-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230914\/1934Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1386\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EFollowing the eruptive activity at Shishaldin Volcano overnight, the level of unrest has reduced significantly. Seismicity declined starting about 7:30 AKDT (15:30 UTC) and remains at low levels. No ash emissions were observed during the period of elevated seismicity overnight, but high clouds were present and could have obscured low-level ash emissions.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAVO is monitoring the volcano closely and will issue additional Volcanic Activity Notice’s to provide notice of significant changes in activity as they occur.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone observed\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enon observed\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Seismicity has reduced significantly.","sentUtc":"2023-09-14","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-09-14T11:05:58-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-09-14T11:05:58-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-09-14T11:05:58-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230914\/0958Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1382\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe level of unrest has slowly increased at Shishaldin Volcano. A steady increase in seismic tremor over the past 7 hours suggests that explosive activity is likely.  Cloud cover is currently obscuring satellite views of the volcano. Web camera views show incandescent lava at the summit. Based on previous eruption cycles, ash emissions are likely to occur over the next several hours. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERecent significant ash events during the current eruption resulted in ash clouds with heights up to 40,000 ft (12 km) above sea level.  These events can occur with little warning. It is also possible that ash emissions may occur at a lower-level, steady state and be sustained for many hours. AVO is monitoring the volcano closely and will issue additional Volcanic Activity Notice’s to provide notice of significant changes in activity as they occur.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Seismicity is increasing, and an explosive eruption is likely.","sentUtc":"2023-09-14","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-09-13T23:01:06-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-09-13T23:01:06-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-09-13T23:01:06-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230911\/1810Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ERED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/H310\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe eruption within K\u012blauea's summit caldera that began yesterday afternoon continues, with eruptive activity confined to the downdropped block and Halema\u02bbuma\u02bbu\u202fcrater. HVO\u202fis\u202flowering\u202fK\u012blauea’s\u202fvolcano alert level from WARNING to WATCH because the style of eruption and fissure location have stabilized, the initial extremely high effusion rates have declined, and no infrastructure is threatened.  Associated hazards are confined to the closed area established by Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO\u202fis\u202flowering\u202fK\u012blauea’s aviation color code from RED to ORANGE because there is currently no threat of significant volcanic ash emission into the atmosphere outside of the hazardous closed area within\u202fHawai‘i Volcanoes National Park. The eruption plume, composed largely of sulfur dioxide and minor volcanic particles, continues to rise to the base of the inversion level at about 8,000-10,000 feet (2,400-3,000 meters) above sea level.  The plume concentration has decreased some due to the drop in effusion rate, but still remains high.  Hazards associated with the eruption are limited and are described below. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea’s summit eruption is expected to continue and remain confined to K\u012blauea caldera within\u202fHawai‘i Volcanoes National Park.\u202f\u202fHVO does not see any indication of activity migrating elsewhere on K\u012blauea volcano and expects the eruption to remain confined to\u202fthe summit region. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO will continue to monitor this activity closely and report any significant changes in future notices.\u003Cbr \/\u003E\u003Cbr \/\u003EHVO is in constant communication with Hawai‘i Volcanoes National Park as this situation evolves. The activity is confined entirely within the park.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor more information about the meaning of volcano alert levels and aviation color codes, see \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u0022\u003Ehttps:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u003C\/a\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe eruption at\u202fK\u012blauea’s\u202fsummit is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas—primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)—are the primary hazard of concern, as this hazard can have far-reaching\u202feffects down-wind. As SO\u003Csub\u003E2\u003C\/sub\u003E is continuously released from the summit during the eruption, it will react in the atmosphere to create the visible haze known as\u202fvog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fVog\u202finformation can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E.\u202f\u003Cbr \/\u003E\u003Cbr \/\u003EAdditional hazards include Pele's hair and other lightweight volcanic glass fragments from the lava fountains that will fall downwind of the fissure vents and dust the ground within a few hundred meters (yards) of the vent\u202f(s). Strong winds may waft lighter particles to greater distances. Residents and visitors should minimize exposure to these volcanic particles, which can cause skin and eye irritation.\u202f\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u202f\u003Cbr \/\u003E\u003Cbr \/\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E.\u003Cbr \/\u003E\u003Cbr \/\u003EPlease see the\u202fHawai\u02bbi\u202fVolcanoes National Park website for visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E.\u202fVisitors to Hawai\u02bbi Volcanoes National Park should note that under southerly (non-trade) wind conditions, there is potential for a dusting of powdery to gritty ash composed of volcanic glass and rock fragments. These ashfalls represent a minor hazard, but visitors should be aware that such dustings at areas around the\u202fK\u012blauea\u202fsummit are possible.\u202f\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea updates will  issued daily. Should volcanic activity change significantly, a new VAN will be issued. Regularly scheduled updates are posted on the HVO website at \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea\u202fhazards discussion:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E\u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003E \u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"K\u012blauea eruption continues at the summit; status downgrade to ORANGE\/WATCH","sentUtc":"2023-09-11","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2023-09-11T09:31:32-07:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2023-09-11T09:31:32-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2023-09-11T09:31:32-07:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230911\/0118Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/H274\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea\u202fvolcano is erupting. At approximately 3:15 a.m.\/p.m. HST on September 10, 2023, the USGS Hawaiian Volcano Observatory observed eruptive activity in\u202fK\u012blauea\u202fsummit webcam images and from field reports indicating that an eruption has commenced within Halema\u02bbuma\u02bbu crater and on the down dropped block to the east in K\u012blauea’s\u202fsummit caldera, within Hawai‘i Volcanoes National Park.  The eruption was preceded by a period of strong seismicity and rapid uplift of the summit\u003Cbr \/\u003E\u003Cbr \/\u003EThe USGS Hawaiian Volcano Observatory is elevating\u202fK\u012blauea’s\u202fvolcano alert level from WATCH to WARNING and its aviation color code from ORANGE to RED as this eruption and associated hazards are evaluated.\u202f\u202f\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe opening phases of eruptions are dynamic. Webcam imagery shows fissures at the base of Halema\u02bbuma\u02bbu crater generating lava flows on the surface of the crater floor. The activity is confined to Halema\u02bbuma\u02bbu and the hazards will be reassessed as the eruption progresses.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO will continue to monitor this activity closely and report any significant changes in future notices.\u003Cbr \/\u003E\u003Cbr \/\u003EHVO is in constant communication with Hawai‘i Volcanoes National Park as this situation evolves. The activity is confined entirely within the park.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor more information about the meaning of volcano alert levels and aviation color codes, see \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u0022\u003Ehttps:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u003C\/a\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe eruption at\u202fK\u012blauea’s\u202fsummit is occurring within a closed area of Hawai'i Volcanoes National Park. High levels of volcanic gas—primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)—are the primary hazard of concern, as this hazard can have far-reaching\u202feffects down-wind. As SO\u003Csub\u003E2\u003C\/sub\u003E is continuously released from the summit during the eruption, it will react in the atmosphere to create the visible haze known as\u202fvog\u202f(volcanic smog) downwind of\u202fK\u012blauea.\u202fVog\u202finformation can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E.\u202f\u003Cbr \/\u003E\u003Cbr \/\u003EAdditional hazards include Pele's hair and other lightweight volcanic glass fragments from the lava fountains that will fall downwind of the fissure vents and dust the ground within a few hundred meters (yards) of the vent\u202f(s). Strong winds may waft lighter particles to greater distances. Residents and visitors should minimize exposure to these volcanic particles, which can cause skin and eye irritation.\u202f\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u202f\u003Cbr \/\u003E\u003Cbr \/\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E.\u003Cbr \/\u003E\u003Cbr \/\u003EPlease see the\u202fHawai\u02bbi\u202fVolcanoes National Park website for visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E.\u202fVisitors to Hawai\u02bbi Volcanoes National Park should note that under southerly (non-trade) wind conditions, there is potential for a dusting of powdery to gritty ash composed of volcanic glass and rock fragments. These ashfalls represent a minor hazard, but visitors should be aware that such dustings at areas around the\u202fK\u012blauea\u202fsummit are possible.\u202f\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea updates will  issued daily. Should volcanic activity change significantly, a new VAN will be issued. Regularly scheduled updates are posted on the HVO website at \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EHawai\u02bbi\u202fVolcanoes National Park visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-and-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea\u202fhazards discussion:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E\u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003E \u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"K\u012blauea is erupting; status upgrade to RED\/WARNING","sentUtc":"2023-09-11","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2023-08-15T16:25:12-07:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2023-08-15T16:25:12-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2023-08-15T16:25:12-07:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230911\/0052Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/H271\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea volcano is not erupting. Increased earthquake activity and changes in the patterns of ground deformation at K\u012blauea’s\u202fsummit began occurring the afternoon of September 10, 2023, indicating movement of magma in the subsurface.\u003Cbr \/\u003E\u003Cbr \/\u003EThe USGS Hawaiian Volcano Observatory is raising the volcano alert level\/aviation color code for K\u012blauea from ADVISORY\/YELLOW to WATCH\/ORANGE due to this activity.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAt this time, it is not possible to say with certainty if this activity will lead to an eruption; the activity may remain below ground. However, an eruption in K\u012blauea’s summit region, within Hawai‘i Volcanoes National Park and away from infrastructure, is one potential outcome. Based on patterns of earthquake activity and ground deformation, it is likely that any new eruptive activity will occur in or near Halema\u02bbuma\u02bbu crater, within the closed area of Hawai\u02bbi Volcanoes National Park. \u003Cbr \/\u003E\u003Cbr \/\u003EHVO will continue to monitor this activity closely and adjust the alert level accordingly.\u003Cbr \/\u003E\u003Cbr \/\u003EHVO is in constant communication with Hawai‘i Volcanoes National Park as this situation evolves. The activity is confined entirely within the park.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea summit eruptive activity over the past several years has occurred at the base of Halema\u02bbuma\u02bbu crater, within the closed area of Hawai\u02bbi Volcanoes National Park. During K\u012blauea summit eruptions, the high level of volcanic gas—primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)—being emitted is the primary hazard of concern, as this hazard can have far-reaching effects downwind. Passive volcanic degassing can occur from within Halema\u02bbuma\u02bbu crater even during periods of no eruptive activity. As SO\u003Csub\u003E2\u003C\/sub\u003E is released from the summit, it reacts in the atmosphere to create the visible haze known as vog (volcanic smog) that has been observed downwind of K\u012blauea. Vog creates the potential for airborne health hazards to residents and visitors, damages agricultural crops and other plants, and affects livestock.\u202fFor more information on gas hazards at the summit of\u202fK\u012blauea, please see:\u202f\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/pubs.er.usgs.gov\/publication\/fs20173017\u0022\u003Ehttps:\/\/pubs.er.usgs.gov\/publication\/fs20173017\u003C\/a\u003E. Vog\u202finformation can be found at\u202f\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/gcc02.safelinks.protection.outlook.com\/?url=https%3A%2F%2Fvog.ivhhn.org%2F&data=05%7C01%7Cjschmith%40usgs.gov%7C427d46609bdc4ead4ded08dadc775c75%7C0693b5ba4b184d7b9341f32f400a5494%7C0%7C0%7C638064702452595397%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=6W1jNCk%2BzJ1xjuSnsXCxWjeJPiLXhxNmQtAGtuPzryM%3D&reserved=0\u0022\u003Ehttps:\/\/vog.ivhhn.org\u003C\/a\u003E.\u202f \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera from Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fthe rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since early 2008.\u202f  \u003Cbr \/\u003E \u003Cbr \/\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E. \u003Cbr \/\u003E \u003Cbr \/\u003EThe Hawaiian Volcano Observatory (HVO) continues to closely monitor K\u012blauea Volcano. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPlease\u202fsee the\u202fHawai\u02bbi\u202fVolcanoes National Park website for visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E.\u202f\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea updates will continue to be issued daily. Should volcanic activity change significantly, a new VAN will be issued. Regularly scheduled updates are posted on the HVO website at \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003E \u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Increased unrest at K\u012blauea summit; status upgrade to ORANGE\/WATCH.","sentUtc":"2023-09-11","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2023-08-13T22:41:52-07:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2023-08-13T22:41:52-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2023-08-13T22:41:52-07:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230905\/2214Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ERED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1361\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EActivity at Shishaldin Volcano has declined. Web camera observations through 1:30 pm AKDT (21:30 UTC) show that significant ash emissions have ended. Seismicity decreased rapidly around 12:30 pm AKDT (20:30 UTC) and remains low. Thus, the Aviation Color Code and Volcano Alert Level are being decreased to ORANGE\/WATCH.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe National Weather Service has issued a SIGMET for the ash cloud (https:\/\/www.weather.gov\/aawu\/sigmets), and a Special Weather Statement and a Marine Weather Statement has been issued for possible trace ash fall on Unimak Island and on nearby marine waters, respectively.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E20,000 ft - 25,000 ft \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EEstimate based on winds and satellite obs.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Significant ash emissions have ended and seismcity has decreased.  ","sentUtc":"2023-09-05","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-09-05T13:50:49-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-09-05T13:50:49-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-09-05T13:50:49-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230905\/2046Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ERED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1360\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cem\u003E\u003Cstrong\u003ECorrection to previous VAN\/VONA issued at 12:31 PM AKDT\u003C\/strong\u003E\u003C\/em\u003E\u003Cem\u003E\u003Cstrong\u003E. \u003C\/strong\u003E\u003C\/em\u003E\u003Cem\u003E\u003Cstrong\u003EAlert Level remains at WARNING. \u003C\/strong\u003E\u003C\/em\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAn explosive eruption from Shishaldin began at ~08:30 AKDT (1630 UTC) following a several-hour increase in seismicity and produced an extensive ash cloud that moved towards the south-southeast at an estimated altitude of 32,000 ft (9.7 km) above sea level. Around 19:00 AKDT (1900 UTC) seismic amplitude decreased rapidly, and the altitude of the ash emissions as observed by satellite also decreased to an estimated altitude of ~15,000 ft (4.5 km). At 12:00 pm AKDT (2000 UTC), the lower-altitude ash cloud extended for ~75 miles (125 km) towards the east. The Aviation Color Code and Volcano Alert Level remains at RED\/WARNING.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe National Weather Service has issued a SIGMET for the ash cloud (https:\/\/www.weather.gov\/aawu\/sigmets), and a Special Weather Statement and a Marine Weather Statement has been issued for possible trace ash fall on Unimak Island and on nearby marine waters, respectively. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBased on previous eruption cycles, significant ash emissions are likely to continue for several hours. Pyroclastic and mudflows are likely on the immediate flanks of the volcano.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E15,000 ft\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EEstimate based on winds and satellite obs.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Correction to previous VAN\/VONA. Alert Level remains at WARNING. Ash emissions continue with a decrease in altitude to 15,000 ft.","sentUtc":"2023-09-05","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-09-05T12:41:31-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-09-05T12:41:31-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-09-05T12:41:31-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230905\/2031Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ERED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1358\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EAn explosive eruption from Shishaldin began at ~08:30 AKDT (1630 UTC) following a several-hour increase in seismicity and produced an extensive ash cloud that moved towards the south-southeast at an estimated altitude of 32,000 ft (9.7 km) above sea level. Around 19:00 AKDT (1900 UTC) seismic amplitude decreased rapidly, and the altitude of the ash emissions as observed by satellite also decreased to an estimated altitude of ~15,000 ft (4.5 km). At 12:00 pm AKDT (2000 UTC), the lower-altitude ash cloud extended for ~75 miles (125 km) towards the east. The Aviation Color Code and Volcano Alert Level remains at RED\/WARNING.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe National Weather Service has issued a SIGMET for the ash cloud (https:\/\/www.weather.gov\/aawu\/sigmets), and a Special Weather Statement and a Marine Weather Statement has been issued for possible trace ash fall on Unimak Island and on nearby marine waters, respectively. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBased on previous eruption cycles, significant ash emissions are likely to continue for several hours. Pyroclastic and mudflows are likely on the immediate flanks of the volcano.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E15,000 ft\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EEstimate based on winds and satellite obs.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Ash emissions continue with a decrease in altitude to 15,000 ft.","sentUtc":"2023-09-05","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-09-05T10:52:27-08:00","colorCode":"RED","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-09-05T10:52:27-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-09-05T10:52:27-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230905\/1701Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1356\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EAn ash cloud from Shishaldin Volcano reaching 25,000 ft (7.3 km) above sea level and rising was reported by a pilot at at 8:42 am AKDT (1642 UTC). Satellite data suggests that the cloud may be as high as 30,000 ft above sea level (9.1 km). This follows a several-hour increase in seismicity. In response, the Aviation Color Code is being raised to RED and the Volcano Alert Level is being raised to WARNING. The cloud is visible in satellite data moving towards the southeast and lightning associated with the ash cloud has been detected. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBased on previous eruption cycles, significant ash emissions are likely to continue for several hours. Pyroclastic and mudflows are likely on the immediate flanks of the volcano.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E30,000 ft\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EPIREP and satellite data\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Aviation Color Code and Alert Level Increased to RED\/WARNING. Explosive eruption is underway,. Ash cloud up to 24,000 ft msl.","sentUtc":"2023-09-05","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-09-05T08:46:53-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-09-05T08:46:53-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-09-05T08:46:53-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230826\/0831Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ERED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1320\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003ESatellite observations through 1200 am AKDT (0800 UTC) show that ash emissions have ended. Seismicity decreased rapidly around 5:30 pm AKDT (0130 UTC on 26 August) and remains low. Thus, the Avation Color Code and Volcano Alert Level are being decreased to ORANGE\/WATCH. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe National Weather Service is responsible for tracking the drifting ash cloud and SIGMETs have been issued today and will continue until the cloud disperses. See https:\/\/www.weather.gov\/aawu\/SIGMETs for current information for aviation.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESatellite data show ash emissions have ended.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Decrease in Aviation Color Code\/Alert Level to ORANGE\/WATCH. Ash emissions have ended. Seismicity at low levels.","sentUtc":"2023-08-26","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-08-25T20:54:46-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-08-25T20:54:46-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-08-25T20:54:46-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230826\/0420Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ERED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1319\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EExplosive eruptive activity is continuing at Shishaldin Volcano. An ash cloud continues to be observed in satellite data at an altitude of 21,000 ft (6.4 km) above sea level moving towards the northeast. This is a decrease in altitude from earlier today. Seismic tremor decreased rapidly around 5:30 pm AKDT (0130 UTC) and is approaching levels observed prior to the onset of ash emissions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBased on previous eruption cycles, it is likley that ash emissions are starting to decrease and may end over the next few hours. Pyroclastic and mudflows are likely on the immediate flanks of the volcano. Minor to trace amounts of ash fall are likely to the north of the volcano and in the water immediately offshore. No ash fall is expected in populated areas.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe National Weather Service is responsible for tracking the drifting ash cloud and SIGMETs have been issued throughout the day. See https:\/\/www.weather.gov\/aawu\/SIGMETs for current information for aviation.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E21,000 ft msl \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EObserved in satellite data moving northeast\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Eruption continues and cloud height has decreased to to 21,000 ft (6.4 km) above sea level, moving northeast.","sentUtc":"2023-08-26","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-08-25T19:52:28-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-08-25T19:52:28-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-08-25T19:52:28-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230826\/0132Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ERED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1318\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EExplosive eruptive activity is continuing at Shishaldin Volcano. An ash cloud rising to about 30,000 ft (9 km) above sea level and extending roughly 280 miles (450 km) northeast of the volcano is evident in satellite data. A SIGMET for this ash cloud has been issued. Seismic tremor increased this afternoon and peaked around 4:30 pm Alaska time (00:30 UTC). The tremor has since dropped but remains elevated.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBased on previous eruption cycles, significant ash emissions are likely to continue for the next few hours. Pyroclastic and mudflows are likely on the immediate flanks of the volcano.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EDrifting at about 30,000 ft (9 km) above sea level.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Eruption cloud to 30,000 ft (9 km) above sea level continues, drifting northeast.","sentUtc":"2023-08-26","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-08-25T18:10:59-07:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-08-25T18:10:59-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-08-25T18:10:59-07:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230825\/2004Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1317\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EAn ash cloud from Shishaldin Volcano reaching 28,000 ft (8.5 km) has been reported by aircraft in the vicinity of the volcano. This follows a several-hour increase in seismic activity. In response, the Aviation Color Code is being raised to RED and the Volcano Alert Level is being raised to WARNING.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBased on previous eruption cycles, significant ash emissions are likely to continue for several hours. Pyroclastic and mudflows are likely on the immediate flanks of the volcano.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E30,000 ft. (9 km) above sea level\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Elower plume driving NE, higher plume E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"An explosive eruption is underway with an ash cloud now up to 28,000 ft (8.5 km) above sea level.","sentUtc":"2023-08-25","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-08-25T12:49:03-07:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-08-25T12:49:03-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-08-25T12:49:03-07:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230825\/1936Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1316\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe level of unrest has increased at Shishaldin Volcano. Seismic tremor began to increase at around 03:00 this morning Alaska time (11:00 UTC) and is escalating. Elevated surface temperatures consistent with lava erupting at the summit are evident in the latest satellite data. Local infrasound data suggests low-level explosions are occurring. Based on previous eruption cycles over the past month, ash emissions are likely over the next few hours. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThere have been seven significant explosive events during the current eruption. These have resulted in ash clouds with heights up to 40,000 ft (12 km) above sea level and pyroclastic deposits near the volcano.  These events can occur with little warning. It is also possible that ash emissions may occur at a lower-level, steady state and be sustained for many hours. AVO is monitoring the volcano closely and will issue additional Volcanic Activity Notice’s to provide updates of significant changes in activity as they occur.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network. In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Seismicity is increasing, and an explosive eruption is likely.","sentUtc":"2023-08-25","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-08-25T12:05:35-07:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-08-25T12:05:35-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-08-25T12:05:35-07:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230825\/1806Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ECleveland (VNUM #311240)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1311\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E5676 ft (1730 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EA decrease in seismic activity at Mount Cleveland over the past few weeks to background levels has prompted the Alaska Volcano Observatory to downgrade the Aviation Color Code and Volcano Alert Level from YELLOW\/ADVISORY to GREEN\/NORMAL.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAn increase in the number of small earthquakes near Mount Cleveland in mid-July 2023 prompted raising the Aviation Color Code and Volcano Alert Level from UNASSIGNED\/UNASSIGNED to YELLOW\/ADVISORY on July 19. This activity  continued for the next several weeks but has since declined. Slightly elevated surface temperatures and weak gas emissions from the summit crater continue to be observed occasionally, but this is not unusual for Mount Cleveland.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe last eruptive activity at Mount Cleveland was a short-lived explosion during the evening (local time) of June 1, 2020. Despite the current pause, the eruptive period at Mount Cleveland, dating back to 2001, remains ongoing and future explosions are likely. These have occurred without warning and typically generate small clouds of volcanic ash that are a hazard in the immediate vicinity of the volcano, though more significant ash emissions are possible.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMount Cleveland is currently monitored with a five-station real-time seismic network. We now have enough stations at the volcano to locate volcanic earthquakes thanks to a partnership between AVO and the AVERT (Anticipating Volcanic Eruptions in Real-Time) project at Columbia University. Based on past events, explosive eruptions of Cleveland may occur with little or no warning. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enot applicable\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enot applicable\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ECleveland volcano forms the western portion of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. The volcano is located about 45 miles (75 km) west of the community of Nikolski, and 940 miles (1500 km) southwest of Anchorage. The most recent significant period of eruption began in February 2001 and produced 3 explosive events that generated ash clouds as high as 39,000 ft (11.8 km) above sea level. The 2001 eruption also produced a lava flow and hot avalanche that reached the sea. Since then, Cleveland has been intermittently active producing small lava flows, often followed by explosions that generate small ash clouds generally below 20,000 ft (6 km) above sea level. These explosions also launch debris onto the slopes of the cone producing hot pyroclastic avalanches and lahars that sometimes reach the coastline.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Decrease in seismic activity to background levels.","sentUtc":"2023-08-25","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2023-08-25T09:29:33-07:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-08-25T09:29:33-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-08-25T09:29:33-07:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230817\/1659Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAniakchak (VNUM #312090)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1278\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 56 deg 54 min W 158 deg 12 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Peninsula\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4400 ft (1341 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe number of earthquakes beneath Aniakchak volcano and the measurable uplift of the ground surface in the caldera have declined to background levels. Due to these changes, the Alaska Volcano Observatory is lowering the Aviation Color Code to GREEN and the Volcano Alert Level to NORMAL. There have been no signs of unrest in other monitoring data. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAVO monitors Aniakchak with a local network, which consists of six seismometers, a web camera, and a single infrasound sensor, as well as satellite remote sensing data and regional infrasound and lightning networks. To view current monitoring data, see \u003Ca href=\u0022https:\/\/avo.alaska.edu\/activity\/Aniakchak.php\u0022\u003Ehttps:\/\/avo.alaska.edu\/activity\/Aniakchak.php\u003C\/a\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAniakchak volcano, located in the central portion of the Alaska Peninsula, consists of a stratovolcano edifice with a 10 km (6 mile) diameter summit caldera. The caldera-forming eruption occurred around 3,500 years ago. Postcaldera eruptions have produced lava domes, tuff cones, and larger spatter and scoria cone structures including Half-Cone and Vent Mountain all within the caldera. The most recent eruption occurred in 1931 and created a new vent and lava flows on the western caldera floor while spreading ash over much of southwestern Alaska. Aniakchak volcano is 25 km (15 miles) southeast of the nearest community, Port Heiden, and 670 km (416 miles) southwest of Anchorage, Alaska. \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/gcc02.safelinks.protection.outlook.com\/?url=http%3A%2F%2Fwww.avo.alaska.edu%2F&data=05%7C01%7Chdietterich%40usgs.gov%7C4e428a02cf274911103408db150551b8%7C0693b5ba4b184d7b9341f32f400a5494%7C0%7C0%7C638126884815330179%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=mrKsTvh8yVAs%2FbGq6tQapOq6Q773zJjI9UTvyFMD7YE%3D&reserved=0\u0022\u003Ehttp:\/\/www.avo.alaska.edu\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Earthquake activity beneath Aniakchak volcano has declined to background levels; Aviation Color Code and Volcano Alert Level lowered to GREEN\/NORMAL","sentUtc":"2023-08-17","obs":"avo","vName":"Aniakchak","vnum":"312090","noticeId":"DOI-USGS-AVO-2023-08-17T07:56:06-08:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-08-17T07:56:06-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-08-17T07:56:06-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230816\/1916Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1272\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe level of eruptive activity at Shishaldin Volcano has gradually declined since yesterday afternoon. Seismicity has decreased, and significant explosions or ash emissions are no longer detected. Clear web camera views this morning show only minor steaming at the summit. Recent satellite views indicated a persistent thermal anomaly at the summit, indicating the presence of hot eruptive material.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBased on previous eruption cycles, significant ash emissions may occur again and will likely be preceded by gradually increasing seismicity. Pyroclastic and mudflows will probably happen on the immediate flanks of the volcano should another vigorous episode of eruptive activity occur.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EMinor, mostly steam emissions.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Eruptive episode of the past several days has ended.","sentUtc":"2023-08-16","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-08-16T10:28:46-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-08-16T10:28:46-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-08-16T10:28:46-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230815\/2303Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1271\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EExplosive eruptive activity is continuing at Shishaldin Volcano. A low-level ash cloud to about 16,000 ft (5 km) above sea level and moving northeast is evident in satellite data and was observed by passing pilots. The National Weather Service has issued a SIGMET for this ash cloud.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBased on previous eruption cycles, significant ash emissions may continue for several hours. Pyroclastic and mudflows are likely on the immediate flanks of the volcano.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network. In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lightning data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Edrifting below 16,000 ft (5 km) above sea level, see SIGMET. Emissions from the vent are likely occurring at low levels.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"An ash plume to 16,000 ft (5 km) observed and drifting northeast.","sentUtc":"2023-08-15","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-08-15T14:45:05-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-08-15T14:45:05-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-08-15T14:45:05-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230815\/1135Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1266\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EExplosive eruptive activity is occurring at Shishaldin Volcano. A low-level ash cloud to about 25,000 ft (7.6 km) above sea level and moving northeast is evident in satellite data. This follows a several-hour increase in seismic tremor. Explosion signals have been detected in infrasound data since at least 2:00 AKDT (10:00 UTC) and the National Weather Service has detected lightning in the vicinity of the volcano. A SIGMET for this ash cloud has been issued.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBased on previous eruption cycles, significant ash emissions are likely to continue for the next few hours. Pyroclastic and mudflows are likely on the immediate flanks of the volcano.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Edrifting below 25,000 ft (7.6 km) above sea level, see SIGMET. Emissions from the vent are likely occurring at low levels.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"An ash plume to 25,000 ft (7.6 km), drifting northeast detected.","sentUtc":"2023-08-15","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-08-15T03:11:31-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-08-15T03:11:31-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-08-15T03:11:31-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230815\/0227Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1265\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe level of unrest has increased at Shishaldin Volcano. A steady increase in seismic tremor has been observed over the past 5 hours. Elevated surface temperatures consistent with lava erupting at the summit are evident in the latest satellite data. Based on previous eruption cycles over the past month, ash emissions are likely to occur and may increase over the next few hours. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERecent significant ash events during the current eruption resulted in ash clouds with heights up to 40,000 ft (12 km) above sea level.  These events can occur with little warning. It is also possible that ash emissions may occur at a lower-level, steady state and be sustained for many hours. AVO is monitoring the volcano closely and will issue additional Volcanic Activity Notice’s to provide notice of significant changes in activity as they occur.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network. In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Seismicity is increasing, and an explosive eruption is likely.","sentUtc":"2023-08-15","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-08-14T18:16:47-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-08-14T18:16:47-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-08-14T18:16:47-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230805\/0355Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ERED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1216\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EVolcanic activity has significantly declined at Shishaldin Volcano and any remaining ash emissions are likely low level. Seismic tremor began declining from a peak at 2:00 pm AKDT (22:00 UTC) and is and is currently at low levels. The eruption produced a sustained ash plume ash plume during the period of high seismicity which drifted to the northeast.  Currently, meteorological clouds at 30,000 ft (9 km) above sea level have obscured the volcano and any potential ash clouds.  It is possible that low level ash production could be continuing during this period of waning seismicity.  Due to this decrease in intensity of the eruption, the Aviation Color Code is being lowered to ORANGE and the Alert Level is being lowered to WATCH.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Loewen, Acting Scientist-in-Charge, USGS, mloewen@usgs.gov, (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERonni Grapenthin, Acting Coordinating Scientist, UAFGI, rgrapenthin@alaska.edu, (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShould volcanic activity change significantly, a new notice will be issued.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Seismicity has decreased in intensity, ash emissions most likely at low levels or ceased.","sentUtc":"2023-08-05","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-08-04T17:22:44-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-08-04T17:22:44-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-08-04T17:22:44-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230804\/2207Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ERED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1215\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEruptive activity continues at Shishaldin Volcano, with continuous ash emissions, strongly elevated surface temperatures, and high levels of seismic tremor. A continuous ash plume extends to the east-northeast with two branches visible in satellite imagery and confirmed by passing aircraft. The volcanic cloud extends up to ~112 miles (~180 km) from the volcano, with its top as high as 31,000 ft (9.4 km) above sea level. Additionally, a gas-rich but less ash-laden volcanic plume is also drifting to the southeast. The National Weather Service has issued a SIGMET for these ash clouds, a Marine Weather Statement and a Special Weather Statement for trace ash on marine waters and land areas downwind of Shishaldin Volcano. The color code and alert level remain at RED\/WARNING. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBased on previous eruption cycles, significant ash emissions are likely to continue for several hours. Pyroclastic and mudflows are likely on the immediate flanks of the volcano.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E31,000 ft. (9.4 km) above sea level\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Elower plume drifting NE, higher plume E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Loewen, Acting Scientist-in-Charge, USGS, mloewen@usgs.gov, (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERonni Grapenthin, Acting Coordinating Scientist, UAFGI, rgrapenthin@alaska.edu, (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShould volcanic activity change significantly, a new notice will be issued.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Ash emissions continue; plume as high as 31,000 ft (9.4 km) asl drifting primarily east-northeast; elevated seismic tremor continues.","sentUtc":"2023-08-04","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-08-04T13:48:44-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-08-04T13:48:44-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-08-04T13:48:44-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230804\/1817Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1214\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EAn ash cloud from Shishaldin Volcano reaching 30,000 ft (9 km) above sea level was observed in satellite data at 9:00 am AKDT (17:00 UTC). This follows a several-hour increase in observed eruptive activity. In response, the Aviation Color Code is being raised to RED and the Volcano Alert Level is being raised to WARNING. The National Weather Service has issued a SIGMET for this ash cloud, and a Special Weather Statement has been issued for possible trace ash on marine waters downwind of Shishaldin Volcano.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBased on previous eruption cycles, significant ash emissions are likely to continue for several hours. Pyroclastic and mudflows are likely on the immediate flanks of the volcano.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E30,000 ft. (9 km) above sea level\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Elower plume driving NE, higher plume E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Loewen, Acting Scientist-in-Charge, USGS, mloewen@usgs.gov, (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERonni Grapenthin, Acting Coordinating Scientist, UAFGI, rgrapenthin@alaska.edu, (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"An explosive eruption is underway with an ash cloud now up to 30,000 ft (9 km) above sea level.","sentUtc":"2023-08-04","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-08-04T10:02:36-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-08-04T10:02:36-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-08-04T10:02:36-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230804\/1704Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1213\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EExplosive eruptive activity is occurring at Shishaldin Volcano. A low-level ash cloud up to 25,000 ft (7.6 km) above sea level and extending 37-47 miles (60-75 km) northeast of the volcano is evident in satellite data at 5:20 AM AKDT (13:20 UTC) and reported by passing pilots at 8:36 AM AKDT (16:36 UTC). This follows a 20-hour increase in seismic tremor and an increase in surface temperatures at the volcano seen in satellite data. Explosion signals have been detected in infrasound and seismic data overnight during cloudy altmospheric conditions. Surface temperatures have greatly increased in the past few hours. The National Weather Service has issued a SIGMET for this ash cloud.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBased on previous eruption cycles, significant ash emissions are likely to continue for the next few hours. Pyroclastic and mudflows are likely on the immediate flanks of the volcano.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E25,000 ft (7.6 km) above sea level\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EExtending up to 75 km northeast\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Loewen, Acting Scientist-in-Charge, USGS, mloewen@usgs.gov, (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERonni Grapenthin, Acting Coordinating Scientist, UAFGI, rgrapenthin@alaska.edu, (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"An ash plume observed to ~25,000 ft (7.6 km) asl and drifting northeast up to 47 miles (75 km).","sentUtc":"2023-08-04","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-08-04T08:29:06-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-08-04T08:29:06-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-08-04T08:29:06-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230804\/0136Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1205\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe level of unrest has increased at Shishaldin Volcano. A steady increase in seismic tremor has been observed over the past 7 hours. Despite cloud cover obscuring the volcano, elevated surface temperatures consistent with lava erupting at the summit are evident in the latest satellite data. Based on previous eruption cycles, ash emissions are likely to occur and may increase over the next few hours. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERecent significant ash events during the current eruption resulted in ash clouds with heights up to 40,000 ft (12 km) above sea level.  These events can occur with little warning. It is also possible that ash emissions may occur at a lower-level, steady state and be sustained for many hours. AVO is monitoring the volcano closely and will issue additional Volcanic Activity Notice’s to provide notice of significant changes in activity as they occur.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network.  In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Loewen, Acting Scientist-in-Charge, USGS, mloewen@usgs.gov, (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERonni Grapenthin, Acting Coordinating Scientist, UAFGI, rgrapenthin@alaska.edu, (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Seismicity is increasing, and an explosive eruption is likely.","sentUtc":"2023-08-04","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-08-03T17:17:51-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-08-03T17:17:51-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-08-03T17:17:51-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230803\/2342Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESemisopochnoi (VNUM #311060)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1198\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2625 ft (800 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003ENo eruptive activity has been observed at Semisopochnoi volcano since May 5, 2023, and there are no signs of heighted volcanic unrest. Reflecting these conditions, the Aviation Color Code is being lowered to GREEN and Volcano Alert Level to NORMAL. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe last evidence of ash emissions from the volcano was observed on May 5 and consisted of a light dusting of ash on the northwest flank of Mount Young. The last detection of possible explosions in monitoring data was April 25, 2023.\u202fSince this time, earthquake activity has been at low levels. Steam plumes continue from the north crater of Mount Young. Although steaming was not observed from this vent prior the start of this eruption, it is common for steam plumes to persist at volcanoes for years following an eruption as the volcano slowly cools. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe current eruption sequence at Semisopochnoi began in September 2018 and has consisted of small eruptions producing minor ash deposits within the vicinity of the active north crater of Mount Young and ash clouds usually under 10,000 ft (3 km) above sea level with occasional periods of continuous ash production. While current observations indicate that this eruption may be over, it is also possible activity could resume, and small ash-producing events could occur with little warning. The Alaska Volcano Observatory will continue to closely monitor Semisopochnoi and report on any changes in activity. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESemisopochnoi is monitored by a local seismic and infrasound network, local web cameras, regional lightning and infrasound sensors, and satellite data.\u202f \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENA\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe remote Semisopochnoi volcano occupies a young volcanic island in the western Aleutians. The uninhabited island is part of the Alaska Maritime National Wildlife Refuge. It is located 65 km (40 mi) northeast of Amchitka Island and 200 km (130 mi) west of Adak, Alaska. Semisopochnoi volcano is dominated by an 8-km (5-mile) diameter caldera that contains a small lake and several post-caldera cones and craters. The age of the caldera is not known with certainty but is likely early Holocene. The north cone of Mount Young, in the southwest part of the caldera, is the site of the current eruption, which began in 2018. The last known eruption prior to 2018 was in 1987 from Sugarloaf Peak on the south coast of the island.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Loewen, Acting Scientist-in-Charge, USGS, mloewen@usgs.gov, (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERonni Grapenthin, Acting Coordinating Scientist, UAFGI, rgrapenthin@alaska.edu, (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at \u003Ca href=\u0022http:\/\/www.avo.alaska.edu\u0022\u003Ehttp:\/\/www.avo.alaska.edu\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Volcanic unrest has declined with no eruptive activity detected in 3 months. Aviation Color Code and Volcano Alert Level lowered to GREEN\/NORMAL.","sentUtc":"2023-08-03","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2023-08-03T09:36:51-08:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-08-03T09:36:51-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-08-03T09:36:51-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230726\/2127Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1146\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe eruption of Shishaldin Volcano has gradually declined after increasing overnight. Seismicity has decreased and significant explosions are no longer being detected in infrasound data. Meteorological clouds up to 20,000–25,000 ft (6.1–7.6 km) above sea level began obscuring views of the volcano starting around 11:30 am AKDT (17:30 UTC). It is likely that lingering low-level ash emissions are continuing in the vicinity of the volcano.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESeismic activity and satellite data indicated that eruptive activity began increasing around 10:00 pm AKDT on July 25 (July 26 06:00 UTC). A sustained 15,000 ft (6 km) ash cloud was detected around 5:00 am AKDT (13:00 UTC) and drifted ENE from the volcano. Ash emissions, while diffuse, were visible in satellite data extending about 78 mi (125 km) from the volcano until clouds obscured views starting around 11:30 AKDT (17:30 UTC). The National Weather Service issued a SIGMET for this cloud.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network. The local monitoring network has been partially impaired over the last few weeks due to telecommunications issues but seismic stations and web cameras south of the volcano were brought back online on July 19. In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Edrifting below 15,000 ft (4.6 km) above sea level, see SIGMET. Emissions from the vent are likely occurring at low levels.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMatt Loewen, Acting Scientist-in-Charge, USGS, cwaythomas@usgs.gov, (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI, dfee1@alaska.edu, (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"- Explosive eruptive activity gradually declining. Lingering low-level ash emissions are possible in the vicinity of the volcano.","sentUtc":"2023-07-26","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-07-26T11:50:27-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-07-26T11:50:27-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-07-26T11:50:27-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230726\/1151Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1145\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EExplosive eruptive activity is occurring at Shishaldin Volcano. A low-level ash cloud to about 15,000 ft (6 km) above sea level and moving ENE is evident in satellite data. This follows a several-hour increase in seismic tremor and an increase in temperatures at the volcano seen in satellite data. Explosion signals have been detected in infrasound data since at least 02:00 AKDT (10 UTC). The National Weather Service has issued a SIGMET for this ash cloud, and a Marine Weather Statement has been issued for possible trace ash on marine waters NE of the volcano.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBased on previous eruption cycles, significant ash emissions are likely to continue for the next few hours. Pyroclastic and mudflows are likely on the immediate flanks of the volcano.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe last four significant ash events during the current eruption resulted in ash clouds with heights up to 40,000 ft. (12 km) above sea level, similar to other historical eruptions. These events can occur with little warning. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network. The local monitoring network has been partially impaired over the last few weeks due to telecommunications issues but seismic stations and web cameras south of the volcano were brought back online on July 19. In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E15,000 ft (4.6 km) above sea level\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS, cwaythomas@usgs.gov, (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI, dfee1@alaska.edu, (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"A low-level ash cloud to 15,000 ft above sea level is evident in satellite data.","sentUtc":"2023-07-26","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-07-26T02:38:05-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-07-26T02:38:05-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-07-26T02:38:05-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230726\/1011Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1144\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe level of unrest has increased at Shishaldin Volcano. A steady increase in seismic tremor over the past 4 hours and an increase in temperatures at the volcano observed in satellite data over the past 2 hours suggests that explosive activity is imminent.  Despite cloud cover obscuring the volcano, elevated surface temperatures consistent with lava erupting at the summit are evident in the latest satellite data. Based on previous eruption cycles, minor ash emissions are likely to occur and may increase over the next few hours. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe last four significant ash events during the current eruption resulted in ash clouds with heights up to 40,000 ft. (12 km) above sea level, similar to other historical eruptions. These events can occur with little warning. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network. The local monitoring network has been partially impaired over the last few weeks due to telecommunications issues but seismic stations and web cameras south of the volcano were brought back online on July 19. In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown but explosive eruption is imminent.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS, cwaythomas@usgs.gov, (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI, dfee1@alaska.edu, (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Seismic activity has increased and therefore the likelihood of explosive activity in the near future has increased.","sentUtc":"2023-07-26","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-07-26T01:05:14-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-07-26T01:05:14-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-07-26T01:05:14-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230723\/1218Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ERED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1123\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EVolcanic activity has significantly declined at Shishaldin Volcano. Seismic tremor began declining from a peak at 12:30 am AKDT (08:30 UTC) and is and is currently at low levels. Significant ash eruption notably decreased in satellite data around 1:30 am (09:30 UTC). Satellite data continue to indicate elevated surface temperatures at the summit associated with lava erupting at the surface and possible low-level ash emissions below regional cloud tops which are currently at around 20,000 ft. (6 km) above sea level.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA sustained ash plume with a height of 37,000 ft. (11 km) above sea level erupted between 11:20 pm AKDT on July 22 (07:20 UTC on July 23) and 12:30 am on July 23 (08:30 UTC on July 23). Around this time plume height decreased to around 15,000 ft. (4.5 km) above sea level.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA detached plume is currently drifting to the northeast along the Alaska Peninsula. The National Weather Service has issued a SIGMET for this ash cloud, as well as a Marine Weather Statement and an Ashfall Advisory that were issued for areas that might expect ashfall associated with this eruption.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network. The local monitoring network has been partially impaired over the last few weeks due to telecommunications issues but seismic stations and web cameras south of the volcano were brought back online on July 19. In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Eunknown, below 20,000 ft. (6 km) above sea level\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EMain eruption cloud detached and drifting to the northeast, see current NWS SIGMET. \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS, cwaythomas@usgs.gov, (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI, dfee1@alaska.edu, (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Eruption activity reduced with detached ash plume drifting to the northeast.","sentUtc":"2023-07-23","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-07-23T03:48:19-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-07-23T03:48:19-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-07-23T03:48:19-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230723\/0743Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1122\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EAn ash cloud from Shishaldin Volcano reaching 30,000 ft. (9 km) was observed in satellite data and pilot reports at 11:30 pm AKDT (07:30 UTC on July 23). This follows a several-hour increase in observed eruptive activity. In response, the aviation Color Code is being raised to RED and the Volcano Alert Level is being raised to WARNING. The National Weather Service has issued a SIGMET for this ash cloud, and a Special Weather Statement has been issued for possible trace ash on False Pass.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBased on previous eruption cycles, significant ash emissions are likely to continue for an hour or more. Pyroclastic and mudflows are likely on the immediate flanks of the volcano.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network. The local monitoring network has been partially impaired over the last few weeks due to telecommunications issues but seismic stations and web cameras south of the volcano were brought back online on July 19. In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E30,000 ft. (9 km) above sea level\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EPlume is moving northeast\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS, cwaythomas@usgs.gov, (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI, dfee1@alaska.edu, (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Ash plume observed to 30,000 ft. asl.","sentUtc":"2023-07-23","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-07-22T23:38:42-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-07-22T23:38:42-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-07-22T23:38:42-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230723\/0053Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1121\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe level of unrest has increased at Shishaldin Volcano over the past 6 hours. A steady increase in seismic tremor and intermittent infrasound signals consistent with small explosions are ongoing. Despite cloud cover obscuring the volcano, elevated surface temperatures consistent with lava erupting at the summit are evident in the latest satellite data. Based on previous eruption cycles, minor ash emissions are likely to occur and may increase over the next few hours. Clouds are obscuring web cameras and satellite images, and we have had no clear views of the volcano over the past day. Based on the level of unrest, we infer that any ash emissions occurring are below 20,000 ft. (6 km) above sea level and below the altitude of clouds in the region.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe last three significant ash events during the current eruption resulted in ash clouds up to 40,000 ft. (12 km) above sea level, similar to other historical eruptions. These events can occur with little warning. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network. The local monitoring network has been partially impaired over the last few weeks due to telecommunications issues but seismic stations and web cameras south of the volcano were brought back online on July 19. In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lighting data, and satellite images to detect eruptions.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Eunknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EMeteorological cloud tops 20,000\u201330,000 ft. (6\u20139 km) above sea level. Ash emissions possible below this level.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A 660 ft. (200 m) wide funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft. (14 km) above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS, cwaythomas@usgs.gov, (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI, dfee1@alaska.edu, (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Eruption activity increasing, ash emissions possible up to 20,000 ft. asl.","sentUtc":"2023-07-23","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-07-22T15:49:07-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-07-22T15:49:07-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-07-22T15:49:07-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230719\/2018Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ECleveland (VNUM #311240)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUNASSIGNED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1094\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E5676 ft (1730 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThere has been an increase in the number of earthquakes observed near Cleveland volcano over the past week. Numerous earthquakes have been detected and 37 of these were large enough to be located by the local seismic network. Most of the earthquakes from early in the week located in the mid to shallow portions of the Earth’s crust, less than 11 miles (18 km) below the surface, while more recent earthquakes have been located at shallower depths, less than 4 miles (6 km) below the surface. These earthquakes are small (less than magnitude 2), but the frequency of events is unusual for Cleveland. These data along with satellite observations of elevated surface temperatures at the summit crater and continued gas emissions suggest an increased likelihood of a future eruption. In response, the Alaska Volcano Observatory is increasing the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe last eruptive activity at Cleveland volcano was a short-lived explosion during the evening (local time) of June 1, 2020. Despite the current pause, the eruptive period at Cleveland, dating back to 2001, remains ongoing and future explosions are likely. These have occurred without warning and typically generate small clouds of volcanic ash that are a hazard in the immediate vicinity of the volcano, though more significant ash emissions are possible.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ECleveland volcano is currently monitored with a five-station real-time seismic network. Based on past events, explosive eruptions of Cleveland may occur with little or no warning. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enot applicable\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enot applicable\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ECleveland volcano forms the western portion of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. The volcano is located about 45 miles (75 km) west of the community of Nikolski, and 940 miles (1500 km) southwest of Anchorage. The most recent significant period of eruption began in February 2001 and produced 3 explosive events that generated ash clouds as high as 39,000 ft (11.8 km) above sea level. The 2001 eruption also produced a lava flow and hot avalanche that reached the sea. Since then, Cleveland has been intermittently active producing small lava flows, often followed by explosions that generate small ash clouds generally below 20,000 ft (6 km) above sea level. These explosions also launch debris onto the slopes of the cone producing hot pyroclastic avalanches and lahars that sometimes reach the coastline.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EKristi Wallace, Acting Scientist-in-Charge, USGS kwallace@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPavel Izbekov, Acting Coordinating Scientist, UAFGI peizbekov@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Increased earthquake rate increases potential for eruption.","sentUtc":"2023-07-19","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2023-07-18T17:18:02-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-07-18T17:18:02-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-07-18T17:18:02-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230719\/0028Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ETakawangha (VNUM #311090)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1093\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 51 deg 52 min W 178 deg 1 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4754 ft (1449 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEarthquake activity near Takawangha Volcano has decreased in both rate and magnitude from the peak of the swarm on March 9–11 when over 150 earthquakes per day were located on Tanaga Island to less than 3 earthquakes per day in the last few weeks. Recent satellite images do not indicate any ongoing deformation on the island. No other signs of volcanic unrest have been detected. The Alaska Volcano Observatory is therefore lowering the Aviation Color Code to GREEN and the Volcano Alert Level to NORMAL.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe Alaska Volcano Observatory will continue to closely monitor seismic activity on Tanaga Island.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ETakawangha is monitored with a local seismic network, a single local infrasound sensor, regional infrasound and lightning sensors, and satellite imagery.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor current monitoring data: \u003Ca href=\u0022https:\/\/avo.alaska.edu\/activity\/Takawangha.php\u0022\u003Ehttps:\/\/avo.alaska.edu\/activity\/Takawangha.php\u003C\/a\u003E\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone observed\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone observed\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ETakawangha is a remote, 1,449 m (4,754 ft)-high stratovolcano located on the northeast portion of Tanaga Island, roughly 95 km (59 miles) west of Adak in the Andreanof Islands. Takawangha's summit is mostly ice-covered, except for four young craters that have erupted ash and lava flows in the last few thousand years. Parts of Takawangha's edifice are hydrothermally altered and may be unstable, possibly leading to localized debris avalanches from its flanks. Takawangha lies across a saddle from historically active Tanaga volcano to the west. No historical eruptions are known from Takawangha; however, field work shows that recent eruptions have occurred, and it is possible that historic eruptions attributed to Tanaga may instead have come from Takawangha.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EKristi Wallace, Acting Scientist-in-Charge, USGS kwallace@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPavel Izbekov, Acting Coordinating Scientist, UAFGI peizbekov@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Earthquake activity decreased to near background levels.","sentUtc":"2023-07-19","obs":"avo","vName":"Takawangha","vnum":"311090","noticeId":"DOI-USGS-AVO-2023-07-18T16:12:28-08:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-07-18T16:12:28-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-07-18T16:12:28-08:00","nvewsThreat":"Low Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230719\/0028Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ETanaga (VNUM #311080)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1092\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 51 deg 53 min W 178 deg 8 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E5925 ft (1806 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEarthquake activity near Tanaga Volcano has decreased in both rate and magnitude from the peak of the swarm on March 9–11 when over 150 earthquakes per day were located on Tanaga Island to less than 3 earthquakes per day in the last few weeks. Recent satellite images do not indicate any ongoing deformation on the island. No other signs of volcanic unrest have been detected. The Alaska Volcano Observatory is therefore lowering the Aviation Color Code to GREEN and the Volcano Alert Level to NORMAL.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe Alaska Volcano Observatory will continue to closely monitor seismic activity on Tanaga Island.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ETanaga is monitored with a local seismic network, a single local infrasound sensor, regional infrasound and lightning sensors, and satellite imagery.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor current monitoring data: \u003Ca href=\u0022https:\/\/avo.alaska.edu\/activity\/Tanaga.php\u0022\u003Ehttps:\/\/avo.alaska.edu\/activity\/Tanaga.php\u003C\/a\u003E\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone observed\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone observed\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ETanaga Island lies in the Andreanof Islands approximately 100 km (62 miles) west of the community of Adak and 2025 km (1260 miles) SW of Anchorage. The northern half of the island is home to the Tanaga volcanic complex, comprising three main volcanic edifices. Tanaga Volcano is the tallest of these (1,806 m or 5,925 ft) and lies in the center of the complex. The last reported eruption of Tanaga occurred in 1914 and earlier eruptions were reported in 1763-1770, 1791, and 1829. Reports of these eruptions are vague, but deposits on the flanks of the volcano show that typical eruptions produce blocky lava flows and occasional ash clouds. Eruptions have occurred both from the summit vent and a 1,584 m (5,197 ft)-high satellite vent on the volcano's northeast flank. Immediately west of Tanaga volcano lies Sajaka, a 1,354 m (4,443 ft)-high compound edifice with an older cone to the east that collapsed into the sea within the last few thousand years, and a new cone that has grown in the breach. The new cone is 1,312 m (4,305 ft) high and consists of steeply dipping, interbedded cinders and thin, spatter-fed lava flows. To the east of Tanaga lies Takawangha, which is separated from the other active volcanic vents by a ridge of older rock. Takawangha's 1,449 m (4,754 ft)-high summit is mostly ice-covered, except for four young craters that have erupted ash and lava flows in the last few thousand years. Parts of Takawangha's edifice are hydrothermally altered and may be unstable, and could produce localized debris avalanches. No historical eruptions are known from Sajaka or Takawangha; however, field work shows that recent eruptions have occurred and it is possible that historic eruptions attributed only to Tanaga may instead have come from these other vents.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EKristi Wallace, Acting Scientist-in-Charge, USGS kwallace@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPavel Izbekov, Acting Coordinating Scientist, UAFGI peizbekov@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Earthquake activity decreased to near background levels.","sentUtc":"2023-07-19","obs":"avo","vName":"Tanaga","vnum":"311080","noticeId":"DOI-USGS-AVO-2023-07-18T15:37:02-08:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-07-18T15:37:02-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-07-18T15:37:02-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230718\/2008Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ERED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1084\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe eruption of Shishaldin Volcano has gradually declined. Current observations indicate continued but low-level ash emissions below 10,000 ft. (3 km) above sea level and drifting to the south. Reflecting this lower-level activity, the Aviation Color Code is being reduced to ORANGE and the Volcano Alert Level is being lowered to WATCH. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThis morning a significant ash plume was detected starting around 7:00 am AKDT (15:00 UTC) and reaching a height of around 30,000 ft. (7 km) above sea level. Around 9:30 am AKDT (17:30 UTC) satellite data showed the main initial plume had detached but residual, low-level ash emissions continued from the vent. The detached plume is still visible between 60–280 mi (100 and 450 km) away from the volcano. The National Weather Service has issued a SIGMET for this cloud.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EExplosive eruptive activity can resume quickly and with little warning. Eruptions from Shishaldin have produced minor and on occasion significant ash clouds in the past. Shishaldin is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network. The local monitoring network is partially impaired, therefore AVO is also using nearby geophysical networks, satellite data and regional infrasound and lighting data to detect activity. AVO will continue to closely monitor unrest at Shishaldin Volcano.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E10,000 ft. above sea level\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ELow level ash cloud drifting south from the summit. Main eruption cloud detached 60\u2013280 mi (100 and 450 km) to the south, see current NWS SIGMET.\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EKristi Wallace, Acting Scientist-in-Charge, USGS kwallace@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPavel Izbekov, Acting Coordinating Scientist, UAFGI peizbekov@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Low level ash cloud continues. Aviation Color Code\/Volcano Alert Level redued to ORANGE\/WATCh","sentUtc":"2023-07-18","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-07-18T11:37:08-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-07-18T11:37:08-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-07-18T11:37:08-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230718\/1637Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ERED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1083\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EAn ash cloud with an initial height of around 30,000 ft. (7 km) above sea level from Shishaldin volcano began at 7:00 am AKDT (15:00 UTC) and is drifting SSE. The eruption is continuing and recent pilot observations estimated a 24,000 ft. (6 km) above sea level height. The aviation Color Code remains at RED and the Volcano Alert Level at WARNING. The National Weather Service has issued a SIGMET for this activity.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EEruptive activity began increasing overnight starting around 1 am AKDT (09:00 UTC) with increased lava eruption from or within the summit crater but no significant ash emissions. Activity was detected on regional infrasound arrays, increasing seismic tremor, and elevated surface temperatures in satellite data. Overnight webcam images confirmed glowing from the summit with only minor ash emission.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EEruptions from Shishaldin have produced minor and on occasion significant ash clouds in the past.  These can occur with little warning. Shishaldin is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network. The local monitoring network is partially impaired, therefore AVO is also using nearby geophysical networks, satellite data and regional infrasound and lighting data to detect activity. AVO will continue to closely monitor unrest at Shishaldin Volcano. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E30,000 ft. above sea level\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESSE Drifting ash cloud seen in satellite imagery, see current NWS SIGMET\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EKristi Wallace, Acting Scientist-in-Charge, USGS kwallace@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPavel Izbekov, Acting Coordinating Scientist, UAFGI peizbekov@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Ash plume from Shishaldin Volcano estimated at 30,000 ft. asl, drifting south. Aviation Color Code\/Volcano Alert Level remains at RED\/WARNING","sentUtc":"2023-07-18","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-07-18T08:22:54-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-07-18T08:22:54-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-07-18T08:22:54-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230718\/1556Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1082\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe eruption of Shishaldin Volcano has intensified. A rapidly growing ash cloud was observed starting at 7:00 am AKDT (15:00 UTC) and drifting SSE. Cloud height is undertermined at this time and could be more than 20,000 ft. above sea level (6 km). In response, the aviation Color Code is being raised to RED and the Volcano Alert Level is being raised to WARNING. The National Weather Service has issued a SIGMET for this activity.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EEruptive activity began increasing overnight starting around 1 am AKDT (09:00 UTC) with increased lava eruption from or within the summit crater but no significant ash emissions. Activity was detected on regional infrasound arrays, increasing seismic tremor, and elevated surface temperatures in satellite data. Overnight webcam images confirmed glowing from the summit with only minor ash emission.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EEruptions from Shishaldin have produced minor and on occasion significant ash clouds in the past.  These can occur with little warning. Shishaldin is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network. The local monitoring network is partially impaired, therefore AVO is also using nearby geophysical networks, satellite data and regional infrasound and lighting data to detect activity. AVO will continue to closely monitor unrest at Shishaldin Volcano. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Eunknown at this time, appear to have rapid growth over 20,000 ft. asl\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESSE Drifting ash cloud seen in satellite imagery, see current NWS SIGMET\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EKristi Wallace, Acting Scientist-in-Charge, USGS kwallace@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPavel Izbekov, Acting Coordinating Scientist, UAFGI peizbekov@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Increased ash emissions detected at Shishaldin Volcano. Aviation Color Code\/Volcano Alert Level remain at RED\/WARNING","sentUtc":"2023-07-18","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-07-18T06:10:01-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-07-18T06:10:01-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-07-18T06:10:01-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230718\/0102Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAhyi Seamount (VNUM #284141)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EU.S. Geological Survey\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/N168\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 20 deg 25 min E 145 deg 1 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENorthern Mariana Islands\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E-259 ft (-79 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EConsistent signs of unrest at Ahyi Seamount have not occurred for over four weeks. Underwater pressure sensors near Wake Island have not detected clear signs of underwater volcanic activity since early June and the last satellite observations of discolored water near the seamount was seen on May 22, 2023. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EStarting mid-October 2022, hydroacoustic sensors at Wake Island, 1,410 miles (2,270 km) east of Ahyi, began recording signals consistent with activity from an undersea volcanic source. In collaboration with the Laboratoire de Geophysique in Tahiti, a combined analysis of the hydroacoustic signals and data from seismic stations located at Guam and Chichijima Island, Japan, confirmed that the source of this activity was at or near Ahyi seamount.  Observations of discolored water above the seamount in satellite data confirmed activity at Ahyi. The activity appears to have paused beginning in early April but briefly resumed in late May.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDue to the apparent absence of activity over the last month, the aviation color code is being lowered from YELLOW to UNASSIGNED and the alert level is being lowered from ADVISORY to UNASSIGNED. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENo volcanic cloud produced\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EWater discoloration no longer observed above seamount in satellite images\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAhyi seamount is a large conical submarine volcano that rises to within 450 ft (137 m) of the sea surface about 11 miles (18 km) southeast of Farallon de Pajaros (Uracas) Island in the northern Marianas, about 370 miles (600 km) north of the island of Saipan. In the past, discolored water has been observed over the submarine volcano. In 1979, the crew of a fishing boat felt shocks over the summit area and then observed upwelling of sulfur-bearing water. On April 24-25, 2001 an explosive submarine eruption was detected seismically from a seismic station on Rangiroa Atoll, Tuamotu Archipelago. The event was well constrained (+\/- 9 miles or 15 km) at a location near the southern base of Ahyi.\u003Cbr \/\u003E \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ECNMI Homeland Security and Emergency Management\u003Cbr \/\u003Ehttp:\/\/www.cnmihsem.gov.mp\/\u003Cbr \/\u003E\u003Cbr \/\u003EUSGS Northern Mariana Duty Scientist (907) 786-7497\u003Cbr \/\u003Ehttp:\/\/volcano.wr.usgs.gov\/cnmistatus.php\u003Cbr \/\u003E\u003Cbr \/\u003ESatellite information, Washington VAAC\u003Cbr \/\u003Ehttp:\/\/www.ssd.noaa.gov\/VAAC\/washington.html\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"No recent observations of volcanic activity. Code and Alert level lowered to UNASSIGNED.","sentUtc":"2023-07-18","obs":"nmi","vName":"Ahyi Seamount","vnum":"284141","noticeId":"DOI-USGS-NMI-2023-07-17T17:50:40-07:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2023-07-17T17:50:40-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2023-07-17T17:50:40-07:00","nvewsThreat":"Very Low Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230716\/1534Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ERED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1067\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EExplosive eruptive activity at Shishaldin Volcano has declined. Seismicity has significantly declined and no explosion signals are being detected in infrasound (pressure sensor) data. The drifting ash cloud from last night's activity is still visible in satellite imagery about 350 nautical miles ESE from the volcano. The NWS has a SIGMET for this cloud and estimate it to be under 16,000 ft (4.9 km) above sea level. In response to this decline in explosive activity, the Aviation Color Code is being reduced to ORANGE and the Volcano Alert Level is being raised to WATCH. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EExplosive eruptive activity can resume quickly and with little warning. Eruptions from Shishaldin have produced minor and on occasion significant ash clouds in the past. Shishaldin is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network. The local monitoring network is partially impaired, therefore AVO is also using nearby geophysical networks, satellite data and regional infrasound and lighting data to detect activity. AVO will continue to closely monitor unrest at Shishaldin Volcano. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone detected at the volcano, drifting ash cloud under 16,000 ft above sea level\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EESE Drifting ash cloud still seen in satellite imagery, see current NWS SIGMET\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EKristi Wallace, Acting Scientist-in-Charge, USGS kwallace@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPavel Izbekov, Acting Coordinating Scientist, UAFGI peizbekov@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Explosive eruptive activity has declined at Shishaldin Volcano. Aviation Color Code\/Volcano Alert Level reduced to ORANGE\/WATCH","sentUtc":"2023-07-16","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-07-16T07:00:17-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-07-16T07:00:17-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-07-16T07:00:17-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230716\/0757Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1066\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe explosive eruption of Shishaldin Volcano is continuing. A continuous ash plume now extends over 80 mi (125 km) to the SSE from the volcano with an altitude of about 16,000 ft (4.9 km) above sea level. Seismicity has remained elevated for over 6 hours and frequent explosion signals are being detected at regional infrasound (pressure sensor) networks. Some explosions are sending ash plumes as high as 20,000 ft (6 km) above sea level. Due to the duration of this current activity and the extent of the distributing ash cloud the Aviation Color Code is being raised to RED and the Volcano Alert Level is being raised to WARNING. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe recent magnitude 7.3 earthquake located 55 mi (89 km) SW of Sand Point is not related to volcanic activity.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EEruptions from Shishaldin have produced minor and on occasion significant ash clouds in the past. These can occur with little warning. Shishaldin is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network. The local monitoring network is partially impaired, therefore AVO is also using nearby geophysical networks, satellite data and regional infrasound and lighting data to detect activity. AVO will continue to closely monitor unrest at Shishaldin Volcano. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Eup to 20,000 feet above sea level\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EDrifting more than 80 mi (125 km) to the SSE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EKristi Wallace, Acting Scientist-in-Charge, USGS kwallace@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPavel Izbekov, Acting Coordinating Scientist, UAFGI peizbekov@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Ash cloud extending over 80 mi (125 km) from Shishaldin. Aviation Color Code\/Volcano Alert Level  raised to RED\/WARNING.","sentUtc":"2023-07-16","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-07-15T22:58:38-08:00","colorCode":"RED","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-07-15T22:58:38-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-07-15T22:58:38-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230716\/0552Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1065\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe eruption of Shishaldin Volcano has intensified. An ash cloud to 15,000 ft  (4.6 km) above sea level and drifting to the SSE has been observed in satellite data starting at about 9:00 pm AKDT (17:00 UTC). The National Weather Service has issued a SIGMET for this activty.  Seismic tremor amplitudes began to increase starting around 5:00 pm AKDT (1:00 UTC) and are continuing.  The actvity has also been observed on regional infrasound (presure sensor) arrays. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EEruptions from Shishaldin have produced minor and on occasion significant ash clouds in the past.  These can occur with little warning. Shishaldin is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network. The local monitoring network is partially impaired, therefore AVO is also using nearby geophysical networks, satellite data and regional infrasound and lighting data to detect activity. AVO will continue to closely monitor unrest at Shishaldin Volcano. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E15,000 feet above sea level\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EDrifting to the SSE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EKristi Wallace, Acting Scientist-in-Charge, USGS kwallace@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPavel Izbekov, Acting Coordinating Scientist, UAFGI peizbekov@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Eruption from Shishaldin intensified producing ash cloud to 15,000 ft asl. ","sentUtc":"2023-07-16","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-07-15T20:56:08-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-07-15T20:56:08-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-07-15T20:56:08-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230714\/1934Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1050\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EA significant explosion occurred at 1:09 am AKDT (9:09 UTC) this morning and produced an ash cloud that initially reached 30,000 to 40,000 ft (9–12 km) above sea level and drifted south over the Pacific Ocean. A second smaller explosion occurred at 7:10 am AKDT (15:10 UTC) and reached ~15,000 ft (4.5 km) above sea level. The National Weather Service issued a SIGMET for these events and suggested a maximum cloud height of 25,000 ft (7.6 km) above sea level for the drifting ash cloud. Web camera images and pilot reports show continued low-level ash emissions this morning including a small ash cloud near the summit around 10:30 am AKDT (18:30 UTC).  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EEruptions from Shishaldin have produced minor and on occasion significant ash clouds in the past.  These can occur with little warning. Shishaldin is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network. The local monitoring network is partially impaired, therefore AVO is also using nearby geophysical networks, satellite data and regional infrasound and lighting data to detect activity. AVO will continue to closely monitor unrest at Shishaldin Volcano. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E15,000 feet above sea level\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EKristi Wallace, Acting Scientist-in-Charge, USGS kwallace@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPavel Izbekov, Acting Coordinating Scientist, UAFGI peizbekov@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Explosive events starting overnight and continuing.  Low-level drifting ash clouds present.","sentUtc":"2023-07-14","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-07-14T11:26:31-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-07-14T11:26:31-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-07-14T11:26:31-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230712\/2013Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1035\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EStrongly elevated surface temperatures continue to be observed at the summit of Shishaldin Volcano in satellite data. Incandescence at the summit was observed in web camera images from last night and sulfur dioxide was detected in satellite data over the past day. In addition, seismic tremor amplitudes have increased over the past day. Together, these observations suggest that lava is likely present within the summit crater of Shishaldin. In response, the Alaska Volcano Observatory is raising the Aviation Color Code to ORANGE and the Alert Level to WATCH.\u202f \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network. The local monitoring network is partially impaired, therefore AVO is also using nearby geophysical networks, satellite data and regional infrasound and lighting data to detect activity. AVO will continue to closely monitor unrest at Shishaldin Volcano. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enot applicable\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enot applicable\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EKristi Wallace, Acting Scientist-in-Charge, USGS kwallace@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Strongly elevated surface temperatures, SO2 detected, seismic tremor and incandescence seen in webcam - color code\/alert level raised to ORANGE\/WATCH. ","sentUtc":"2023-07-12","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-07-12T11:00:19-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-07-12T11:00:19-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-07-12T11:00:19-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230711\/2239Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EGREEN\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A1034\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EStrongly elevated surface temperatures at the summit of Shishaldin Volcano have been observed in satellite data over the past day. Intermittent tremor and low-frequency earthquakes over the past week have gradually become more regular and consistent in the past day. In response, the Alaska Volcano Observatory is raising the Aviation Color Code to YELLOW and the Alert Level to ADVISORY. These observations represent a departure from normal background activity at Shishaldin, but do not necessarily indicate that an eruption will occur. Shishaldin is monitored by local seismic and infrasound sensors, web cameras, and a telemetered geodetic network. The local monitoring network is partially impaired, therefore AVO is also using nearby geophysical networks, satellite data and regional infrasound and lighting data to detect activity. AVO will continue to closely monitor unrest at Shishaldin Volcano.\u003Cbr \/\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enot applicable\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enot applicable\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 26 confirmed eruptions since 1824. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EKristi Wallace, Acting Scientist-in-Charge, USGS kwallace@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"AVO Shishaldin YELLOW\/ADVISORY - Strongly elevated surface temperatures and seismic tremor observed. Color code raised to YELLOW\/ADVISORY.","sentUtc":"2023-07-11","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2023-07-11T13:14:15-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-07-11T13:14:15-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-07-11T13:14:15-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230630\/1835Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/H245\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea is no longer erupting. Lava supply to the Halema\u02bbuma\u02bbu lava lake ceased on June 19 based upon lava lake levels and behavior of the crater floor. Sulfur dioxide emissions have decreased to near pre-eruption background levels.   \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAccordingly, the USGS Hawaiian Volcano Observatory (HVO) is lowering the Volcano Alert Level for ground-based hazards from WATCH to ADVISORY and the Aviation Color Code from ORANGE to YELLOW.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESeismic activity—including eruptive tremor—in the summit region has been low since the eruption ceased. Over that period, gradual inflation has been recorded at summit tiltmeters. Overnight webcam views showed some incandescence from previously erupted lava as the lava proceeds to cool. There remains the potential for eruptive activity to resume in the near future at or near the summit of K\u012blauea with little or no warning.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor K\u012blauea for signs of renewed activity. Should volcanic activity change significantly, a new Volcanic Activity Notice will be issued. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHazards are still present on K\u012blauea and are described below. Residents and visitors should stay informed and follow County of Hawai‘i and Hawai\u02bbi Volcanoes National Park guidelines. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor more information about the meaning of aviation color codes, see \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u0022\u003Ehttps:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u003C\/a\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ELevels of volcanic gas (sulfur dioxide and carbon dioxide) can remain locally hazardous even though K\u012blauea is no longer erupting. Sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E) gas emissions have greatly decreased; however, local concentrations of sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E) or hydrogen sulfide (H\u003Csub\u003E2\u003C\/sub\u003ES) may persist in downwind areas, and residents may notice odors of these gases occasionally. Significant hazards also remain around Halema\u02bbuma\u02bbu from crater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPlease\u202fsee the\u202fHawai\u02bbi\u202fVolcanoes National Park website for visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E.\u202f\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea updates will now be issued weekly on Tuesdays. Should volcanic activity change significantly, a new VAN will be issued. Regularly scheduled updates are posted on the HVO website at \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003E \u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"K\u012blauea is no longer erupting; status downgrade to YELLOW\/ADVISORY","sentUtc":"2023-06-30","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2023-06-29T16:15:29-07:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2023-06-29T16:15:29-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2023-06-29T16:15:29-07:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230608\/1837Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ERED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/H221\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO\u202fis\u202flowering\u202fK\u012blauea’s\u202fvolcano alert level from WARNING to WATCH because the initial high effusion rates have declined, and no infrastructure is threatened.  Associated hazards are confined to the closed area established by Hawai\u02bbi Volcanoes National Park.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO\u202fis\u202flowering\u202fK\u012blauea’s aviation color code from RED to ORANGE because there is currently no threat of significant volcanic ash emission into the atmosphere outside of the hazardous closed area within\u202fHawai‘i Volcanoes National Park. The eruption plume continues to rise to the base of the inversion level at about 8,000-10,000 feet above sea level as it did yesterday.  The plume is largely composed of sulfur dioxide gas and minor volcanic particles, but in lower concentrations due to the drop in effusion rate.  Hazards associated with the eruption are limited and are described below. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea’s summit eruption is expected to continue and remain confined to\u202fHalema\u02bbuma\u02bbu\u202fcrater within\u202fHawai‘i Volcanoes National Park.\u202f\u202fHVO does not see any indication of activity migrating elsewhere on K\u012blauea volcano and expects the eruption to remain confined to\u202fthe summit region. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO will continue to monitor this activity closely and report any significant changes in future notices. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe eruption at\u202fK\u012blauea’s\u202fsummit is occurring within a closed area of Hawai'i Volcanoes National Park. Therefore, high levels of volcanic gas are the primary hazard of concern, as this hazard can have far-reaching\u202feffects down-wind. Large amounts of volcanic gas—primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)—are continuously released during eruptions of\u202fK\u012blauea\u202fvolcano. As SO\u003Csub\u003E2\u003C\/sub\u003E is released from the summit, it will react in the atmosphere to create the visible haze known as\u202fvog\u202f(volcanic smog) that has been observed downwind of\u202fK\u012blauea.\u202fVog\u202fcreates the potential for airborne health hazards to residents and visitors, damages agricultural crops and other plants, and affects livestock.\u202fFor more information on gas hazards at the summit of\u202fK\u012blauea, please see:\u202f\u003Ca href=\u0022https:\/\/pubs.er.usgs.gov\/publication\/fs20173017\u0022\u003Ehttps:\/\/pubs.er.usgs.gov\/publication\/fs20173017\u003C\/a\u003E. Vog\u202finformation can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E.\u202f\u003Cbr \/\u003E\u003Cbr \/\u003EAdditional hazards include Pele's hair and other lightweight volcanic glass fragments from the lava fountains that will fall downwind of the fissure vents and dust the ground within a few hundred meters (yards) of the vent\u202f(s). Strong winds may waft lighter particles to greater distances. Residents should minimize exposure to these volcanic particles, which can cause skin and eye irritation.\u202f\u003Cbr \/\u003E\u003Cbr \/\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u202f\u003Cbr \/\u003E\u003Cbr \/\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E.\u003Cbr \/\u003E\u003Cbr \/\u003EPlease see the\u202fHawai\u02bbi\u202fVolcanoes National Park website for visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E.\u202fVisitors to Hawai\u02bbi Volcanoes National Park should note that under southerly (non-trade) wind conditions, there is potential for a dusting of powdery to gritty ash composed of volcanic glass and rock fragments. These ashfalls represent a minor hazard, but visitors should be aware that such dustings at areas around the\u202fK\u012blauea\u202fsummit are possible.\u202f\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea updates will continue to be issued daily. Should volcanic activity change significantly, a new VAN will be issued. Regularly scheduled updates are posted on the HVO website at \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003E \u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"K\u012blauea summit eruption continues in Halema\u2018uma\u2018u with limited hazards; status downgrade to ORANGE\/WATCH","sentUtc":"2023-06-08","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2023-06-07T19:31:22-07:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2023-06-07T19:31:22-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2023-06-07T19:31:22-07:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230607\/1447Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/H159\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea\u202fvolcano is erupting. At approximately 4:44 a.m. HST on June 7, 2023, the USGS Hawaiian Volcano Observatory detected glow in\u202fK\u012blauea\u202fsummit webcam images indicating that an eruption has commenced within Halema\u02bbuma\u02bbu crater in K\u012blauea’s\u202fsummit caldera, within Hawai‘i Volcanoes National Park.\u003Cbr \/\u003E\u003Cbr \/\u003EThe USGS Hawaiian Volcano Observatory is elevating\u202fK\u012blauea’s\u202fvolcano alert level from WATCH to WARNING and its aviation color code from ORANGE to RED as this eruption and associated hazards are evaluated.\u202f\u202f\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe opening phases of eruptions are dynamic. Webcam imagery shows fissures at the base of Halema\u02bbuma\u02bbu crater generating lava flows on the surface of the crater floor. The activity is confined to Halema\u02bbuma\u02bbu and the hazards will be reassessed as the eruption progresses.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO will continue to monitor this activity closely and report any significant changes in future notices.\u003Cbr \/\u003E\u003Cbr \/\u003EHVO is in constant communication with Hawai‘i Volcanoes National Park as this situation evolves. The activity is confined entirely within the park.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe eruption at\u202fK\u012blauea’s\u202fsummit is occurring within a closed area of Hawai'i Volcanoes National Park. Therefore, high levels of volcanic gas are the primary hazard of concern, as this hazard can have far-reaching\u202feffects down-wind. Large amounts of volcanic gas—primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)—are continuously released during eruptions of\u202fK\u012blauea\u202fvolcano. As SO\u003Csub\u003E2\u003C\/sub\u003E is released from the summit, it will react in the atmosphere to create the visible haze known as\u202fvog\u202f(volcanic smog) that has been observed downwind of\u202fK\u012blauea.\u202fVog\u202fcreates the potential for airborne health hazards to residents and visitors, damages agricultural crops and other plants, and affects livestock.\u202fFor more information on gas hazards at the summit of\u202fK\u012blauea, please see:\u202f\u003Ca href=\u0022https:\/\/pubs.er.usgs.gov\/publication\/fs20173017\u0022\u003Ehttps:\/\/pubs.er.usgs.gov\/publication\/fs20173017\u003C\/a\u003E. Vog\u202finformation can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E.\u202f\u003Cbr \/\u003E\u003Cbr \/\u003EAdditional hazards include Pele's hair and other lightweight volcanic glass fragments from the lava fountains that will fall downwind of the fissure vents and dust the ground within a few hundred meters (yards) of the vent\u202f(s). Strong winds may waft lighter particles to greater distances. Residents should minimize exposure to these volcanic particles, which can cause skin and eye irritation.\u202f\u003Cbr \/\u003E\u003Cbr \/\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u202f\u003Cbr \/\u003E\u003Cbr \/\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E.\u003Cbr \/\u003E\u003Cbr \/\u003EPlease see the\u202fHawai\u02bbi\u202fVolcanoes National Park website for visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E.\u202fVisitors to Hawai\u02bbi Volcanoes National Park should note that under southerly (non-trade) wind conditions, there is potential for a dusting of powdery to gritty ash composed of volcanic glass and rock fragments. These ashfalls represent a minor hazard, but visitors should be aware that such dustings at areas around the\u202fK\u012blauea\u202fsummit are possible.\u202f\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea updates will continue to be issued daily. Should volcanic activity change significantly, a new VAN will be issued. Regularly scheduled updates are posted on the HVO website at \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003E \u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"K\u012blauea summit eruption in Halema\u2018uma\u2018u; status upgrade to RED\/WARNING. ","sentUtc":"2023-06-07","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2023-04-29T11:28:43-07:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2023-04-29T11:28:43-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2023-04-29T11:28:43-07:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230607\/1314Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/H146\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea volcano is not erupting. Increased earthquake activity and changes in the patterns of ground deformation at K\u012blauea’s\u202fsummit began occurring the evening of June 6, 2023, indicating movement of magma in the subsurface.\u003Cbr \/\u003E\u003Cbr \/\u003EThe USGS Hawaiian Volcano Observatory is raising the volcano alert level\/aviation color code for K\u012blauea from ADVISORY\/YELLOW to WATCH\/ORANGE due to this activity.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAt this time, it is not possible to say with certainty if this activity will lead to an eruption; the activity may remain below ground. However, an eruption in K\u012blauea’s summit region, within Hawai‘i Volcanoes National Park and away from infrastructure, is one potential outcome. Based on patterns of earthquake activity and ground deformation, it is likely that any new eruptive activity will occur in Halema\u02bbuma\u02bbu crater, within the closed area of Hawai\u02bbi Volcanoes National Park. \u003Cbr \/\u003E\u003Cbr \/\u003EHVO will continue to monitor this activity closely and adjust the alert level accordingly.\u003Cbr \/\u003E\u003Cbr \/\u003EHVO is in constant communication with Hawai‘i Volcanoes National Park as this situation evolves. The activity is confined entirely within the park.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPlease see the\u202fHawai\u02bbi\u202fVolcanoes National Park website for visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E.\u202f\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea summit eruptive activity over the past several years has occurred at the base of Halema\u02bbuma\u02bbu crater, within the closed area of Hawai\u02bbi Volcanoes National Park. During K\u012blauea summit eruptions, the high level of volcanic gas—primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)—being emitted is the primary hazard of concern, as this hazard can have far-reaching effects downwind. Passive volcanic degassing can occur from within Halema\u02bbuma\u02bbu crater even during periods of no eruptive activity. As SO\u003Csub\u003E2\u003C\/sub\u003E is released from the summit, it reacts in the atmosphere to create the visible haze known as vog (volcanic smog) that has been observed downwind of K\u012blauea. Vog creates the potential for airborne health hazards to residents and visitors, damages agricultural crops and other plants, and affects livestock.\u202fFor more information on gas hazards at the summit of\u202fK\u012blauea, please see:\u202f\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/pubs.er.usgs.gov\/publication\/fs20173017\u0022\u003Ehttps:\/\/pubs.er.usgs.gov\/publication\/fs20173017\u003C\/a\u003E. Vog\u202finformation can be found at\u202f\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/gcc02.safelinks.protection.outlook.com\/?url=https%3A%2F%2Fvog.ivhhn.org%2F&data=05%7C01%7Cjschmith%40usgs.gov%7C427d46609bdc4ead4ded08dadc775c75%7C0693b5ba4b184d7b9341f32f400a5494%7C0%7C0%7C638064702452595397%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=6W1jNCk%2BzJ1xjuSnsXCxWjeJPiLXhxNmQtAGtuPzryM%3D&reserved=0\u0022\u003Ehttps:\/\/vog.ivhhn.org\u003C\/a\u003E.\u202f \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EOther significant hazards also remain around\u202fK\u012blauea caldera from Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fthe rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since early 2008.\u202f  \u003Cbr \/\u003E \u003Cbr \/\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E. \u003Cbr \/\u003E \u003Cbr \/\u003EThe Hawaiian Volcano Observatory (HVO) continues to closely monitor K\u012blauea Volcano. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cbr \/\u003E \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea updates will continue to be issued daily. Should volcanic activity change significantly a new VAN will be issued. Regularly scheduled updates are posted on the HVO website at \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003E \u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"K\u012blauea summit elevated unrest; status upgrade to ORANGE\/WATCH. ","sentUtc":"2023-06-07","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2023-04-13T12:48:14-07:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2023-04-13T12:48:14-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2023-04-13T12:48:14-07:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230606\/0343Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EIliamna (VNUM #313020)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A816\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 60 deg 1 min W 153 deg 5 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ECook Inlet-South Central\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E10016 ft (3053 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EPreviously reported earthquake activity culminated in an ice-rock avalanche slightly before 5:14 pm AKDT this evening (1:14 June 6, 2023 UTC). Although we lack visual confirmation at this time, the seismic signals recorded match historic observations of avalanches associated with Red Glacier on Iliamna Volcano’s eastern flank. Seismicity has since declined to background levels. The Aviation Color Code and Volcano Alert Level is therefore being lowered to GREEN and NORMAL.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENA\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EIliamna Volcano is located on the western side of lower Cook Inlet in the Lake Clark National Park. Iliamna is a snow-covered stratovolcano which rises 10,020 feet above sea level. Although steam plumes occur on its eastern flanks, there has been no historic volcanic activity at Iliamna. Iliamna is located 225 km (140 miles) southwest of Anchorage and 113 km (70 miles) southwest of Homer.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAaron Wech, Acting Scientist-in-Charge, USGS awech@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003Ehttp:\/\/www.avo.alaska.edu\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Ice-rock avalanche signal observed in seismic data. Seismicity has returned to background. ","sentUtc":"2023-06-06","obs":"avo","vName":"Iliamna","vnum":"313020","noticeId":"DOI-USGS-AVO-2023-06-05T19:12:27-08:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-06-05T19:12:27-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-06-05T19:12:27-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230606\/0053Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EIliamna (VNUM #313020)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EGREEN\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A815\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 60 deg 1 min W 153 deg 5 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ECook Inlet-South Central\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E10016 ft (3053 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EAn increase in seismicity has been observed at Iliamna volcano beginning at about 12:00 pm AKDT June 5, 2023 (20:00 UTC). The rate of earthquakes initially occurred in 1 minute intervals and have been becoming more closely spaced. There is a possibility that the earthquakes may be related to magmatic movement or hydrothermal fluids beneath the volcano. However, similar activity has been observed before large mass movements or avalanches at Iliamna volcano, and AVO cannot rule out either possibility at this time.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDue to the seismicity at Iliamna being above background levels the Aviation Color Code and Volcano Alert level for Iliamna are being raised to YELLOW and ADVISORY.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENA\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EIliamna volcano is located on the western side of lower Cook Inlet in the Lake Clark National Park. Iliamna is a snow-covered stratovolcano which rises 10,020 feet above sea level. Although steam plumes occur on its eastern flanks, there has been no historic volcanic activity at Iliamna. Iliamna is located 225 km (140 miles) southwest of Anchorage and 113 km (70 miles) southwest of Homer.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAaron Wech, Acting Scientist-in-Charge, USGS awech@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003Ehttp:\/\/www.avo.alaska.edu\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Increase in seismciity observed.  ","sentUtc":"2023-06-06","obs":"avo","vName":"Iliamna","vnum":"313020","noticeId":"DOI-USGS-AVO-2023-06-05T16:34:50-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-06-05T16:34:50-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-06-05T16:34:50-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230522\/2039Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAhyi Seamount (VNUM #284141)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUNASSIGNED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EU.S. Geological Survey\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/N124\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 20 deg 25 min E 145 deg 1 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENorthern Mariana Islands\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E-449 ft (-137 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003ESignals consistent with eruptive activity at Ahyi seamount began to be observed in underwater pressure sensors at Wake Island beginning on May 21, 2023, at about 10:10 PM ChST (12:10 PM UTC) and are continuing. A plume of discolored sea water was observed above the area of the previously active vent in a satellite image on May 22, 2023, at 10:43 AM ChST (00:43 UTC). Due to this renewed activity at Ahyi Seamount The Aviation Color Code and Volcano Alert Level are being raised to YELLOW\/ADVISORY. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EStarting mid-October 2022, hydroacoustic sensors at Wake Island, 1,410 miles (2,270 km) east of Ahyi, began recording signals consistent with activity from an undersea volcanic source. In collaboration with the Laboratoire de Geophysique in Tahiti, a combined analysis of the hydroacoustic signals and data from seismic stations located at Guam and Chichijima Island, Japan, confirmed that the source of this activity was at or near Ahyi seamount.  Observations of discolored water above the seamount in satellite data confirmed activity at Ahyi. The activity appears to have paused beginning in early April but has now resumed.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENo volcanic cloud produced\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAhyi seamount is a large conical submarine volcano that rises to within 450 ft (137 m) of the sea surface about 11 miles (18 km) southeast of Farallon de Pajaros (Uracas) Island in the northern Marianas, about 370 miles (600 km) north of the island of Saipan. In the past, discolored water has been observed over the submarine volcano. In 1979, the crew of a fishing boat felt shocks over the summit area and then observed upwelling of sulfur-bearing water. On April 24-25, 2001 an explosive submarine eruption was detected seismically from a seismic station on Rangiroa Atoll, Tuamotu Archipelago. The event was well constrained (+\/- 9 miles or 15 km) at a location near the southern base of Ahyi.\u003Cbr \/\u003E \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ECNMI Homeland Security and Emergency Management\u003Cbr \/\u003Ehttp:\/\/www.cnmihsem.gov.mp\/\u003Cbr \/\u003E\u003Cbr \/\u003EUSGS Northern Mariana Duty Scientist (907) 786-7497\u003Cbr \/\u003Ehttp:\/\/volcano.wr.usgs.gov\/cnmistatus.php\u003Cbr \/\u003E\u003Cbr \/\u003ESatellite information, Washington VAAC\u003Cbr \/\u003Ehttp:\/\/www.ssd.noaa.gov\/VAAC\/washington.html\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Underwater pressure signals and visible plume of discolored water indicate renewed eruptive activity. Code and Alert level raised to YELLOW\/ADVISORY.","sentUtc":"2023-05-22","obs":"nmi","vName":"Ahyi Seamount","vnum":"284141","noticeId":"DOI-USGS-NMI-2023-05-21T11:49:26-07:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2023-05-21T11:49:26-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2023-05-21T11:49:26-07:00","nvewsThreat":"Very Low Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230517\/2125Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESemisopochnoi (VNUM #311060)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A694\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2625 ft (800 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe level of eruptive activity at Semisopochnoi has declined in the past week. The last evidence of ash emissions from the volcano was observed on May 5 and consisted of a light dusting of ash on the northwest flank of Mount Young. The Aviation Color Code and Volcano Alert Level are being lowered to YELLOW\/ADVISORY.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESmall eruptions producing minor ash deposits within the vicinity of the active north crater of Mount Young and ash clouds usually under 10,000 ft (3 km) above sea level have characterized the recent activity and more ash-producing events could occur again with little warning.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESemisopochnoi is monitored by a local seismic and infrasound network, local web cameras, regional lightning and infrasound sensors, and satellite data. \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENA\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERemote Semisopochnoi volcano occupies the largest, young volcanic island in the western Aleutians. The uninhabited island is part of the Alaska Maritime National Wildlife Refuge. It is located 65 km (40 mi) northeast of Amchitka Island and 200 km (130 mi) west of Adak, Alaska. Semisopochnoi volcano is dominated by an 8-km (5-mile) diameter caldera that contains a small lake and several post-caldera cones and craters. The age of the caldera is not known with certainty but is likely early Holocene. The north cone of Mount Young, in the southwest part of the caldera, is the site of the current eruption, which began in 2018. The last known eruption prior to 2018 was in 1987 from Sugarloaf Peak on the south coast of the island.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS mcoombs@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at \u003Ca href=\u0022http:\/\/www.avo.alaska.edu\u0022\u003Ehttp:\/\/www.avo.alaska.edu\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Eruptive activity has declined. Aviation Color Code and Volcano Alert Level lowered to YELLOW\/ADVISORY.  ","sentUtc":"2023-05-17","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2023-05-17T09:32:50-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-05-17T09:32:50-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-05-17T09:32:50-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230425\/2104Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAhyi Seamount (VNUM #284141)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EU.S. Geological Survey\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/N119\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 20 deg 25 min E 145 deg 1 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENorthern Mariana Islands\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E-449 ft (-137 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003ESigns of unrest at Ahyi Seamount have diminished and nothing indicative of submarine volcanic activity has occurred for at least four weeks. Hydroacoustic detection of underwater volcanic activity has been negligible since early April 2023 and satellite observations of discolored water near the seamount were last noted in late March 2023. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EStarting mid-October 2022, hydroacoustic sensors at Wake Island, 2,270 km (1,410 miles) east of Ahyi, began recording signals consistent with activity from an undersea volcanic source. In collaboration with the Laboratoire de Geophysique in Tahiti, a combined analysis of the hydroacoustic signals and data from seismic stations located at Guam and Chichijima Island, Japan, confirmed that the source of this activity was at or near Ahyi seamount. Hydrophone signals indicative of submarine volcanic activity are no longer detected.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDue to the apparent abscence of activity, the aviation color code is being lowered from YELLOW to UNASSIGNED and the alert level is being lowered from ADVISORY to UNASSIGNED. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENo volcanic cloud produced\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EWater discoloration no longer observed above seamount in satellite images\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAhyi seamount is a large conical submarine volcano that rises to within 137 m (450 ft) of the sea surface about 18 km (11 mi) southeast of Farallon de Pajaros (Uracas) Island in the northern Marianas, about 600 km (370 mi) north of the island of Saipan. In the past, discolored water has been observed over the submarine volcano. In 1979, the crew of a fishing boat felt shocks over the summit area and then observed upwelling of sulfur-bearing water. On April 24-25, 2001 an explosive submarine eruption was detected seismically from a seismic station on Rangiroa Atoll, Tuamotu Archipelago. The event was well constrained (+\/- 15 km or 9 miles) at a location near the southern base of Ahyi.\u003Cbr \/\u003E \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ECNMI Homeland Security and Emergency Management\u003Cbr \/\u003Ehttp:\/\/www.cnmihsem.gov.mp\/\u003Cbr \/\u003E\u003Cbr \/\u003EUSGS Northern Mariana Duty Scientist (907) 786-7497\u003Cbr \/\u003Ehttp:\/\/volcano.wr.usgs.gov\/cnmistatus.php\u003Cbr \/\u003E\u003Cbr \/\u003ESatellite information, Washington VAAC\u003Cbr \/\u003Ehttp:\/\/www.ssd.noaa.gov\/VAAC\/washington.html\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Unrest at Ahyi seamount appears over.","sentUtc":"2023-04-25","obs":"nmi","vName":"Ahyi Seamount","vnum":"284141","noticeId":"DOI-USGS-NMI-2023-04-25T11:13:59-08:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2023-04-25T11:13:59-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2023-04-25T11:13:59-08:00","nvewsThreat":"Very Low Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230321\/1836Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/H115\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea is no longer erupting. Lava supply to the Halema\u02bbuma\u02bbu lava lake ceased on March 7 based upon lava lake levels and behavior of the crater floor. Sulfur dioxide emissions have decreased to near pre-eruption background levels.   \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAccordingly, the USGS Hawaiian Volcano Observatory (HVO) is lowering the Volcano Alert Level for ground-based hazards from WATCH to ADVISORY and the Aviation Color Code from ORANGE to YELLOW.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESeismicity and deformation patterns remain unsettled. Resumption of eruptive activity may occur in the near future with little or no warning. Potential remains for resumption of this eruption or initiation of a new eruption at or near the summit of K\u012blauea. \u003Cbr \/\u003E \u003Cbr \/\u003EHVO continues to closely monitor K\u012blauea for signs of renewed activity. Should volcanic activity change significantly, a new Volcanic Activity Notice will be issued. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHazards are still present on K\u012blauea and are described below. Residents and visitors should stay informed and follow County of Hawai‘i and Hawai\u02bbi Volcanoes National Park guidelines. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor more information about the meaning of aviation color codes, see \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u0022\u003Ehttps:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u003C\/a\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ELevels of volcanic gas (sulfur dioxide and carbon dioxide) can remain locally hazardous even though K\u012blauea is no longer erupting. Sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E) gas emissions have greatly decreased; however, local concentrations of sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E) or hydrogen sulfide (H\u003Csub\u003E2\u003C\/sub\u003ES) may persist in downwind areas, and residents may notice odors of these gases occasionally. Significant hazards also remain around Halema\u02bbuma\u02bbu from crater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPlease\u202fsee the\u202fHawai\u02bbi\u202fVolcanoes National Park website for visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E.\u202f\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cbr \/\u003E \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea updates will now be issued weekly on Tuesdays. Should volcanic activity change significantly, a new VAN will be issued. Regularly scheduled updates are posted on the HVO website at \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003E \u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"K\u012blauea summit eruption in Halema\u2018uma\u2018u has stopped; status downgrade to YELLOW\/ADVISORY. ","sentUtc":"2023-03-21","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2023-03-21T11:00:01-07:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2023-03-21T11:00:01-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2023-03-21T11:00:01-07:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230319\/2047Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESemisopochnoi (VNUM #311060)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A340\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2625 ft (800 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003ELow-level ash emissions from the north crater of Mount Young at Semisopochnoi were observed in several web camera images over the past day. In addition, small explosions and volcanic tremor have resumed during the same time period. Ash emissions have not been detected in satellite data, although a vapor plume extending 150 km (90 miles) from Mount Young was observed yesterday in satellite data. This activity is similar to eruptive activity observed intermittently over the last few years at Semisopochnoi. The Aviation Color Code and Volcano Alert Level are being raised to ORANGE\/WATCH.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESmall eruptions producing minor ash deposits within the vicinity of the active north crater of Mount Cerberus and ash clouds usually under 10,000 ft (3 km) above sea level have characterized the recent activity and more ash-producing events could occur again with little warning.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESemisopochnoi is monitored by a local seismic and infrasound network, local web cameras, regional lightning and infrasound sensors, and satellite data. \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E3000 ft\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Eash\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERemote Semisopochnoi volcano occupies the largest, young volcanic island in the western Aleutians. The uninhabited island is part of the Alaska Maritime National Wildlife Refuge. It is located 65 km (40 mi) northeast of Amchitka Island and 200 km (130 mi) west of Adak, Alaska. Semisopochnoi volcano is dominated by an 8-km (5-mile) diameter caldera that contains a small lake and several post-caldera cones and craters. The age of the caldera is not known with certainty but is likely early Holocene. The north cone of Mount Young, in the southwest part of the caldera, is the site of the current eruption, which began in 2018. The last known eruption prior to 2018 was in 1987 from Sugarloaf Peak on the south coast of the island.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS mcoombs@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at \u003Ca href=\u0022http:\/\/www.avo.alaska.edu\u0022\u003Ehttp:\/\/www.avo.alaska.edu\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Low-level ash emissions in web camera; small explosions and seismic unrest. Aviation Color Code and Volcano Alert Level raised to ORANGE\/WATCH ","sentUtc":"2023-03-19","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2023-03-19T12:37:42-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-03-19T12:37:42-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-03-19T12:37:42-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230316\/1932Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EMauna Loa (VNUM #332020)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/H109\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 28 min W 155 deg 36 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E13681 ft (4170 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EMauna Loa has been quiet for the past three months since the eruption ended on December 13, 2022.   The number of earthquakes beneath Mauna Loa's summit has returned to background levels.  Inflation of Mauna Loa continues as magma replenishes the summit magma chamber.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAccordingly, the USGS Hawaiian Volcano Observatory (HVO) is lowering the Volcano Alert Level for ground-based hazards from ADVISORY to NORMAL and the Aviation Color Code from YELLOW to GREEN. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EIn conjunction with this change, Mauna Loa updates will change from weekly to monthly, with the next monthly update on April 6, 2023.\u003Cbr \/\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor more information about the meaning of aviation color codes, see \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u0022\u003Ehttps:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u003C\/a\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO continues to closely monitor Mauna Loa for signs of renewed activity. Should volcanic activity change significantly a new Volcanic Activity Notice will be issued immediately. \u003Cbr \/\u003E \u003Cbr \/\u003EResidents and visitors should stay informed and follow County of Hawai‘i and Hawai\u02bbi Volcanoes National Park guidelines. \u003C\/p\u003E\u003Cul\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMauna Loa monthly updates issued monthly on Thursdays beginning April 6, 2023. Should volcanic activity change significantly a new VAN will be issued. Regularly scheduled updates on the status of Mauna Loa will be posted on the HVO website at \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EMauna Loa activity summary also available by phone: (808) 967-8866\u003C\/li\u003E\u003Cli\u003EMauna Loa webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EMauna Loa Hazards: \u003Ca href=\u0022https:\/\/pubs.usgs.gov\/fs\/2012\/3104\/\u0022\u003Ehttps:\/\/pubs.usgs.gov\/fs\/2012\/3104\/\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EMauna Loa photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/photo-and-video-chronology-mauna-loa\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/photo-and-video-chronology-mauna-loa\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EMauna Loa maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EMauna Loa FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/frequently-asked-questions-about-mauna-loa-volcano\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003ERecent Volcano Watch on Mauna Loa: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-mauna-loa-reawakens-0\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-mauna-loa-reawakens-0\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EMap-based webpage for Mauna Loa: \u003Ca href=\u0022https:\/\/geonarrative.usgs.gov\/maunaloa\/\u0022\u003Ehttps:\/\/geonarrative.usgs.gov\/maunaloa\/\u003C\/a\u003E       \u003C\/li\u003E\u003Cli\u003EAdditional Mauna Loa Resources: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/prepare-mauna-loa-resources\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/prepare-mauna-loa-resources\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Mauna Loa is not erupting and seismicity has returned to background levels. The YELLOW\/ADVISORY status is downgraded to GREEN\/NORMAL.\u202f","sentUtc":"2023-03-16","obs":"hvo","vName":"Mauna Loa","vnum":"332020","noticeId":"DOI-USGS-HVO-2023-03-16T10:51:57-07:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2023-03-16T10:51:57-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2023-03-16T10:51:57-07:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230316\/1840Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ETanaga (VNUM #311080)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A314\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 51 deg 53 min W 178 deg 8 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E5925 ft (1806 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEarthquake activity near Tanaga Volcano has decreased in both rate and magnitude from the peak of the swarm on March 9 – 11. The significant decline in earthquake activity decreases the potential for an eruption at the volcano. No other signs of unrest have been detected in other monitoring data. AVO is therefore lower the Aviation Color Code to Yellow and the Volcano Alert Level to ADVISORY. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESeismic activity has also declined at Takawangha volcano, which is about 8 km (5 miles) east of Tanaga Volcano on Tanaga Island. The Aviation Color Code\/Alert Level has also been lowered to YELLOW\/ADVISORY for Takawangha. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAVO continues to monitor the activity closely and seismic analysts are locating events as time permits. Earthquakes are occurring under Tanaga Island at a rate of up to several per minute. The largest event over the past 24 hours was a M3.1 located between Takawangha volcano and Tanaga Volcano.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ETanaga is monitored with a local seismic network, a single local infrasound sensor, regional infrasound and lightning sensors, and satellite imagery.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor current monitoring data: \u003Ca href=\u0022https:\/\/avo.alaska.edu\/activity\/Tanaga.php\u0022\u003Ehttps:\/\/avo.alaska.edu\/activity\/Tanaga.php\u003C\/a\u003E\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone observed\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone observed\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ETanaga Island lies in the Andreanof Islands approximately 100 km (62 miles) west of the community of Adak and 2025 km (1260 miles) SW of Anchorage. The northern half of the island is home to the Tanaga volcanic complex, comprising three main volcanic edifices. Tanaga Volcano is the tallest of these (1,806 m or 5,925 ft) and lies in the center of the complex. The last reported eruption of Tanaga occurred in 1914 and earlier eruptions were reported in 1763-1770, 1791, and 1829. Reports of these eruptions are vague, but deposits on the flanks of the volcano show that typical eruptions produce blocky lava flows and occasional ash clouds. Eruptions have occurred both from the summit vent and a 1,584 m (5,197 ft)-high satellite vent on the volcano's northeast flank. Immediately west of Tanaga volcano lies Sajaka, a 1,354 m (4,443 ft)-high compound edifice with an older cone to the east that collapsed into the sea within the last few thousand years, and a new cone that has grown in the breach. The new cone is 1,312 m (4,305 ft) high and consists of steeply dipping, interbedded cinders and thin, spatter-fed lava flows. To the east of Tanaga lies Takawangha, which is separated from the other active volcanic vents by a ridge of older rock. Takawangha's 1,449 m (4,754 ft)-high summit is mostly ice-covered, except for four young craters that have erupted ash and lava flows in the last few thousand years. Parts of Takawangha's edifice are hydrothermally altered and may be unstable, and could produce localized debris avalanches. No historical eruptions are known from Sajaka or Takawangha; however, field work shows that recent eruptions have occurred and it is possible that historic eruptions attributed only to Tanaga may instead have come from these other vents.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS mcoombs@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Earthquake activity decreasing and no other signs of unrest; likelihood of eruption declining.","sentUtc":"2023-03-16","obs":"avo","vName":"Tanaga","vnum":"311080","noticeId":"DOI-USGS-AVO-2023-03-16T10:08:01-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-03-16T10:08:01-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-03-16T10:08:01-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230316\/1839Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ETakawangha (VNUM #311090)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A315\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 51 deg 52 min W 178 deg 1 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4754 ft (1449 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEarthquake activity near Takawangha volcano has decreased in both rate and magnitude from the peak of the swarm on March 9 – 11. The significant decline in earthquake activity decreases the potential for an eruption at the volcano. No other signs of unrest have been detected in other monitoring data. AVO is therefore lower the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESeismic activity has also declined at Tanaga Volcano, which is about 8 km (5 miles) west of Takawangha on Tanaga Island. The Aviation Color Code\/Alert Level has also been lowered to YELLOW\/ADVISORY for Tanaga Volcano. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAVO continues to monitor the activity closely and seismic analysts are locating events as time permits. Earthquakes are occurring under Tanaga Island at a rate of up to several per minute. The largest event over the past 24 hours was a M3.1 located between Takawangha volcano and Tanaga Volcano. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ETakawangha is monitored with a local seismic network, a single local infrasound sensor, regional infrasound and lightning sensors, and satellite imagery.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor current monitoring data: \u003Ca href=\u0022https:\/\/avo.alaska.edu\/activity\/Takawangha.php\u0022\u003Ehttps:\/\/avo.alaska.edu\/activity\/Takawangha.php\u003C\/a\u003E\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone observed\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone observed\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ETakawangha is a remote, 1,449 m (4,754 ft)-high stratovolcano located on the northeast portion of Tanaga Island, roughly 95 km (59 miles) west of Adak in the Andreanof Islands. Takawangha's summit is mostly ice-covered, except for four young craters that have erupted ash and lava flows in the last few thousand years. Parts of Takawangha's edifice are hydrothermally altered and may be unstable, possibly leading to localized debris avalanches from its flanks. Takawangha lies across a saddle from historically active Tanaga volcano to the west. No historical eruptions are known from Takawangha; however, field work shows that recent eruptions have occurred, and it is possible that historic eruptions attributed to Tanaga may instead have come from Takawangha.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS mcoombs@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Earthquake activity decreasing and no other signs of unrest; likelihood of eruption declining.","sentUtc":"2023-03-16","obs":"avo","vName":"Takawangha","vnum":"311090","noticeId":"DOI-USGS-AVO-2023-03-16T10:11:29-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-03-16T10:11:29-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-03-16T10:11:29-08:00","nvewsThreat":"Low Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230310\/0222Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ETakawangha (VNUM #311090)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A225\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 51 deg 52 min W 178 deg 1 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4754 ft (1449 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EOver the past 48 hours, earthquake activity near Takawangha volcano has been elevated and continues. This sustained activity indicates an increased potential for eruption at the volcano. Therefore AVO is raising the Aviation Color Code to ORANGE and the Volcano Alert Level to WATCH.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESeismic activity is also elevated at Tanaga Volcano, which is about 8 km (5 miles) west of Takawangha on Tanaga Island. If an eruption were to occur, it is uncertain at this stage if it would come from Takawangha or Tanaga. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAVO analysts continue to monitor the situation closely, and locate events as time permits. Earthquakes are occurring under Tanaga Island at a rate of up to several per minute. The largest event over the past 24 hours was a M3.9 located under Tanaga Volcano. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo eruptive activity or signs of unrest have been detected in satellite or other monitoring data.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ETakawangha is monitored with a local seismic network, a single local infrasound sensor, regional infrasound and lightning sensors, and satellite imagery.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor current monitoring data: \u003Ca href=\u0022https:\/\/avo.alaska.edu\/activity\/Takawangha.php\u0022\u003Ehttps:\/\/avo.alaska.edu\/activity\/Takawangha.php\u003C\/a\u003E\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone observed\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone observed\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ETakawangha is a remote, 1,449 m (4,754 ft)-high stratovolcano located on the northeast portion of Tanaga Island, roughly 95 km (59 miles) west of Adak in the Andreanof Islands. Takawangha's summit is mostly ice-covered, except for four young craters that have erupted ash and lava flows in the last few thousand years. Parts of Takawangha's edifice are hydrothermally altered and may be unstable, possibly leading to localized debris avalanches from its flanks. Takawangha lies across a saddle from historically active Tanaga volcano to the west. No historical eruptions are known from Takawangha; however, field work shows that recent eruptions have occurred, and it is possible that historic eruptions attributed to Tanaga may instead have come from Takawangha.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS mcoombs@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 322-4085\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Earthquake activity increased over past 2 days and continues; likelihood of eruption increased.","sentUtc":"2023-03-10","obs":"avo","vName":"Takawangha","vnum":"311090","noticeId":"DOI-USGS-AVO-2023-02-28T20:20:13-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-02-28T20:20:13-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-02-28T20:20:13-09:00","nvewsThreat":"Low Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230310\/0219Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ETanaga (VNUM #311080)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A268\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 51 deg 53 min W 178 deg 8 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E5925 ft (1806 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EOver the past 48 hours, earthquake activity near Tanaga Volcano has been elevated and continues. This sustained activity indicates an increased potential for eruption at the volcano. Therefore AVO is raising the Aviation Color Code to ORANGE and the Volcano Alert Level to WATCH.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESeismic activity is also elevated at Takawangha volcano, which is about 8 km (5 miles) east of Tanaga on Tanaga Island. If an eruption were to occur, it is uncertain at this stage if it would come from Tanaga or Takawangha. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAVO analysts continue to monitor the situation closely, and locate events as time permits. Earthquakes are occurring under Tanaga Island at a rate of up to several per minute. The largest event over the past 24 hours was a M3.9 located under Tanaga Volcano. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo eruptive activity or signs of unrest have been detected in satellite or other monitoring data.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ETanaga is monitored with a local seismic network, a single local infrasound sensor, regional infrasound and lightning sensors, and satellite imagery.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor current monitoring data: \u003Ca href=\u0022https:\/\/avo.alaska.edu\/activity\/Tanaga.php\u0022\u003Ehttps:\/\/avo.alaska.edu\/activity\/Tanaga.php\u003C\/a\u003E\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone observed\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone observed\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ETanaga Island lies in the Andreanof Islands approximately 100 km (62 miles) west of the community of Adak and 2025 km (1260 miles) SW of Anchorage. The northern half of the island is home to the Tanaga volcanic complex, comprising three main volcanic edifices. Tanaga Volcano is the tallest of these (1,806 m or 5,925 ft) and lies in the center of the complex. The last reported eruption of Tanaga occurred in 1914 and earlier eruptions were reported in 1763-1770, 1791, and 1829. Reports of these eruptions are vague, but deposits on the flanks of the volcano show that typical eruptions produce blocky lava flows and occasional ash clouds. Eruptions have occurred both from the summit vent and a 1,584 m (5,197 ft)-high satellite vent on the volcano's northeast flank. Immediately west of Tanaga volcano lies Sajaka, a 1,354 m (4,443 ft)-high compound edifice with an older cone to the east that collapsed into the sea within the last few thousand years, and a new cone that has grown in the breach. The new cone is 1,312 m (4,305 ft) high and consists of steeply dipping, interbedded cinders and thin, spatter-fed lava flows. To the east of Tanaga lies Takawangha, which is separated from the other active volcanic vents by a ridge of older rock. Takawangha's 1,449 m (4,754 ft)-high summit is mostly ice-covered, except for four young craters that have erupted ash and lava flows in the last few thousand years. Parts of Takawangha's edifice are hydrothermally altered and may be unstable, and could produce localized debris avalanches. No historical eruptions are known from Sajaka or Takawangha; however, field work shows that recent eruptions have occurred and it is possible that historic eruptions attributed only to Tanaga may instead have come from these other vents.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS mcoombs@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Earthquake activity increased over past 2 days and continues; likelihood of eruption increased.","sentUtc":"2023-03-10","obs":"avo","vName":"Tanaga","vnum":"311080","noticeId":"DOI-USGS-AVO-2023-03-08T18:41:48-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-03-08T18:41:48-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-03-08T18:41:48-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230308\/0715Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ETanaga (VNUM #311080)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EGREEN\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A266\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 51 deg 53 min W 178 deg 8 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E5925 ft (1806 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEarthquake activity beneath Tanaga Volcano began to increase slowly starting at about 1:30 PM AKST today.  At roughly 8:45 PM AKST this evening, the activity escalated with earthquakes occurring as often as 2 or 3 each minute.  Initial locations of these earthquakes place them at shallow depths beneath the summit of Tanaga Volcano, and the largest of these earthquakes have magnitudes between 2 and 3. In response to this increase in seismicity, we are raising the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.\u003Cbr \/\u003E\u003Cbr \/\u003ETanaga Volcano is monitored with a local seismic and infrasound network, regional infrasound and lightning detection networks, and satellite data.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ETanaga Island lies in the Andreanof Islands approximately 100 km (62 miles) west of the community of Adak and 2025 km (1260 miles) SW of Anchorage. The northern half of the island is home to the Tanaga volcanic complex, comprising three main volcanic edifices. Tanaga Volcano is the tallest of these (1,806 m or 5,925 ft) and lies in the center of the complex. The last reported eruption of Tanaga occurred in 1914 and earlier eruptions were reported in 1763-1770, 1791, and 1829. Reports of these eruptions are vague, but deposits on the flanks of the volcano show that typical eruptions produce blocky lava flows and occasional ash clouds. Eruptions have occurred both from the summit vent and a 1,584 m (5,197 ft)-high satellite vent on the volcano's northeast flank. Immediately west of Tanaga volcano lies Sajaka, a 1,354 m (4,443 ft)-high compound edifice with an older cone to the east that collapsed into the sea within the last few thousand years, and a new cone that has grown in the breach. The new cone is 1,312 m (4,305 ft) high and consists of steeply dipping, interbedded cinders and thin, spatter-fed lava flows. To the east of Tanaga lies Takawangha, which is separated from the other active volcanic vents by a ridge of older rock. Takawangha's 1,449 m (4,754 ft)-high summit is mostly ice-covered, except for four young craters that have erupted ash and lava flows in the last few thousand years. Parts of Takawangha's edifice are hydrothermally altered and may be unstable, and could produce localized debris avalanches. No historical eruptions are known from Sajaka or Takawangha; however, field work shows that recent eruptions have occurred and it is possible that historic eruptions attributed only to Tanaga may instead have come from these other vents.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS mcoombs@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 322-4085\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Seismic swarm beneath the volcano.","sentUtc":"2023-03-08","obs":"avo","vName":"Tanaga","vnum":"311080","noticeId":"DOI-USGS-AVO-2023-03-07T22:33:33-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-03-07T22:33:33-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-03-07T22:33:33-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230223\/0143Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAniakchak (VNUM #312090)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EGREEN\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A192\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 56 deg 54 min W 158 deg 12 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Peninsula\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4400 ft (1341 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe number of earthquakes beneath Aniakchak volcano has recently increased and shifted to shallower depths. Due to this increase in seismic activity to above-background levels, the Alaska Volcano Observatory is raising the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.  There have been no signs of unrest in other monitoring data. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBackground seismicity at Aniakchak has mostly been characterized by deep (>15 km or 9.3 miles), long-period events occurring at a rate of ~4 earthquakes per month. From October 2022 to present, the rate of earthquakes has been more elevated and characterized by shallower earthquakes at depths less than 9 km (5.6 miles) below sea level. The earthquake rate has further increased since January 31 with dozens of earthquakes detected per day, including a M3.7 earthquake on February 17. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThere is no indication that an eruption of Aniakchak is imminent, or that one will occur. Increases in seismic activity have been detected previously at other similar volcanoes, with no subsequent eruptions. We expect additional shallow seismicity and other signs of unrest, such as gas emissions, elevated surface temperatures, and surface deformation to precede any future eruption, if one were to occur. Should activity increase, AVO will issue further notices.   \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAVO monitors Aniakchak with a local network, which consists of six seismometers, a web camera, and a single infrasound sensor, as well as satellite remote sensing data and regional infrasound and lightning networks. To view current monitoring data, see \u003Ca href=\u0022https:\/\/avo.alaska.edu\/activity\/Aniakchak.php\u0022\u003Ehttps:\/\/avo.alaska.edu\/activity\/Aniakchak.php\u003C\/a\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAniakchak volcano, located in the central portion of the Alaska Peninsula, consists of a stratovolcano edifice with a 10 km (6 mile) diameter summit caldera. The caldera-forming eruption occurred around 3,500 years ago. Postcaldera eruptions have produced lava domes, tuff cones, and larger spatter and scoria cone structures including Half-Cone and Vent Mountain all within the caldera. The most recent eruption occurred in 1931 and created a new vent and lava flows on the western caldera floor while spreading ash over much of southwestern Alaska. Aniakchak volcano is 25 km (15 miles) southeast of the nearest community, Port Heiden, and 670 km (416 miles) southwest of Anchorage, Alaska. \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS mcoombs@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ETársilo Girona, Acting Coordinating Scientist, UAFGI tarsilo.girona@alaska.edu (907) 322-4085\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/gcc02.safelinks.protection.outlook.com\/?url=http%3A%2F%2Fwww.avo.alaska.edu%2F&data=05%7C01%7Chdietterich%40usgs.gov%7C4e428a02cf274911103408db150551b8%7C0693b5ba4b184d7b9341f32f400a5494%7C0%7C0%7C638126884815330179%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=mrKsTvh8yVAs%2FbGq6tQapOq6Q773zJjI9UTvyFMD7YE%3D&reserved=0\u0022\u003Ehttp:\/\/www.avo.alaska.edu\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Earthquake activity beneath Aniakchak volcano has increased; Aviation Color Code and Volcano Alert Level raised to YELLOW\/ADVISORY","sentUtc":"2023-02-23","obs":"avo","vName":"Aniakchak","vnum":"312090","noticeId":"DOI-USGS-AVO-2023-02-22T13:05:43-09:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-02-22T13:05:43-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-02-22T13:05:43-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230222\/1847Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ETrident (VNUM #312160)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EGREEN\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A184\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 58 deg 14 min W 155 deg 6 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Peninsula\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E3599 ft (1097 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEarthquake activity beneath Trident Volcano has recently increased and is ongoing, although there have been no signs of unrest in other monitoring data. Due to this increase in seismic activity to above-background levels, the Alaska Volcano Observatory is raising the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe current period of seismic unrest, or earthquake swarm, began on August 24, 2022. Earthquake depths at the beginning of the swarm were mostly deep, around 25 km (16 miles) below sea level, and became progressively shallower to around 5 km (3 miles) over the following four days. Since late August 2022, most earthquakes have been located in the shallow crust, with depths less than 6 km below sea level. Since January 1, 2023, earthquakes under Trident are occurring at an average rate of about ten per day. The largest event since August was a M4.6 quake on November 20, but most earthquakes are much smaller. A few episodes of weak seismic tremor and low frequency earthquakes have also occurred.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EWithin the Katmai group of volcanoes, earthquakes are typically clustered in three regions: under Trident Volcano, under Mount Katmai to the east, and under Martin and Mageik volcanoes to the west. The current period of seismic unrest is most prominent in the area under Trident, but the rate of earthquakes has also increased in the region beneath Martin and Mageik volcanoes. Because of the initial sequence of deep earthquakes and continued episodes of tremor under Trident, it is most likely, though not certain, that the unrest observed in the area is due to movement of magma or magmatic fluids at depth there. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThere is no indication that an eruption of Trident is imminent, or that one will occur. Increases in seismic activity have been detected previously at Trident and other similar volcanoes, with no subsequent eruptions. We expect additional shallow seismicity and other signs of unrest, such as gas emissions, elevated surface temperatures, and surface deformation to precede any future eruption, if one were to occur. Should activity increase, AVO will issue further notices.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAVO monitors Trident with a local network of seismometers, a webcam, remote sensing data, and regional infrasound and lightning networks. To view current monitoring data, see \u003Ca href=\u0022https:\/\/avo.alaska.edu\/activity\/Trident.php\u0022\u003Ehttps:\/\/avo.alaska.edu\/activity\/Trident.php\u003C\/a\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ETrident Volcano is one of the Katmai group of volcanoes located within Katmai National Park and Preserve on the Alaska Peninsula. Trident consists of a complex of four cones and numerous lava domes, all andesite and dacite in composition, that reach as high as 6,115 ft above sea level. An eruption beginning in 1953 constructed the newest cone, Southwest Trident, and four lava flows on the flank of the older complex. This eruption continued through 1974 and produced ash (an initial plume rose to 30,000 ft asl), bombs, and lava at various times. Fumaroles remain active on the summit of Southwest Trident and on the southeast flank of the oldest, central cone. Trident is located 148 km (92 miles) southeast of King Salmon and 440 km (273 miles) southwest of Anchorage.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS mcoombs@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ETársilo Girona, Acting Coordinating Scientist, UAFGI tarsilo.girona@alaska.edu (907) 322-4085\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at \u003Ca href=\u0022http:\/\/www.avo.alaska.edu\u0022\u003Ehttp:\/\/www.avo.alaska.edu\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Seismicity beneath Trident Volcano has increased; Aviation Color Code and Volcano Alert Level raised to YELLOW\/ADVISORY","sentUtc":"2023-02-22","obs":"avo","vName":"Trident","vnum":"312160","noticeId":"DOI-USGS-AVO-2023-02-21T07:56:14-09:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-02-21T07:56:14-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-02-21T07:56:14-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230222\/1847Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESemisopochnoi (VNUM #311060)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A188\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2625 ft (800 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EAlthough the active north cone of Mount Young continues to produce a robust steam plume, no ash emissions or explosive activity have been detected at Semisopochnoi volcano since late January. The level of seismic activity has also decreased, with no significant seismic tremor observed since January 25th. Thus, we are lowering the Aviation Color Code to YELLOW and Volcano Alert Level to ADVISORY.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESmall eruptions producing minor ash deposits within the vicinity of the active north crater of Mount Young, and ash clouds usually under 10,000 ft (3 km) above sea level, have characterized the recent activity at Semisopochnoi. More ash-producing events could occur again with little warning.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESemisopochnoi is monitored by a local seismic and infrasound network, local web cameras, regional lightning and infrasound sensors, and satellite data.  \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESteam only\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERemote Semisopochnoi volcano occupies the largest, young volcanic island in the western Aleutians. The uninhabited island is part of the Alaska Maritime National Wildlife Refuge. It is located 65 km (40 mi) northeast of Amchitka Island and 200 km (130 mi) west of Adak, Alaska. Semisopochnoi volcano is dominated by an 8-km (5-mile) diameter caldera that contains a small lake and several post-caldera cones and craters. The age of the caldera is not known with certainty but is likely early Holocene. The north cone of Mount Young, in the southwest part of the caldera, is the site of the current eruption, which began in 2018. The last known eruption prior to 2018 was in 1987 from Sugarloaf Peak on the south coast of the island.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS mcoombs@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ETársilo Girona, Acting Coordinating Scientist, UAFGI tarsilo.girona@alaska.edu (907) 322-4085\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at \u003Ca href=\u0022http:\/\/www.avo.alaska.edu\u0022\u003Ehttp:\/\/www.avo.alaska.edu\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"No ash emissions since January and declining seismicity. Aviation Color Code and Volcano Alert Level lowered to YELLOW\/ADVISORY","sentUtc":"2023-02-22","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2023-02-21T21:49:17-09:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-02-21T21:49:17-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-02-21T21:49:17-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230119\/2051Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EPavlof (VNUM #312030)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A84\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Peninsula\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E8261 ft (2518 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEruptive activity at Pavlof Volcano has stopped. Seismicity has decreased to background levels, and no explosions have been detected since December 11, 2022.  Weakly elevated surface temperatures and minor steaming from the recently active vent continue to be observed intermittently in satellite and web camera imagery, consistent with cooling of previously erupted lava. Due to the decrease in activity to background levels, we are lowering the Aviation Color Code to Green and the Volcano Alert Level to Normal.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPrevious eruptions of Pavlof indicate that the level of unrest can change quickly and eruptive activity could resume with little or no warning.\u202fPavlof is monitored by local seismic and infrasound sensors, satellite data, web cameras, and regional infrasound and lightning networks. \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPavlof Volcano is a snow- and ice-covered stratovolcano located on the southwestern end of the Alaska Peninsula about 953 km (592 mi) southwest of Anchorage. The volcano is about 7 km (4.4 mi) in diameter and has active vents on the north and east sides close to the summit. With over 40 historic eruptions, it is one of the most consistently active volcanoes in the Aleutian arc. Eruptive activity is generally characterized by sporadic Strombolian lava fountaining continuing for a several-month period. Ash plumes as high as 49,000 ft ASL have been generated by past eruptions of Pavlof, and during the March 2016 eruption, ash plumes as high as 40,000 feet above sea level were generated and the ash was tracked in satellite data as distant as eastern Canada. The nearest community, Cold Bay, is located 60 km (37 miles) to the southwest of Pavlof.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS mcoombs@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"No eruptive activity since December 11. Monitoring data are at background levels. Aviation Color Code and Volcano Alert Level lowered to GREEN\/NORMAL.","sentUtc":"2023-01-19","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2023-01-19T10:04:24-09:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-01-19T10:04:24-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-01-19T10:04:24-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230106\/1815Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ERED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/H16\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea’s summit eruption continues and is confined to\u202fHalema\u02bbuma\u02bbu\u202fcrater within\u202fHawai‘i Volcanoes National Park.\u202f\u202fHVO does not see any indication of activity migrating elsewhere on K\u012blauea volcano and expects the eruption to remain confined to\u202fthe summit region. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO\u202fis\u202flowering\u202fK\u012blauea’s\u202fvolcano alert level from WARNING to WATCH because the initial high effusion rates are declining, and no infrastructure is threatened. HVO\u202fis\u202flowering\u202fK\u012blauea’s aviation color code from RED to ORANGE because there is currently no threat of significant volcanic ash emission into the atmosphere outside of the hazardous closed area within\u202fHawai‘i Volcanoes National Park. Hazards associated with the eruption are limited and are described below. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO will continue to monitor this activity closely and report any significant changes in future notices. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea\u202fvolcano began erupting within Halema‘uma‘u crater at approximately 4:34 p.m. HST on January 5, 2023, following a couple weeks of intermittently elevated summit earthquake activity and gradual inflationary summit ground tilt. Earthquake activity increased dramatically at approximately 3 p.m. on January 5 with increased rates of inflationary ground deformation, prompting HVO to raise K\u012blauea’s alert level and aviation color code to WATCH\/ORANGE and then to WARNING\/RED after the eruption began. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAs of 7:30 a.m. HST this morning, January 6, several very minor fountains remain active in the central eastern portion of Halema‘uma‘u crater floor. The high initial effusion rates are declining rapidly as lava stored within the magma system over the past month is erupted.  The fountains decreased in vigor overnight and are consistently about 5 meters (16 feet) high this morning. Lava flows have inundated much of the crater floor (which is nearly 300 acres or 120 hectares). The higher-elevation island that formed during the initial phase of the December 2020 eruption remains exposed, as well as a ring of older lava around the lava lake that was active prior to December 2022. This older lake has refilled from below with new lava. This morning, the depth of new lava remains at about 10 meters (32 feet) at the base of Halema‘uma‘u crater. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESummit tilt switched from inflation to deflation around 5 p.m. HST yesterday, January 5, and that trend continues this morning. Following the eruption onset, summit earthquake activity greatly diminished and eruptive tremor (a signal associated with fluid movement) resumed. Volcanic gas emissions in the eruption area are elevated. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazard Analysis:\u202f\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe eruption at\u202fK\u012blauea’s\u202fsummit is occurring within a closed area of Hawai'i Volcanoes National Park. Therefore, high levels of volcanic gas are the primary hazard of concern, as this hazard can have far-reaching\u202feffects down-wind. Large amounts of volcanic gas—primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)—are continuously released during eruptions of\u202fK\u012blauea\u202fvolcano. As SO\u003Csub\u003E2\u003C\/sub\u003E is released from the summit, it will react in the atmosphere to create the visible haze known as\u202fvog\u202f(volcanic smog) that has been observed downwind of\u202fK\u012blauea.\u202fVog\u202fcreates the potential for airborne health hazards to residents and visitors, damages agricultural crops and other plants, and affects livestock.\u202fFor more information on gas hazards at the summit of\u202fK\u012blauea, please see:\u202f\u003Ca href=\u0022https:\/\/pubs.er.usgs.gov\/publication\/fs20173017\u0022\u003Ehttps:\/\/pubs.er.usgs.gov\/publication\/fs20173017\u003C\/a\u003E. Vog\u202finformation can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E.\u202f\u003Cbr \/\u003E\u003Cbr \/\u003EAdditional hazards include Pele's hair and other lightweight volcanic glass fragments from the lava fountains that will fall downwind of the fissure vents and dust the ground within a few hundred meters (yards) of the vent\u202f(s). Strong winds may waft lighter particles to greater distances. Residents should minimize exposure to these volcanic particles, which can cause skin and eye irritation.\u202f\u003Cbr \/\u003E\u003Cbr \/\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u202f\u003Cbr \/\u003E\u003Cbr \/\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E.\u003Cbr \/\u003E\u003Cbr \/\u003EPlease see the\u202fHawai\u02bbi\u202fVolcanoes National Park website for visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E.\u202fVisitors to Hawai\u02bbi Volcanoes National Park should note that under southerly (non-trade) wind conditions, there is potential for a dusting of powdery to gritty ash composed of volcanic glass and rock fragments. These ashfalls represent a minor hazard, but visitors should be aware that such dustings at areas around the\u202fK\u012blauea\u202fsummit are possible.\u202f\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003Cbr \/\u003E \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea updates will be issued daily. Should volcanic activity change significantly a new VAN will be issued. Regularly scheduled updates are posted on the HVO website at \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"K\u012blauea summit eruption continues in Halema\u2018uma\u2018u; status downgrade to ORANGE\/WATCH. ","sentUtc":"2023-01-06","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2023-01-06T10:09:57-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2023-01-06T10:09:57-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2023-01-06T10:09:57-08:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230106\/0235Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/H15\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea\u202fvolcano is erupting. At approximately 4:34 p.m. HST on January 5, 2023, the USGS Hawaiian Volcano Observatory detected glow in\u202fK\u012blauea\u202fsummit webcam images indicating that the eruption has resumed within Halema\u02bbuma\u02bbu crater in K\u012blauea’s\u202fsummit caldera, within Hawai‘i Volcanoes National Park.\u003Cbr \/\u003E\u003Cbr \/\u003EThe USGS Hawaiian Volcano Observatory is elevating\u202fK\u012blauea’s\u202fvolcano alert level from WATCH to WARNING and its aviation color code from ORANGE to RED as this eruption and associated hazards are evaluated.\u202f\u202f\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe opening phases of eruptions are dynamic. Webcam imagery shows fissures at the base of Halema\u02bbuma\u02bbu crater generating lava flows on the surface of the crater floor. The activity is confined to Halema\u02bbuma\u02bbu and the hazards will be reassessed as the eruption progresses.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO will continue to monitor this activity closely and report any significant changes in future notices.\u003Cbr \/\u003E\u003Cbr \/\u003EHVO is in constant communication with Hawai‘i Volcanoes National Park as this situation evolves. The activity is confined entirely within the park.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cu\u003EHazard Analysis:\u202f\u003C\/u\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe eruption at\u202fK\u012blauea’s\u202fsummit is occurring within a closed area of Hawai'i Volcanoes National Park. Therefore, high levels of volcanic gas are the primary hazard of concern, as this hazard can have far-reaching\u202feffects down-wind. Large amounts of volcanic gas—primarily water vapor (H\u003Csub\u003E2\u003C\/sub\u003EO), carbon dioxide (CO\u003Csub\u003E2\u003C\/sub\u003E), and sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E)—are continuously released during eruptions of\u202fK\u012blauea\u202fvolcano. As SO\u003Csub\u003E2\u003C\/sub\u003E is released from the summit, it will react in the atmosphere to create the visible haze known as\u202fvog\u202f(volcanic smog) that has been observed downwind of\u202fK\u012blauea.\u202fVog\u202fcreates the potential for airborne health hazards to residents and visitors, damages agricultural crops and other plants, and affects livestock.\u202fFor more information on gas hazards at the summit of\u202fK\u012blauea, please see:\u202f\u003Ca href=\u0022https:\/\/pubs.er.usgs.gov\/publication\/fs20173017\u0022\u003Ehttps:\/\/pubs.er.usgs.gov\/publication\/fs20173017\u003C\/a\u003E. Vog\u202finformation can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E.\u202f\u003Cbr \/\u003E\u003Cbr \/\u003EAdditional hazards include Pele's hair and other lightweight volcanic glass fragments from the lava fountains that will fall downwind of the fissure vents and dust the ground within a few hundred meters (yards) of the vent\u202f(s). Strong winds may waft lighter particles to greater distances. Residents should minimize exposure to these volcanic particles, which can cause skin and eye irritation.\u202f\u003Cbr \/\u003E\u003Cbr \/\u003EOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u202f\u003Cbr \/\u003E\u003Cbr \/\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E.\u003Cbr \/\u003E\u003Cbr \/\u003EPlease see the\u202fHawai\u02bbi\u202fVolcanoes National Park website for visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E.\u202fVisitors to Hawai\u02bbi Volcanoes National Park should note that under southerly (non-trade) wind conditions, there is potential for a dusting of powdery to gritty ash composed of volcanic glass and rock fragments. These ashfalls represent a minor hazard, but visitors should be aware that such dustings at areas around the\u202fK\u012blauea\u202fsummit are possible.\u202f\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003Cbr \/\u003E \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea updates will be issued daily. Should volcanic activity change significantly a new VAN will be issued. Regularly scheduled updates are posted on the HVO website at \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"K\u012blauea summit eruption has resumed. RED\/WARNING upgrade from ORANGE\/WATCH.","sentUtc":"2023-01-06","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2023-01-05T17:23:55-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2023-01-05T17:23:55-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2023-01-05T17:23:55-08:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230106\/0120Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2022\/H660\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea volcano is not erupting. Increased earthquake activity and changes in the patterns of ground deformation at K\u012blauea’s\u202fsummit began occurring in the early morning of January 5, 2023, indicating movement of magma in the subsurface. At this time, it is not possible to say with certainty if this activity will lead to an eruption; the activity may remain below ground. However, an eruption in K\u012blauea’s summit region, within Hawai‘i Volcanoes National Park and away from infrastructure, is one potential outcome.\u003Cbr \/\u003E\u003Cbr \/\u003EThe USGS Hawaiian Volcano Observatory is raising the volcano alert level\/aviation color code for K\u012blauea from Advisory\/Yellow to Watch\/Orange due to this activity.\u003Cbr \/\u003E\u003Cbr \/\u003EHVO will continue to monitor this activity closely and adjust the alert level accordingly.\u003Cbr \/\u003E\u003Cbr \/\u003EHVO is in constant communication with Hawai‘i Volcanoes National Park as this situation evolves. The activity is confined entirely within the park.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E.\u003Cbr \/\u003E\u003Cbr \/\u003EPlease see the\u202fHawai\u02bbi\u202fVolcanoes National Park website for visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E.\u202fVisitors to Hawai\u02bbi Volcanoes National Park should note that under southerly (non-trade) wind conditions, there is potential for a dusting of powdery to gritty ash composed of volcanic glass and rock fragments. These ashfalls represent a minor hazard, but visitors should be aware that such dustings at areas around the\u202fK\u012blauea\u202fsummit are possible.\u202f\u003Cbr \/\u003E \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003Cbr \/\u003E \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea updates will now be issued daily. Should volcanic activity change significantly a new VAN will be issued. Regularly scheduled updates are posted on the HVO website at \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cbr \/\u003E \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"K\u012blauea summit earthquakes and ground deformation. ORANGE\/WATCH upgrade from YELLOW\/ADVISORY.","sentUtc":"2023-01-06","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2022-12-15T12:39:24-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2022-12-15T12:39:24-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2022-12-15T12:39:24-08:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20230105\/2009Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ECleveland (VNUM #311240)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2023\/A21\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E5676 ft (1730 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EA sustained reduction of volcanic unrest at Cleveland Volcano over the past few months has prompted the Alaska Volcano Observatory to downgrade the Aviation Color Code and Volcano Alert Level from YELLOW\/ADVISORY to UNASSIGNED\/UNASSIGNED.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EElevated surface temperatures and sulfur dioxide emissions prompted raising the Aviation Color Code and Volcano Alert Level from UNASSIGNED\/UNASSIGNED to YELLOW\/ADVISORY on May 11, 2022. This activity continued throughout the summer, but all signs of unrest have ceased or declined in recent months. Elevated surface temperatures in the summit crater are occasionally being observed but at reduced frequency and strength. Sulfur dioxide emissions have not been detected in satellite data since July 29, 2022. The last eruptive activity at Cleveland volcano was a short-lived explosion on the evening (local time) of June 1, 2020.\u003Cbr \/\u003E\u003Cbr \/\u003EDespite the current pause, the eruptive period at Cleveland, dating back to 2001, remains ongoing and future explosions are likely. These occur without warning and typically generate small clouds of volcanic ash that are a hazard in the immediate vicinity of the volcano, though more significant ash emissions are possible.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ECleveland volcano is monitored with a limited real-time seismic network. This smaller network inhibits AVO's ability to detect precursory unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enot applicable\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enot applicable\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ECleveland volcano forms the western portion of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. The volcano is located about 45 miles (75 km) west of the community of Nikolski, and 940 miles (1500 km) southwest of Anchorage. The most recent significant period of eruption began in February 2001 and produced 3 explosive events that generated ash clouds as high as 39,000 ft (11.8 km) above sea level. The 2001 eruption also produced a lava flow and hot avalanche that reached the sea. Since then, Cleveland has been intermittently active producing small lava flows, often followed by explosions that generate small ash clouds generally below 20,000 ft (6 km) above sea level. These explosions also launch debris onto the slopes of the cone producing hot pyroclastic avalanches and lahars that sometimes reach the coastline.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS, mcoombs@usgs.gov, (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPavel Izbekov, Acting Coordinating Scientist, UAFGI peizbekov@alaska.edu (907) 322-4085\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Aviation color code and alert level moved to UNASSIGNED\/UNASSIGNED due to a sustained reduction of volcanic unrest.","sentUtc":"2023-01-05","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2023-01-04T16:43:18-09:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2023-01-04T16:43:18-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2023-01-04T16:43:18-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20221228\/2046Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESemisopochnoi (VNUM #311060)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2022\/A1518\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2625 ft (800 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EAsh emissions resumed over the past 24 hours at the active north crater of Mount Cerberus. Minor ash deposits on the flanks of Mount Cerberus were observed on fresh snow extending up to ~1 km (~1000 yards) from the vent in web camera images over the past day. No ash plumes have been observed in web camera or satellite imagery, but a persistent steam plume rising up to 5,000 ft above sea level from the active crater may now be carrying minor volcanic ash within it. The observation of ash deposits follows increased seismicity, including seismic tremor, in the past week. This activity is similar to eruptive activity observed over the past year at Semisopochnoi, but not since November 7. The Alaska Volcano Observatory is therefore raising the Aviation Color Code to ORANGE and Volcano Alert Level to WATCH. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESmall eruptions producing minor ash deposits within the vicinity of the active north crater of Mount Cerberus and ash clouds usually under 10,000 ft (3 km) above sea level have characterized the recent activity and more ash-producing events could occur again with little warning. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESemisopochnoi is monitored by a local seismic and infrasound network, local web cameras, regional lightning and infrasound sensors, and satellite data. \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003C5,000 ft\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Esteam and minor ash\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERemote Semisopochnoi volcano occupies the largest, young volcanic island in the western Aleutians. The uninhabited island is part of the Alaska Maritime National Wildlife Refuge. It is located 65 km (40 mi) northeast of Amchitka Island and 200 km (130 mi) west of Adak, Alaska. Semisopochnoi volcano is dominated by an 8-km (5-mile) diameter caldera that contains a small lake and several post-caldera cones and craters. The age of the caldera is not known with certainty but is likely early Holocene. The north cone of Mount Cerberus, in the southwest part of the caldera, is the site of the current eruption, which began in 2018. The last known eruption prior to 2018 was in 1987 from Sugarloaf Peak on the south coast of the island.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS, mcoombs@usgs.gov, (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at \u003Ca href=\u0022http:\/\/www.avo.alaska.edu\u0022\u003Ehttp:\/\/www.avo.alaska.edu\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Minor ash deposits observed in web camera images. Aviation Color Code and Volcano Alert Level raised to ORANGE\/WATCH.","sentUtc":"2022-12-28","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2022-12-27T21:14:33-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2022-12-27T21:14:33-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2022-12-27T21:14:33-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20221217\/2033Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EPavlof (VNUM #312030)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2022\/A1462\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Peninsula\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E8261 ft (2518 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EEruptive activity at Pavlof Volcano has paused. Although seismicity remains above background levels with intermittent seismic tremor, no explosions have been detected since December 7, 2022.  No elevated surface temperatures or incandescent lava have been observed in satellite and webcam images since December 2. Due to this decrease in activity, we are lowering the Aviation Color Code to YELLOW and Volcano Alert Level to ADVISORY.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPrevious eruptions of Pavlof indicate that the level of unrest can change quickly and eruptive activity could resume with little or no warning.\u202fPavlof is monitored by local seismic and infrasound sensors, satellite data, web cameras, and regional infrasound and lightning networks. \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPavlof Volcano is a snow- and ice-covered stratovolcano located on the southwestern end of the Alaska Peninsula about 953 km (592 mi) southwest of Anchorage. The volcano is about 7 km (4.4 mi) in diameter and has active vents on the north and east sides close to the summit. With over 40 historic eruptions, it is one of the most consistently active volcanoes in the Aleutian arc. Eruptive activity is generally characterized by sporadic Strombolian lava fountaining continuing for a several-month period. Ash plumes as high as 49,000 ft ASL have been generated by past eruptions of Pavlof, and during the March 2016 eruption, ash plumes as high as 40,000 feet above sea level were generated and the ash was tracked in satellite data as distant as eastern Canada. The nearest community, Cold Bay, is located 60 km (37 miles) to the southwest of Pavlof.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS, mcoombs@usgs.gov, (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"No eruptive activity since December 7. Aviation Color Code and Volcano Alert Level lowered to YELLOW\/ADVISORY.","sentUtc":"2022-12-17","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2022-12-17T10:49:51-09:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2022-12-17T10:49:51-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2022-12-17T10:49:51-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20221213\/1717Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EMauna Loa (VNUM #332020)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2022\/H657\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 28 min W 155 deg 36 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E13681 ft (4170 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EMauna Loa is no longer erupting. Lava supply to the fissure 3 vent on the Northeast Rift Zone ceased on December 10 and sulfur dioxide emissions have decreased to near pre-eruption background levels. Volcanic tremor and earthquakes associated with the eruption are greatly diminished.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAccordingly, the USGS Hawaiian Volcano Observatory (HVO) is lowering the Volcano Alert Level for ground-based hazards from WATCH to ADVISORY and the Aviation Color Code from ORANGE to YELLOW. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESpots of incandescence may remain near the vent, along channels, and at the flow front for days or weeks as the lava flows cool. However, eruptive activity is not expected to return based on past eruptive behavior. Summit and Northeast Rift Zone inflation continues. \u003Cbr \/\u003E \u003Cbr \/\u003EHVO continues to closely monitor Mauna Loa for signs of renewed activity. Should volcanic activity change significantly a new Volcanic Activity Notice will be issued immediately. \u003Cbr \/\u003E \u003Cbr \/\u003EResidents and visitors should stay informed and follow County of Hawai‘i and Hawai\u02bbi Volcanoes National Park guidelines. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor more information about the meaning of aviation color codes, see \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u0022\u003Ehttps:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u003C\/a\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EContinuing hazards \u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA vent on the west side of the fissure 3 cone remains incandescent and occasionally produces small explosions as trapped gases are released. The lava flows around the vent remain hot and unstable. The vent area is also cut by numerous ground cracks. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawai‘i Volcanoes National Park has closed the Mauna Loa Road from K\u012bpukapuaulu and the closure extends to the summit caldera; for more information please see \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.nps.gov\/havo\/index.htm.\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm.\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cul\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003Cbr \/\u003E \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMauna Loa updates will be issued daily until December 15, after which they will be issued weekly on Thursdays. Should volcanic activity change significantly a new VAN will be issued. Regularly scheduled updates on the status of Mauna Loa will be posted on the HVO website at \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EMauna Loa activity summary also available by phone: (808) 967-8866\u003C\/li\u003E\u003Cli\u003EMauna Loa webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EMauna Loa photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/photo-and-video-chronology-mauna-loa\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/photo-and-video-chronology-mauna-loa\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EMauna Loa maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EMauna Loa FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/frequently-asked-questions-about-mauna-loa-volcano\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003ERecent Volcano Watch on Mauna Loa: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-mauna-loa-reawakens-0\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-mauna-loa-reawakens-0\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EMap-based webpage for Mauna Loa: \u003Ca href=\u0022https:\/\/geonarrative.usgs.gov\/maunaloa\/\u0022\u003Ehttps:\/\/geonarrative.usgs.gov\/maunaloa\/\u003C\/a\u003E       \u003C\/li\u003E\u003Cli\u003EAdditional Mauna Loa Resources: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/prepare-mauna-loa-resources\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/prepare-mauna-loa-resources\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Mauna Loa is no longer erupting. ORANGE\/WATCH downgrade to YELLOW\/ADVISORY.\u202f","sentUtc":"2022-12-13","obs":"hvo","vName":"Mauna Loa","vnum":"332020","noticeId":"DOI-USGS-HVO-2022-12-13T08:57:10-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2022-12-13T08:57:10-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2022-12-13T08:57:10-08:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20221213\/1712Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EKilauea (VNUM #332010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2022\/H656\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4091 ft (1247 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea is no longer erupting. Lava supply to the Halema\u02bbuma\u02bbu lava lake ceased on December 9 based upon lava lake levels and behavior of the crater floor. Sulfur dioxide emissions have decreased to near pre-eruption background levels.   \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAccordingly, the USGS Hawaiian Volcano Observatory (HVO) is lowering the Volcano Alert Level for ground-based hazards from WATCH to ADVISORY and the Aviation Color Code from ORANGE to YELLOW.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESeismicity and deformation patterns remain unsettled. Potential remains for resumption of this eruption or initiation of a new eruption at or near the summit of K\u012blauea. \u003Cbr \/\u003E \u003Cbr \/\u003EHVO continues to closely monitor K\u012blauea for signs of renewed activity. Should volcanic activity change significantly a new Volcanic Activity Notice will be issued. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHazards are still present on K\u012blauea and are described below. Residents and visitors should stay informed and follow County of Hawai‘i and Hawai\u02bbi Volcanoes National Park guidelines. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor more information about the meaning of aviation color codes, see \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u0022\u003Ehttps:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u003C\/a\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EContinuing hazards \u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ELevels of volcanic gas (sulfur dioxide and carbon dioxide) can remain locally hazardous even though K\u012blauea is no longer erupting. Sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E) gas emissions have greatly decreased; however, local concentrations of sulfur dioxide (SO\u003Csub\u003E2\u003C\/sub\u003E) or hydrogen sulfide (H\u003Csub\u003E2\u003C\/sub\u003ES) may persist in downwind areas, and residents may notice odors of these gases occasionally. Significant hazards also remain around Halema\u02bbuma\u02bbu from crater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPlease\u202fsee the\u202fHawai\u02bbi\u202fVolcanoes National Park website for visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E.\u202f\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003Cbr \/\u003E \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EK\u012blauea updates will now be issued weekly on Tuesdays. Should volcanic activity change significantly a new VAN will be issued. Regularly scheduled updates are posted on the HVO website at \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EK\u012blauea activity summary also available by phone: (808) 967-8862\u003C\/li\u003E\u003Cli\u003EK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cbr \/\u003E \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"K\u012blauea\u202fis no longer erupting. ORANGE\/WATCH downgrade to YELLOW\/ADVISORY.\u202f","sentUtc":"2022-12-13","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2022-12-13T08:57:08-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2022-12-13T08:57:08-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2022-12-13T08:57:08-08:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20221204\/1810Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EMauna Loa (VNUM #332020)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ERED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2022\/H628\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 28 min W 155 deg 36 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E13681 ft (4170 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003ELava eruption from fissure 3 on the Northeast Rift Zone of Mauna Loa continues, but the threat to aviation of significant volcanic ash emission into the atmosphere has passed. For this reason, HVO is reducing the aviation color code from RED to ORANGE.   \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe ground-based volcano alert level will remain at WARNING, reflecting the ongoing hazards of the fissure 3 lava flow. Lava flows are slowly moving north toward Daniel K. Inouye Highway and are spreading out and inflating (thickening) as they advance over low-sloping ground. The fronts of lava flows can break open unexpectedly, sending flows in several directions. Rain on lava creates steam and reduces visibility. If visiting the County of Hawai'i public viewing area, remain with your vehicle and do not approach the flows. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe Federal Aviation Administration has issued a temporary flight restriction extending from the surface to 1500 feet (457 meters) above ground level in the eruption area. See: \u003Ca href=\u0022https:\/\/tfr.faa.gov\/save_pages\/detail_2_9210.html\u00a0\u0022\u003Ehttps:\/\/tfr.faa.gov\/save_pages\/detail_2_9210.html \u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFor more information about the meaning of aviation color codes, see \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u0022\u003Ehttps:\/\/www.usgs.gov\/programs\/VHP\/volcanic-alert-levels-characterize-conditions-us-volcanoes\u003C\/a\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe eruption has now focused at a single vent, fissure 3, at an elevation of 11,500 ft (3510 m) along the Northeast Rift Zone of Mauna Loa. Lava fountaining at the vent has been approximately 100 feet (33 m) tall over the past day, depositing fragments of volcanic material in the area near the vent. Pele's hair (small strands of volcanic glass) are being wafted great distances and have been reported as far as Laup\u0101hoehoe, a community on the northeast coastline of the Island of Hawai'i about 23 miles (37 km) north of Hilo and 37 mi (59 km) northwest of fissure 3.   \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESulfur dioxide (SO2) emission rates of approximately 180,000 tonnes per day (t\/d) were measured on December 1, 2022 and remain elevated at this time. Volcanic gas is rising high and vertically into the atmosphere before being blown to the west at high altitude, generating vog (volcanic air pollution) in areas downwind. The International Volcanic Health Hazard Network has detailed information about vog: \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E. Forecasts for the dispersion of vog can be found on the Vog Forecasting Dashboard: http:\/\/weather.hawaii.edu\/vmap\/new\/ \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EFissure 3 is generating a lava flow traveling to the north toward the Daniel K. Inouye Highway (Saddle Road) that has reached flatter ground and slowed down significantly over the past several days, as expected. As of 7 a.m. today, December 4, the flow front was about 2.3 mi (3.6 km) from the Daniel K. Inouye Highway (Saddle Road). During the past 24 hours, the lava flow advanced at an average rate of about 40 feet per hour (12 meters per hour). Though the advance rate has slowed over the past several days, the lava flow remains active with a continuous supply from the fissure 3 vent.   \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAdvance rates may be highly variable over the coming days and weeks. On the flat ground between Mauna Loa and Mauna Kea, lava flows advance more slowly, spread out, and inflate. Individual lobes may advance quickly, and then stall. Additional breakouts may occur if lava channels get blocked upslope. There are many variables at play and both the direction and timing of flow advances are expected to change over periods of hours to days, making it difficult to estimate when or if the flow will impact Daniel K. Inouye Highway.   \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ETremor (a signal associated with subsurface fluid movement) continues beneath the currently active fissures. This indicates that magma is still being supplied to the fissure, and activity is likely to continue as long as we see this signal.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThere is no active lava within Moku'\u0101weoweo caldera nor the Southwest Rift Zone. We do not expect any eruptive activity outside the Northeast Rift Zone.   \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMost recent eruption map:  \u003Ca href=\u0022https:\/\/www.usgs.gov\/maps\/december-3-2022-mauna-loa-eruption-map\u0022\u003Ehttps:\/\/www.usgs.gov\/maps\/december-3-2022-mauna-loa-eruption-map\u003C\/a\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EInformation on lava viewing: \u003Ca href=\u0022https:\/\/www.khon2.com\/local-news\/mauna-loa-eruption\/new-4-5-mile-route-opened-to-view-mauna-loa-eruption\/\u0022\u003Ehttps:\/\/www.khon2.com\/local-news\/mauna-loa-eruption\/new-4-5-mile-route-opened-to-view-mauna-loa-eruption\/\u003C\/a\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EVolcanic Hazards:  \u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cem\u003EAir quality\/volcanic gas\u202fplume\u202f(fissure eruption):\u202f\u003C\/em\u003EHigh levels of volcanic gas, including\u202fsulfur dioxide (SO2), are emitted from the fissure vents.\u202fAs SO2 is released from the\u202feruption, it will react in the atmosphere with oxygen, sunlight, moisture, and other gases and particles and within hours to days, convert to fine particles downwind. The particles scatter sunlight and cause the visible haze, known as\u202fvog\u202f(volcanic\u202fair pollution, from “volcanic smog”).\u202fVog\u202fcreates the potential for airborne health hazards to residents and visitors, damages agricultural crops and other plants, and affects livestock operations.\u202f  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cem\u003ELava flows:\u202f\u003C\/em\u003EHawaiian lava flows generally advance slowly enough that people can avoid them. They can destroy everything in their paths, including vegetation and infrastructure—which can cut off road access and utilities.\u202fHazards associated with active\u202for recent lava flows\u202finclude\u202fhot\u202fand glassy\u202f(sharp)\u202fsurfaces that can cause severe burns, abrasions, and lacerations\u202fupon contact with unprotected or exposed skin;\u202funeven and rough terrain can lead to falls\u202fand other injuries;\u202fhot temperatures that can cause heat\u202fexhaustion or dehydration, or\u202fin heavy rain can\u202fproduce steamy ground-fog that\u202fcan be acidic,\u202fseverely\u202flimiting\u202fvisibility and\u202fsometimes\u202fcausing\u202fdifficulty\u202fbreathing.\u202f\u202f \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cem\u003ETephra fall:\u202f\u202f\u003C\/em\u003EPele's hair and other lightweight volcanic glass fragments from lava fountains and spattering will fall downwind, dusting the ground within a few hundred meters (yards) of the vent. High winds may waft lighter particles\u202fand transport them\u202fgreater distances\u202fdownwind.\u202fResidents are urged to minimize exposure to these volcanic particles, which can cause skin and eye irritation similar to volcanic ash.\u202f  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cem\u003ESecondary hazards:\u003C\/em\u003E Lava flow advance into vegetated areas may generate secondary hazards by igniting small fires in vegetation adjacent to lava flow margins. Lava flows that cover and burn vegetation\u202fand soil\u202falso introduce the hazard of subsurface natural gas pockets igniting, which can cause methane explosions. These explosions can blast lava fragments up to several meters (yards) away and can be hazardous to observers.\u202f \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EResidents with questions about emergency response and resources that may be available to assist those at risk should consult \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.hawaiicounty.gov\/departments\/civil-defense\/active-civil-defense-alerts-and-maps.\u0022\u003Ehttps:\/\/www.hawaiicounty.gov\/departments\/civil-defense\/active-civil-defense-alerts-and-maps.\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawai‘i Volcanoes National Park has closed the Mauna Loa Road from K\u012bpukapuaulu and the closure extends to the summit caldera; for more information please see \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.nps.gov\/havo\/index.htm.\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm.\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\u003Cul\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003Cbr \/\u003E \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EUpdates on the status of Mauna Loa activity will be posted on the HVO web site in the morning and afternoon at: \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/volcano-updates\u003C\/a\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EYou can receive these updates via email by subscribing to the free Volcano Notification Service at: \u003Ca target=\u0022_blank\u0022 href=\u0022http:\/\/volcanoes.usgs.gov\/vns\/\u0022\u003Ehttp:\/\/volcanoes.usgs.gov\/vns\/\u003C\/a\u003E. Questions can be emailed to \u003Ca target=\u0022_blank\u0022 href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EMore Information:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EMauna Loa activity summary also available by phone: (808) 967-8866\u003C\/li\u003E\u003Cli\u003EMauna Loa webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/webcams\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EMauna Loa photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/photo-and-video-chronology-mauna-loa\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/photo-and-video-chronology-mauna-loa\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EMauna Loa maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/maps\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EMauna Loa FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/frequently-asked-questions-about-mauna-loa-volcano\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003ERecent Volcano Watch on Mauna Loa: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-mauna-loa-reawakens-0\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/news\/volcano-watch-mauna-loa-reawakens-0\u003C\/a\u003E\u003C\/li\u003E\u003Cli\u003EMap-based webpage for Mauna Loa: \u003Ca href=\u0022https:\/\/geonarrative.usgs.gov\/maunaloa\/\u0022\u003Ehttps:\/\/geonarrative.usgs.gov\/maunaloa\/\u003C\/a\u003E       \u003C\/li\u003E\u003Cli\u003EAdditional Mauna Loa Resources: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/prepare-mauna-loa-resources\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/prepare-mauna-loa-resources\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Mauna Loa Northeast Rift Zone eruption continues. No significant ash emissions; Aviation Color Code downgrade. Lava flows 2.3 miles from Saddle Road.","sentUtc":"2022-12-04","obs":"hvo","vName":"Mauna Loa","vnum":"332020","noticeId":"DOI-USGS-HVO-2022-12-04T09:54:38-08:00","colorCode":"ORANGE","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2022-12-04T09:54:38-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2022-12-04T09:54:38-08:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20221128\/2254Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAhyi Seamount (VNUM #284141)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUNASSIGNED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EU.S. Geological Survey\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2022\/N50\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 20 deg 25 min E 145 deg 1 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENorthern Mariana Islands\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E-449 ft (-137 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003ESigns of unrest at Ahyi Seamount have been observed in satellite and remote geophysical data.  A plume of discolored water above Ahyi Seamount has been visible persistently in satellite data since November 18, 2022. This discoloration could be due to degassing or eruption at the volcano, but we cannot say for certain due to a lack of local monitoring stations. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EStarting in mid-October, hydroacoustic sensors at Wake Island, 2,270 km (1,410 miles) east of Ahyi, began recording signals consistent with activity from an undersea volcanic source. In collaboration with the Laboratoire de Geophysique in Tahiti, recent combined analysis of the hydroacoustic signals together with data from seismic stations located at Guam and Chichijima Island, Japan, confirm that the source of this activity is at or near Ahyi seamount.  Hydrophone signals continue to be observed but have decreased in the past few weeks.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDue to the current activity, the aviation color code is being raised from UNASSIGNED to YELLOW and the alert level is being raised from UNASSIGNED to ADVISORY. \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENo volcanic cloud produced\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EWater discoloration observed above seamount in satellite images\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EAhyi seamount is a large conical submarine volcano that rises to within 137 m (450 ft) of the sea surface about 18 km (11 mi) southeast of Farallon de Pajaros (Uracas) Island in the northern Marianas, about 600 km (370 mi) north of the island of Saipan. In the past, discolored water has been observed over the submarine volcano. In 1979, the crew of a fishing boat felt shocks over the summit area and then observed upwelling of sulfur-bearing water. On April 24-25, 2001 an explosive submarine eruption was detected seismically from a seismic station on Rangiroa Atoll, Tuamotu Archipelago. The event was well constrained (+\/- 15 km or 9 miles) at a location near the southern base of Ahyi.\u003Cbr \/\u003E \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ECNMI Homeland Security and Emergency Management\u003Cbr \/\u003Ehttp:\/\/www.cnmihsem.gov.mp\/\u003Cbr \/\u003E\u003Cbr \/\u003EUSGS Northern Mariana Duty Scientist (907) 786-7497\u003Cbr \/\u003Ehttp:\/\/volcano.wr.usgs.gov\/cnmistatus.php\u003Cbr \/\u003E\u003Cbr \/\u003ESatellite information, Washington VAAC\u003Cbr \/\u003Ehttp:\/\/www.ssd.noaa.gov\/VAAC\/washington.html\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Unrest observed at Ahyi seamount.","sentUtc":"2022-11-28","obs":"nmi","vName":"Ahyi Seamount","vnum":"284141","noticeId":"DOI-USGS-NMI-2022-11-28T11:02:08-09:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2022-11-28T11:02:08-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2022-11-28T11:02:08-09:00","nvewsThreat":"Very Low Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20221128\/1720Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EMauna Loa (VNUM #332020)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ERED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2022\/H603\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 28 min W 155 deg 36 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E13681 ft (4170 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe eruption of Mauna Loa has migrated from the summit to the Northeast Rift Zone where fissures are feeding several lava flows. HVO staff on an overflight at approximately 6:30 a.m. HST confirmed fissures at high elevations within Hawai‘i Volcanoes National Park are feeding lava flows upslope of the Mauna Loa Weather Observatory. Lava flows are not threatening any downslope communities and all indications are that the eruption will remain in the Northeast Rift Zone. Volcanic gas and possibly fine ash and Pele's Hair may be carried downwind.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EResidents at risk from Mauna Loa lava flows should review preparedness and refer to Hawai‘i County Civil Defense information for further guidance.    \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBased on past events, the early stages of a Mauna Loa rift zone eruption can be very dynamic, and the location and advance of lava flows can change rapidly.    \u003C\/p\u003E\u003Cul\u003E\u003C\/ul\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO is in close consultation with emergency management partners and will monitor the volcano closely to provide further updates on activity.  \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EResidents with questions about emergency response and resources that may be available to assist those at risk should consult \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.hawaiicounty.gov\/departments\/civil-defense\/active-civil-defense-alerts-and-maps.\u0022\u003Ehttps:\/\/www.hawaiicounty.gov\/departments\/civil-defense\/active-civil-defense-alerts-and-maps.\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawai‘i Volcanoes National Park has closed the Mauna Loa Road from K\u012bpukapuaulu and the closure extends to the summit caldera; for more information please see \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.nps.gov\/havo\/index.htm.\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm.\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EVog information can be found at \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EBackground:\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESince the mid-19th century, Mauna Loa’s Northeast Rift Zone has erupted eight times: in 1843, 1852, 1855–1856, 1880–1881, 1899, 1935–1936, 1942, and 1984. Lava flows from the Northeast Rift Zone can travel in north, west, northwest, south, and southwest directions.\u003C\/p\u003E\u003Cul\u003E\u003C\/ul\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003Cbr \/\u003E \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EUpdates on the status of Mauna Loa activity will be posted on the HVO web site at: \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/volcano-updates\u003C\/a\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EYou can receive these updates via email by subscribing to the free Volcano Notification Service at: \u003Ca target=\u0022_blank\u0022 href=\u0022http:\/\/volcanoes.usgs.gov\/vns\/\u0022\u003Ehttp:\/\/volcanoes.usgs.gov\/vns\/\u003C\/a\u003E. Questions can be emailed to \u003Ca target=\u0022_blank\u0022 href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E. \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Eruption has moved to Mauna Loa\u2019s Northeast Rift Zone. Local hazards include lava flows, ash and tephra fall, and heavy vog.  ","sentUtc":"2022-11-28","obs":"hvo","vName":"Mauna Loa","vnum":"332020","noticeId":"DOI-USGS-HVO-2022-11-28T09:00:26-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2022-11-28T09:00:26-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2022-11-28T09:00:26-08:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20221128\/0945Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EMauna Loa (VNUM #332020)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2022\/H602\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 19 deg 28 min W 155 deg 36 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaii\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E13681 ft (4170 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EAt approximately 11:30 p.m. HST this evening, November 27, an eruption began in Moku‘\u0101weoweo, the summit caldera of Mauna Loa, inside Hawai‘i Volcanoes National Park. At this time, lava flows are contained within the summit area and are not threatening downslope communities.  Winds may carry volcanic gas and possibly fine ash and Pele’s hair downwind.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EResidents at risk from Mauna Loa lava flows should review preparedness and refer to Hawai‘i County Civil Defense information for further guidance. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EBased on past events, the early stages of a Mauna Loa eruption can be very dynamic and the location and advance of lava flows can change rapidly.    \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EIf the eruption remains in Moku‘\u0101weoweo, lava flows will most likely be confined within the caldera walls.  However, if the eruptive vents migrate outside its walls, lava flows may move rapidly downslope.   \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO is in close consultation with emergency management partners and will be monitoring the volcano closely to provide further updates on activity.  As soon as possible, HVO will conduct aerial reconnaissance to better describe the eruption and assess hazards.    \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003ERemarks:\u003C\/strong\u003E Residents with questions about emergency response and resources that may be available to assist those at risk should consult \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.hawaiicounty.gov\/departments\/civil-defense\/active-civil-defense-alerts-and-maps.\u0022\u003Ehttps:\/\/www.hawaiicounty.gov\/departments\/civil-defense\/active-civil-defense-alerts-and-maps.\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHawai‘i Volcanoes National Park has closed the Mauna Loa summit area to visitors; for more information please see \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.nps.gov\/havo\/index.htm.\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm.\u003C\/a\u003E  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EVog information can be found at \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E. \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E\u003Cbr \/\u003E \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO Daily Updates on the status of Mauna Loa activity will be posted on the HVO web site at: \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/mauna-loa\/volcano-updates\u003C\/a\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EYou can receive these updates via email by subscribing to the free Volcano Notification Service at: \u003Ca target=\u0022_blank\u0022 href=\u0022http:\/\/volcanoes.usgs.gov\/vns\/\u0022\u003Ehttp:\/\/volcanoes.usgs.gov\/vns\/\u003C\/a\u003E. Questions can be emailed to \u003Ca target=\u0022_blank\u0022 href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E. \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Eruption has commenced at Mauna Loa summit. Local hazards include lava flows, ash and tephra fall, and heavy vog.  ","sentUtc":"2022-11-28","obs":"hvo","vName":"Mauna Loa","vnum":"332020","noticeId":"DOI-USGS-HVO-2022-11-28T01:28:44-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2022-11-28T01:28:44-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2022-11-28T01:28:44-08:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20221123\/2130Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESemisopochnoi (VNUM #311060)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2022\/A1337\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2625 ft (800 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EAlthough the active north cone of Mount Cerberus continues to produce a vapor plume and elevated seismicity, no ash emissions or explosive activity have been detected at Semisopochnoi volcano since November 7th. The level of seismic activity is still elevated but has decreased. Thus, we are lowering the Aviation Color Code to YELLOW and Volcano Alert Level to ADVISORY. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESmall eruptions producing minor ash deposits within the vicinity of the active north crater of Mount Cerberus and ash clouds usually under 10,000 ft (3 km) above sea level have characterized the recent activity and more ash-producing events could occur again with little warning. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESemisopochnoi is monitored by a local seismic and infrasound network, local web cameras, regional lightning and infrasound sensors, and satellite data. \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERemote Semisopochnoi volcano occupies the largest, young volcanic island in the western Aleutians. The uninhabited island is part of the Alaska Maritime National Wildlife Refuge. It is located 65 km (40 mi) northeast of Amchitka Island and 200 km (130 mi) west of Adak, Alaska. Semisopochnoi volcano is dominated by an 8-km (5-mile) diameter caldera that contains a small lake and several post-caldera cones and craters. The age of the caldera is not known with certainty but is likely early Holocene. The north cone of Mount Cerberus, in the southwest part of the caldera, is the site of the current eruption, which began in 2018. The last known eruption prior to 2018 was in 1987 from Sugarloaf Peak on the south coast of the island.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS, mcoombs@usgs.gov, (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EPavel Izbekov, Acting Coordinating Scientist, UAFGI peizbekov@alaska.edu (907) 322-4085\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at \u003Ca href=\u0022http:\/\/www.avo.alaska.edu\u0022\u003Ehttp:\/\/www.avo.alaska.edu\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"No explosive activity since November 7th; Aviation Color Code and Volcano Alert Level lowered to YELLOW\/ADVISORY.","sentUtc":"2022-11-23","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2022-11-23T11:57:16-09:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2022-11-23T11:57:16-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2022-11-23T11:57:16-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20221119\/0134Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ETakawangha (VNUM #311090)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EGREEN\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2022\/A1315\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 51 deg 52 min W 178 deg 1 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E4754 ft (1449 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe number of small earthquakes detected near Takawangha volcano has increased over the past few days and has intensified over the past 24 hours. The earthquakes, the largest with magnitudes between 2 and 3, have preliminary depths of about 2 to 4 miles (3 to 6 km) below sea level. This activity may be due to the movement of magma beneath the volcano. It marks a departure from background activity and therefore AVO is raising the Aviation Color Code to YELLOW and Alert Level to ADVISORY for Takawangha volcano.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ENo eruptive activity has been detected in satellite or other monitoring data.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ETakawangha is monitored with a local seismic network, a single local infrasound sensor, regional infrasound and lightning sensors, and satellite imagery.  \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ETakawangha is a remote, 1,449 m (4,754 ft)-high stratovolcano located on the northeast portion of Tanaga Island, roughly 95 km (59 miles) west of Adak in the Andreanof Islands. Takawangha's summit is mostly ice-covered, except for four young craters that have erupted ash and lava flows in the last few thousand years. Parts of Takawangha's edifice are hydrothermally altered and may be unstable, possibly leading to localized debris avalanches from its flanks. Takawangha lies across a saddle from historically active Tanaga volcano to the west. No historical eruptions are known from Takawangha; however, field work shows that recent eruptions have occurred, and it is possible that historic eruptions attributed to Tanaga may instead have come from Takawangha.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS, mcoombs@usgs.gov, (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI, dfee1@alaska.edu, (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Ongoing earthquake swarm starting November 17.","sentUtc":"2022-11-19","obs":"avo","vName":"Takawangha","vnum":"311090","noticeId":"DOI-USGS-AVO-2022-11-18T14:14:09-09:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2022-11-18T14:14:09-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2022-11-18T14:14:09-09:00","nvewsThreat":"Low Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20221107\/2208Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESemisopochnoi (VNUM #311060)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2022\/A1242\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2625 ft (800 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003ESmall explosions have been detected in geophysical data over the past week from the north crater of Mount Cerberus at Semisopochnoi. In addition, volcanic tremor has resumed during the same time period. Ash emissions have not been observed. However, the type of unrest we detected was associated with ash emissions during previous periods of unrest and, if occurring, such ash emissions are likely below 10,000 ft above sea level. These events are similar to eruptive activity observed over the last year at Semisopochnoi, but not since September 14. The Aviation Color Code and Volcano Alert Level are being raised to ORANGE\/WATCH.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESmall eruptions producing minor ash deposits within the vicinity of the active north crater of Mount Cerberus and ash clouds usually under 10,000 ft (3 km) above sea level have characterized the recent activity and more ash-producing events could occur again with little warning. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESemisopochnoi is monitored by a local seismic and infrasound network, local web cameras, regional lightning and infrasound sensors, and satellite data. \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Eless than 10,000 ft. above sea level\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERemote Semisopochnoi volcano occupies the largest, young volcanic island in the western Aleutians. The uninhabited island is part of the Alaska Maritime National Wildlife Refuge. It is located 65 km (40 mi) northeast of Amchitka Island and 200 km (130 mi) west of Adak, Alaska. Semisopochnoi volcano is dominated by an 8-km (5-mile) diameter caldera that contains a small lake and several post-caldera cones and craters. The age of the caldera is not known with certainty but is likely early Holocene. The north cone of Mount Cerberus, in the southwest part of the caldera, is the site of the current eruption, which began in 2018. The last known eruption prior to 2018 was in 1987 from Sugarloaf Peak on the south coast of the island.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EKristi Wallace, Acting Scientist-in-Charge, USGS, kwallace@usgs.gov, (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI, dfee1@alaska.edu, (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at \u003Ca href=\u0022http:\/\/www.avo.alaska.edu\u0022\u003Ehttp:\/\/www.avo.alaska.edu\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Explosions and volcanic tremor detected with likely low-level ash emissions; Aviation Color Code and Volcano Alert Level raised to ORANGE\/WATCH.","sentUtc":"2022-11-07","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2022-10-31T16:43:09-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2022-10-31T16:43:09-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2022-10-31T16:43:09-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20221019\/2206Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ETrident (VNUM #312160)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2022\/A1190\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 58 deg 14 min W 155 deg 6 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Peninsula\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E3599 ft (1097 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe swarm of earthquakes that began on August 24, 2022, beneath Trident Volcano has subsided and seismic tremor has not been observed since September 30, 2022. Occasional local earthquakes continue to be detected at background levels. Due to this decrease in activity and the absence of other signs of unrest, we are lowering the Aviation Color Code to GREEN and the Volcano Alert level to NORMAL.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShould activity increase, AVO will issue further notices. AVO monitors Trident with a local network of seismometers, a webcam, remote sensing data, and regional infrasound and lightning networks. To view current monitoring data, see \u003Ca href=\u0022https:\/\/avo.alaska.edu\/activity\/Trident.php\u0022\u003Ehttps:\/\/avo.alaska.edu\/activity\/Trident.php\u003C\/a\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ETrident Volcano is one of the Katmai group of volcanoes located within Katmai National Park and Preserve on the Alaska Peninsula. Trident consists of a complex of four cones and numerous lava domes, all andesite and dacite in composition, that reach as high as 6,115 ft above sea level. An eruption beginning in 1953 constructed the newest cone, Southwest Trident, and four lava flows on the flank of the older complex. This eruption continued through 1974 and produced ash (an initial plume rose to 30,000 ft asl), bombs, and lava at various times. Fumaroles remain active on the summit of Southwest Trident and on the southeast flank of the oldest, central cone. Trident is located 148 km (92 miles) southeast of King Salmon and 440 km (273 miles) southwest of Anchorage.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS, mcoombs@usgs.gov, (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI, dfee1@alaska.edu, (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at \u003Ca href=\u0022http:\/\/www.avo.alaska.edu\u0022\u003Ehttp:\/\/www.avo.alaska.edu\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Seismicity beneath Trident Volcano has subsided; Aviation Color Code and Volcano Alert Level lowered to GREEN\/NORMAL","sentUtc":"2022-10-19","obs":"avo","vName":"Trident","vnum":"312160","noticeId":"DOI-USGS-AVO-2022-10-19T13:26:24-08:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2022-10-19T13:26:24-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2022-10-19T13:26:24-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20220929\/2257Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESemisopochnoi (VNUM #311060)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2022\/A1082\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2625 ft (800 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EAlthough the active north cone of Mount Cerberus continues to produce a vapor plume and elevated seismic tremor, no ash emissions or explosive activity have been detected at Semisopochnoi volcano since September 14. The level of seismic activity is still elevated but has decreased. Thus, we are lowering the Aviation Color Code to YELLOW and Volcano Alert Level to ADVISORY. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESmall eruptions producing minor ash deposits within the vicinity of the active north crater of Mount Cerberus and ash clouds usually under 10,000 ft (3 km) above sea level have characterized the recent activity. More ash-producing events could occur again with little warning.\u202f \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESemisopochnoi is monitored by a local seismic and infrasound network, local web cameras, regional lightning and infrasound sensors, and satellite data. \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ERemote Semisopochnoi volcano occupies the largest, young volcanic island in the western Aleutians. The uninhabited island is part of the Alaska Maritime National Wildlife Refuge. It is located 65 km (40 mi) northeast of Amchitka Island and 200 km (130 mi) west of Adak, Alaska. Semisopochnoi volcano is dominated by an 8-km (5-mile) diameter caldera that contains a small lake and several post-caldera cones and craters. The age of the caldera is not known with certainty but is likely early Holocene. The north cone of Mount Cerberus, in the southwest part of the caldera, is the site of the current eruption, which began in 2018. The last known eruption prior to 2018 was in 1987 from Sugarloaf Peak on the south coast of the island.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS, mcoombs@usgs.gov, (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI, dfee1@alaska.edu, (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at \u003Ca href=\u0022http:\/\/www.avo.alaska.edu\u0022\u003Ehttp:\/\/www.avo.alaska.edu\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Seismicity low; no ash emissions since September 14; Aviation Color Code and Volcano Alert Level lowered to YELLOW\/ADVISORY.","sentUtc":"2022-09-29","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2022-09-29T07:37:30-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2022-09-29T07:37:30-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2022-09-29T07:37:30-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20220929\/2256Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ETrident (VNUM #312160)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EGREEN\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2022\/A1083\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 58 deg 14 min W 155 deg 6 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Peninsula\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E3599 ft (1097 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EThe swarm of earthquakes that began on August 24, 2022, beneath Trident volcano continues. In addition, episodes of weak seismic tremor and low frequency earthquakes have been detected since August 28. Together, these observations mean that Trident is exhibiting signs of elevated unrest above known background level. Therefore, we are raising the Aviation Color Code to YELLOW and the Volcano Alert level to ADVISORY. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDuring the current swarm, earthquake depths were initially mostly deep at around 25 km (16 miles) below sea level but became progressively shallower to around 5 km (3 miles) by August 28. Since then, earthquakes have mostly occurred 3 to 6 km (about 2 to 4 miles) below sea level, although some deeper events have been detected. Earthquake magnitudes (M) have ranged from M –0.7 to M 1.9. At the peak of the swarm, dozens of earthquakes occurred daily beneath the volcano, but earthquake rates have since decreased to just a few per day. No other signs of unrest have been detected in monitoring data. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EThe increase in seismic activity is likely caused by movement of magma or magmatic fluids. Increases in seismic activity have been detected previously at Trident and other similar volcanoes, with no subsequent eruptions. We expect additional shallow seismicity and other signs of unrest, such as gas emissions, elevated surface temperatures, and surface deformation to precede any future eruption, if one were to occur. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShould activity increase, AVO will issue further notices. AVO monitors Trident with a local network of seismometers, a webcam, remote sensing data, and regional infrasound and lightning networks. To view current monitoring data, see \u003Ca href=\u0022https:\/\/avo.alaska.edu\/activity\/Trident.php\u0022\u003Ehttps:\/\/avo.alaska.edu\/activity\/Trident.php\u003C\/a\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ETrident is one of the Katmai group of volcanoes located within Katmai National Park and Preserve on the Alaska Peninsula. Trident consists of a complex of four cones and numerous lava domes, all andesite and dacite in composition, that reach as high as 6,115 ft above sea level. An eruption beginning in 1953 constructed the newest cone, Southwest Trident, and four lava flows on the flank of the older complex. This eruption continued through 1974 and produced ash (an initial plume rose to 30,000 ft asl), bombs, and lava at various times. Fumaroles remain active on the summit of Southwest Trident and on the southeast flank of the oldest, central cone. Trident is located 148 km (92 miles) southeast of King Salmon and 440 km (273 miles) southwest of Anchorage.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS, mcoombs@usgs.gov, (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI, dfee1@alaska.edu, (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at \u003Ca href=\u0022http:\/\/www.avo.alaska.edu\u0022\u003Ehttp:\/\/www.avo.alaska.edu\u003C\/a\u003E.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Earthquake swarm beneath Trident Volcano continues; Aviation Color Code and Volcano Alert Level raised to YELLOW\/ADVISORY","sentUtc":"2022-09-29","obs":"avo","vName":"Trident","vnum":"312160","noticeId":"DOI-USGS-AVO-2022-09-29T07:58:34-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2022-09-29T07:58:34-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2022-09-29T07:58:34-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20220920\/2040Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EShishaldin (VNUM #311360)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUNASSIGNED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2022\/A1045\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E9373 ft (2857 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003ESeveral seismic stations in the Shishaldin network are now operating after being offline over the past year. Data from these stations have improved the Alaska Volcano Observatory's monitoring capability, and allows for location of small local earthquakes. Thus, the Aviation Color Code is now GREEN and the Volcano Alert Level NORMAL. The Alaska Volcano Observatory continues to monitor Shishaldin with the local seismic, infrasound, GPS, and tilt stations, web camera images, remote infrasound and lightning networks, and satellite images.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enot applicable\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enot applicable\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 24 confirmed eruptions since 1775. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS, mcoombs@usgs.gov, (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI, dfee1@alaska.edu, (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Prolonged data outage resolved. Aviation Color Code assigned at GREEN and Volcano Alert Level at NORMAL.","sentUtc":"2022-09-20","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2022-09-20T09:35:39-08:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2022-09-20T09:35:39-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2022-09-20T09:35:39-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20220827\/0218Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EOfu-Olosega (VNUM #244010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2022\/H392\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ES 14 deg 10 min W 169 deg 37 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAmerican Samoa\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2096 ft (639 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EOfu-Olosega Islands volcano has been ruled out as the source of the ongoing Manu\u02bba Islands earthquake swarm. Data from seismometers installed in the Manu\u02bba Islands this week confirms that the ongoing earthquake activity is related to Ta\u02bb\u016b Island volcano and not Ofu-Olosega. Accordingly, the USGS is lowering the volcano alert level to NORMAL and the aviation color code to GREEN for Ofu-Olosega. Ta\u02bb\u016b Island remains at ADVISORY\/YELLOW.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDue to the closeness of the Ofu-Olosega Islands to Ta\u02bb\u016b Island, residents of Ofu-Olosega could still be significantly affected by events that may take place on or around Ta\u02bbu Island. The earthquake swarm is still ongoing, and people on Ofu-Olosega are likely to feel shaking from future events. Residents of Ofu-Olosega can now find updates on relevant hazards and other important information in the Daily Reports for Ta\u02bb\u016b Island. Possible hazards that could impact residents of Ofu-Olosega include shaking related to strong, damaging earthquakes, local tsunamis or large waves related to underwater volcanic activity or landslides, and\/or ash and gas from volcanic eruptions.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EUSGS scientists continue to monitor the earthquake swarm with six microseismometers placed on Tutuila, Ta\u02bb\u016b, and Olosega Islands and two more sensitive seismometers on Ta\u02bb\u016b and Ofu Islands. We are working to bring a third advanced seismometer online on eastern Ta’u Island.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ETo keep receiving information about the ongoing earthquake crisis in American Samoa, subscribe to the Volcano Notification Service (\u003Ca href=\u0022https:\/\/volcanoes.usgs.gov\/vns2\/)\u0022\u003Ehttps:\/\/volcanoes.usgs.gov\/vns2\/)\u003C\/a\u003E\u003Cbr \/\u003Eand select Ta\u02bb\u016b Island from the volcano list.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESamoan and English language alert level and color code definitions: (PDF download, 57.68 kb) \u003Ca href=\u0022https:\/\/www.usgs.gov\/media\/files\/volcano-aviation-codes-and-alert-levels-english-and-samoan\u0022\u003Ehttps:\/\/d9-wret.s3.us-west-2.amazonaws.com\/assets\/palladium\/production\/s3fs-public\/media\/files\/VOLCANO%20AVIATION%20CODES%20AND%20ALERT%20LEVELS.pdf\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazards\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EIt is unclear if this earthquake swarm at Ta\u02bb\u016b will escalate to a volcanic eruption on or near Ta\u02bb\u016b Island. An eruption could pose significant hazards to residents of American Samoa; these hazards include volcanic gases, volcanic ash, low-level localized explosions of lava, lava flows, earthquake shaking, and tsunami. Volcanic gas and ash travel with the wind, and ocean disturbances may be felt across the Manu’a Islands.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EReport what you feel and see.\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EResidents can assist USGS and NWS monitoring efforts by noting and reporting accurate times when they feel earthquake shaking or notice other changes that might be related to volcanic activity to either the NOAA Pago Pago National Weather Service Office (\u003Ca href=\u0022https:\/\/www.weather.gov\/ppg\/wsopagooffice\u0022\u003Ehttps:\/\/www.weather.gov\/ppg\/wsopagooffice\u003C\/a\u003E) or the American Samoa EOC in Pago Pago (684-699-3800).  \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO, \u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E—best contact for regular reporting and questions. \u003Cbr \/\u003EKen Hon, HVO Scientist in Charge, USGS \u003Ca href=\u0022mailto:khon@usgs.gov\u0022\u003Ekhon@usgs.gov\u003C\/a\u003E\u003Cbr \/\u003ENatalia Deligne, American Samoa Lead Responding Scientist, USGS \u003Ca href=\u0022mailto:ndeligne@usgs.gov\u0022\u003Endeligne@usgs.gov\u003C\/a\u003E \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, daily scheduled updates are posted at \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/programs\/VHP\/volcano-updates#hvo\u0022\u003Ehttps:\/\/www.usgs.gov\/programs\/VHP\/volcano-updates#hvo\u003C\/a\u003E. Search for past statements here: \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/volcanoes.usgs.gov\/hans2\/search\u0022\u003Ehttps:\/\/volcanoes.usgs.gov\/hans2\/search\u003C\/a\u003E.  \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Ofu-Olosega ruled out as source of earthquake swarm; downgraded alert level.","sentUtc":"2022-08-27","obs":"hvo","vName":"Ofu-Olosega","vnum":"244010","noticeId":"DOI-USGS-HVO-2022-08-26T17:39:34-07:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2022-08-26T17:39:34-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2022-08-26T17:39:34-07:00","nvewsThreat":"Low Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20220821\/2301Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESemisopochnoi (VNUM #311060)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EYELLOW\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2022\/A927\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2625 ft (800 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EA short-lived explosion occured at 1:47 PM AKDT (21:47 UTC) today that produced ash emissions observed in local webcams. Ash emissions ceased by 2:16 PM AKDT (22:16 UTC). The ash plume was not visible above the meteorological clouds in satellite images, thus was below 20,000 ft. (6 km) above sea level. This event is similar to eruptive activity observed over the last year at Semisopochnoi, but not since June 12. The Aviation Color Code and Volcano Alert Level are being raised to ORANGE\/WATCH.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESmall eruptions producing minor ash deposits within the vicinity of the active north crater of Mount Cerberus and ash clouds usually under 10,000 ft (3 km) above sea level have characterized the recent activity and more ash-producing events could occur again with little warning. \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Eless than 20,000 ft. above sea level \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESemisopochnoi is monitored by a local seismic and infrasound network, local web cameras, regional lightning and infrasound sensors, and satellite data.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS, mcoombs@usgs.gov, (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI, dfee1@alaska.edu, (907) 378-5460\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Explosion and ash plume below 20,000 ft asl observed; Aviation Color Code and Alert Level raised to ORANGE\/WATCH","sentUtc":"2022-08-21","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2022-08-21T14:43:19-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2022-08-21T14:43:19-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2022-08-21T14:43:19-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20220820\/0001Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EOfu-Olosega (VNUM #244010)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2022\/H370\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ES 14 deg 10 min W 169 deg 37 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAmerican Samoa\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2096 ft (639 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EAn earthquake swarm is occurring in the Manu\u02bba Islands of American Samoa. As the federal entity responsible for monitoring earthquakes and volcanoes in American Samoa, the U.S. Geological Survey Hawaiian Volcano Observatory (HVO) is assigning the Ta\u02bb\u016b Island and Ofu-Olosega Volcano Alert Levels to ADVISORY and Aviation Color Codes YELLOW. The designation previously was UNASSIGNED. This designation does not reflect a change in the behavior of either volcano; it simply acknowledges that the number, size, and frequency of earthquakes being felt by people on Ta\u02bb\u016b Island and Ofu-Olosega are well above typical background activity (a NORMAL\/GREEN alert level). The first reports of felt earthquakes occurred on July 26, 2022. Personal reports and instruments installed over the past week confirm the continuation of elevated earthquake activity.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EData analysis from simple earthquake detection equipment installed on Tutuila, Ta\u02bb\u016b, and Ofu-Olosega Islands indicate that the earthquakes are occurring beneath or around the Manu\u02bba Islands, likely closer to Ta\u02bb\u016b rather than Ofu-Olosega. Approximately 20 earthquakes per hour have been recorded for the past several days in the Manu\u02bba Islands. Estimated magnitudes of the largest earthquakes are between magnitude 2 and 3. The USGS will have more information about the source and cause of the earthquakes next week after expanding the monitoring network.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EVolcanoes in the Manu\u02bba Islands are monitored with a limited real-time seismic network consisting of four microseismometers on Tutuila, Ta\u02bb\u016b, and Ofu-Olosega Islands. HVO staff are working with the NOAA Pago Pago National Weather Service Office (NWS) to expand the American Samoa monitoring network. Satellite remote sensing is another tool being used, which may detect heat, volcanic gas, and volcanic ash associated with early phases of volcanic activity.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ECurrent earthquake monitoring is based on the number and relative size of earthquakes and the estimated distance of earthquakes from the microseismometers. Due to the limitations of the current earthquake monitoring equipment, the \u003Cstrong\u003Eexact\u003C\/strong\u003E location, depth, and magnitude of these earthquakes are unknown.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESamoan language alert level and color code definitions: \u003Ca href=\u0022https:\/\/www.usgs.gov\/media\/files\/volcano-aviation-codes-and-alert-levels-english-and-samoan\u0022\u003Ehttps:\/\/www.usgs.gov\/media\/files\/volcano-aviation-codes-and-alert-levels-english-and-samoan\u003C\/a\u003E\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazards\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EIt is unclear if this unrest will escalate to a volcanic eruption. An eruption could pose significant hazards to residents of American Samoa; these hazards include volcanic gases, low-level localized explosions of lava, lava flows, earthquake shaking, and tsunami. Information about these hazards, which are like those in Hawaii, can be found at this HVO website: \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/hazards.\u003C\/a\u003E The primary hazard of concern is earthquake shaking, although no damaging earthquakes have occurred as part of this swarm. For information on how to prepare for an earthquake, see \u003Ca href=\u0022https:\/\/www.usgs.gov\/faqs\/what-can-i-do-be-prepared-earthquake\u0022\u003Ehttps:\/\/www.usgs.gov\/faqs\/what-can-i-do-be-prepared-earthquake\u003C\/a\u003E. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cem\u003EI\u003C\/em\u003E\u003Cem\u003Ef you\u003C\/em\u003E\u003Cem\u003E feel shaking and are not near the coast, immediately \u003C\/em\u003E\u003Ca href=\u0022https:\/\/www.shakeout.org\/dropcoverholdon\/\u0022\u003E\u003Cem\u003Edrop, cover, and hold on\u003C\/em\u003E\u003C\/a\u003E\u003Cem\u003E until the shaking stops. If you are at the coast, heed the natural tsunami warning signs. If you feel a strong or long-duration earthquake, see a sudden rise or fall of the ocean, hear a loud roar from the ocean, or see a large aerial plume from an eruption, a tsunami may follow, and you should immediately move to higher ground.  \u003C\/em\u003EPacific Tsunami Warning Center:\u003Cem\u003E \u003C\/em\u003E\u003Ca href=\u0022https:\/\/tsunami.gov\/\u0022\u003Ehttps:\/\/tsunami.gov\/\u003C\/a\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EReport what you feel and see.\u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EResidents can assist USGS and NWS monitoring efforts by noting and reporting accurate times when they feel earthquake shaking or notice other changes that might be related to volcanic activity to either the NOAA Pago Pago National Weather Service Office (\u003Ca href=\u0022https:\/\/www.weather.gov\/ppg\/wsopagooffice\u0022\u003Ehttps:\/\/www.weather.gov\/ppg\/wsopagooffice\u003C\/a\u003E) or the American Samoa EOC in Pago Pago (684-699-3800).  \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO, \u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E—best contact for regular reporting and questions. \u003Cbr \/\u003EKen Hon, HVO Scientist in Charge, USGS \u003Ca href=\u0022mailto:khon@usgs.gov\u0022\u003Ekhon@usgs.gov\u003C\/a\u003E\u003Cbr \/\u003ENatalia Deligne, American Samoa Lead Responding Scientist, USGS \u003Ca href=\u0022mailto:ndeligne@usgs.gov\u0022\u003Endeligne@usgs.gov\u003C\/a\u003E \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, daily scheduled updates are posted at \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/programs\/VHP\/volcano-updates#hvo\u0022\u003Ehttps:\/\/www.usgs.gov\/programs\/VHP\/volcano-updates#hvo\u003C\/a\u003E. Search for past statements here: \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/volcanoes.usgs.gov\/hans2\/search\u0022\u003Ehttps:\/\/volcanoes.usgs.gov\/hans2\/search\u003C\/a\u003E.  \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Earthquake swarm continues in Manu\u02bba Islands, American Samoa.","sentUtc":"2022-08-20","obs":"hvo","vName":"Ofu-Olosega","vnum":"244010","noticeId":"DOI-USGS-HVO-2022-08-19T16:50:31-07:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2022-08-19T16:50:31-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2022-08-19T16:50:31-07:00","nvewsThreat":"Low Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20220820\/0000Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ETa'u Island (VNUM #244001)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUNASSIGNED\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EHawaiian Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2022\/H369\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ES 14 deg 13 min W 169 deg 27 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAmerican Samoa\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E3054 ft (931 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003EAn earthquake swarm is occurring in the Manu\u02bba Islands of American Samoa. As the federal entity responsible for monitoring earthquakes and volcanoes in American Samoa, the U.S. Geological Survey Hawaiian Volcano Observatory (HVO) is assigning the Ta\u02bb\u016b Island and Ofu-Olosega Volcano Alert Levels to ADVISORY and Aviation Color Codes YELLOW. The designation previously was UNASSIGNED. This designation does not reflect a change in the behavior of either volcano; it simply acknowledges that the number, size, and frequency of earthquakes being felt by people on Ta\u02bb\u016b Island and Ofu-Olosega are well above typical background activity (a NORMAL\/GREEN alert level). The first reports of felt earthquakes occurred on July 26, 2022. Personal reports and instruments installed over the past week confirm the continuation of elevated earthquake activity.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EData analysis from simple earthquake detection equipment installed on Tutuila, Ta\u02bb\u016b, and Ofu-Olosega Islands indicate that the earthquakes are occurring beneath or around the Manu\u02bba Islands, likely closer to Ta\u02bb\u016b rather than Ofu-Olosega. Approximately 20 earthquakes per hour have been recorded for the past several days in the Manu\u02bba Islands. Estimated magnitudes of the largest earthquakes are between magnitude 2 and 3.\u202fThe USGS will have more information about the source and cause of the earthquakes next week after expanding the monitoring network. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EVolcanoes in the Manu\u02bba Islands are monitored with a limited real-time seismic network consisting of four microseismometers on Tutuila, Ta\u02bb\u016b, and Ofu-Olosega Islands. HVO staff are working with the NOAA Pago Pago National Weather Service Office (NWS) to expand the American Samoa monitoring network. Satellite remote sensing is another tool being used, which may detect heat, volcanic gas, and volcanic ash associated with early phases of volcanic activity. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ECurrent earthquake monitoring is based on the number and relative size of earthquakes and the estimated distance of earthquakes from the microseismometers. Due to the limitations of the current earthquake monitoring equipment, the exact location, depth, and magnitude of these earthquakes are unknown.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESamoan language alert level and color code definitions:\u202f\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/media\/files\/volcano-aviation-codes-and-alert-levels-english-and-samoan\u0022\u003Ehttps:\/\/www.usgs.gov\/media\/files\/volcano-aviation-codes-and-alert-levels-english-and-samoan\u003C\/a\u003E \u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EHazards \u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EIt is unclear if this unrest will escalate to a volcanic eruption. An eruption could pose significant hazards to residents of American Samoa; these hazards include volcanic gases, low-level localized explosions of lava, lava flows, earthquake shaking, and tsunami.\u202fInformation about these hazards, which are like those in Hawaii, can be found at this HVO website:\u202f\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/observatories\/hvo\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hvo\/hazards.\u003C\/a\u003E\u202fThe primary hazard of concern is earthquake shaking, although no damaging earthquakes have occurred as part of this swarm. For information on how to prepare for an earthquake, see\u202f\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/faqs\/what-can-i-do-be-prepared-earthquake\u0022\u003Ehttps:\/\/www.usgs.gov\/faqs\/what-can-i-do-be-prepared-earthquake\u003C\/a\u003E.\u202f \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EIf you feel shaking and are not near the coast, immediately\u202f\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.shakeout.org\/dropcoverholdon\/\u0022\u003Edrop, cover, and hold on\u003C\/a\u003E\u202funtil the shaking stops.\u202fIf you are at the coast, heed the natural tsunami warning signs.\u202fIf you feel a strong or long-duration earthquake, see a sudden rise or fall of the ocean, hear a loud roar from the ocean, or see a large aerial plume from an eruption, a tsunami may follow, and you should immediately move to higher ground.\u202f Pacific Tsunami Warning Center:\u202f\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/tsunami.gov\/\u0022\u003Ehttps:\/\/tsunami.gov\/\u003C\/a\u003E \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003E\u003Cstrong\u003EReport what you feel and see. \u003C\/strong\u003E\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EResidents can assist USGS and NWS monitoring efforts by noting and reporting accurate times when they feel earthquake shaking or notice other changes that might be related to volcanic activity to either the NOAA Pago Pago National Weather Service Office (\u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.weather.gov\/ppg\/wsopagooffice\u0022\u003Ehttps:\/\/www.weather.gov\/ppg\/wsopagooffice\u003C\/a\u003E) or the American Samoa EOC in Pago Pago (684-699-3800).\u202f\u202f \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EHVO, \u003Ca href=\u0022mailto:askHVO@usgs.gov\u0022\u003EaskHVO@usgs.gov\u003C\/a\u003E—best contact for regular reporting and questions. \u003Cbr \/\u003EKen Hon, HVO Scientist in Charge, USGS \u003Ca href=\u0022mailto:khon@usgs.gov\u0022\u003Ekhon@usgs.gov\u003C\/a\u003E\u003Cbr \/\u003ENatalia Deligne, American Samoa Lead Responding Scientist, USGS \u003Ca href=\u0022mailto:ndeligne@usgs.gov\u0022\u003Endeligne@usgs.gov\u003C\/a\u003E\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, daily scheduled updates are posted at \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/www.usgs.gov\/programs\/VHP\/volcano-updates#hvo\u0022\u003Ehttps:\/\/www.usgs.gov\/programs\/VHP\/volcano-updates#hvo\u003C\/a\u003E. Search for past statements here: \u003Ca target=\u0022_blank\u0022 href=\u0022https:\/\/volcanoes.usgs.gov\/hans2\/search\u0022\u003Ehttps:\/\/volcanoes.usgs.gov\/hans2\/search\u003C\/a\u003E.   \u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"Earthquake swarm continues in Manu\u02bba Islands, American Samoa.","sentUtc":"2022-08-20","obs":"hvo","vName":"Ta'u Island","vnum":"244001","noticeId":"DOI-USGS-HVO-2022-08-19T16:30:03-07:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2022-08-19T16:30:03-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2022-08-19T16:30:03-07:00","nvewsThreat":"Low Threat"},{"noticeHtml":"\u003Cstyle\u003E.hans-td { padding: .25em; } .hans-paragraph { margin-top: 0; margin-bottom: 1em; }\u003C\/style\u003E\n            \u003Ctable\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 colspan=\u00222\u0022\u003E(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(20220708\/1703Z)\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESemisopochnoi (VNUM #311060)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EORANGE\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAlaska Volcano Observatory\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2022\/A744\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003EAleutians\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E2625 ft (800 m)\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\n                        \u003Cspan name=\u0022summary\u0022\u003E\n                            \u003Cp class=\u0022hans-paragraph\u0022\u003ENo ash emissions or explosive activity have been detected at Semisopochnoi since June 12. Seismic activity continues, but at low levels. Thus the Aviation Color Code and Volcano Alert Level are being lowered to YELLOW\/ADVISORY.  \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESteaming and sulfur dioxide emissions from the active north crater of Mount Cerberus continue.\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESmall eruptions producing minor ash deposits within the vicinity of the active north crater of Mount Cerberus and ash clouds usually under 10,000 ft (3 km) above sea level have characterized the recent activity and could begin again with little warning. \u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESemisopochnoi is monitored by local seismic and infrasound sensors, satellite data, web cameras, and remote infrasound and lightning networks.\u003C\/p\u003E\n                        \u003C\/span\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003Enone since June 12, 2022\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003ESteam and sulfur dioxide emissions from the active north crater of Mount Cerberus continue\u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003ESemisopochnoi is monitored by a local seismic and infrasound network, local web cameras, regional lightning and infrasound sensors, and satellite data.\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS mcoombs@usgs.gov (907) 786-7497\u003C\/p\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 322-4085\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n                \u003Ctr\u003E\n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E \n                    \u003Ctd class=\u0022hans-td\u0022 valign=\u0022top\u0022\u003E\u003Cp class=\u0022hans-paragraph\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/p\u003E\n                    \u003C\/td\u003E\n                \u003C\/tr\u003E\n            \u003C\/table\u003E","noticeSynopsis":"No ash emissions observed since June 12; Aviation Color Code and Alert Level lowered to YELLOW\/ADVISORY","sentUtc":"2022-07-08","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2022-07-07T12:24:20-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2022-07-07T12:24:20-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2022-07-07T12:24:20-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003Etd { padding: .25em; }\u003C\/style\u003E\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20220511\/0019Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            UNASSIGNED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2022\/A502\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003E\u003Cp\u003EElevated surface temperatures and sulfur dioxide emissions have been detected in satellite data over the past couple of days, representing a departure from background activity. AVO is increasing the Aviation Color Code and Volcano Alert Level from YELLOW\/ADVISORY. \u003C\/p\u003E\u003Cp\u003ECleveland volcano is monitored with a limited real-time seismic network. This smaller network inhibits AVO's ability to detect precursory unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data. Eruptions from Cleaveland typically generate small clouds of volcanic ash that are a hazard in the immediate vicinity of the volcano, though more significant ash emissions are possible.\u003C\/p\u003E\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cp\u003ECleveland volcano forms the western portion of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. The volcano is located about 45 miles (75 km) west of the community of Nikolski, and 940 miles (1500 km) southwest of Anchorage. The most recent significant period of eruption began in February 2001 and produced 3 explosive events that generated ash clouds as high as 39,000 ft (11.8 km) above sea level. The 2001 eruption also produced a lava flow and hot avalanche that reached the sea. Since then, Cleveland has been intermittently active producing small lava flows, often followed by explosions that generate small ash clouds generally below 20,000 ft (6 km) above sea level. These explosions also launch debris onto the slopes of the cone producing hot pyroclastic avalanches and lahars that sometimes reach the coastline.\u003C\/p\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS mcoombs@usgs.gov (907) 786-7497; Tarsilo Girona, Acting Coordinating Scientist, UAFGI tarsilo.girona@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Aviation color code and alert level moved to YELLOW\/ADVISORY due to elevated surface temperatures and sulfur dioxide emissions.","sentUtc":"2022-05-11","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2022-05-10T09:24:12-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2022-05-10T09:24:12-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2022-05-10T09:24:12-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003Etd { padding: .25em; }\u003C\/style\u003E\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20220422\/0102Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EDavidof  (VNUM #311040)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2022\/A443\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 57 min E 178 deg 19 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E1076 ft (328 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA swarm of earthquakes near Davidof volcano that began in late January 2022 has been in a slow decline over the past few weeks.   Thus, the Aviation Color Code and Alert Level are being decreased to UNASSIGNED\/UNASSIGNED.  AVO only assigns color code and alert level values to volcanoes that are sufficiently instrumented to allow us to understand the background state of activity.  The closest seismometers to Davidof are approximately 15 km to the east of the volcano on Little Sitkin Island, and are insufficient to allow us to confirm the volcano is at background. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nA similar earthquake swarm occurred in December 2021.  No signs of unrest associated with either swarm have been observed in satellite images of the volcano.  The earthquake activity may be associated with volcanic unrest, or could be due to tectonic activity.      \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EDavidof volcano is a mostly submerged stratovolcano in the Rat Islands group in the western Aleutian Islands, about 350 km west of Adak. The subaerial part of the volcano comprises Davidof, Khvostof, Pyramid, and Lopy islands, which encircle Crater Bay, a 2.5 km diameter caldera. The islands are built up from interbedded lava flows and explosive deposits. The volcano has been sparsely studied, but visits by Alaska Volcano Observatory geologists in 2021 documented thick sequences of rhyolite to dacite pyroclastic flow and fall deposits that represent the most recent explosive eruptions. The age of these deposits is unknown, but they appear older than Holocene deposits from nearby Segula and Little Sitkin. There are no known historical eruptions from Davidof.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS, mcoombs@usgs.gov, (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI, dfee1@alaska.edu, (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Aviation color code and alert level changed to UNASSIGNED\/UNASSIGNED","sentUtc":"2022-04-22","obs":"avo","vName":"Davidof","vnum":"311040","noticeId":"DOI-USGS-AVO-2022-04-21T17:01:45-08:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2022-04-21T17:01:45-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2022-04-21T17:01:45-08:00","nvewsThreat":"Low Threat"},{"noticeHtml":"\u003Cstyle\u003Etd { padding: .25em; }\u003C\/style\u003E\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20220422\/0059Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EDavidof  (VNUM #311040)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2022\/A434\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 57 min E 178 deg 19 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E1076 ft (328 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA swarm of earthquakes near Davidof volcano that began in late January 2022 has been in a slow decline over the past few weeks.   Thus, the Aviation Color Code and Alert Level are being decreased to UNASSIGNED\/UNASSIGNED.  AVO only assigns color code and alert level values to volcanoes that are sufficiently instrumented to allow us to understand the background state of activity.  The closest seismometers to Davidof are approximately 15 km to the east of the volcano on Little Sitkin Island, and are insufficient to allow us to confirm the volcano is at background. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nA similar earthquake swarm occurred in December 2021.  No signs of unrest associated with either swarm have been observed in satellite images of the volcano.  The earthquake activity may be associated with volcanic unrest, or could be due to tectonic activity.      \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EDavidof volcano is a mostly submerged stratovolcano in the Rat Islands group in the western Aleutian Islands, about 350 km west of Adak. The subaerial part of the volcano comprises Davidof, Khvostof, Pyramid, and Lopy islands, which encircle Crater Bay, a 2.5 km diameter caldera. The islands are built up from interbedded lava flows and explosive deposits. The volcano has been sparsely studied, but visits by Alaska Volcano Observatory geologists in 2021 documented thick sequences of rhyolite to dacite pyroclastic flow and fall deposits that represent the most recent explosive eruptions. The age of these deposits is unknown, but they appear older than Holocene deposits from nearby Segula and Little Sitkin. There are no known historical eruptions from Davidof.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS, mcoombs@usgs.gov, (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI, dfee1@alaska.edu, (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Aviation color code and alert level changed to UNASSIGNED\/UNASSIGNED","sentUtc":"2022-04-22","obs":"avo","vName":"Davidof","vnum":"311040","noticeId":"DOI-USGS-AVO-2022-04-19T15:20:26-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2022-04-19T15:20:26-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2022-04-19T15:20:26-08:00","nvewsThreat":"Low Threat"},{"noticeHtml":"\u003Cstyle\u003Etd { padding: .25em; }\u003C\/style\u003E\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20220126\/1907Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EDavidof  (VNUM #311040)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            UNASSIGNED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2022\/A79\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 57 min E 178 deg 19 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E1076 ft (328 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EOver the past two days a swarm of earthquakes has occurred in the vicinity of Davidof volcano. The largest earthquake in the current sequence happened yesterday at 4:02 PM AKST (January 26, 01:02 UTC) and had a magnitude of 4.9. A similar earthquake swarm occurred in December 2021. No signs of unrest have been observed in recent satellite images of the volcano. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThis earthquake activity may be associated with volcanic unrest, or could be due to regional tectonic activity. Due to the possibility of escalating volcanic unrest, AVO is raising the Aviation Color Code and Volcano Alert Level for Davidof to YELLOW\/ADVISORY. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO continues to monitor the situation with seismometers deployed on nearby islands since there is no real-time seismic monitoring network at Davidof volcano. The closest seismometers to Davidof are approximately 15 km to the east of the volcano on Little Sitkin Island.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EDavidof volcano is a mostly submerged stratovolcano in the Rat Islands group in the western Aleutian Islands, about 350 km west of Adak. The subaerial part of the volcano comprises Davidof, Khvostof, Pyramid, and Lopy islands, which encircle Crater Bay, a 2.5 km diameter caldera. The islands are built up from interbedded lava flows and explosive deposits. The volcano has been sparsely studied, but visits by Alaska Volcano Observatory geologists in 2021 documented thick sequences of rhyolite to dacite pyroclastic flow and fall deposits that represent the most recent explosive eruptions. The age of these deposits is unknown, but they appear older than Holocene deposits from nearby Segula and Little Sitkin. There are no known historical eruptions from Davidof.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS, mcoombs@usgs.gov, (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF, dfee1@alaska.edu, (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Aviation color code and alert level increased to YELLOW\/ADVISORY due to increased earthquake activity.","sentUtc":"2022-01-26","obs":"avo","vName":"Davidof","vnum":"311040","noticeId":"DOI-USGS-AVO-2022-01-26T08:51:50-09:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2022-01-26T08:51:50-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2022-01-26T08:51:50-09:00","nvewsThreat":"Low Threat"},{"noticeHtml":"\u003Cstyle\u003Etd { padding: .25em; }\u003C\/style\u003E\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20211229\/2111Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EDavidof  (VNUM #311040)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A1184\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 57 min E 178 deg 19 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E1076 ft (328 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe swarm of earthquakes that occurred in the vicinity of Davidof volcano beginning in early December has subsided. Thus, the Aviation Color Code and Alert Level is being decreased to UNASSIGNED\/UNASSIGNED. AVO only assigns color code and alert level values to volcanoes that are sufficiently instrumented to allow us to understand the background state of activity. The closest seismometers to Davidof are approximately 15 km to the east of the volcano on Little Sitkin Island, and are insufficient to allow us to assign specific alert levels. Thus, UNASSIGNED is used.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EDavidof volcano is a mostly submerged stratovolcano in the Rat Islands group in the western Aleutian Islands, about 350 km west of Adak. The subaerial part of the volcano comprises Davidof, Khvostof, Pyramid, and Lopy islands, which encircle Crater Bay, a 2.5 km diameter caldera. The islands are built up from interbedded lava flows and explosive deposits. The volcano has been sparsely studied, but visits by Alaska Volcano Observatory geologists in 2021 documented thick sequences of rhyolite to dacite pyroclastic flow and fall deposits that represent the most recent explosive eruptions. The age of these deposits is unknown, but they appear older than Holocene deposits from nearby Segula and Little Sitkin. There are no known historical eruptions from Davidof.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS, mcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAFGI, peizbekov@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Aviation color code and alert level decreased to UNASSIGNED\/UNASSIGNED due to decreased earthquake activiity.","sentUtc":"2021-12-29","obs":"avo","vName":"Davidof","vnum":"311040","noticeId":"DOI-USGS-AVO-2021-12-29T11:34:06-09:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-12-29T11:34:06-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-12-29T11:34:06-09:00","nvewsThreat":"Low Threat"},{"noticeHtml":"\u003Cstyle\u003Etd { padding: .25em; }\u003C\/style\u003E\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20211210\/2138Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EDavidof  (VNUM #311040)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A1108\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 57 min E 178 deg 19 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E1076 ft (328 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EOver the past three days a swarm of earthquakes has occurred in the vicinity of Davidof volcano. The largest earthquake to date happened this morning at about 19:45 UTC (10:45 am AKST) and had a magnitude of 4.2. This swarm may be associated with volcanic unrest or it could also be due to regional tectonic activity. Due to the possibility of escalating volcanic unrest, AVO is raising the Aviation Color Code and Volcano Alert Level for Davidof to YELLOW\/ADVISORY. AVO is continuing to monitor the situation with seismometers deployed on nearby islands since there is no real-time seismic monitoring network at Davidof volcano. The closest seismometers to Davidof are approximately 15 km to the east of the volcano on Little Sitkin Island.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Eno cloud present\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Eno cloud present\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EDavidof volcano is a mostly submerged stratovolcano in the Rat Islands group in the western Aleutian Islands, about 350 km west of Adak. The subaerial part of the volcano comprises Davidof, Khvostof, Pyramid, and Lopy islands, which encircle Crater Bay, a 2.5 km diameter caldera. The islands are built up from interbedded lava flows and explosive deposits. The volcano has been sparsely studied, but visits by Alaska Volcano Observatory geologists in 2021 documented thick sequences of rhyolite to dacite pyroclastic flow and fall deposits that represent the most recent explosive eruptions. The age of these deposits is unknown, but they appear older than Holocene deposits from nearby Segula and Little Sitkin. There are no known historical eruptions from Davidof.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS, mcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF, dfee1@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Swarm of earthquakes in vicinity of Davidof may be associated with volcanic unrest ","sentUtc":"2021-12-10","obs":"avo","vName":"Davidof","vnum":"311040","noticeId":"DOI-USGS-AVO-2021-12-10T12:22:29-09:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-12-10T12:22:29-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-12-10T12:22:29-09:00","nvewsThreat":"Low Threat"},{"noticeHtml":"\u003Cstyle\u003Etd { padding: .25em; }\u003C\/style\u003E\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20211020\/2309Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin  (VNUM #311360)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A949\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E9373 ft (2857 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe Shishaldin Volcano monitoring network has several outages affecting local GPS, seismic, and infrasound stations that are likely to persist through the winter months. Due to the impaired local monitoring stations, the Alaska Volcano Observatory is changing the Aviation Color Code and the Volcano Alert Level to UNASSIGNED\/UNASSIGNED. \u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\nThe Alaska Volcano Observatory continues to monitor Shishaldin with seismic, GPS, and infrasound instruments on nearby networks, as well as with Cold Bay web camera imagery and satellite data.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin Volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 24 confirmed eruptions since 1775. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS, mcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF, dfee1@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Prolonged data outage; Alert Levels to UNASSIGNED\/UNASSIGNED","sentUtc":"2021-10-20","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2021-10-20T13:30:55-08:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-10-20T13:30:55-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-10-20T13:30:55-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003Etd { padding: .25em; }\u003C\/style\u003E\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20211020\/2304Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A950\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA sustained decline in volcanic unrest at Cleveland volcano over the past few months has prompted the Alaska Volcano Observatory to downgrade the Aviation Color Code and Volcano Alert Level from YELLOW\/ADVISORY to UNASSIGNED\/UNASSIGNED. \u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\nElevated seismicity, deformation within the summit crater, and thermal and gas emissions prompted raising the Aviation Color Code and Volcano Alert Level from UNASSIGNED\/UNASSIGNED to YELLOW\/ADVISORY on March 20, 2021. This activity continued over the summer, but all signs of unrest have ceased or declined in recent months. Elevated surface temperatures in the summit crater are still being observed at reduced frequency and strength. The last eruptive activity at Cleveland volcano was a short-lived explosion on the evening (local time) of June 1, 2020. \u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\nDespite the current pause, the eruptive period at Cleveland, dating back to 2001, remains ongoing and future explosions are likely. These occur without warning and typically generate small clouds of volcanic ash that are a hazard in the immediate vicinity of the volcano, though more significant ash emissions are possible. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCleveland volcano is monitored with a limited real-time seismic network. This smaller network inhibits AVO's ability to detect precursory unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western portion of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. The volcano is located about 45 miles (75 km) west of the community of Nikolski, and 940 miles (1500 km) southwest of Anchorage. The most recent significant period of eruption began in February 2001 and produced 3 explosive events that generated ash clouds as high as 39,000 ft (11.8 km) above sea level. The 2001 eruption also produced a lava flow and hot avalanche that reached the sea. Since then, Cleveland has been intermittently active producing small lava flows, often followed by explosions that generate small ash clouds generally below 20,000 ft (6 km) above sea level. These explosions also launch debris onto the slopes of the cone producing hot pyroclastic avalanches and lahars that sometimes reach the coastline. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS, mcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF, dfee1@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Decline in seismic unrest, deformation, and thermal emissions; Alert levels to UNASSIGNED\/UNASSIGNED","sentUtc":"2021-10-20","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2021-10-20T13:41:59-08:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-10-20T13:41:59-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-10-20T13:41:59-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003Etd { padding: .25em; }\u003C\/style\u003E\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20211005\/0252Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EKilauea  (VNUM #332010)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tHawaiian Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/H273\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tHawaii\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E4091 ft (1247 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EK\u012blauea\u202fvolcano is erupting. At\u202fapproximately 3:21 p.m. HST on\u202fSeptember 29, 2021, an eruption began within\u202fHalema\u02bbuma\u02bbu\u202fcrater, within K\u012blauea\u2019s\u202fsummit caldera in Hawai\u2018i Volcanoes National Park. The USGS Hawaiian Volcano Observatory (HVO)\u202felevated\u202fK\u012blauea\u2019s\u202fvolcano alert level to WARNING and its aviation color code to RED\u202fto assess the\u202fintensity of eruptive\u202factivity and\u202fidentify\u202fassociated hazards.\u202f\u202f \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nVigorous fountaining\u2014with bursts up to 50\u201360 meters (164\u2013197 ft)\u2014produced significant amounts of pumice, Pele\u02bbs hair, and fragments of volcanic glass that were deposited in areas downwind along the rim and beyond Halema\u02bbuma\u02bbu crater. Over the past several days, a thick layer (approximately 27 meters or 89 ft) of molten lava has accumulated as a lava lake at the base of the crater, partially drowning the vents resulting in subdued fountaining. During the same time, the amount of sulfur dioxide (SO2) emitted has dropped from 85,000 tons per day (one metric ton equals 2,200 pounds) to 12,000 tons a day. Although the amount of gas and volcanic particle production has decreased since the eruption onset, they both  remain significant local hazards within the plume. Concentrations of SO2 at the vents remain high (likely over 100 parts per million or ppm) and significantly elevated (5-10 ppm) at stations a few kilometers (a couple of miles) southwest of Halema\u02bbuma\u02bbu.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe eruption is currently confined to\u202fHalema\u02bbuma\u02bbu\u202fcrater,\u202fwithin\u202fHawai\u2018i Volcanoes National Park.\u202f\u202fHVO does not see any indication of activity migrating elsewhere on K\u012blauea volcano \u202fand expects the eruption to remain confined to\u202fthe summit region.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHVO\u202fis\u202flowering\u202fK\u012blauea\u2019s\u202fvolcano alert level to WATCH and its aviation color code to ORANGE, reflecting the less-hazardous nature of the ongoing eruption.\u202f \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFor more information on gas hazards at the summit of\u202fK\u012blauea, please see:\u202f\u003Ca href=\u0022https:\/\/pubs.er.usgs.gov\/publication\/fs20173017\u0022\u003Ehttps:\/\/pubs.er.usgs.gov\/publication\/fs20173017\u003C\/a\u003E \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFor more information about volcanic ash hazards and precautions at\u202fK\u012blauea, please see:\u202f\u003Ca href=\u0022http:\/\/hvo.wr.usgs.gov\/hazards\/FAQ_SO2-Vog-Ash\/main.html\u0022\u003Ehttp:\/\/hvo.wr.usgs.gov\/hazards\/FAQ_SO2-Vog-Ash\/main.html\u003C\/a\u003E\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E1000\u20132000 meters (3280\u20136562 ft) \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPlume composed of SO2 and H2O with minor volcanic particles \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EPrognosis:\u202f\u003C\/b\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nIt is unclear how long the current eruption will continue.\u202fK\u012blauea\u202fsummit eruptions over the past 200 years have lasted from less than a day to more than a decade. This ongoing eruption\u202fis similar to the most recent K\u012blauea eruption, which was also confined to\u202fHalema\u02bbuma\u02bbu\u202fcrater and generated a lava lake; the most recent eruption lasted approximately five months, from December 2020 to May 2021.\u202f\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHVO is in constant communication with the National Park Service and Hawai\u2018i County Civil Defense and other agencies responsible for public safety.\u202f \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHVO scientists will continue to monitor K\u012blauea volcano closely and will issue additional messages as warranted by changing activity. Stay informed about K\u012blauea by following volcano updates and tracking current monitoring data on the HVO web page at \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates\u003C\/a\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cu\u003EMore Information:\u003C\/u\u003E\u003Cbr \/\u003E\r\nK\u012blauea activity summary also available by phone: (808) 967-8862\u003Cbr \/\u003E\r\nK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003Cbr \/\u003E\r\nK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u003C\/a\u003E\u003Cbr \/\u003E\r\nK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003Cbr \/\u003E\r\nK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cu\u003EHazard Analysis:\u202f\u003C\/u\u003E\u003Cbr \/\u003E\r\n\u202f \u003Cbr \/\u003E\r\nThis new eruption at\u202fK\u012blauea\u2019s\u202fsummit is occurring within a closed area of Hawai\u02bbi Volcanoes National Park. Therefore, high levels of volcanic gas and fine volcanic particles are the primary hazards of concern, as these hazards can have far-reaching\u202feffects downwind.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nLarge amounts of volcanic gas\u2014including carbon dioxide (CO2) and sulfur dioxide (SO2)\u2014are continuously released during eruptions of\u202fK\u012blauea\u202fvolcano. Concentrations of SO2 can be much greater than recommended exposure levels on Halema\u02bbuma\u02bbu rim and extending several kilometers downwind; exposure to these elevated SO2 levels is considered hazardous and may cause breathing difficulties. Additional hazards include Pele's hair and other lightweight volcanic glass fragments from the lava fountains that can be entrained in the plume and fall several kilometers (miles) downwind of the fissure vents. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nStrong winds may waft lighter particles to greater distances and impact surrounding communities. Residents should minimize exposure to fine volcanic particles, which can cause skin and eye irritation.\u202f\u202fAs the SO2 plume moves away from the vent, it reacts in the atmosphere to create the visible haze known as\u202fvog\u202f(volcanic air pollution) that has been observed downwind of\u202fK\u012blauea.\u202fVog\u202fcreates the potential for airborne health hazards to residents and visitors, damages agricultural crops and other plants, and affects livestock.\u202fFor more information on gas hazards at\u202fthe summit of\u202fK\u012blauea, please see:\u202f\u003Ca href=\u0022https:\/\/pubs.er.usgs.gov\/publication\/fs20173017\u0022\u003Ehttps:\/\/pubs.er.usgs.gov\/publication\/fs20173017\u003C\/a\u003E.\u202fVog\u202finformation can be found at\u202f\u003Ca href=\u0022https:\/\/vog.ivhhn.org\/\u0022\u003Ehttps:\/\/vog.ivhhn.org\/\u003C\/a\u003E.\u202f\u202f \u003Cbr \/\u003E\r\n\u202f \u003Cbr \/\u003E\r\nOther significant hazards also remain around\u202fK\u012blauea\u202fcaldera\u202ffrom\u202fHalema\u02bbuma\u02bbu\u202fcrater wall; ground instability, ground cracking, and rockfalls can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u202f\u202f \u003Cbr \/\u003E\r\n\u202f \u003Cbr \/\u003E\r\nFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E.\u003Cbr \/\u003E\r\n\u202f \u003Cbr \/\u003E\r\nPlease\u202fsee the\u202fHawai\u02bbi\u202fVolcanoes National Park website for visitor information:\u202f\u003Ca href=\u0022https:\/\/www.nps.gov\/havo\/index.htm\u0022\u003Ehttps:\/\/www.nps.gov\/havo\/index.htm\u003C\/a\u003E.\u202fVisitors to Hawai\u02bbi Volcanoes National Park should note that under southerly (non-trade) wind conditions, there is potential for ashfall\u2014a dusting of powdery to gritty ash composed of volcanic glass and rock fragments. These ashfalls represent a minor hazard, but visitors should be aware that dustings of ash at areas around the\u202fK\u012blauea\u202fsummit are possible.\u202f\u202f \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EaskHVO@usgs.gov\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe Hawaiian Volcano Observatory (HVO) continues to closely monitor K\u012blauea's seismicity, deformation, and gas emissions for any changes in activity. K\u012blauea\u202fupdates will be issued daily. Should volcanic activity change significantly a new VAN will be issued. Regularly scheduled updates are posted at\u202f\u003Ca href=\u0022https:\/\/www.usgs.gov\/hvo\u0022\u003Ehttps:\/\/www.usgs.gov\/hvo\u003C\/a\u003E.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSubscribe to these messages: \u003Cbr \/\u003E\r\n\u003Ca href=\u0022https:\/\/volcanoes.usgs.gov\/vns2\/\u0022\u003Ehttps:\/\/volcanoes.usgs.gov\/vns2\/\u003C\/a\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nRecent earthquakes in Hawai\u02bbi (map and list): \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/earthquakes\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/earthquakes\u003C\/a\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nExplanation of Volcano Alert Levels and Aviation Color Codes: \u003Ca href=\u0022https:\/\/www.usgs.gov\/natural-hazards\/volcano-hazards\/about-alert-levels\u0022\u003Ehttps:\/\/www.usgs.gov\/natural-hazards\/volcano-hazards\/about-alert-levels\u003C\/a\u003E \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"RED\/WARNING status change to ORANGE\/WATCH.\u202fK\u012blauea\u202fis erupting within\u202fHalema\u02bbuma\u02bbu\u202fcrater in\u202fK\u012blauea\u2019s\u202fsummit caldera. The eruptive vents have stabilized and pose no threats to the surrounding communities.","sentUtc":"2021-10-05","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2021-10-04T16:59:20-07:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2021-10-04T16:59:20-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2021-10-04T16:59:20-07:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003Etd { padding: .25em; }\u003C\/style\u003E\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210930\/0142Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EKilauea  (VNUM #332010)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tHawaiian Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/H262\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tHawaii\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E4091 ft (1247 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EK\u012blauea\u202fvolcano is erupting. At approximately 3:20 p.m. HST on September 29, 2021, the USGS Hawaiian Volcano Observatory (HVO) detected glow in\u202fK\u012blauea\u202fsummit webcam images indicating that an eruption has commenced within Halema\u02bbuma\u02bbu crater in K\u012blauea\u2019s\u202fsummit caldera, within Hawai\u2018i Volcanoes National Park. Webcam imagery shows fissures at the base of Halema\u02bbuma\u02bbu crater generating lava flows on the surface of the lava lake that was active until May 2021.    \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe US Geological Survey Hawaiian Volcano Observatory (HVO) is elevating\u202fK\u012blauea\u2019s\u202fvolcano alert level to from WATCH to WARNING and its aviation color code from ORANGE to RED as this\u202fnew eruption and associated hazards are evaluated.\u202f\u202f The activity is confined to Halema\u02bbuma\u02bbu and the hazards will be reassessed as the eruption progresses. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nUSGS volcano alert levels and aviation color codes are explained here:\u202fhttps:\/\/www.usgs.gov\/natural-hazards\/volcano-hazards\/about-alert-levels\u202f\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe opening phases of eruptions are dynamic and uncertain. HVO continues to monitor the volcano closely and will report any significant changes in future notices.\u202f\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nStay informed about\u202fK\u012blauea\u202fby following volcano updates and tracking current monitoring data on the HVO web page (https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates) or by signing up to receive updates by email at this site:\u202fhttps:\/\/volcanoes.usgs.gov\/vns2\/.\u202f \u003Cbr \/\u003E\r\n\u202f \u003Cbr \/\u003E\r\nHVO is in constant communication with Hawai\u2018i Volcanoes National Park as this situation evolves. The eruption is currently taking place entirely within the closed\u202farea of Hawai\u2018i Volcanoes National Park.\u202f \u003Cbr \/\u003E\r\n\u202f \u003Cbr \/\u003E\r\nHVO is in constant communication with the County of Hawai\u2018i Civil Defense Agency.\u202f\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EHVO scientists will continue to monitor K\u012blauea volcano closely and will issue additional messages as warranted by changing activity. Stay informed about K\u012blauea by following volcano updates and tracking current monitoring data on the HVO web page (https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates) or by signing up to receive updates by email at this site: https:\/\/volcanoes.usgs.gov\/vns2\/. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cu\u003EMore Information:\u003C\/u\u003E\u003Cbr \/\u003E\r\nK\u012blauea activity summary also available by phone: (808) 967-8862\u003Cbr \/\u003E\r\nK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003Cbr \/\u003E\r\nK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u003C\/a\u003E\u003Cbr \/\u003E\r\nK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003Cbr \/\u003E\r\nK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cu\u003EHazard Analysis:\u202f\u003C\/u\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThis new eruption at\u202fK\u012blauea\u2019s\u202fsummit is occurring within a closed area of Hawai'i Volcanoes National Park. Therefore, high levels of volcanic gas are the primary hazard of concern, as this hazard can have far-reaching\u202feffects down-wind. Large amounts of volcanic gas\u2014primarily water vapor (H2O), carbon dioxide (CO2), and sulfur dioxide (SO2)\u2014are continuously released during eruptions of\u202fK\u012blauea\u202fVolcano. As SO2 is released from the summit, it will react in the atmosphere to create the visible haze known as\u202fvog\u202f(volcanic smog) that has been observed downwind of\u202fK\u012blauea.\u202fVog\u202fcreates the potential for airborne health hazards to residents and visitors, damages agricultural crops and other plants, and affects livestock.\u202fFor more information on gas hazards at the summit of\u202fK\u012blauea, please see:\u202fhttps:\/\/pubs.er.usgs.gov\/publication\/fs20173017. Vog\u202finformation can be found at\u202fhttps:\/\/vog.ivhhn.org\/.\u202f \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAdditional hazards include Pele's hair and other lightweight volcanic glass fragments from the lava fountains that will fall downwind of the fissure vents and dust the ground within a few hundred meters (yards) of the vent\u202f(s). Strong winds may waft lighter particles to greater distances. Residents should minimize exposure to these volcanic particles, which can cause skin and eye irritation.\u202f \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nOther significant hazards also remain around\u202fK\u012blauea caldera\u202ffrom Halema\u02bbuma\u02bbu\u202fcrater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. This underscores the extremely hazardous nature of\u202fK\u012blauea\u202fcaldera rim surrounding\u202fHalema\u02bbuma\u02bbu\u202fcrater, an area that has been closed to the public since late 2007.\u202f \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\nFor discussion of\u202fK\u012blauea\u202fhazards, please see:\u202fhttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u202f \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPlease see the\u202fHawai\u02bbi\u202fVolcanoes National Park website for visitor information:\u202fhttps:\/\/www.nps.gov\/havo\/index.htm.\u202fVisitors to Hawai'i Volcanoes National Park should note that under southerly (non-trade) wind conditions, there is potential for a dusting of powdery to gritty ash composed of volcanic glass and rock fragments. These ashfalls represent a minor hazard, but visitors should be aware that dustings of ash at areas around the\u202fK\u012blauea\u202fsummit are possible.\u202f \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EaskHVO@usgs.gov\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe Hawaiian Volcano Observatory (HVO) continues to closely monitor K\u012blauea's seismicity, deformation, and gas emissions for any changes in activity. HVO will now issue daily K\u012blauea updates until further notice. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSubscribe to these messages: \u003Cbr \/\u003E\r\n\u003Ca href=\u0022https:\/\/volcanoes.usgs.gov\/vns2\/\u0022\u003Ehttps:\/\/volcanoes.usgs.gov\/vns2\/\u003C\/a\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nRecent earthquakes in Hawai\u02bbi (map and list): \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/earthquakes\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/earthquakes\u003C\/a\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nExplanation of Volcano Alert Levels and Aviation Color Codes: \u003Ca href=\u0022https:\/\/www.usgs.gov\/natural-hazards\/volcano-hazards\/about-alert-levels\u0022\u003Ehttps:\/\/www.usgs.gov\/natural-hazards\/volcano-hazards\/about-alert-levels\u003C\/a\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"ORANGE\/WATCH status change to RED\/WARNING.  K\u012blauea is erupting. Eruption has commenced within Halema\u02bbuma\u02bbu crater in K\u012blauea\u2019s\u202fsummit caldera.","sentUtc":"2021-09-30","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2021-09-29T18:28:16-07:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2021-09-29T18:28:16-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2021-09-29T18:28:16-07:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003Etd { padding: .25em; }\u003C\/style\u003E\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210930\/0109Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EKilauea  (VNUM #332010)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tHawaiian Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/H261\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tHawaii\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E4091 ft (1247 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EK\u012blauea volcano is not erupting. Increased earthquake activity and changes in the patterns of ground deformation at K\u012blauea\u2019s\u202fsummit began occurring as of approximately noon on September 29, 2021, indicating movement of magma in the subsurface.  At this time, it is not possible to say with certainty if this activity will lead to an eruption -- the activity may remain below ground, as occurred in August 2021 and early December 2020 (two weeks prior to the December 2020 - May 2021 summit eruption), when magma intruded beneath the caldera but did not erupt. However, an eruption in Kilauea\u2019s summit region, within Hawai\u2018i Volcanoes National Park and away from infrastructure, is one potential outcome.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe US Geological Survey Hawaiian Volcano Observatory is raising the volcano alert level\/aviation color code for K\u012blauea from Advisory\/Yellow to Watch\/Orange due to this activity. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHVO will continue to monitor this activity closely and adjust the alert level accordingly. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHVO is in constant communication with Hawai\u2018i Volcanoes National Park as this situation evolves. The activity is confined entirely within the park. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nStay informed about K\u012blauea by following volcano updates and tracking current monitoring data on the HVO web page (https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates) or by signing up to receive updates by email at this site:\u202fhttps:\/\/volcanoes.usgs.gov\/vns2\/. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EHVO scientists will continue to monitor K\u012blauea volcano closely and will issue additional messages as warranted by changing activity. Stay informed about K\u012blauea by following volcano updates and tracking current monitoring data on the HVO web page (https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates) or by signing up to receive updates by email at this site: https:\/\/volcanoes.usgs.gov\/vns2\/. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cu\u003EMore Information:\u003C\/u\u003E\u003Cbr \/\u003E\r\nK\u012blauea activity summary also available by phone: (808) 967-8862\u003Cbr \/\u003E\r\nK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003Cbr \/\u003E\r\nK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u003C\/a\u003E\u003Cbr \/\u003E\r\nK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003Cbr \/\u003E\r\nK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EaskHVO@usgs.gov\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe Hawaiian Volcano Observatory (HVO) continues to closely monitor K\u012blauea's seismicity, deformation, and gas emissions for any changes in activity. HVO will now issue weekly K\u012blauea updates on Tuesdays until further notice. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSubscribe to these messages: \u003Cbr \/\u003E\r\n\u003Ca href=\u0022https:\/\/volcanoes.usgs.gov\/vns2\/\u0022\u003Ehttps:\/\/volcanoes.usgs.gov\/vns2\/\u003C\/a\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nRecent earthquakes in Hawai\u02bbi (map and list): \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/earthquakes\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/earthquakes\u003C\/a\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nExplanation of Volcano Alert Levels and Aviation Color Codes: \u003Ca href=\u0022https:\/\/www.usgs.gov\/natural-hazards\/volcano-hazards\/about-alert-levels\u0022\u003Ehttps:\/\/www.usgs.gov\/natural-hazards\/volcano-hazards\/about-alert-levels\u003C\/a\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"YELLOW\/ADVISORY status change to ORANGE\/WATCH.  K\u012blauea is not erupting.  Ground deformation and seismic activity indicate increased potential for eruption in K\u012blauea summit region. ","sentUtc":"2021-09-30","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2021-09-29T18:03:03-07:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2021-09-29T18:03:03-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2021-09-29T18:03:03-07:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003Etd { padding: .25em; }\u003C\/style\u003E\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210924\/2200Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPagan  (VNUM #284170)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tU.S. Geological Survey\n\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/N66\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 18 deg 7 min E 145 deg 48 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tNorthern Mariana Islands\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E1870 ft (570 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo unrest or activity as been observed at Mount Pagan in satellite data since September 6. Thus, the Aviation Color Code and Volcano Alert Level are changed from YELLOW\/ADVISORY to UNASSIGNED\/UNASSIGNED.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSatellite images showed emissions of volcanic ash and sulfur dioxide gas from September 1-6, 2021. Steaming continues to be observed occasionally in satellite data. Emissions of ash and gas could resume without warning. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nMount Pagan is not monitored with ground-based geophysical instrumentation. We will continue to evaluate satellite imagery, distal geophysical data, and mariner reports when available, but because the volcano is not monitored with ground-based instruments, we cannot provide advanced warning of activity.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nMount Pagan, one of two volcanoes that make up Pagan Island, is located on the northern end of the Island, and is one of the most historically active volcanoes in the Northern Mariana Islands.  The last large eruption (VEI 4) of the volcano was in 1981, followed by three and a half decades of intermittent activity.  Recent activity prior to 2016 was characterized by vigorous steam plumes and degassing from a shallow magma source.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone currently observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Eoccasional steaming\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECNMI Homeland Security and Emergency Management\u003Cbr \/\u003E\r\nhttp:\/\/www.cnmihsem.gov.mp\/\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nUSGS Northern Mariana Duty Scientist (808) 967-8815\u003Cbr \/\u003E\r\nhttp:\/\/volcano.wr.usgs.gov\/cnmistatus.php\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSatellite information, Washington VAAC\u003Cbr \/\u003E\r\nhttp:\/\/www.ssd.noaa.gov\/VAAC\/washington.html\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No evidence of eruptive activity since September 6. Aviation Color Code and Volcano Alert Level changed from YELLOW\/ADVISORY to UNASSIGNED\/UNASSIGNED.","sentUtc":"2021-09-24","obs":"nmi","vName":"Pagan","vnum":"284170","noticeId":"DOI-USGS-NMI-2021-09-24T14:27:39-07:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2021-09-24T14:27:39-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2021-09-24T14:27:39-07:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003Etd { padding: .25em; }\u003C\/style\u003E\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210921\/0412Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A817\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAsh emissions from the ongoing eruption at Semisopochnoi continue at a decreased rate. Over the last few hours, activity has consisted of discrete explosions that occur about once an hour and produce small ash clouds that rise to 10,000 to 15,000 feet above sea level and are currently drifting to the northwest. This represents less significant ash emissions and we are therefore lowering the Aviation Color Code and Volcano Alert Level to ORANGE\/WATCH. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nActivity at Semisopochnoi remains elevated and ash emissions could increase again at any time. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPlease visit the NWS Alaska Aviation Weather Unit for current information about the volcanic ash cloud forecast. https:\/\/www.weather.gov\/aawu\/sigmets \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10,000 to 15,000 ft. asl\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESmall ash clouds are drifting NW\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi is monitored by a local seismic and infrasound network, local web cameras, regional lightning and infrasound sensors, and satellite data.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS \u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF \u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Ash emissions continue at a decreased rate; Aviation Color Code and Alert Level lowered to ORANGE\/WATCH","sentUtc":"2021-09-21","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2021-09-20T19:42:03-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-09-20T19:42:03-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-09-20T19:42:03-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003Etd { padding: .25em; }\u003C\/style\u003E\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210920\/1947Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A812\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAsh emissions from the ongoing eruption at Semisopochnoi continue this morning. Satellite images show an ash cloud up to 10,000 to 15,000 feet above sea level and extending approximately 60 miles (100 km) to the northwest through 19:30 UTC. Explosions were detected throughout the night and into this morning. The Aviation Color Code and Volcano Alert level remain at RED\/WARNING.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe Alaska Volcano Observatory will continue to closely monitor all available data and provide updates as available.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPlease visit the NWS Alaska Aviation Weather Unit for current information about the volcanic ash cloud forecast. https:\/\/www.weather.gov\/aawu\/sigmets \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10,000 to 15,000 ft. asl\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAsh observed in satellite extending 60 miles to the NW\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi is monitored by a local seismic and infrasound network, local web cameras, regional lightning and infrasound sensors, and satellite data.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS \u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF \u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Ash emissions continue; Aviation color code and alert level remain at RED\/WARNING","sentUtc":"2021-09-20","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2021-09-20T10:52:22-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-09-20T10:52:22-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-09-20T10:52:22-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003Etd { padding: .25em; }\u003C\/style\u003E\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210920\/0558Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A811\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAsh emissions from the ongoing eruption at Semisopochnoi have increased in frequency and intensity. Satellite images show an ash cloud at an estimated altitude of 15,000 ft. above sea level extending approximately 60 miles (100 km) to the southeast through 05:00 UTC. Explosions have been observed throughout the day and increased sulfur dioxide gas emissions have been observed in satellite data this afternoon. These observations represent an increase in eruptive activity and Aviation Color Code and Volcano Alert level are being increased to RED\/WARNING.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nIncreasing high clouds over Semisopochnoi will likely obscure satellite views of ash emissions within the hour. Seismic and infrasound monitoring will continue to provide notice of ongoing explosive activity, however it cannot determine the height or extent of ash emissions. The Alaska Volcano Observatory will continue to closely monitor all available data. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPlease visit the NWS Alaska Aviation Weather Unit for current information about the volcanic ash cloud forecast. https:\/\/www.weather.gov\/aawu\/sigmets \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E15,000 ft. asl\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAsh and sulfur dioxide observed in satellite extending 60 miles to the SE\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi is monitored by a local seismic and infrasound network, local web cameras, regional lightning and infrasound sensors, and satellite data.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS \u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF \u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Aviation color code and alert level raised to RED\/WARNING due to increased ash emissions","sentUtc":"2021-09-20","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2021-09-19T20:52:01-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-09-19T20:52:01-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-09-19T20:52:01-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003Etd { padding: .25em; }\u003C\/style\u003E\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210910\/1815Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPagan  (VNUM #284170)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tU.S. Geological Survey\n\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/N49\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 18 deg 7 min E 145 deg 48 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tNorthern Mariana Islands\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E1870 ft (570 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe eruption of Pagan that began on September 1, 2021, consisting of low-level emissions of volcanic ash and sulfur dioxide gas, has paused or ended. The last observations of ash and sulfur dioxide gas emissions in satellite data was on September 6. Thus, the Aviation Color Code and Volcano Alert Level changed from ORANGE\/WATCH to YELLOW\/ADVISORY.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteaming continues to be observed intermittently in satellite data. It is unclear whether the eruption has paused or ended. Emissions of ash and gas could resume without warning. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nMount Pagan is not monitored with ground-based geophysical instrumentation. We will continue to evaluate satellite imagery, distal geophysical data, and mariner reports when available, but because the volcano is not monitored with ground-based instruments, we cannot provide advanced warning of activity.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nMount Pagan, one of two volcanoes that make up Pagan Island, is located on the northern end of the Island, and is one of the most historically active volcanoes in the Northern Mariana Islands.  The last large eruption (VEI 4) of the volcano was in 1981, followed by three and a half decades of intermittent activity.  Recent activity prior to 2016 was characterized by vigorous steam plumes and degassing from a shallow magma source.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone currently observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EIntermittent steaming\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECNMI Homeland Security and Emergency Management\u003Cbr \/\u003E\r\nhttp:\/\/www.cnmihsem.gov.mp\/\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nUSGS Northern Mariana Duty Scientist (808) 967-8815\u003Cbr \/\u003E\r\nhttp:\/\/volcano.wr.usgs.gov\/cnmistatus.php\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSatellite information, Washington VAAC\u003Cbr \/\u003E\r\nhttp:\/\/www.ssd.noaa.gov\/VAAC\/washington.html\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No evidence of eruptive activity since September 6.  Aviation Color Code and Volcano Alert Level changed from ORANGE\/WATCH to YELLOW\/ADVISORY.","sentUtc":"2021-09-10","obs":"nmi","vName":"Pagan","vnum":"284170","noticeId":"DOI-USGS-NMI-2021-09-10T09:19:13-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2021-09-10T09:19:13-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2021-09-10T09:19:13-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003Etd { padding: .25em; }\u003C\/style\u003E\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210901\/1844Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPagan  (VNUM #284170)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tU.S. Geological Survey\n\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/N40\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 18 deg 7 min E 145 deg 48 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tNorthern Mariana Islands\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E1870 ft (570 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ELow-level volcanic gas and ash emissions from Pagan Volcano have been observed in satellite data from September 1.  A continuous plume from the summit extended up to 150 km (93 miles) to the northwest and southwest of the volcano at an altitude of 10,000 ft above sea level for most of the day.  Emissions ceased at 13:00 UTC September 1 (11:00 PM local time) but may resume with little warning.   The Aviation Color Code\/Volcano Alert Level for Mount Pagan is being changed to ORANGE\/WATCH. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nMount Pagan is not monitored with ground-based geophysical instrumentation. We will continue to evaluate satellite imagery, distal geophysical data, and mariner reports when available, but because the volcano is not monitored with ground-based instruments, we cannot provide advanced warning of activity.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nMount Pagan, one of two volcanoes that make up Pagan Island, is located on the northern end of the Island, and is one of the most historically active volcanoes in the Northern Mariana Islands.  The last large eruption (VEI 4) of the volcano was in 1981, followed by three and a half decades of intermittent activity.  Recent activity prior to 2016 was characterized by vigorous steam plumes and degassing from a shallow magma source.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10,000 ft\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECNMI Homeland Security and Emergency Management\u003Cbr \/\u003E\r\nhttp:\/\/www.cnmihsem.gov.mp\/\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nUSGS Northern Mariana Duty Scientist (808) 967-8815\u003Cbr \/\u003E\r\nhttp:\/\/volcano.wr.usgs.gov\/cnmistatus.php\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSatellite information, Washington VAAC\u003Cbr \/\u003E\r\nhttp:\/\/www.ssd.noaa.gov\/VAAC\/washington.html\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Ash emissions observed in satellite data on October 1. Aviation Color Code and Volcano Alert Level changed from YELLOW\/ADVISORY to ORANGE\/WATCH.","sentUtc":"2021-09-01","obs":"nmi","vName":"Pagan","vnum":"284170","noticeId":"DOI-USGS-NMI-2021-09-01T09:55:49-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2021-09-01T09:55:49-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2021-09-01T09:55:49-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210827\/1724Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAtka volcanic complex  (VNUM #311160)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A710\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 19 min W 174 deg 8 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5030 ft (1533 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe Alaska Volcano Observatory is lowering the Aviation Color Code and Alert Level at the Atka volcanic complex to GREEN\/NORMAL. On August 10, AVO detected an increase in small earthquakes, located between 6 and 2 km (4 and 1 miles) below sea level, about 5 km (3 miles) west of Kliuchef volcano within the Atka volcanic complex.. After several days of increased seismicity, the earthquake rate began to drop, and has subsequently returned to background levels.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPrevious alerts by the Alaska Volcano Observatory for unrest at the Atka volcanic complex have been for Korovin Volcano, the site of the most recent historical eruptions. The location of earthquakes, however, is not specific to Korovin and could be related to several other volcanic vents that are part of the Atka volcanic complex, including Mount Kliuchef.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe Alaska Volcano Observatory will continue to monitor the Atka volcanic complex for signs of volcanic activity. The area is monitored by local seismic and infrasound sensors, satellite data, and regional lightning detection instruments. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS mcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF dfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Lowered Aviation Color Code and Alert Level to GREEN\/NORMAL following return to background seismic level","sentUtc":"2021-08-27","obs":"avo","vName":"Atka volcanic complex","vnum":"311160","noticeId":"DOI-USGS-AVO-2021-08-27T08:21:29-08:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-08-27T08:21:29-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-08-27T08:21:29-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210826\/1944Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EKilauea  (VNUM #332010)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tHawaiian Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/H241\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tHawaii\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E4091 ft (1247 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EK\u012blauea volcano is not erupting. Over the past 24 hours, earthquake activity and ground deformation levels have decreased in the area beneath the southern part of K\u012blauea\u2019s summit caldera within the closed area of Hawai\u02bbi Volcanoes National Park. These observations indicate that the immediate potential for an eruption is diminished at this time.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe U.S. Geological Survey\u2019s Hawaiian Volcano Observatory is lowering the Volcano Alert Level\/Aviation Color Code for K\u012blauea from WATCH\/ORANGE to ADVISORY\/YELLOW reflecting this decrease in activity levels. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe earthquake swarm that began beneath the south part of K\u012blauea caldera, within Hawai\u02bbi Volcanoes National Park, on August 23, 2021, has waned. Within the past 24 hours, only 10 earthquakes have been detected in this area. The earthquake swarm began in that region at around 4:30 p.m. HST on August 23 and continued until the morning of August 25, 2021. 478 earthquakes were detected during this swarm; the rate of earthquakes detected per hour peaked at 28 events between 7 and 8 p.m. HST on August 24. Most of the earthquakes were between magnitude 1 and 2 and occurred approximately 1-2 km (0.6-1.2 mi) below the Earth\u2019s surface. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe earthquake swarm was accompanied by change in the rate and style of ground deformation. Ground deformation in the K\u012blauea summit region has leveled off within the past 24 hours and rapid inflation near the region of K\u012blauea\u2019s south caldera is no longer being observed.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nEarthquake activity and ground deformation have decreased together to levels that indicate magma is no longer moving into the region of K\u012blauea\u2019s south caldera. These changes indicate reduced potential for an eruption at this time. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nK\u012blauea summit sulfur dioxide (SO2) emission rates remain at very low levels that have persisted since May 2021, when the most recent summit eruption ended. Concentrations of SO2 in ambient air, measured at stations in the K\u012blauea summit region, show no changes. The most recent SO2 emission rates, measured on August 12, were 50 tonnes per day, close to levels associated with the non-eruptive period from late 2018 to late 2020 (less than 50 tonnes per day). This is significantly lower than emission rates that averaged over 800 tonnes per day from mid-February to mid-April when the summit eruption of K\u012blauea was ongoing. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHVO scientists will continue to monitor K\u012blauea volcano closely and will issue additional messages as warranted by changing activity. Stay informed about K\u012blauea by following volcano updates and tracking current monitoring data on the HVO web page (https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates) or by signing up to receive updates by email at this site: https:\/\/volcanoes.usgs.gov\/vns2\/. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cu\u003EMore Information:\u003C\/u\u003E\u003Cbr \/\u003E\r\nK\u012blauea activity summary also available by phone: (808) 967-8862\u003Cbr \/\u003E\r\nK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003Cbr \/\u003E\r\nK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u003C\/a\u003E\u003Cbr \/\u003E\r\nK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003Cbr \/\u003E\r\nK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EaskHVO@usgs.gov\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe Hawaiian Volcano Observatory (HVO) continues to closely monitor K\u012blauea's seismicity, deformation, and gas emissions for any changes in activity. HVO will now issue weekly K\u012blauea updates on Tuesdays until further notice. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSubscribe to these messages: \u003Cbr \/\u003E\r\n\u003Ca href=\u0022https:\/\/volcanoes.usgs.gov\/vns2\/\u0022\u003Ehttps:\/\/volcanoes.usgs.gov\/vns2\/\u003C\/a\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nRecent earthquakes in Hawai\u02bbi (map and list): \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/earthquakes\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/earthquakes\u003C\/a\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nExplanation of Volcano Alert Levels and Aviation Color Codes: \u003Ca href=\u0022https:\/\/www.usgs.gov\/natural-hazards\/volcano-hazards\/about-alert-levels\u0022\u003Ehttps:\/\/www.usgs.gov\/natural-hazards\/volcano-hazards\/about-alert-levels\u003C\/a\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"ORANGE\/WATCH status change to YELLOW\/ADVISORY","sentUtc":"2021-08-26","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2021-08-26T11:56:17-07:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2021-08-26T11:56:17-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2021-08-26T11:56:17-07:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210824\/1534Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EKilauea  (VNUM #332010)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tHawaiian Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/H238\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tHawaii\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E4091 ft (1247 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EK\u012blauea volcano is not erupting. A swarm of earthquakes beneath the south part of K\u012blauea caldera, within Hawai\u02bbi Volcanoes National Park, began on the evening of August 23, 2021. The swarm continues into the early morning hours of August 24 with a particularly strong sequence of earthquakes that occurred at about 1:30 a.m., HST. The onset of the earthquake swarm was coincident with a change in the style of ground deformation at tiltmeters in the K\u012blauea summit region, potentially indicating the shallow movement of magma beneath the south part of K\u012blauea caldera.   \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe US Geological Survey Hawaiian Volcano Observatory is raising the volcano alert level\/aviation color code for K\u012blauea from Advisory\/Yellow to Watch\/Orange due to this activity. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHVO will continue to monitor this activity closely and adjust the alert level accordingly. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHVO is in constant communication with Hawai\u2018i Volcanoes National Park as this situation evolves. The activity is confined entirely within the park. \u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\nStay informed about K\u012blauea by following volcano updates and tracking current monitoring data on the HVO web page (https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates) or by signing up to receive updates by email at this site: https:\/\/volcanoes.usgs.gov\/vns2\/.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe US Geological Survey Hawaiian Volcano Observatory has detected an increase in earthquake activity beneath the south part of K\u012blauea summit caldera, within Hawai\u02bbi Volcanoes National Park. The activity began around 4:30 p.m., HST, on August 23 and continued through the night and into the early morning of August 24, 2021.   The swarm was accompanied by an increase in the style of ground deformation recorded by the Sandhill tiltmeter, just to the west of the earthquake swarm location.  The same tilt increase was also recorded by the tiltmeter near U\u0113kahuna Bluff and the site of the old HVO building. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAt about 1:30 a.m. this morning, the swarm of earthquakes intensified in this region; this activity may indicate an intrusion of magma occurring 1\u20132 km (0.6\u20131.2 miles) beneath the south caldera. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nOver 140 earthquakes have been recorded as of 4:30 a.m. on August 24; the largest recorded earthquake was magnitude 3.3 with the majority of earthquakes less than magnitude 1. Small earthquakes are continuing at a rate of at least 10 detected earthquakes per hour.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCurrently, webcams and satellite imagery show no evidence of lava at the surface. HVO scientists will continue the monitor the situation and will issue additional messages and alert level changes as warranted by changing activity.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFor discussion of K\u012blauea hazards, please see: \u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\n\u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards\u003C\/a\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cu\u003EMore Information:\u003C\/u\u003E\u003Cbr \/\u003E\r\nK\u012blauea activity summary also available by phone: (808) 967-8862\u003Cbr \/\u003E\r\nK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003Cbr \/\u003E\r\nK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u003C\/a\u003E\u003Cbr \/\u003E\r\nK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003Cbr \/\u003E\r\nK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EaskHVO@usgs.gov\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe Hawaiian Volcano Observatory (HVO) continues to closely monitor K\u012blauea's seismicity, deformation, and gas emissions for any changes in activity. HVO will now issue daily K\u012blauea updates until further notice. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSubscribe to these messages: \u003Cbr \/\u003E\r\n\u003Ca href=\u0022https:\/\/volcanoes.usgs.gov\/vns2\/\u0022\u003Ehttps:\/\/volcanoes.usgs.gov\/vns2\/\u003C\/a\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nRecent earthquakes in Hawai\u02bbi (map and list): \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/earthquakes\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/earthquakes\u003C\/a\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nExplanation of Volcano Alert Levels and Aviation Color Codes: \u003Ca href=\u0022https:\/\/www.usgs.gov\/natural-hazards\/volcano-hazards\/about-alert-levels\u0022\u003Ehttps:\/\/www.usgs.gov\/natural-hazards\/volcano-hazards\/about-alert-levels\u003C\/a\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"YELLOW\/ADVISORY status change to ORANGE\/WATCH","sentUtc":"2021-08-24","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2021-08-24T07:43:18-07:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2021-08-24T07:43:18-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2021-08-24T07:43:18-07:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210811\/2222Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAtka Volcanic Complex  (VNUM #311160)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A629\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 19 min W 174 deg 8 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5030 ft (1533 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe Alaska Volcano Observatory is raising the Aviation Color Code and Alert Level at the Atka volcanic complex to YELLOW\/ADVISORY after detecting an increased number of small, shallow earthquakes over the past day. These earthquakes have been located 3 to 6 km (1.9 to 3.7 miles) deep and around 7 km (4.3 miles) southwest of Korovin Volcano. The earthquakes represent an increase from background seismic activity, but may not necessarily lead to an eruption. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPrevious alerts by the Alaska Volcano Observatory for unrest for the Atka volcanic complex have been for Korovin Volcano, the site of the most recent historical eruptions. The location of earthquakes, however, is not specific to Korovin and could be related to several other volcanic vents that are part of the Atka volcanic complex, including Mount Kliuchef.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe Alaska Volcano Observatory will continue to monitor the Atka volcanic complex for signs of volcanic activity. The area is monitored by local seismic and infrasound sensors, satellite data, and regional lightning detection instruments. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS mcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF dfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Raised Aviation Color Code and Alert Level to YELLOW\/WATCH following increased earthquake activity ","sentUtc":"2021-08-11","obs":"avo","vName":"Atka volcanic complex","vnum":"311160","noticeId":"DOI-USGS-AVO-2021-08-11T13:54:55-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-08-11T13:54:55-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-08-11T13:54:55-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210805\/1755Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A604\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EClear web camera views of Pavlof Volcano this morning indicate episodic low-level ash emissions are occurring. Intermittent bursts of ash from the summit are producing diffuse ash clouds that are rising just above the summit (summit elevation 8261 ft above sea level) and drifting southeast roughly 6 mi before dissipating. Seismic and infrasound data indicate that activity consists of occasional small explosions and tremor. The ash emissions indicate an active eruption in progress thus the Alaska Volcano Observatory is raising the Aviation Color Code and Alert Level to ORANGE\/WATCH.   \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof Volcano is a snow- and ice-covered stratovolcano located on the southwestern end of the Alaska Peninsula about 953 km (592 mi) southwest of Anchorage. The volcano is about 7 km (4.4 mi) in diameter and has active vents on the north and east sides close to the summit. With over 40 historic eruptions, it is one of the most consistently active volcanoes in the Aleutian arc. Eruptive activity is generally characterized by sporadic Strombolian lava fountaining continuing for a several-month period. Ash plumes as high as 49,000 ft ASL have been generated by past eruptions of Pavlof, and during the March 2016 eruption, ash plumes as high as 40,000 feet above sea level were generated and the ash was tracked in satellite data as distant as eastern Canada. The nearest community, Cold Bay, is located 60 km (37 miles) to the southwest of Pavlof. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMatt Haney, Acting Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF dfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Ash emissions occurring; minor explosions detected.","sentUtc":"2021-08-05","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2021-08-05T09:00:57-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-08-05T09:00:57-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-08-05T09:00:57-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210731\/1819Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A592\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismic activity at Semisopochnoi has increased in recent days with a marked increase in the past 8 hours.  Increased activity has also been detected on local infrasound stations, suggesting possible low-level (below 10,000 ft above sea level) emissions.  Due to this increase in activity, AVO is raising the Aviation Color Code to ORANGE and the Alert Level to WATCH.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWhen occurring, small eruptions producing minor ash deposits within the vicinity of the active north crater of Mount Cerberus and ash clouds under 10,000 ft above sea level are typical of activity at Semisopochnoi.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi is monitored by a local seismic and infrasound network, local web cameras, regional lightning and infrasound sensors, and satellite data.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMatt Haney, Acting Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF dfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Aviation color code and alert level raised to ORANGE\/WATCH due to increase in seismicity.","sentUtc":"2021-07-31","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2021-07-31T09:38:40-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-07-31T09:38:40-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-07-31T09:38:40-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210729\/0912Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPagan  (VNUM #284170)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            UNASSIGNED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tU.S. Geological Survey\n\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/N31\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 18 deg 7 min E 145 deg 48 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tNorthern Mariana Islands\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E1870 ft (570 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EGround-based observations from local residents indicate that there were felt earthquakes and a light emission from Mount Pagan at approximately 4:30 UTC July 29 (2:30pm local time July 28). This represents a departure from background activity and therefore the Aviation Color Code\/Volcano Alert Status for Mount Pagan is being changed to YELLOW\/ADVISORY. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nMount Pagan is not monitored with ground-based geophysical instrumentation. Furthermore, no indications of the current unrest have been detected in satellite or distal seismic data. We will continue to evaluate satellite imagery, distal geophysical data, on-island, and mariner reports when available, but because the volcano is not monitored with ground-based instruments, we cannot provide advanced warning of activity.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nMount Pagan, one of two volcanoes that make up Pagan Island, is located on the northern end of the Island, and is one of the most historically active volcanoes in the Northern Mariana Islands.  The last large eruption (VEI 4) of the volcano was in 1981, followed by three and a half decades of intermittent activity.  Recent activity prior to 2016 was characterized by vigorous steam plumes and degassing from a shallow magma source.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECNMI Homeland Security and Emergency Management\u003Cbr \/\u003E\r\nhttp:\/\/www.cnmihsem.gov.mp\/\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nUSGS Northern Mariana Duty Scientist (808) 967-8815\u003Cbr \/\u003E\r\nhttp:\/\/volcano.wr.usgs.gov\/cnmistatus.php\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSatellite information, Washington VAAC\u003Cbr \/\u003E\r\nhttp:\/\/www.ssd.noaa.gov\/VAAC\/washington.html\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Alert status changed from UNASSIGNED to YELLOW based on reports of volcanic unrest from local residents.","sentUtc":"2021-07-29","obs":"nmi","vName":"Pagan","vnum":"284170","noticeId":"DOI-USGS-NMI-2021-07-29T00:36:38-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2021-07-29T00:36:38-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2021-07-29T00:36:38-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210728\/1933Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGareloi  (VNUM #311070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A569\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 47 min W 178 deg 47 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5161 ft (1573 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe increase in seismic activity observed in May and June, 2021 at Mount Gareloi (Gareloi volcano) has diminished. Because the level of seismic activity is now at background, AVO is returning the aviation color code to GREEN and the Volcano Alert Level to NORMAL.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nGareloi is monitored by a local seismic and infrasound network, satellite data, and regional infrasound and lightning-detection networks.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMount Gareloi, which makes up all of Gareloi Island, is a stratovolcano located in the Delarof Islands group of the Aleutian Islands, about 2,000 km (1,242 mi) west-southwest of Anchorage and about 150 km (93 mi) west of Adak, the westernmost community in Alaska. This small volcano is 10 \u00d7 8 km (6.2 \u00d7 5.0 mi) in diameter at its base with two summits, separated by a narrow saddle. The northern, slightly higher peak contains crater about 300 m (1,000 ft) across. The southern summit has a crater open to the south and a persistent degassing vent (fumarole) on its western rim. Gareloi has been one of the most active in the Aleutians since the 1740s, with 16 reports of eruptive activity at Gareloi since 1760. In 1929, its largest historical eruption produced sixteen small south- to southeast-trending craters that extend from the southern summit to the coast, as well as lava flows and pyroclastic deposits on the southeastern flank of the volcano. Eruptions of Gareloi commonly produce ash clouds and lava flows, and the primary hazard is airborne clouds of ash that could affect aircraft. Since seismic instruments were installed in 2003, they have detected small but consistent seismic signals from beneath Mount Gareloi\u2019s edifice.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMatt Haney, Acting Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF dfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Change in Alert Level to GREEN due to decrease in seismic activity.","sentUtc":"2021-07-28","obs":"avo","vName":"Gareloi","vnum":"311070","noticeId":"DOI-USGS-AVO-2021-07-27T09:37:17-08:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-07-27T09:37:17-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-07-27T09:37:17-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210723\/2225Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin  (VNUM #311120)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A553\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 4 min W 176 deg 6 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5709 ft (1740 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA satellite radar image from last night July 22, 9:32 PM local (July 23 05:32 UTC) shows a small ~50 m (~150 ft) diameter area of uplift in the center of the crater at Great Sitkin suggestive of rising magma near the surface. This lava dome-like feature appears to have been emplaced sometime between July 14 and 22.  As a result AVO is raising the the Aviation Color Code to ORANGE and the Volcano Alert Level to WATCH. Seismicity has been at relatively low levels this week compared to last week and we suspect that the lava dome-like feature was emplaced last week. Moderately elevated surface temperatures consistent with this feature were observed in satellite data on July 22. Cloudy conditions have obscured views of the volcano by satellite most of the past week.  AVO will continue to closely monitor this new uplift feature.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe prognosis for eruptive activity is uncertain. Continued growth of the lava dome feature, additional explosive events, or a return to non-eruptive behaviors are all possible. AVO will report on significant changes and observations in monitoring data should they occur.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nGreat Sitkin is monitored with a local real-time seismic network, which will typically allow AVO to detect changes in unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption would be accomplished using a combination of seismic, infrasound, lightning, and satellite data. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin Volcano is a basaltic andesite volcano that occupies most of the northern half of Great Sitkin Island, a member of the Andreanof Islands group in the central Aleutian Islands. It is located 43 km (26 miles) east of the community of Adak. The volcano is a composite structure consisting of an older dissected volcano and a younger parasitic cone with a 3-km-diameter summit crater. A steep-sided lava dome, emplaced during an eruption in 1974, occupies the center of the crater. Great Sitkin erupted at least three times in the 20th century, most recently in 1974. That eruption produced at least one ash cloud that likely exceeded an altitude of 25,000 ft above sea level. A poorly documented eruption occurred in 1945, also producing a lava dome that was partially destroyed in the 1974 eruption. Within the past 280 years a large explosive eruption produced pyroclastic flows that partially filled the Glacier Creek valley on the southwest flank. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMatt Haney, Acting Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF dfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Increase in Aviation Color Code and Alert Level to ORANGE\/WATCH based on evidence of new lava dome at the summit.","sentUtc":"2021-07-23","obs":"avo","vName":"Great Sitkin","vnum":"311120","noticeId":"DOI-USGS-AVO-2021-07-23T13:38:03-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-07-23T13:38:03-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-07-23T13:38:03-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210722\/0028Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A542\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EDue to a marked decline is seismicity and no evidence of explosive activity detected in satellite, seismic or infrasound data since July 12, AVO is decreasing the Aviation Color Code to YELLOW and the Alert Level to ADVISORY.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWhen occurring, small eruptions producing minor ash deposits within the vicinity of the active north crater of Mount Cerberus and ash clouds under 10,000 ft above sea level are typical of activity at Semisopochnoi.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi is monitored by a local seismic and infrasound network, local web cameras, regional lightning and infrasound sensors, and satellite data.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS mcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF dfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Aviation color code and alert level decreaed to YELLOW\/ADVISORY due to decline in seismicity and no evidence of explosive activity.","sentUtc":"2021-07-22","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2021-07-21T11:07:40-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-07-21T11:07:40-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-07-21T11:07:40-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210713\/0014Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A490\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EContinuous volcanic tremor (constant shaking) began to be observed at ~2000 UTC (12 pm AKDT) and continues through the present time. Ash emissions were visible in satellite data beginning around 2100 UTC (1 pm AKDT) to an altitude of less than 5,000 feet asl (based on wind direction). Satellite observations from yesterday afternoon showed a robust steam plume and sulfur dioxide gas emissions. These observations indicate an increase in unrest and the Aviation Color Code is being increased to ORANGE, and the Volcano Alert Level is being increased to WATCH. Additional ash emissions are probable, but not certain.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWhen occurring, small eruptions producing minor ash deposits within the vicinity of the active north crater of Mount Cerberus and ash clouds under 10,000 ft above sea level are typical of activity at Semisopochnoi.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ELess than 5,000 ft asl.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EObserved in GOES-17 satellite\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi is monitored by a local seismic and infrasound network, regional lightning and infrasound sensors, and satellite data.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS mcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF dfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Aviation color code and alert level increased to Orange\/Watch due to seismic tremor and low-level ash emssions.","sentUtc":"2021-07-13","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2021-07-12T16:04:29-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-07-12T16:04:29-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-07-12T16:04:29-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210709\/1940Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A468\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismic activity has increased at Pavlof Volcano over the past 16 hours and is characterized by tremor.  No eruptive activity or emissions from the summit have been observed.  The seismic activity represents an increase from background levels therefore the Alaska Volcano Observatory is raising the Aviation Color Code and Alert Level to YELLOW\/ADVISORY.  This does not mean that an eruption is likely or imminent. However, past eruptions of Pavlof occurred with little or no warning.     \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof Volcano is a snow- and ice-covered stratovolcano located on the southwestern end of the Alaska Peninsula about 953 km (592 mi) southwest of Anchorage. The volcano is about 7 km (4.4 mi) in diameter and has active vents on the north and east sides close to the summit. With over 40 historic eruptions, it is one of the most consistently active volcanoes in the Aleutian arc. Eruptive activity is generally characterized by sporadic Strombolian lava fountaining continuing for a several-month period. Ash plumes as high as 49,000 ft ASL have been generated by past eruptions of Pavlof, and during the March 2016 eruption, ash plumes as high as 40,000 feet above sea level were generated and the ash was tracked in satellite data as distant as eastern Canada. The nearest community, Cold Bay, is located 60 km (37 miles) to the southwest of Pavlof. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS mcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF dfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Seismicity has increased. No eruptive actvity observed.  ","sentUtc":"2021-07-09","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2021-07-09T10:51:31-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-07-09T10:51:31-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-07-09T10:51:31-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210708\/1838Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVeniaminof  (VNUM #312070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            UNASSIGNED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A463\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 56 deg 11 min W 159 deg 23 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8225 ft (2507 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe Alaska Volcano Observatory is moving the status of Veniaminof Volcano from UNASSIGNED\/UNASSIGNED to GREEN\/NORMAL.  Recent field operations were successful in restoring seismic stations on Veniaminof allowing AVO to resume monitoring potential activity at the volcano.  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMount Veniaminof volcano is an andesitic stratovolcano with an ice-filled 10-km diameter summit caldera located on the Alaska Peninsula, 775 km (480 mi) southwest of Anchorage and 35 km (22 mi) north of Perryville. Veniaminof is one of the largest (~300 cubic km; 77 cubic mi) and most active volcanic centers in the Aleutian Arc and has erupted at least 14 times in the past 200 years. Recent eruptions in 1993-95, 2005, 2013, and 2018 all occurred at the intracaldera cone and lasted for several months. These eruptions produced lava spattering and fountaining, minor emissions of ash and gas, and small lava flows into intracaldera icefield. Minor ash-producing explosions occurred nearly annually between 2002 and 2010. Previous historical eruptions have produced ash plumes that reached 15,000 to 20,000 ft above sea level (1939, 1956, and 2018) and ash fallout that blanketed areas within about 40 km (25 mi) of the volcano (1939, 2018).\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS mcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF dfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Geophysical stations restored.  Veniaminof returned to mionitored status.  ","sentUtc":"2021-07-08","obs":"avo","vName":"Veniaminof","vnum":"312070","noticeId":"DOI-USGS-AVO-2021-07-07T15:04:51-08:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-07-07T15:04:51-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-07-07T15:04:51-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210616\/2159Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A374\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo ash emissions or explosions from Semisopochnoi have been detected in satellite or infrasound data since May 30, and the level of seismic activity has been relatively low. Satellite views over the past few weeks have detected elevated surface temperatures, and sulfur dioxide emissions were observed on several occasions, indicating continued volcanic unrest, but no recent ash deposits have been observed.  Because of the low level of seismicity and lack of significant explosive activity, AVO is lowering the Aviation Color Code and Volcano Alert Level to YELLOW\/ADVISORY.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWhen occurring, small eruptions producing minor ash deposits within the vicinity of the active north crater of Mount Cerberus and ash clouds under 10,000 ft above sea level are typical of activity at Semisopochnoi.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi is monitored by a local seismic and infrasound network, regional lightning and infrasound sensors, and satellite data.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS mcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF dfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No explosive activity has been observed since May 30, though sulfur dioxide emissions have been observed several times. Seismicity is at low levels.","sentUtc":"2021-06-16","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2021-06-16T09:52:40-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-06-16T09:52:40-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-06-16T09:52:40-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210608\/1743Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGareloi  (VNUM #311070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A338\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 47 min W 178 deg 47 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5161 ft (1573 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA slight increase in seismic activity was observed at Mount Gareloi (Gareloi volcano) on May 18, and beginning May 27 there has been a sustained increase in the rate and size of small volcanic earthquakes. Because the level of seismic activity is now above background, AVO is raising the aviation color code to YELLOW and the Volcano Alert Level to ADVISORY. There have been no other notable changes at the volcano in satellite data or web camera views. Sulfur dioxide gas was detected in satellite imagery from Gareloi over the past week and is consistent with measurements from the last several years. No activity was observed by an AVO field crew flying over the summit on May 23.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nGareloi volcano persistently emits magmatic gases from a fumarole field on the south crater and commonly exhibits low-level seismic activity. These observations suggest the presence of shallow magma and potential interaction with a hydrothermal system. The current increase in seismicity likely reflects a change to the magmatic-hydrothermal system, but it is not clear that the likelihood of a volcanic eruption has increased. AVO will continue to monitor activity to determine if the recent changes are related to influx of new magma or other changes to the magma system.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nGareloi is monitored by a local seismic and infrasound network, satellite data, and regional infrasound and lightning-detection networks.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMount Gareloi, which makes up all of Gareloi Island, is a stratovolcano located in the Delarof Islands group of the Aleutian Islands, about 2,000 km (1,242 mi) west-southwest of Anchorage and about 150 km (93 mi) west of Adak, the westernmost community in Alaska. This small volcano is 10 \u00d7 8 km (6.2 \u00d7 5.0 mi) in diameter at its base with two summits, separated by a narrow saddle. The northern, slightly higher peak contains crater about 300 m (1,000 ft) across. The southern summit has a crater open to the south and a persistent degassing vent (fumarole) on its western rim. Gareloi has been one of the most active in the Aleutians since the 1740s, with 16 reports of eruptive activity at Gareloi since 1760. In 1929, its largest historical eruption produced sixteen small south- to southeast-trending craters that extend from the southern summit to the coast, as well as lava flows and pyroclastic deposits on the southeastern flank of the volcano. Eruptions of Gareloi commonly produce ash clouds and lava flows, and the primary hazard is airborne clouds of ash that could affect aircraft. Since seismic instruments were installed in 2003, they have detected small but consistent seismic signals from beneath Mount Gareloi\u2019s edifice.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS mcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF dfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Change in Alert Level to YELLOW\/ADVISORY due to increase in earthquake activity.","sentUtc":"2021-06-08","obs":"avo","vName":"Gareloi","vnum":"311070","noticeId":"DOI-USGS-AVO-2021-06-07T11:37:57-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-06-07T11:37:57-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-06-07T11:37:57-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210527\/2058Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin  (VNUM #311120)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A307\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 4 min W 176 deg 6 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5709 ft (1740 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismicity has remained at low levels following the explosive event on May 25 (local time). Satellite observations showed very minor steaming and slightly elevated surface temperatures during breaks in the cloud cover yesterday afternoon.  Thus, the Aviation Color Code is being decreased to YELLOW and the Volcano Alert Level to ADVISORY. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe prognosis for renewed eruptive activity is uncertain. Additional explosive events, the eruption of lava, or a return to non-eruptive behaviors are all possible. AVO will report on significant changes and observations in monitoring data should they occur.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nGreat Sitkin is monitored with a local real-time seismic network, which will typically allow AVO to detect changes in unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption would be accomplished using a combination of seismic, infrasound, lightning, and satellite data. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin Volcano is a basaltic andesite volcano that occupies most of the northern half of Great Sitkin Island, a member of the Andreanof Islands group in the central Aleutian Islands. It is located 43 km (26 miles) east of the community of Adak. The volcano is a composite structure consisting of an older dissected volcano and a younger parasitic cone with a 3-km-diameter summit crater. A steep-sided lava dome, emplaced during an eruption in 1974, occupies the center of the crater. Great Sitkin erupted at least three times in the 20th century, most recently in 1974. That eruption produced at least one ash cloud that likely exceeded an altitude of 25,000 ft above sea level. A poorly documented eruption occurred in 1945, also producing a lava dome that was partially destroyed in the 1974 eruption. Within the past 280 years a large explosive eruption produced pyroclastic flows that partially filled the Glacier Creek valley on the southwest flank. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Decrease in Aviation Color Code and Alert level to YELLOW\/ADVISORY due to decreased activity.","sentUtc":"2021-05-27","obs":"avo","vName":"Great Sitkin","vnum":"311120","noticeId":"DOI-USGS-AVO-2021-05-27T12:44:01-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-05-27T12:44:01-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-05-27T12:44:01-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210527\/2013Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGareloi  (VNUM #311070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            UNASSIGNED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A303\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 47 min W 178 deg 47 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5161 ft (1573 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EData and communications from seismic stations at Gareloi were reestablished recently, allowing the Alaska Volcano Observatory to resume locating earthquakes and detecting unrest at this volcano. The aviation color code is now GREEN and the Volcano Alert Level is now designated as NORMAL. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Change in Alert Level to GREEN\/NORMAL due to renewed reception of seismic data.","sentUtc":"2021-05-27","obs":"avo","vName":"Gareloi","vnum":"311070","noticeId":"DOI-USGS-AVO-2021-05-27T12:06:14-08:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-05-27T12:06:14-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-05-27T12:06:14-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210527\/0423Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EKilauea  (VNUM #332010)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tHawaiian Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/H194\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tHawaii\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E4091 ft (1247 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EKilauea Volcano is no longer erupting.  Lava supply to the Halema\u02bbuma\u02bbu lava lake has ceased and sulfur dioxide emissions have decreased to near pre-eruption background levels.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAccordingly, the USGS Hawaiian Volcano Observatory (HVO) is lowering the Volcano Alert Level for ground based hazards from WATCH to ADVISORY and the Aviation Color Code from ORANGE to YELLOW.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHVO continues to closely monitor K\u012blauea Volcano for signs of renewed activity. Should volcanic activity change significantly a new Volcanic Activity Notice will be issued. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHazards are still present on K\u012blauea Volcano and are described below. Residents and visitors should stay informed and follow County of Hawai\u2018i and Hawai\u02bbi Volcanoes National Park guidelines.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMinor fume emanating from previously active areas within Halema\u02bbuma\u02bbu crater is producing a weak plume at the summit of K\u012blauea. Visibility of the plume varies with humidity and temperature and may be stronger in the early morning.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone at this time.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ELava supply to the lava lake appears to have ceased between May 11th and 13th based upon elevation measurements of the lake surface that showed the surface was no longer rising.  Dwindling lava supply over the previous month had caused the active lava lake to shrink to two small ponds by May 11th and was completely crusted over by May 20th.  The last surface activity on the lake was observed on May 23nd.  Changes in the lava lake have been accompanied by a drop in gas emissions to levels close to pre-eruption background level.  Seismic tremor persistent during the eruption has weakened significantly but continues to indicate some shallow magmatic activity.  Since May 11th, there has been weak inflation and an increase in shallow volcano tectonic earthquakes at the summit, suggesting magma entering the system is being stored at depth.  These observations indicate that the eruption in Halema\u2018uma\u2018u at the summit of K\u012blauea Volcano has paused.  It is possible that the Halema\u2018uma\u2018u vent could resume eruption or that K\u012blauea is entering a period of quiescence prior the next eruption.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHVO continues to closely monitor K\u012blauea\u2019s seismicity, deformation, and gas emissions, and maintains visual surveillance of the summit and the East Rift Zone for signs of renewed activity.  There are currently no indications suggesting that a resumption of volcanic activity is imminent.  K\u012blauea remains an active volcano and future eruptions are possible at the summit or elsewhere on the volcano.  Should volcanic activity change significantly a new Volcanic Activity Notice will be issued. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cu\u003EContinuing Hazards\u003C\/u\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nLevels of volcanic gas (sulfur dioxide and carbon dioxide) can remain locally hazardous even though K\u012blauea is no longer erupting.  Sulfur dioxide (SO2) gas emissions have greatly decreased.  However, local concentrations of sulfur dioxide (SO2) or hydrogen sulfide (H2S) may persist in downwind areas, and residents may from time to time notice odors of these gasses.  Significant hazards also remain around Halema\u02bbuma\u02bbu from crater wall instability, ground cracking, and rockfalls that can be enhanced by earthquakes within the area closed to the public. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cu\u003EMore Information:\u003C\/u\u003E\u003Cbr \/\u003E\r\nK\u012blauea activity summary also available by phone: (808) 967-8862\u003Cbr \/\u003E\r\nK\u012blauea webcam images: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/webcams\u003C\/a\u003E\u003Cbr \/\u003E\r\nK\u012blauea photos\/video: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/photo-video-chronology\u003C\/a\u003E\u003Cbr \/\u003E\r\nK\u012blauea lava-flow maps: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/maps\u003C\/a\u003E\u003Cbr \/\u003E\r\nK\u012blauea FAQs: \u003Ca href=\u0022https:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u0022\u003Ehttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/faqs\u003C\/a\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EaskHVO@usgs.gov\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe Hawaiian Volcano Observatory (HVO) continues to closely monitor K\u012blauea's seismicity, deformation, and gas emissions for any sign of reactivation. HVO will continue to issue weekly K\u012blauea updates on Tuesdays until further notice.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSubscribe to these messages: \u003Cbr \/\u003E\r\n\u003Ca href=\u0022https:\/\/volcanoes.usgs.gov\/vns2\/\u0022\u003Ehttps:\/\/volcanoes.usgs.gov\/vns2\/\u003C\/a\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nRecent earthquakes in Hawai\u02bbi (map and list): \u003Ca href=\u0022https:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/earthquakes\u0022\u003Ehttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/earthquakes\u003C\/a\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nExplanation of Volcano Alert Levels and Aviation Color Codes: \u003Ca href=\u0022https:\/\/www.usgs.gov\/natural-hazards\/volcano-hazards\/about-alert-levels\u0022\u003Ehttps:\/\/www.usgs.gov\/natural-hazards\/volcano-hazards\/about-alert-levels\u003C\/a\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"K\u012blauea Volcano is no longer erupting. ORANGE\/WATCH status change to YELLOW\/ADVISORY.","sentUtc":"2021-05-27","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2021-05-26T20:19:24-07:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2021-05-26T20:19:24-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2021-05-26T20:19:24-07:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210526\/1631Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin  (VNUM #311120)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A299\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 4 min W 176 deg 6 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5709 ft (1740 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA short-duration (1-2 minutes) explosive eruption occurred at 21:04 AKDT Tuesday May 25 (5:04 UTC 26 May) and resulted in an ash cloud up to 15,000 ft asl. Since that explosion, seismicity has decreased and satellite images show no further ash emissions. Thus, AVO is  reducing the Aviation Color Code ORANGE and the Volcano Alert Level to WATCH. Additional explosive events are possible, but not certain. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe ash cloud from the initial explosive eruption is still visible in satellite images. See the NWS Alaska Aviation Weather Unit web page for current information. https:\/\/www.weather.gov\/aawu\/sigmets\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nGreat Sitkin is monitored with a local real-time seismic network, which will typically allow AVO to detect changes in unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption would be accomplished using a combination of seismic, infrasound, lightning, and satellite data. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo current emissions\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EDrifting ash cloud still visible in satellite data\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin Volcano is a basaltic andesite volcano that occupies most of the northern half of Great Sitkin Island, a member of the Andreanof Islands group in the central Aleutian Islands. It is located 43 km (26 miles) east of the community of Adak. The volcano is a composite structure consisting of an older dissected volcano and a younger parasitic cone with a 3-km-diameter summit crater. A steep-sided lava dome, emplaced during an eruption in 1974, occupies the center of the crater. Great Sitkin erupted at least three times in the 20th century, most recently in 1974. That eruption produced at least one ash cloud that likely exceeded an altitude of 25,000 ft above sea level. A poorly documented eruption occurred in 1945, also producing a lava dome that was partially destroyed in the 1974 eruption. Within the past 280 years a large explosive eruption produced pyroclastic flows that partially filled the Glacier Creek valley on the southwest flank. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Decrease in Aviation Color Code and Alert level to ORANGE\/WATCH due to decreased actviity.","sentUtc":"2021-05-26","obs":"avo","vName":"Great Sitkin","vnum":"311120","noticeId":"DOI-USGS-AVO-2021-05-26T07:52:57-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-05-26T07:52:57-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-05-26T07:52:57-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210526\/0603Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin  (VNUM #311120)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A298\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 4 min W 176 deg 6 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5709 ft (1740 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA short-duration (1-2 minutes) explosive eruption began at 21:04 AKDT (5:04 UTC 26 May), resulting in an ash cloud up to 15,000 ft asl. Since that explosion, seismicity has decreased and satellite images show that the ash cloud has detached from the vent and is moving towards the east. Additional explosions are possible and the Aviation Color Code remains at RED and the Volcano Alert Level at WARNING.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nGreat Sitkin is monitored with a local real-time seismic network, which will typically allow AVO to detect changes in unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption would be accomplished using a combination of seismic, infrasound, lightning, and satellite data. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E15,000 ft asl\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EDetached from the vent and moving east\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin Volcano is a basaltic andesite volcano that occupies most of the northern half of Great Sitkin Island, a member of the Andreanof Islands group in the central Aleutian Islands. It is located 43 km (26 miles) east of the community of Adak. The volcano is a composite structure consisting of an older dissected volcano and a younger parasitic cone with a 3-km-diameter summit crater. A steep-sided lava dome, emplaced during an eruption in 1974, occupies the center of the crater. Great Sitkin erupted at least three times in the 20th century, most recently in 1974. That eruption produced at least one ash cloud that likely exceeded an altitude of 25,000 ft above sea level. A poorly documented eruption occurred in 1945, also producing a lava dome that was partially destroyed in the 1974 eruption. Within the past 280 years a large explosive eruption produced pyroclastic flows that partially filled the Glacier Creek valley on the southwest flank. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Short-duration explosive eruption began at 21:04 AKDT (5:04 UTC 26 May) ","sentUtc":"2021-05-26","obs":"avo","vName":"Great Sitkin","vnum":"311120","noticeId":"DOI-USGS-AVO-2021-05-25T21:52:32-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-05-25T21:52:32-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-05-25T21:52:32-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210526\/0530Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin  (VNUM #311120)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A297\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 4 min W 176 deg 6 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5709 ft (1740 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EExplosive eruption began at 21:04 AKDT (5:04 UTC 26 May) and is continuing, as confirmed by geophysical data and mariner observations. Initial mariner reports suggest the cloud is as high as 15,000 ft asl, but is still developing.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nGreat Sitkin is monitored with a local real-time seismic network, which will typically allow AVO to detect changes in unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption would be accomplished using a combination of seismic, infrasound, lightning, and satellite data. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E15,000 ft asl\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Estill developing\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin Volcano is a basaltic andesite volcano that occupies most of the northern half of Great Sitkin Island, a member of the Andreanof Islands group in the central Aleutian Islands. It is located 43 km (26 miles) east of the community of Adak. The volcano is a composite structure consisting of an older dissected volcano and a younger parasitic cone with a 3-km-diameter summit crater. A steep-sided lava dome, emplaced during an eruption in 1974, occupies the center of the crater. Great Sitkin erupted at least three times in the 20th century, most recently in 1974. That eruption produced at least one ash cloud that likely exceeded an altitude of 25,000 ft above sea level. A poorly documented eruption occurred in 1945, also producing a lava dome that was partially destroyed in the 1974 eruption. Within the past 280 years a large explosive eruption produced pyroclastic flows that partially filled the Glacier Creek valley on the southwest flank. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosive eruption began at 21:04 AKDT (5:04 UTC 26 May) and is continuing. ","sentUtc":"2021-05-26","obs":"avo","vName":"Great Sitkin","vnum":"311120","noticeId":"DOI-USGS-AVO-2021-05-25T21:19:30-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-05-25T21:19:30-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-05-25T21:19:30-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210526\/0343Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin  (VNUM #311120)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A296\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 4 min W 176 deg 6 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5709 ft (1740 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EOver the past day, there has been an increase in local earthquake activity. These data indicate an increased potential for eruptive activity at Great Sitkin. AVO is raising the Aviation Color Code to ORANGE and the Volcano Alert Level to WATCH. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nLast week, elevated surface temperatures and sulfur dioxide emissions were observed in satellite data, and robust steaming was observed by AVO field crews on Adak Island.    \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nGreat Sitkin is monitored with a local real-time seismic network, which will typically allow AVO to detect changes in unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption would be accomplished using a combination of seismic, infrasound, lightning, and satellite data. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin Volcano is a basaltic andesite volcano that occupies most of the northern half of Great Sitkin Island, a member of the Andreanof Islands group in the central Aleutian Islands. It is located 43 km (26 miles) east of the community of Adak. The volcano is a composite structure consisting of an older dissected volcano and a younger parasitic cone with a 3-km-diameter summit crater. A steep-sided lava dome, emplaced during an eruption in 1974, occupies the center of the crater. Great Sitkin erupted at least three times in the 20th century, most recently in 1974. That eruption produced at least one ash cloud that likely exceeded an altitude of 25,000 ft above sea level. A poorly documented eruption occurred in 1945, also producing a lava dome that was partially destroyed in the 1974 eruption. Within the past 280 years a large explosive eruption produced pyroclastic flows that partially filled the Glacier Creek valley on the southwest flank. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Alert Level change to ORANGE\/WATCH due to increase in unrest.","sentUtc":"2021-05-26","obs":"avo","vName":"Great Sitkin","vnum":"311120","noticeId":"DOI-USGS-AVO-2021-05-25T19:16:06-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-05-25T19:16:06-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-05-25T19:16:06-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210519\/0518Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A274\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeveral small explosions were detected in regional infrasound data earlier today and a small ash cloud was observed in a satellite image from 15:21 (23:21 UTC) on May 17.  As a result AVO is raising the Color Code to Orange and the Alert Level to Watch.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSmall eruptions producing minor ash deposits within the vicinity of the active north crater of Mount Cerberus and ash clouds under 10,000 ft above sea level are typical of recent activity at Semisopochnoi. Weather clouds up to 15,000 ft above sea level currently obscure the volcano. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Eunknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESmall ash clouds are likely being generated during explosions and are likely under 10,000 ft asl.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi is monitored by satellite data, regional infrasound, and lightning detection instruments. An infrasound array on Adak Island may detect explosive emissions from Semisopochnoi with a slight delay (approximately 13 minutes) if atmospheric conditions permit.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosions detected in regional infrasound today and a small ash cloud observed in satellite imagery from May 17.","sentUtc":"2021-05-19","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2021-05-18T20:44:19-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-05-18T20:44:19-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-05-18T20:44:19-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210513\/0058Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUkinrek Maars  (VNUM #312131)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            UNASSIGNED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A249\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 57 deg 50 min W 156 deg 30 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E299 ft (91 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ECommunications with seismic stations in the Ukinrek Maars area have been reestablished allowing the Alaska Volcano Observatory to resume locating earthquakes and detecting unrest at these volcanoes.  The aviation color code is now GREEN and the Volcano Alert Level is now designated as NORMAL.  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Seismic stations are back on line.  ","sentUtc":"2021-05-13","obs":"avo","vName":"Ukinrek Maars","vnum":"312131","noticeId":"DOI-USGS-AVO-2021-05-11T16:23:04-08:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-05-11T16:23:04-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-05-11T16:23:04-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210513\/0058Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUgashik-Peulik  (VNUM #312130)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            UNASSIGNED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A248\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 57 deg 45 min W 156 deg 22 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E4836 ft (1474 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ECommunications with seismic stations in the Ugashik\/Peulik area have been reestablished allowing the Alaska Volcano Observatory to resume locating earthquakes and detecting unrest at these volcanoes.  The aviation color code is now GREEN and the Volcano Alert Level is now designated as NORMAL.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Sesimic stations are back online.","sentUtc":"2021-05-13","obs":"avo","vName":"Ugashik-Peulik","vnum":"312130","noticeId":"DOI-USGS-AVO-2021-05-11T16:18:22-08:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-05-11T16:18:22-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-05-11T16:18:22-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210513\/0057Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin  (VNUM #311120)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A250\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 4 min W 176 deg 6 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5709 ft (1740 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EElevated surface temperatures have been observed in satellite images of Great Sitkin Volcano beginning in January and detections have increased over the past two months.  Satellite detections of increased volcanic gas emissions have been observed beginning on May 10.  In addition, there has been a slight increase in local seismicity over the past two days.  These data indicate a potential for increased eruptive activity at Great Sitkin.  As a result, AVO is raising the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.      \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nGreat Sitkin is monitored with a local real-time seismic network, which will typically allow AVO to detect changes in unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption would be accomplished using a combination of seismic, infrasound, lightning, and satellite data. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin Volcano is a basaltic andesite volcano that occupies most of the northern half of Great Sitkin Island, a member of the Andreanof Islands group in the central Aleutian Islands. It is located 43 km (26 miles) east of the community of Adak. The volcano is a composite structure consisting of an older dissected volcano and a younger parasitic cone with a 3-km-diameter summit crater. A steep-sided lava dome, emplaced during an eruption in 1974, occupies the center of the crater. Great Sitkin erupted at least three times in the 20th century, most recently in 1974. That eruption produced at least one ash cloud that likely exceeded an altitude of 25,000 ft above sea level. A poorly documented eruption occurred in 1945, also producing a lava dome that was partially destroyed in the 1974 eruption. Within the past 280 years a large explosive eruption produced pyroclastic flows that partially filled the Glacier Creek valley on the southwest flank. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Volcanic gas emissions and elevated surface temepratures observed.  ","sentUtc":"2021-05-13","obs":"avo","vName":"Great Sitkin","vnum":"311120","noticeId":"DOI-USGS-AVO-2021-05-11T16:25:51-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-05-11T16:25:51-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-05-11T16:25:51-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210512\/2113Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVeniaminof  (VNUM #312070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A247\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 56 deg 11 min W 159 deg 23 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8225 ft (2507 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo eruptive activity at Veniaminof has been observed in satellite or infrasound data since early April.  The Alaska Volcano Observatory is downgrading the Aviation Color Code and Volcano Alert Level from YELLOW\/ADVISORY to UNASSIGNED\/UNASSIGNED.  The UNASSIGNED status is a result of several seismic station outages impairing the ability of the AVO to assess seismic unrest at the volcano.  These stations may come back online as snowpack decreases.  Any eruptive activity or unrest may still be detected with the remaining seismic stations, in regional infrasound networks, through detection of lightning, and\/or monitoring of satellite images.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nEruptive activity at Veniaminof usually consists of minor ash emissions, lava fountaining and lava flows from the small cone in the summit caldera. Ash emissions are typically confined to the summit crater, but larger events can result in ash fall in nearby communities and drifting airborne ash.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMount Veniaminof volcano is an andesitic stratovolcano with an ice-filled 10-km diameter summit caldera located on the Alaska Peninsula, 775 km (480 mi) southwest of Anchorage and 35 km (22 mi) north of Perryville. Veniaminof is one of the largest (~300 cubic km; 77 cubic mi) and most active volcanic centers in the Aleutian Arc and has erupted at least 14 times in the past 200 years. Recent eruptions in 1993-95, 2005, 2013, and 2018 all occurred at the intracaldera cone and lasted for several months. These eruptions produced lava spattering and fountaining, minor emissions of ash and gas, and small lava flows into intracaldera icefield. Minor ash-producing explosions occurred nearly annually between 2002 and 2010. Previous historical eruptions have produced ash plumes that reached 15,000 to 20,000 ft above sea level (1939, 1956, and 2018) and ash fallout that blanketed areas within about 40 km (25 mi) of the volcano (1939, 2018).\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Eruptive activity has ceased.","sentUtc":"2021-05-12","obs":"avo","vName":"Veniaminof","vnum":"312070","noticeId":"DOI-USGS-AVO-2021-05-11T15:59:07-08:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-05-11T15:59:07-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-05-11T15:59:07-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210507\/1916Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A231\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo ash emissions or explosions from Semisopochnoi have been detected in satellite or infrasound data since April 26. Partly cloudy satellite views this week have shown no recent ash deposits or elevated surface temperatures, and only steam was observed within the north crater of Mount Cerberus. Sulfur dioxide emissions were observed this week on May 1 and 5, signifying continued volcanic unrest. AVO is therefore lowering the Aviation Color Code and Volcano Alert Level to YELLOW\/ADVISORY. AVO will continue to monitor activity at Semisopochnoi with satellite and regional infrasound data.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWhen occurring, small eruptions producing minor ash deposits within the vicinity of the active north crater of Mount Cerberus and ash clouds under 10,000 ft above sea level are typical of activity at Semisopochnoi.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi is monitored by satellite data, regional infrasound, and lightning detection instruments. An infrasound array on Adak Island may detect explosive emissions from Semisopochnoi with a slight delay (approximately 13 minutes) if atmospheric conditions permit.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMatt Haney, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmhaney@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No eruptive activity detected since April 26; Color Code\/Alert Level lowered to YELLOW\/ADVISORY","sentUtc":"2021-05-07","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2021-05-07T10:38:14-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-05-07T10:38:14-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-05-07T10:38:14-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210422\/2148Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A188\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EEruptive activity at Semisopochnoi has gradually increased over the last 24 hours. Satellite views of the volcano show a continuous plume extending 50 miles (80 km) to the south at approximately 8000 feet a.m.s.l.  A regional infrasound array has detected this increase in activity.  The aviation color code and alert level remain at ORANGE\/WATCH; however, AVO will continue to monitor the activity with satellite and regional infrasound data.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSmall eruptions producing minor ash deposits within the vicinity of the volcano and ash clouds under 10,000 ft above sea level are typical of activity at this volcano.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8000 ft a.m.s.l.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Eunknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi is monitored by satellite data, regional infrasound, and lightning detection instruments. An infrasound array on Adak Island may detect explosive emissions from Semisopochnoi with a slight delay (approximately 13 minutes) if atmospheric conditions permit.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMatt Haney, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmhaney@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Increase in eruptive activity over the last 24 hours.","sentUtc":"2021-04-22","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2021-04-22T13:05:06-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-04-22T13:05:06-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-04-22T13:05:06-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210421\/1854Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVeniaminof  (VNUM #312070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A181\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 56 deg 11 min W 159 deg 23 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8225 ft (2507 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EEruptive activity at Veniaminof has declined in the past weeks with no emissions observed since the low-level ash emissions on April 5.  Seismicity has continued to decline, but remains above background levels.  Because of the diminished  activity, the Alaska Volcano Observatory is lowering the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY at Veniaminof volcano. AVO continues to monitor Veniaminof with a local seismic stations, remote infrasound and lightning networks, and satellite and webcam images.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nEruptive activity at Veniaminof usually consists of minor ash emissions, lava fountaining and lava flows from the small cone in the summit caldera. Ash emissions are typically confined to the summit crater, but larger events can result in ash fall in nearby communities and drifting airborne ash.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMount Veniaminof volcano is an andesitic stratovolcano with an ice-filled 10-km diameter summit caldera located on the Alaska Peninsula, 775 km (480 mi) southwest of Anchorage and 35 km (22 mi) north of Perryville. Veniaminof is one of the largest (~300 cubic km; 77 cubic mi) and most active volcanic centers in the Aleutian Arc and has erupted at least 14 times in the past 200 years. Recent eruptions in 1993-95, 2005, 2013, and 2018 all occurred at the intracaldera cone and lasted for several months. These eruptions produced lava spattering and fountaining, minor emissions of ash and gas, and small lava flows into intracaldera icefield. Minor ash-producing explosions occurred nearly annually between 2002 and 2010. Previous historical eruptions have produced ash plumes that reached 15,000 to 20,000 ft above sea level (1939, 1956, and 2018) and ash fallout that blanketed areas within about 40 km (25 mi) of the volcano (1939, 2018).\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMatt Haney, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmhaney@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Eruptive activity has declined","sentUtc":"2021-04-21","obs":"avo","vName":"Veniaminof","vnum":"312070","noticeId":"DOI-USGS-AVO-2021-04-21T10:27:54-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-04-21T10:27:54-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-04-21T10:27:54-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210420\/1935Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUkinrek Maars  (VNUM #312131)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A177\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 57 deg 50 min W 156 deg 30 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E299 ft (91 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe Alaska Volcano Observatory can no longer seismically monitor Ukinrek-Maars because of seismic station outages. As a result, AVO is unable to assess seismic unrest at this volcano. Because it is no longer seismically monitored, AVO will move from volcano alert level NORMAL and aviation color code GREEN to \u0022UNASSIGNED.\u0022 Additional seismic stations may come back online this spring as snowpack decreases. Any eruptive activity or unrest may still be detected with the remaining seismic stations, in regional infrasound networks, through detection of lightning, and\/or monitoring of satellite images.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMatt Haney, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmhaney@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Loss of power to seismic stations prevents local seismic monitoring","sentUtc":"2021-04-20","obs":"avo","vName":"Ukinrek Maars","vnum":"312131","noticeId":"DOI-USGS-AVO-2021-04-20T11:23:52-08:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-04-20T11:23:52-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-04-20T11:23:52-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210420\/0022Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETanaga  (VNUM #311080)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            UNASSIGNED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A175\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 53 min W 178 deg 8 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5925 ft (1806 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ECommunication with two seismic stations has been reestablished.  With four local seismic stations active, the Alaska Volcano Observatory can resume locating earthquakes and detect unrest at Tanaga. The Aviation Color Code is now GREEN and the Volcano Alert Level is now designated as NORMAL.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAny eruptive activity or unrest may also still be detected in regional infrasound networks, through detection of lightning, and\/or monitoring of satellite images. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAaron Wech, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nawech@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Recovery of seismic network","sentUtc":"2021-04-20","obs":"avo","vName":"Tanaga","vnum":"311080","noticeId":"DOI-USGS-AVO-2021-04-19T15:53:09-08:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-04-19T15:53:09-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-04-19T15:53:09-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210420\/0019Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUgashik-Peulik  (VNUM #312130)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A176\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 57 deg 45 min W 156 deg 22 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E4836 ft (1474 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe Alaska Volcano Observatory can no longer seismically monitor Ugashik-Peulik because of seismic station outages. As a result, AVO is unable to assess seismic unrest at this volcano.  Because it is no longer seismically monitored, AVO will move from volcano alert level NORMAL and aviation color code GREEN to \u0022UNASSIGNED.\u0022 Additional seismic stations may come back online this spring as snowpack decreases. Any eruptive activity or unrest may still be detected with the remaining seismic stations, in regional infrasound networks, through detection of lightning, and\/or monitoring of satellite images.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAaron Wech, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nawech@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Loss of power to seismic stations prevents local seismic monitoring","sentUtc":"2021-04-20","obs":"avo","vName":"Ugashik-Peulik","vnum":"312130","noticeId":"DOI-USGS-AVO-2021-04-19T16:00:39-08:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-04-19T16:00:39-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-04-19T16:00:39-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210417\/2049Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A165\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EEruptive activity at Semisopochnoi has declined over the last 24 hours. Satellite views of the volcano have been mostly obscured, but a recent clearing suggests activity has declined and no significant ash plume was observed. As a result, AVO is lowering the Color Code to ORANGE and the Alert Level to WATCH. It is likely that low-level eruptive activity continues and may not be detected by regional infrasound sensors or above the low clouds in satellite data. AVO will continue to monitor the situation.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSmall eruptions producing minor ash deposits within the vicinity of the volcano and ash clouds under 10,000 ft above sea level are typical of activity at this volcano.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Eunknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Eunknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi is monitored by satellite data, regional infrasound, and lightning detection instruments. An infrasound array on Adak Island may detect explosive emissions from Semisopochnoi with a slight delay (approximately 13 minutes) if atmospheric conditions permit.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAaron Wech, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nawech@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Decline in eruptive activity over the last 24 hours.","sentUtc":"2021-04-17","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2021-04-16T12:45:30-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-04-16T12:45:30-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-04-16T12:45:30-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210416\/0315Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A161\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESatellite data suggests ash emissions from Semisopochnoi volcano have been ongoing since early this morning and are continuing with no decrease in intensity.  The ash cloud extends more than 217 mi (350 km) southeast of the volcano with heights up to 20,000 feet (6 km) above sea level.  Based on the length and height of the ash plume and sustained nature of ash emissions, AVO is raising the Color Code to RED and the Alert Level to WARNING.  AVO will continue to monitor the situation.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E20,000  feet above sea level or less.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EContinuous ash cloud extends more than 350 km from volcano.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi is monitored by satellite data, regional infrasound, and lightning detection instruments. An infrasound array on Adak Island may detect explosive emissions from Semisopochnoi with a slight delay (approximately 13 minutes) if atmospheric conditions permit.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAaron Wech, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nawech@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Sustained ash eruption with plume extending SE more than 350 km and 20,000 ft asl","sentUtc":"2021-04-16","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2021-04-15T19:01:24-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-04-15T19:01:24-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-04-15T19:01:24-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210416\/0024Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A160\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESatellite data suggests ash emissions from Semisopochnoi volcano have been ongoing since early this morning and are continuing.  The ash cloud extends up to 217 mi (350 km) southeast of the volcano with heights up to 20,000 feet (6 km) above sea level.  Based on the length and height of the ash plume and ongoing nature of ash emissions, AVO is issuing this update; the Color Code\/Alert Level remains at ORANGE\/WATCH.  AVO will continue to monitor the situation.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E20,000  feet above sea level. or less.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Econtinuous ash cloud extends 350 km from volcano.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi is monitored by satellite data, regional infrasound, and lightning detection instruments. An infrasound array on Adak Island may detect explosive emissions from Semisopochnoi with a slight delay (approximately 13 minutes) if atmospheric conditions permit.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAaron Wech, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nawech@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Ongoing ash emissions with plume extending SE up to 350 km and 20,000 ft asl","sentUtc":"2021-04-16","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2021-04-15T15:49:32-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-04-15T15:49:32-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-04-15T15:49:32-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210405\/2023Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVeniaminof  (VNUM #312070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A126\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 56 deg 11 min W 159 deg 23 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8225 ft (2507 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ELikely low-level ash emissions were observed in web camera views of the summit. Seismic activity remains elevated.  Because of the renewed activity, AVO is raising the Aviation Color Code to ORANGE and the Volcano Alert Level to WATCH at Veniaminof volcano. The Alaska Volcano Observatory continues to monitor Veniaminof with a local seismic network, remote infrasound and lightning networks, and satellite and webcam images.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nEruptive activity at Veniaminof usually consists of minor ash emissions, lava fountaining and lava flows from the small cone in the summit caldera. Ash emissions are typically confined to the summit crater, but larger events can result in ash fall in nearby communities and drifting airborne ash.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10000 feet A.M.S.L.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMount Veniaminof volcano is an andesitic stratovolcano with an ice-filled 10-km diameter summit caldera located on the Alaska Peninsula, 775 km (480 mi) southwest of Anchorage and 35 km (22 mi) north of Perryville. Veniaminof is one of the largest (~300 cubic km; 77 cubic mi) and most active volcanic centers in the Aleutian Arc and has erupted at least 14 times in the past 200 years. Recent eruptions in 1993-95, 2005, 2013, and 2018 all occurred at the intracaldera cone and lasted for several months. These eruptions produced lava spattering and fountaining, minor emissions of ash and gas, and small lava flows into intracaldera icefield. Minor ash-producing explosions occurred nearly annually between 2002 and 2010. Previous historical eruptions have produced ash plumes that reached 15,000 to 20,000 ft above sea level (1939, 1956, and 2018) and ash fallout that blanketed areas within about 40 km (25 mi) of the volcano (1939, 2018).\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMatt Haney, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmhaney@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Likely low-level ash emissions observed at summit","sentUtc":"2021-04-05","obs":"avo","vName":"Veniaminof","vnum":"312070","noticeId":"DOI-USGS-AVO-2021-04-05T11:08:31-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-04-05T11:08:31-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-04-05T11:08:31-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210402\/1735Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin  (VNUM #311360)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            UNASSIGNED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A109\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E9373 ft (2857 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeveral seismic stations in the Shishaldin network are now operating after being offline for many months this winter. Data from these stations have improved the Alaska Volcano Observatory's monitoring capability, and allows for location of small local earthquakes, thus the Aviation Color Code is now GREEN and the Volcano Alert Level NORMAL. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe Alaska Volcano Observatory continues to monitor Shishaldin with the local seismic, GPS, and tilt stations, web camera imagery, remote infrasound and lightning networks, and satellite images.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Ena\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Ena\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 24 confirmed eruptions since 1775. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMatthew Haney, Acting Scientist-in-Charge, USGS \u003Cbr \/\u003E\r\nmhaney@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Decrease in Alert Levels to UNASSIGNED\/UNASSIGNED","sentUtc":"2021-04-02","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2021-03-30T17:14:32-08:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-03-30T17:14:32-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-03-30T17:14:32-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210402\/1733Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVeniaminof  (VNUM #312070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A116\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 56 deg 11 min W 159 deg 23 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8225 ft (2507 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe eruption of Veniaminof that started in late February 2021 appears to have paused. No ash emissions or steam plumes were visible during clear weather conditions on April 1. Elevated surface temperatures continue to be detected in satellite images, but are consistent with heat from recently erupted and now cooling lava flows. No significant seismicity or infrasound has been detected in the last 4 days. As a result, AVO is lowering the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY at Veniaminof volcano. Pauses in eruptions are common, and lava flows and eruption of minor ash plumes could resume suddenly with little or no warning. The Alaska Volcano Observatory continues to monitor Veniaminof with a local seismic network, remote infrasound and lightning networks, and satellite and webcam images.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nEruptive activity at Veniaminof usually consists of minor ash emissions, lava fountaining and lava flows from the small cone in the summit caldera. Ash emissions are typically confined to the summit crater, but larger events can result in ash fall in nearby communities and drifting airborne ash.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMount Veniaminof volcano is an andesitic stratovolcano with an ice-filled 10-km diameter summit caldera located on the Alaska Peninsula, 775 km (480 mi) southwest of Anchorage and 35 km (22 mi) north of Perryville. Veniaminof is one of the largest (~300 cubic km; 77 cubic mi) and most active volcanic centers in the Aleutian Arc and has erupted at least 14 times in the past 200 years. Recent eruptions in 1993-95, 2005, 2013, and 2018 all occurred at the intracaldera cone and lasted for several months. These eruptions produced lava spattering and fountaining, minor emissions of ash and gas, and small lava flows into intracaldera icefield. Minor ash-producing explosions occurred nearly annually between 2002 and 2010. Previous historical eruptions have produced ash plumes that reached 15,000 to 20,000 ft above sea level (1939, 1956, and 2018) and ash fallout that blanketed areas within about 40 km (25 mi) of the volcano (1939, 2018).\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMatthew Haney, Acting Scientist-in-Charge, USGS \u003Cbr \/\u003E\r\nmhaney@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Eruptive activity no longer detected.","sentUtc":"2021-04-02","obs":"avo","vName":"Veniaminof","vnum":"312070","noticeId":"DOI-USGS-AVO-2021-04-01T21:16:15-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-04-01T21:16:15-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-04-01T21:16:15-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210331\/1822Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETanaga  (VNUM #311080)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A108\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 53 min W 178 deg 8 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5925 ft (1806 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ELow power likely due to snow cover has resulted in loss of operation and communication with all but two seismic stations on Tanaga. As a result, the Alaska Volcano Observatory can no longer locate earthquakes that could indicate unrest at Tanaga, and the Aviation Color Code and the Volcano Alert Level are now designated as UNASSIGNED. Additional seismic stations may come back online this spring as snowpack decreases. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAny eruptive activity or unrest may still be detected with the remaining seismic stations, in regional infrasound networks, through detection of lightning, and\/or monitoring of satellite images. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMatthew Haney, Acting Scientist-in-Charge, USGS \u003Cbr \/\u003E\r\nmhaney@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Partial loss of seismic network due to due to snow cover","sentUtc":"2021-03-31","obs":"avo","vName":"Tanaga","vnum":"311080","noticeId":"DOI-USGS-AVO-2021-03-30T17:06:50-08:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-03-30T17:06:50-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-03-30T17:06:50-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210331\/1821Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGareloi  (VNUM #311070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A107\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 47 min W 178 deg 47 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5161 ft (1573 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ELow power likely due to snow cover has resulted in loss of operation and communication with all seismic stations on Gareloi. As a result, the Alaska Volcano Observatory can no longer locate earthquakes or detect seismic signals that could indicate unrest at Gareloi volcano, and the Aviation Color Code and the Volcano Alert Level are now designated as UNASSIGNED. Seismic stations may come back online this spring as snowpack decreases. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAny eruptive activity may still be detected, although with some delay, with regional infrasound networks, detection of lightning, and monitoring of satellite images. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMatthew Haney, Acting Scientist-in-Charge, USGS \u003Cbr \/\u003E\r\nmhaney@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Seismic network offline due to loss of power from snow cover","sentUtc":"2021-03-31","obs":"avo","vName":"Gareloi","vnum":"311070","noticeId":"DOI-USGS-AVO-2021-03-30T16:55:15-08:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-03-30T16:55:15-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-03-30T16:55:15-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210320\/2144Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            UNASSIGNED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A75\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESatellite detections of increased volcanic gas emissions and elevated surface temperatures have been observed at Cleveland Volcano beginning on March 17, 2020.  In addition, a local earthquake occurred on March 10 and it was large enough to be measured on seismometers 100 km away on Umnak Island.  These data indicate a potential for increased eruptive activity at Cleveland.  As a result, AVO is raising the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.   \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCleveland last erupted on June 2, 2020 AKDT (June 1, 2020 UTC) producing a small ash cloud to 22,000 ft.  Explosions from Cleveland typically produce relatively small volcanic ash clouds that dissipate within hours; however, more significant ash emissions are possible. \u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland Volcano is monitored with a limited real-time seismic network. This smaller network inhibits AVO's ability to detect precursory unrest that may lead to an explosive eruption.   Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMatthew Haney, Acting Scientist-in-Charge, USGS \u003Cbr \/\u003E\r\nmhaney@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Increased volcnaic gas emissions observed.  ","sentUtc":"2021-03-20","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2021-03-20T12:54:37-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-03-20T12:54:37-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-03-20T12:54:37-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210319\/1346Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A70\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ERegional infrasound sensors detected a small explosion from Semisopochnoi volcano this morning at 11:50 UTC (03:50 AKDT), indicating an increase in eruptive activity.  As a result, AVO is raising the Aviation Color Code to ORANGE and the Volcano Alert Level to WATCH.  Cloudy weather conditions are obscuring satellite views of the volcano. It is unknown if the explosion produced a low-level ash cloud or local ash deposit.       \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSmall eruptions producing minor ash deposits within the vicinity of the volcano are typical of activity during unrest at Semisopochnoi since September 2018. Local seismic stations have been offline since November 11, 2020. New explosions could occur at anytime with no warning. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi is monitored remotely by satellite and lightning sensors. An infrasound array on Adak Island could detect explosive emissions from Semisopochnoi with a 13 minute delay if atmospheric conditions permit.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMatthew Haney, Acting Scientist-in-Charge, USGS \u003Cbr \/\u003E\r\nmhaney@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Small explosion detected from Semisopocnoi in regional infrasound data.","sentUtc":"2021-03-19","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2021-03-19T05:08:27-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-03-19T05:08:27-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-03-19T05:08:27-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210304\/1804Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVeniaminof  (VNUM #312070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            UNASSIGNED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A39\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 56 deg 11 min W 159 deg 23 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8225 ft (2507 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ERegional infrasound sensors detected a small explosion from Veniaminof volcano this morning at 14:13 UTC (05:13 local time). Satellite and webcam views indicate low-elevation (\u003C 10,000 ft asl) ash emissions heading in the SSE direction, and minor ash deposits are visible at the volcano. As a result, AVO is raising the Aviation Color Code to ORANGE and the Volcano Alert Level to WATCH at Veniaminof volcano. The local seismic data remains offline due to an outage of a satellite link at Port Heiden. However, the Alaska Volcano Observatory continues to monitor Veniaminof with satellite and webcam data and remote infrasound, seismic and lightning networks.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nEruptive activity usually consists of minor ash emissions, lava fountaining and lava flows from the small cone in the summit caldera. Ash emissions are typically confined to the summit crater, but larger events can result in ash fall in nearby communities and drifting airborne ash.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10000 feet asl\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESSE direction\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMount Veniaminof volcano is an andesitic stratovolcano with an ice-filled 10-km diameter summit caldera located on the Alaska Peninsula, 775 km (480 mi) southwest of Anchorage and 35 km (22 mi) north of Perryville. Veniaminof is one of the largest (~300 cubic km; 77 cubic mi) and most active volcanic centers in the Aleutian Arc and has erupted at least 14 times in the past 200 years. Recent eruptions in 1993-95, 2005, 2013, and 2018 all occurred at the intracaldera cone and lasted for several months. These eruptions produced lava spattering and fountaining, minor emissions of ash and gas, and small lava flows into intracaldera icefield. Minor ash-producing explosions occurred nearly annually between 2002 and 2010. Previous historical eruptions have produced ash plumes that reached 15,000 to 20,000 ft above sea level (1939, 1956, and 2018) and ash fallout that blanketed areas within about 40 km (25 mi) of the volcano (1939, 2018).\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EDave Schneider, Acting Scientist-in-Charge, USGS \u003Cbr \/\u003E\r\ndjschneider@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Small explosion and low-level ash emission in webcam and satellite data","sentUtc":"2021-03-04","obs":"avo","vName":"Veniaminof","vnum":"312070","noticeId":"DOI-USGS-AVO-2021-03-04T08:44:23-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-03-04T08:44:23-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-03-04T08:44:23-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210219\/1828Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A24\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo significant volcanic activity has been detected at Semisopochnoi in satellite or regional infrasound data since February 6 and 7 when several small ash deposits were observed in satellite imagery. As  a result, the Alaska Volcano Observatory is decreasing the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSmall eruptions producing minor ash deposits within the vicinity of the volcano are typical of activity during unrest at Semisopochnoi since September 2018. Local seismic stations have been offline since November 11, 2020. New explosions could occur at anytime with no warning. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi is monitored remotely by satellite and lightning sensors. An infrasound array on Adak Island could detect explosive emissions from Semisopochnoi with a 13 minute delay if atmospheric conditions permit.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMatt Haney, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmhaney@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No significant activity observed in satellite and regional infrasound data.","sentUtc":"2021-02-19","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2021-02-17T12:26:20-09:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-02-17T12:26:20-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-02-17T12:26:20-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210208\/2311Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A13\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EHigh-resolution satellite imagery on February 7 shows a second small ash deposit extending at least 3 km to the northeast from North Cerberus Crater on Semisopochnoi Island, similar to the first observed on February 6. Clouds obscured views into the crater and the southern side of the volcano. Any ash clouds associated with these deposits have not been observed and are likely low-level (\u003C10,000 ft) and short-duration. Because of evidence for continued low-level ash emissions, the Alaska Volcano Observatory is increasing the Aviation Color Code to ORANGE and the Volcano Alert Level to WATCH.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSmall eruptions producing minor ash deposits within the vicinity of the volcano are typical of activity during unrest at Semisopochnoi since September 2018. Local seismic stations have been offline since November 11, 2020. New explosions could occur at anytime with no warning. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi is monitored remotely by satellite and lightning sensors. An infrasound array on Adak Island could detect explosive emissions from Semisopochnoi with a 13 minute delay if atmospheric conditions permit.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMatt Haney, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmhaney@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Satellite imagery shows continued, intermittent low-level ash emissions","sentUtc":"2021-02-08","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2021-02-08T13:41:46-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-02-08T13:41:46-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-02-08T13:41:46-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210207\/0451Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            UNASSIGNED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A11\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EHigh-resolution satellite images on February 6 showed a small ash deposit extending less than 3 km to the north from North Cerebus Crater on Semisopochnoi Island. Steam emissions obscured views into the crater. There is no evidence for continuing activity, but observation of a new deposit suggests renewed unrest, and the Alaska Volcano Observatory is increasing the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSmall eruptions producing minor ash deposits within the vicinity of the volcano are typical of activity during unrest at Semisopochnoi since September 2018, with the last detected activity in June 2020. Local seismic stations have been offline since November 11, 2020. New explosions could occur at anytime with no warning. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi is monitored remotely by satellite and lightning sensors. An infrasound array on Adak Island could detect explosive emissions from Semisopochnoi with a 13 minute delay if atmospheric conditions permit.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMatt Haney, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmhaney@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Satellite image shows small ash deposit from North Cerebus","sentUtc":"2021-02-07","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2021-02-06T19:14:40-09:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-02-06T19:14:40-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-02-06T19:14:40-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210115\/2134Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin  (VNUM #311360)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A4\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E9373 ft (2857 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe Shishaldin network has several outages affecting GPS, seismic, and infrasound stations.  Due to the impaired local monitoring stations, the Alaska Volcano Observatory is changing the Aviation Color Code and the Volcano Alert Level UNASSIGNED\/UNASSIGNED. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThis most recent eruptive cycle at Shishaldin began in July 2019 with pauses in activity in late September\/early October 2019 and February 2020. The most recent activity in mid-March was confined to the summit crater except for minor ash deposits near the summit. Only minor rockfalls within the summit crater, not associated with eruptive activity, have been detected since early April. Pauses in eruptions are common at Shishaldin, and therefore eruptive activity could resume with little warning. The Alaska Volcano Observatory will continue to monitor the volcano closely.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe Alaska Volcano Observatory continues to monitor Shishaldin with the local web camera imagery, satellite data and remote infrasound, seismic and lightning networks. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Ena\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Ena\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 24 confirmed eruptions since 1775. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMatt Haney, Acting Scientist-in-Charge, USGS \u003Cbr \/\u003E\r\nmhaney@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nTaryn Lopez, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\ntmlopez@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Decrease in Alert Levels to UNASSIGNED\/UNASSIGNED","sentUtc":"2021-01-15","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2021-01-15T11:49:56-09:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-01-15T11:49:56-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-01-15T11:49:56-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20210115\/2133Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVeniaminof  (VNUM #312070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2021\/A3\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 56 deg 11 min W 159 deg 23 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8225 ft (2507 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EData from the Veniaminof seismic network have not been received since December 8, 2020 due in part to an outage of a satellite link to Port Heiden. Repair efforts are underway, however, due to the absence of local seismic monitoring, the Alaska Volcano Observatory is changing the Aviation Color Code and the Volcano Alert Level UNASSIGNED\/UNASSIGNED. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe Alaska Volcano Observatory continues to monitor Veniaminof with satellite data and remote infrasound, seismic and lightning networks. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMount Veniaminof volcano is an andesitic stratovolcano with an ice-filled 10-km diameter summit caldera located on the Alaska Peninsula, 775 km (480 mi) southwest of Anchorage and 35 km (22 mi) north of Perryville. Veniaminof is one of the largest (~300 cubic km; 77 cubic mi) and most active volcanic centers in the Aleutian Arc and has erupted at least 14 times in the past 200 years. Recent eruptions in 1993-95, 2005, 2013, and 2018 all occurred at the intracaldera cone and lasted for several months. These eruptions produced lava spattering and fountaining, minor emissions of ash and gas, and small lava flows into intracaldera icefield. Minor ash-producing explosions occurred nearly annually between 2002 and 2010. Previous historical eruptions have produced ash plumes that reached 15,000 to 20,000 ft above sea level (1939, 1956, and 2018) and ash fallout that blanketed areas within about 40 km (25 mi) of the volcano (1939, 2018).\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMatt Haney, Acting Scientist-in-Charge, USGS \u003Cbr \/\u003E\r\nmhaney@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nTaryn Lopez, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\ntmlopez@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Decrease in Alert Levels to UNASSIGNED\/UNASSIGNED","sentUtc":"2021-01-15","obs":"avo","vName":"Veniaminof","vnum":"312070","noticeId":"DOI-USGS-AVO-2021-01-15T11:32:53-09:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2021-01-15T11:32:53-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2021-01-15T11:32:53-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20201221\/2014Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EKilauea  (VNUM #332010)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tHawaiian Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2020\/H121\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tHawaii\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E4091 ft (1247 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EK\u012blauea Volcano is erupting. At 9:30 p.m. HST on December 20, the USGS Hawaiian Volcano Observatory (HVO) detected glow within Halema\u02bbuma\u02bbu crater at the summit of K\u012blauea Volcano, indicating that an eruption had commenced within K\u012blauea\u2019s summit caldera. Due to the presence of the water lake at the summit of K\u012blauea and the potential for steam-driven explosions and related hazards, HVO elevated K\u012blauea\u2019s volcano alert level to WARNING and its aviation color code to RED on December 20 as the progression of events was uncertain.   \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe water lake at the summit of K\u012blauea has boiled away and an effusive eruption has commenced, with three vents in the wall of Halema\u02bbuma\u02bbu crater generating lava flows that are contributing to a growing lava lake at the base of Halema\u02bbuma\u02bbu crater.  The eruption is currently confined to Halema\u02bbuma\u02bbu crater. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHVO has decreased K\u012blauea\u2019s volcano alert level to WATCH and its aviation color code to ORANGE, reflecting the less-hazardous nature of the ongoing eruption.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAlert levels and aviation color codes are explained here: https:\/\/www.usgs.gov\/natural-hazards\/volcano-hazards\/about-alert-levels \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHVO continues to monitor the volcano closely and will report any significant changes. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nStay informed about K\u012blauea by following volcano updates and tracking current monitoring data on the HVO web page (https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates) or by signing up to receive updates by email at this site: https:\/\/volcanoes.usgs.gov\/vns2\/. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHVO is in constant communication with Hawai\u2018i Volcanoes National Park as this situation evolves. The eruption is currently taking place entirely within the park. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHVO is in constant communication with the County of Hawai\u2018i Civil Defense Agency.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nRecent Observations:  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAn earthquake swarm beneath K\u012blauea summit began around 8:30 p.m. HST on the evening of December 20, accompanied by ground deformation detected by tiltmeters. A bright glow and vigorous steam plume, generated by the boiling water lake in Halema\u02bbuma\u02bbu, was subsequently observed on HVO webcams beginning approximately 9:30 p.m. HST. HVO scientists responded immediately and visually confirmed from the field that lava was visible within Halema\u02bbuma\u02bbu. The steam plume dissipated shortly thereafter. Activity over the past ten hours has been characterized by three fissure vents on the north and northwest walls of Halema\u02bbuma\u02bbu crater. Fountaining lava at these vents is estimated to be up to 25 m (82 ft) high; the vents are feeding lava flows into the base of Halema\u02bbuma\u02bbu crater, which is being filled with a growing lava lake.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe lava lake has been rising approximately several meters (yards) an hour since the eruption began. The current lava lake exhibits a circulating perimeter, but stagnant center.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe event has been accompanied by only moderate amounts of deformation, indicating deflation of a magma reservoir under Halema\u2019uma\u2019u.  Rates of tilting have decreased slightly since the beginning of the eruption. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nIncreased rates of seismicity in the summit region continue. Some of these earthquakes may be felt. A magnitude-4.4 earthquake located beneath K\u012blauea Volcano's south flank occurred on Sunday, December 20, at 10:36 p.m. HST. \u003Cbr \/\u003E\r\n  \u003Cbr \/\u003E\r\nVisitors to the Hawai'i Volcanoes National Park should note that under southerly (non-trade) wind conditions, rockfalls and explosions can result in a dusting of powdery to gritty ash composed of volcanic glass and rock fragments. These ashfalls represent a minor hazard, but visitors should be aware that dustings of ash at areas around the K\u012blauea summit are possible. \u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\nFor more information on gas hazards at the summit of K\u012blauea, please see: https:\/\/pubs.er.usgs.gov\/publication\/fs20173017 \u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\nFor more information about volcanic ash hazards and precautions at K\u012blauea, please see: http:\/\/hvo.wr.usgs.gov\/hazards\/FAQ_SO2-Vog-Ash\/main.html \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFor discussion of K\u012blauea hazards, please see:  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nhttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards \u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Eunknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Eunknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EHazard Analysis:\u003C\/b\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nBackground \u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nK\u012blauea Volcano had maintained a low level of non-eruptive unrest since the end of the 2018 lower East Rift Zone eruption and summit collapse, which deepened Halema\u02bbuma\u02bbu crater by over 500 meters (1640 feet). Following the 2018 eruption, ground deformation rates indicated steady inflation of K\u012blauea\u2019s summit and at the end of 2018, the HVO monitoring network detected Deflation-Inflation events (DI-events) indicative that the shallow Halema\u02bbuma\u02bbu magma reservoir, located approximately 1.6 km (1 mile) under K\u012blauea caldera, still contained significant amounts of magma.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nIn late July 2019, ponded water appeared at the base of the deepest collapsed area of K\u012blauea\u2019s summit, within the Halema\u02bbuma\u02bbu crater. The body of water grew into a lake as the water sought equilibrium with the surrounding groundwater.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nBeginning in September 2020, increased rates of uplift were observed by Global Positioning System (GPS) stations in K\u012blauea\u2019s upper East Rift Zone and over the past month were observed in K\u012blauea\u2019s summit region.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nIn late November 2020, increased earthquake rates began when seismic stations recorded an average of at least 480 shallow, small-magnitude earthquakes (97% of which were less than or equal to magnitude-2) per week occurring at depths of less than 4 km (2.5 miles) beneath K\u012blauea's summit and upper East Rift Zone. This compares to a rate of fewer than 180 per week following the end of K\u012blauea\u2019s 2018 eruption and through early November 2020.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nOn December 2, 2020, GPS stations and tiltmeters recorded a ground deformation event at K\u012blauea\u2019s summit indicative of a small dike intrusion of magma under the southern part of K\u012blauea caldera.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nOn December 17, 2020, seismometers detected a notable increase in occurrence and duration of long-period seismic signals beneath K\u012blauea\u2019s summit, which are attributed to magmatic activity. Whereas this type of seismicity was observed on average once every few weeks following the 2018 eruption, rates have increased to over a dozen in the past several days.   \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nOther monitoring data streams including volcanic gas and webcam imagery were stable until this eruption commenced. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPrognosis: \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nIt is unclear how long the current eruption will continue. K\u012blauea summit eruptions over the past 200 years have lasted from less than a day to more than a decade. HVO continues to monitor the ongoing eruption and all aspects of the volcano closely; HVO will report any significant changes.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nStay informed about K\u012blauea by following volcano updates and tracking current monitoring data on the HVO web page (https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates) or by signing up to receive updates by email at this site: https:\/\/volcanoes.usgs.gov\/vns2\/. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHVO is in constant communication with National Park Service and County of Hawai\u2018i County Civil Defense and other agencies responsible for public safety. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHVO is in constant communication with the County of Hawai\u2018i Civil Defense Agency. If anything develops that may affect your safety, you will be informed.  Please sign up for Civil Defense notifications by visiting the County of Hawai\u2018i Civil Defense Agency webpage at http:\/\/www.hawaiicounty.gov\/civil-defense\/. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nContacts: askHVO@usgs.gov \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nNext Notice:  K\u012blauea updates will be issued daily. Should volcanic activity change significantly a new VAN will be issued. Regularly scheduled updates are posted at https:\/\/www.usgs.gov\/hvo \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe Hawaiian Volcano Observatory is one of five volcano observatories within the U.S. Geological Survey and is responsible for monitoring volcanoes and earthquakes in Hawai\u02bbi. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHazard Analysis:\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n[General hazards]  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHigh levels of volcanic gas, rockfalls, explosions, and volcanic glass particles are the primary hazards of concern regarding this new activity at K\u012blauea\u2019s summit.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nLarge amounts of volcanic gas\u2014primarily water vapor (H2O), carbon dioxide (CO2), and sulfur dioxide (SO2)\u2014are continuously released during eruptions of K\u012blauea Volcano. As SO2 is released from the summit during this new eruption, it will react in the atmosphere with oxygen, sunlight, moisture, and other gases and particles, and within hours to days, convert to fine particles. The particles scatter sunlight and cause the visible haze that has been observed downwind of K\u012blauea, known as vog (volcanic smog), during previous summit eruptions. Vog creates the potential for airborne health hazards to residents and visitors, damages agricultural crops and other plants, and affects livestock operations. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nRockfalls and minor explosions, such as the ones that occurred during the 2008\u20132018 lava lake eruption at K\u012blauea summit, may occur suddenly and without warning. This underscores the extremely hazardous nature of K\u012blauea caldera rim surrounding Halema\u02bbuma\u02bbu crater, an area that has been closed to the public since late 2007. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPele's hair and other lightweight volcanic glass fragments from the lava fountains within Halema\u02bbuma\u02bbu  will fall downwind of the fissure vents and lava lake, dusting the ground within a few hundred meters (yards) of the vent. High winds may waft lighter particles to greater distances. Residents are urged to minimize exposure to these volcanic particles, which can cause skin and eye irritation similar to volcanic ash. \u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EaskHVO@usgs.gov\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe Hawaiian Volcano Observatory (HVO) continues to closely monitor K\u012blauea's seismicity, deformation, and gas emissions for any sign of reactivation. HVO will continue to issue weekly K\u012blauea updates on Tuesdays until further notice. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"K\u012blauea\u2019s summit eruption that started around 9:30 p.m. HST on December 20 continues","sentUtc":"2020-12-21","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2020-12-21T12:03:03-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2020-12-21T12:03:03-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2020-12-21T12:03:03-08:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20201221\/0841Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EKilauea  (VNUM #332010)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tHawaiian Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2020\/H120\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tHawaii\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E4091 ft (1247 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EShortly after approximately 9:30 p.m. HST, the USGS Hawaiian Volcano Observatory (HVO) detected glow within Halema\u02bbuma\u02bbu crater at the summit of K\u012blauea Volcano. An eruption has commenced within K\u012blauea\u2019s summit caldera. The situation is rapidly evolving and HVO will issue another statement when more information is available.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAccordingly, HVO has elevated K\u012blauea\u2019s volcano alert level to WARNING and its aviation color code to RED. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAlert levels and aviation color codes are explained here: https:\/\/www.usgs.gov\/natural-hazards\/volcano-hazards\/about-alert-levels \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHVO continues to monitor the volcano closely and will report any significant changes. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nStay informed about K\u012blauea by following volcano updates and tracking current monitoring data on the HVO web page (https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates) or by signing up to receive updates by email at this site: https:\/\/volcanoes.usgs.gov\/vns2\/. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHVO is in communication with Hawai\u2018i Volcanoes National Park as this situation, which is taking place within the park, evolves. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHVO is in contact with the County of Hawai\u2018i Civil Defense Agency.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cb\u003ERecent Observations:\u003C\/b\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFor the past several weeks, the USGS Hawaiian Volcano Observatory (HVO) has recorded ground deformation and earthquake rates at K\u012blauea Volcano\u2019s summit and upper East Rift Zone that have exceeded background levels observed since the conclusion of the 2018 lower East Rift Zone eruption and summit collapse.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nBeginning in September 2020, increased rates of uplift were observed by GPS stations in K\u012blauea\u2019s upper East Rift Zone. In the past month, increased uplift has also been measured at GPS stations in K\u012blauea\u2019s summit region. While uplift related to post-collapse inflation of the summit reservoir has been occurring since March of 2019, rates have been steadily increasing in recent months and are currently higher than they have been since the end of the 2018 eruption.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nIn late November 2020, increased earthquake rates began when seismic stations recorded an average of at least 480 shallow, small-magnitude earthquakes (97% of which were less than or equal to magnitude-2) per week occurring at depths of less than 4 km (2.5 miles) beneath K\u012blauea's summit and upper East Rift Zone. This compares to a rate of fewer than 180 per week following the end of K\u012blauea\u2019s 2018 eruption and through early November 2020. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nOn December 2, 2020, GPS stations and tiltmeters recorded a ground deformation event at K\u012blauea\u2019s summit. Accompanied by earthquake swarms, the patterns of ground deformation observed were consistent with a small dike intrusion of magma under the southern part of K\u012blauea caldera. The injection resulted in about 8 cm (3 inches) of uplift of the caldera floor, and modeling suggests that it represented 0.4\u20130.7 million cubic meters (yards) of magma accumulated approximately 1.5 km (1 mile) beneath the surface. Though the intrusion did not reach the surface and erupt, it represented a notable excursion from trends observed in K\u012blauea summit monitoring data streams following the end of the 2018 eruption.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nOn December 17, 2020, seismometers detected a notable increase in occurrence and duration of long-period seismic signals beneath K\u012blauea\u2019s summit, which are attributed to magmatic activity. Whereas this type of seismicity was observed on average once every few weeks following the 2018 eruption, rates have increased to over a dozen in the past several days.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nOther monitoring data streams including volcanic gas and webcam imagery were stable until this eruption.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAn earthquake swarm began on the evening of December 20, accompanied by ground deformation detected by tiltmeters. An orange glow was subsequently observed on IR monitoring cameras and visually beginning approximately 21:36 HST. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Eunknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Eunknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EHazard Analysis:\u003C\/b\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHVO is currently assessing the hazards associated with this eruption and will provide updates as information becomes known.   \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAt the present time, no explosions have been detected. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFor discussion of K\u012blauea hazards, please see:  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nhttps:\/\/www.usgs.gov\/observatories\/hawaiian-volcano-observatory\/hazards and \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nhttps:\/\/www.usgs.gov\/volcanoes\/kilauea\/frequently-asked-questions-about-k-lauea-volcanos-summit-water \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cb\u003ERemarks:\u003C\/b\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cb\u003EBackground\u003C\/b\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSince the early 1800s, when written records of Hawaiian volcanoes began, K\u012blauea has had infrequent periods during which no lava erupted.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe longest known eruptive pause was in 1935-1952, ending with eruption in the caldera. Neither that 17-year pause, nor any other shorter pause, followed partial collapse of the caldera such as the collapse that occurred in the summer of 2018.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFollowing partial caldera collapses, the first eruption outside the caldera took place on the East Rift Zone 17 years after the 1823 collapse, on the Southwest Rift Zone 28 years after the 1840 collapse, and on the Southwest Rift Zone 52 years after the 1868 collapse.  \u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\nAfter partial caldera collapses in 1840 and 1868, lava returned to the caldera within days to a few weeks. The length of the current pause exceeds those earlier post-collapse pauses. \u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\nK\u012blauea Volcano has maintained a low level of non-eruptive unrest since the end of the 2018 lower East Rift Zone eruption and summit collapse, which deepened Halema\u02bbuma\u02bbu crater by over 500 meters (1640 feet). Following the 2018 eruption, ground deformation rates have indicated steady inflation of K\u012blauea\u2019s summit and at the end of 2018, the HVO monitoring network detected Deflation-Inflation events (DI-events) indicative that the shallow Halema\u02bbuma\u02bbu magma reservoir, located approximately 1.6 km (1 mile) under K\u012blauea caldera, still contained significant amounts of magma.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nIn late July 2019, ponded water appeared at the base of the deepest collapsed area of K\u012blauea\u2019s summit, within the Halema\u02bbuma\u02bbu crater. Since then, the body of water has grown into a lake, which continues to rise as it seeks equilibrium with the surrounding groundwater. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\n\u003Cb\u003EPrognosis\u003C\/b\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAll communities on or near K\u012blauea\u2019s summit and rift zones should be prepared. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHVO continues to monitor the volcano closely and will report any significant changes. HVO is in close touch with National Park Service and Hawaii County Civil Defense and other agencies responsible for public safety. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nStay informed about K\u012blauea by following volcano updates and tracking current monitoring data on the HVO web page (https:\/\/www.usgs.gov\/volcanoes\/kilauea\/volcano-updates) or by signing up to receive updates by email at this site: https:\/\/volcanoes.usgs.gov\/vns2\/. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe County of Hawai\u2018i Civil Defense Agency is in constant communications with HVO. If anything develops that may affect your safety, you will be informed.  Please sign up for Civil Defense notifications by visiting the County of Hawai\u2018i Civil Defense Agency webpage at http:\/\/www.hawaiicounty.gov\/civil-defense\/. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nContacts: askHVO@usgs.gov \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EaskHVO@usgs.gov\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe Hawaiian Volcano Observatory (HVO) continues to closely monitor K\u012blauea's seismicity, deformation, and gas emissions for any sign of reactivation. HVO will continue to issue weekly K\u012blauea updates on Tuesdays until further notice. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Shortly after 9:30 p.m. HST an eruption commenced within K\u012blauea\u2019s summit caldera.","sentUtc":"2020-12-21","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2020-12-21T00:05:37-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2020-12-21T00:05:37-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2020-12-21T00:05:37-08:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20201203\/2017Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EKorovin  (VNUM #311161)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2020\/A1279\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 22 min W 174 deg 9 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5030 ft (1533 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EUnrest at Korvin Volcano that began in late October 2020 has subsided. Seismic activity has returned to background levels and satellite observations over the past several weeks have shown no signs of unrest.  Thus, AVO is decreasing the Aviation Color Code and Alert Level to GREEN\/NORMAL. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nKorovin is monitored by local seismic and infrasound sensors, satellite data, regional lightning detection instruments, and reports from local residents. Observations of steaming are not unusual at Korovin and meteorological conditions can enhance its visibility.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Esteam from the summit crater is common\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EKorovin Volcano is a 1553-m-high (5030 ft) stratovolcano located on the northern part of Atka Island in the central Aleutian Islands, about 21 km (13 mi) northwest of the community of Atka, 538 km (350 mi) west of Dutch Harbor, and 1760 km (1100 mi) southwest of Anchorage. The volcano has two distinct summit vents about 0.6 km (2000 ft) apart, that have been the sites of eruptive activity in historical time. The most recently active of the vents maintains a small, roiling, lake that occasionally produces energetic steam emissions. Thermal springs and fumaroles located on and near the volcano indicate an active hydrothermal system. Korovin has erupted several times in the past 200 years, including 1973, 1987, and 1998, and has likely had small ash emissions as recently as 2005. Typical recent Korovin eruptions produce minor amounts of ash and occasional but small lava flows. Reports of the height of the ash plume produced by the 1998 eruption ranged from 4900 to 10,600 m (16,000 to 35,000 feet) above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cbr \/\u003E\r\nMatt Haney, Acting Scientist-in-Charge, USGS \u003Cbr \/\u003E\r\nmhaney@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Decrease in alert level. Volcano is at its background state.","sentUtc":"2020-12-03","obs":"avo","vName":"Korovin","vnum":"311161","noticeId":"DOI-USGS-AVO-2020-12-02T10:13:23-09:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-12-02T10:13:23-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-12-02T10:13:23-09:00","nvewsThreat":""},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20201120\/1900Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2020\/A1265\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo eruptive activity has been detected at Semisopochnoi since mid-June. Seismicity has persisted above background levels since that time, but had decreased to very low levels before a satellite link for transmitting seismic data failed on November 11, 2020. Since that time, no changes have been observed in satellite data, and no explosions have been detected from the Adak Island infrasound array. AVO is lowering the Aviation Color Code to UNASSIGNED and Alert Level to UNASSIGNED for Semisopochnoi due to the lack of evidence for ongoing unrest. Low-level seismic unrest may be continuing undetected. The satellite link is not likely to be reestablished without a site visit.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDespite the lack of eruptive activity since mid-June, Semisopochnoi has been in a state of unrest since September 2018, producing sporadic low-level explosions and elevated seismicity. Future small explosions may occur without warning and typically generate small clouds of volcanic ash that are a hazard in the immediate vicinity of the erupting vent at North Cerberus. More significant ash emissions may be possible, but have not been observed during the 2018\u20132020 eruptive period.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe seismic monitoring network for Semisopochnoi has been offline since November 11, but if atmospheric conditions permit an infrasound array on Adak Island may detect explosion signals from Semisopochnoi with a 13 minute delay. Semisopochnoi is also monitored remotely with satellite observations and lightning sensors.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMatt Haney, Acting Scientist-in-Charge, USGS \u003Cbr \/\u003E\r\nmhaney@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Low seismicity prior to network outage; no activity in satellite","sentUtc":"2020-11-20","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2020-11-19T22:29:17-09:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-11-19T22:29:17-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-11-19T22:29:17-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20201028\/1751Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EKorovin  (VNUM #311161)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 22 min W 174 deg 9 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5030 ft (1533 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EBased on recent satellite detections of significant sulfur dioxide emissions and an increase in seismicity to a level above background, AVO is raising the Aviation Color Code and Alert Level at Korovin Volcano to YELLOW\/ADVISORY.  Discrete earthquakes have been detected over the past two weeks and sulfur dioxide degassing has been detected four times in satellite data on October 15, 20 and 26.  Clear satellite views show no other signs of activity at this time.  AVO will continue to monitor the volcano for signs of volcanic activity.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nKorovin is monitored by local seismic and infrasound sensors, satellite data, and regional lightning detection instruments.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Esulfur dioxide emissions detected in satellite data.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EKorovin Volcano is a 1553-m-high (5030 ft) stratovolcano located on the northern part of Atka Island in the central Aleutian Islands, about 21 km (13 mi) northwest of the community of Atka, 538 km (350 mi) west of Dutch Harbor, and 1760 km (1100 mi) southwest of Anchorage. The volcano has two distinct summit vents about 0.6 km (2000 ft) apart, that have been the sites of eruptive activity in historical time. The most recently active of the vents maintains a small, roiling, lake that occasionally produces energetic steam emissions. Thermal springs and fumaroles located on and near the volcano indicate an active hydrothermal system. Korovin has erupted several times in the past 200 years, including 1973, 1987, and 1998, and has likely had small ash emissions as recently as 2005. Typical recent Korovin eruptions produce minor amounts of ash and occasional but small lava flows. Reports of the height of the ash plume produced by the 1998 eruption ranged from 4900 to 10,600 m (16,000 to 35,000 feet) above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMatt Haney, Acting Scientist-in-Charge, USGS \u003Cbr \/\u003E\r\nmhaney@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Seismicity above background levels and sulfur dioxide emissions.","sentUtc":"2020-10-28","obs":"avo","vName":"Korovin","vnum":"311161","noticeId":"DOI-USGS-AVO-2020-10-28T08:11:25-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-10-28T08:11:25-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-10-28T08:11:25-08:00","nvewsThreat":""},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20201021\/2321Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin  (VNUM #311120)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 4 min W 176 deg 6 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5709 ft (1740 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismicity at Great Sitkin has been steadily decreasing for the past several months and is now at background levels.  No eruptive activity or unusual surface temperatures have been observed in clear satellite imagery. The Alaska Volcano Observatory is returning the Aviation Color Code and Alert Level to GREEN\/NORMAL to reflect these background conditions.  AVO will continue to monitor the volcano using seismic, infrasound, web camera, and satellite observations.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nGreat Sitkin is monitored with a local real-time seismic network, which will typically allow AVO to detect changes in unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption would be accomplished using a combination of seismic, infrasound, lightning, and satellite data. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin Volcano is a basaltic andesite volcano that occupies most of the northern half of Great Sitkin Island, a member of the Andreanof Islands group in the central Aleutian Islands. It is located 43 km (26 miles) east of the community of Adak. The volcano is a composite structure consisting of an older dissected volcano and a younger parasitic cone with a 3-km-diameter summit crater. A steep-sided lava dome, emplaced during an eruption in 1974, occupies the center of the crater. Great Sitkin erupted at least three times in the 20th century, most recently in 1974. That eruption produced at least one ash cloud that likely exceeded an altitude of 25,000 ft above sea level. A poorly documented eruption occurred in 1945, also producing a lava dome that was partially destroyed in the 1974 eruption. Within the past 280 years a large explosive eruption produced pyroclastic flows that partially filled the Glacier Creek valley on the southwest flank. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS \u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Aviation Color Code and Volcano Alert level lowered to GREEN\/NORMAL","sentUtc":"2020-10-21","obs":"avo","vName":"Great Sitkin","vnum":"311120","noticeId":"DOI-USGS-AVO-2020-10-21T12:08:08-08:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-10-21T12:08:08-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-10-21T12:08:08-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20201015\/2025Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EWestdahl  (VNUM #311340)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            UNASSIGNED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 31 min W 164 deg 38 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5118 ft (1560 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe Alaska Volcano Observatory (AVO) has reestablished seismic monitoring instruments at Westdahl volcano and can now confidently monitor seismic unrest at the volcano. With renewed seismic monitoring, the volcano moves from UNASSIGNED to Volcano Alert Level NORMAL and Aviation Color Code GREEN. As at other Alaska volcanoes, AVO will continue to monitor seismic, satellite, infrasound, and lightning data, and reports from pilots and ground observers to detect signs of eruptive activity.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS \u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Seismic network operational; alert level changed to GREEN\/NORMAL","sentUtc":"2020-10-15","obs":"avo","vName":"Westdahl","vnum":"311340","noticeId":"DOI-USGS-AVO-2020-10-15T12:09:21-08:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-10-15T12:09:21-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-10-15T12:09:21-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20201014\/1754Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe periods of seismic tremor that prompted an increase in Pavlof's alert level on September 21 have not been observed in the last two weeks. No eruptive activity or unusual surface temperatures have been observed in clear satellite and web camera images. The Alaska Volcano Observatory is returning the Aviation Color Code and Alert Level to GREEN\/NORMAL to reflect these background conditions. Eruptions at Pavlof often occur with little or no precursory activity, and AVO will continue to monitor the volcano using seismic, infrasound, web camera, and satellite observations. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof Volcano is a snow- and ice-covered stratovolcano located on the southwestern end of the Alaska Peninsula about 953 km (592 mi) southwest of Anchorage. The volcano is about 7 km (4.4 mi) in diameter and has active vents on the north and east sides close to the summit. With over 40 historic eruptions, it is one of the most consistently active volcanoes in the Aleutian arc. Eruptive activity is generally characterized by sporadic Strombolian lava fountaining continuing for a several-month period. Ash plumes as high as 49,000 ft ASL have been generated by past eruptions of Pavlof, and during the March 2016 eruption, ash plumes as high as 40,000 feet above sea level were generated and the ash was tracked in satellite data as distant as eastern Canada. The nearest community, Cold Bay, is located 60 km (37 miles) to the southwest of Pavlof. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS \u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Alert level lowered to GREEN\/NORMAL; seismicity at background","sentUtc":"2020-10-14","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2020-10-13T14:58:49-08:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-10-13T14:58:49-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-10-13T14:58:49-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20200921\/2249Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismic activity has increased at Pavlof over the past 24 hours and is characterized by ongoing tremor. No eruptive activity or emissions from the summit have been observed in cloudy satellite and web camera views. However, the seismic activity represents an increase from background levels and we are thus increasing the the Aviation Color Code and Alert Level to YELLOW\/ADVISORY. This does not mean that an eruption is likely or imminent. However, past eruptions of Pavlof occurred with little or no warning.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof Volcano is a snow- and ice-covered stratovolcano located on the southwestern end of the Alaska Peninsula about 953 km (592 mi) southwest of Anchorage. The volcano is about 7 km (4.4 mi) in diameter and has active vents on the north and east sides close to the summit. With over 40 historic eruptions, it is one of the most consistently active volcanoes in the Aleutian arc. Eruptive activity is generally characterized by sporadic Strombolian lava fountaining continuing for a several-month period. Ash plumes as high as 49,000 ft ASL have been generated by past eruptions of Pavlof, and during the March 2016 eruption, ash plumes as high as 40,000 feet above sea level were generated and the ash was tracked in satellite data as distant as eastern Canada. The nearest community, Cold Bay, is located 60 km (37 miles) to the southwest of Pavlof. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS \u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Alert level raised to YELLOW\/ADVISORY based on elevated seismicity","sentUtc":"2020-09-21","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2020-09-21T14:30:11-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-09-21T14:30:11-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-09-21T14:30:11-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20200908\/2152Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMakushin  (VNUM #311310)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 53 min W 166 deg 55 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5906 ft (1800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismicity at Makushin Volcano has been steadily declining for months, following an earthquake sequence that began on June 15, 2020. This earthquake sequence was focused within an area about 6 miles (10 km) east of the summit at a depth of about 5 miles (8 km). Current observations indicate seismic activity has returned to background levels, and thus the Aviation Color Code and the Volcano Alert Level are being decreased to GREEN\/NORMAL. Other data streams showed no signs of surface changes during the seismic sequence that started in June. The volcano is monitored with a network of seismic instruments, web camera, GPS, satellite data, and regional infrasound and lightning detection instruments. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMakushin volcano is located on northern Unalaska Island in the eastern Aleutian Islands. Makushin is a broad, ice-capped stratovolcano which rises to an elevation of 6680 feet. The summit caldera, 3 km diameter, is the site of frequent steam and minor ash eruptions; however, no large eruptions have occurred in this century. The community of Unalaska and port of Dutch Harbor are located 25 km (16 miles) east of Makushin volcano.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS \u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Aviation Color Code and Alert Level decreased to GREEN\/NORMAL.","sentUtc":"2020-09-08","obs":"avo","vName":"Makushin","vnum":"311310","noticeId":"DOI-USGS-AVO-2020-09-08T12:00:34-08:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-09-08T12:00:34-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-09-08T12:00:34-08:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20200903\/0140Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA sustained pause in volcanic unrest at Cleveland Volcano over the last few months has prompted the Alaska Volcano Observatory to downgrade the Aviation Color Code and Volcano Alert Level from YELLOW\/ADVISORY to UNASSIGNED\/UNASSIGNED. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe last eruptive activity at Cleveland Volcano was a short-lived explosion on the evening (local time) of June 1, 2020. Since then, there has been no evidence from satellite observations of elevated surface temperatures, and there have been no observed changes in the summit crater.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDespite the current pause, the eruptive period at Cleveland, dating back to 2001, remains ongoing and future explosions are likely. These occur without warning and typically generate small clouds of volcanic ash that are a hazard in the immediate vicinity of the volcano, though more significant ash emissions are possible.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland Volcano is monitored with a limited real-time seismic network. This smaller network inhibits AVO's ability to detect precursory unrest that may lead to an explosive eruption, which results in it being designated as UNASSIGNED instead of the color code GREEN assigned to quiescent volcanoes with more instrumentation. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS \u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Decreasing the Alert level to UNASSIGNED","sentUtc":"2020-09-03","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2020-09-02T11:49:16-08:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-09-02T11:49:16-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-09-02T11:49:16-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20200820\/1939Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVeniaminof  (VNUM #312070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 56 deg 11 min W 159 deg 23 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8225 ft (2507 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismic tremor detected in June at Veniaminof has continued intermittently, but with decreasing frequency, and there have been no indications of surface change including increased temperatures or gas emissions. Tremor at Veniaminof in the past has sometimes preceded eruptions, but also can occur and persist for weeks to months and not result in an eruption. Current observations suggest activity has returned to near background, and thus the Aviation Color Code and the Volcano Alert Level are being decreased to GREEN\/NORMAL. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe Alaska Volcano Observatory continues to closely monitor Veniaminof with local seismic sensors, satellite data, web cameras, and remote infrasound and lightning networks. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMount Veniaminof volcano is an andesitic stratovolcano with an ice-filled 10-km diameter summit caldera located on the Alaska Peninsula, 775 km (480 mi) southwest of Anchorage and 35 km (22 mi) north of Perryville. Veniaminof is one of the largest (~300 cubic km; 77 cubic mi) and most active volcanic centers in the Aleutian Arc and has erupted at least 14 times in the past 200 years. Recent eruptions in 1993-95, 2005, 2013, and 2018 all occurred at the intracaldera cone and lasted for several months. These eruptions produced lava spattering and fountaining, minor emissions of ash and gas, and small lava flows into intracaldera icefield. Minor ash-producing explosions occurred nearly annually between 2002 and 2010. Previous historical eruptions have produced ash plumes that reached 15,000 to 20,000 ft above sea level (1939, 1956, and 2018) and ash fallout that blanketed areas within about 40 km (25 mi) of the volcano (1939, 2018).\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS \u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nTaryn Lopez, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ntmlopez@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Decrease in Alert Levels to GREEN\/NORMAL","sentUtc":"2020-08-20","obs":"avo","vName":"Veniaminof","vnum":"312070","noticeId":"DOI-USGS-AVO-2020-08-19T12:46:01-08:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-08-19T12:46:01-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-08-19T12:46:01-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20200624\/2000Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin  (VNUM #311360)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E9373 ft (2857 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismicity at Shishaldin Volcano has decreased to background levels. Satellite views over the past few weeks suggest typical background surface temperatures and light steaming at the summit and no signs of new volcanic activity within the crater. Due to this decrease in activity, the Alaska Volcano Observatory is decreasing the Aviation Color Code for Shishaldin Volcano to GREEN and the Alert Level to NORMAL.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThis most recent eruptive cycle at Shishaldin began in July 2019 with pauses in activity in late September\/early October 2019 and February 2020. The most recent activity in mid-March was confined to the summit crater except for minor ash deposits near the summit. Only minor rockfalls within the summit crater, not associated with eruptive activity, have been detected since early April. Pauses in eruptions are common at Shishaldin, and therefore eruptive activity could resume with little warning. The Alaska Volcano Observatory will continue to monitor the volcano closely.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nShishaldin is monitored by local seismic and infrasound sensors, satellite data, a web camera, a telemetered geodetic network, and distant infrasound and lightning networks.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Ena\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Ena\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 24 confirmed eruptions since 1775. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS \u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJanet Schaefer, Acting Coordinating Scientist, ADGGS\u003Cbr \/\u003E\r\njanet.schaefer@alaska.gov (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Satellite and geophysical data at background","sentUtc":"2020-06-24","obs":null,"vName":"Shishaldin","vnum":"311360","noticeId":null,"colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20200618\/2201Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVeniaminof  (VNUM #312070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 56 deg 11 min W 159 deg 23 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8225 ft (2507 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EOver the past several days there have been periods of seismic tremor and occasional earthquakes at Veniaminof. This represents a departure from background activity. Thus, the Aviation Color Code and the Volcano Alert Level are being increased to YELLOW\/ADVISORY. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThis type of seismic activity typically precedes eruptive activity at Veniaminof but does not mean that an eruption will occur. Eruptive activity usually consists of minor ash emissions, lava fountaining and lava flows from the small cone in the summit caldera. Ash emissions are typically confined to the summit crater, but larger events can result in ash fall in nearby communities and drifting airborne ash.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nVeniaminof volcano is monitored by local seismic sensors, satellite data, web cameras, and remote infrasound and lightning networks. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMount Veniaminof volcano is an andesitic stratovolcano with an ice-filled 10-km diameter summit caldera located on the Alaska Peninsula, 775 km (480 mi) southwest of Anchorage and 35 km (22 mi) north of Perryville. Veniaminof is one of the largest (~300 cubic km; 77 cubic mi) and most active volcanic centers in the Aleutian Arc and has erupted at least 14 times in the past 200 years. Recent eruptions in 1993-95, 2005, 2013, and 2018 all occurred at the intracaldera cone and lasted for several months. These eruptions produced lava spattering and fountaining, minor emissions of ash and gas, and small lava flows into intracaldera icefield. Minor ash-producing explosions occurred nearly annually between 2002 and 2010. Previous historical eruptions have produced ash plumes that reached 15,000 to 20,000 ft above sea level (1939, 1956, and 2018) and ash fallout that blanketed areas within about 40 km (25 mi) of the volcano (1939, 2018).\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS \u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Increase in Alert Levels to YELLOW\/ADVISORY","sentUtc":"2020-06-18","obs":"avo","vName":"Veniaminof","vnum":"312070","noticeId":"DOI-USGS-AVO-2020-06-18T13:22:39-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-06-18T13:22:39-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-06-18T13:22:39-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20200617\/1956Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThere has been no sign of eruptive activity at Cleveland volcano since a short-lived explosion on the evening (local time) of June 1, 2020. Thus, the Aviation Color Code and Volcano Alert Level are being reduced to YELLOW\/ADVISORY. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCleveland is almost always in a state of unrest and explosions will occur without warning. They typically generate small clouds of volcanic ash that are a hazard in the immediate vicinity of the volcano. Ash fall on the upper flanks of the volcano is also common. Flows of mud and\/or hot hot rock are generated in the drainages during some of these explosive events and can extend all the way to coast. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe local geophysical stations and web camera at Cleveland are currently unavailable due to an ongoing network outage. Rapid detection of an ash-producing eruption may be possible using a combination of regional infrasound, lightning, and satellite data.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS \u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Decreasing the Alert level to YELLOW\/ADVISORY","sentUtc":"2020-06-17","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2020-06-17T11:25:49-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-06-17T11:25:49-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-06-17T11:25:49-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20200616\/0202Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMakushin  (VNUM #311310)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 53 min W 166 deg 55 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5906 ft (1800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EOver the past several hours, there have been two earthquakes larger than magnitude 4 in the vicinity of Makushin Volcano. This represents a significant departure from background earthquake activity and may be associated with volcanic unrest. As a result the Aviation Color Code and Volcano Alert Level has been increased to YELLOW\/ADVISORY. This unrest could result a future eruption, however that is not a certainty. Aftershocks continue, as would be expected with earthquakes of this size.  The volcano is monitored with a network of seismic instruments, web camera, GPS, satellite data, and regional infrasound and lightning detection instruments. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo cloud produced.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMakushin volcano is located on northern Unalaska Island in the eastern Aleutian Islands. Makushin is a broad, ice-capped stratovolcano which rises to an elevation of 6680 feet. The summit caldera, 3 km diameter, is the site of frequent steam and minor ash eruptions; however, no large eruptions have occurred in this century. The community of Unalaska and port of Dutch Harbor are located 25 km (16 miles) east of Makushin volcano.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS \u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Aviation Color Code and Alert Level increased to YELLOW\/ADVISORY.","sentUtc":"2020-06-16","obs":"avo","vName":"Makushin","vnum":"311310","noticeId":"DOI-USGS-AVO-2020-06-15T17:31:12-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-06-15T17:31:12-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-06-15T17:31:12-08:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20200602\/0746Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            UNASSIGNED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ERegional infrasound sensors recorded a small explosion today at about 06:32 UTC (10:32 AKST). No other significant activity was detected and local monitoring stations are offline. A small ash plume was observed at 22,000 ft drifting to the south.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nExplosions from Cleveland typically produce relatively small volcanic ash clouds that dissipate within hours; however, more significant ash emissions are possible. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCleveland volcano is monitored with a limited real-time seismic network, which inhibits AVO's ability to detect precursory unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E22,000 ft\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EDrifting to the south\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS \u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Small explosion detected at 06:32 UTC. Raising the alert level to ORANGE\/WATCH.","sentUtc":"2020-06-02","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2020-06-01T23:26:43-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-06-01T23:26:43-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-06-01T23:26:43-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20200507\/2337Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA sustained decline in volcanic unrest at Cleveland Volcano over the last several months has prompted the Alaska Volcano Observatory to downgrade the Aviation Color Code and Volcano Alert Level from YELLOW\/ADVISORY to UNASSIGNED\/UNASSIGNED.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe last explosive eruption at Cleveland occurred on January 9, 2019, and was followed by the extrusion of a small mound of lava in the summit crater. Since then, there has been an overall decrease in detected surface temperature and no observed changes in the summit crater.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCleveland is one of the most active volcanoes of the Aleutian Arc, and the latest eruptive phase has waxed and waned almost annually since 2001. Local seismic, infrasound, and web camera data have been mostly unavailable for several weeks due to an equipment failure in a remote facility. Nonetheless, monitoring of Cleveland continues with regional seismic and infrasound stations on nearby islands. These, along with lightning and satellite data, should allow AVO to detect an ash-producing eruption, if one were to occur.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Sustained decrease in activity; Status dropped to UNASSIGNED","sentUtc":"2020-05-07","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2020-05-07T11:16:01-08:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-05-07T11:16:01-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-05-07T11:16:01-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20200416\/1944Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin  (VNUM #311360)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E9373 ft (2857 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismicity at Shishaldin Volcano has decreased over the past two weeks to levels slightly above background. Similarly, satellite views show no lava or changes within the crater since the start of April, accompanied by a decrease in surface temperatures. Eruptive activity therefore appears to have ended or paused. Due to this decrease in activity, the Alaska Volcano Observatory is decreasing the Aviation Color Code for Shishaldin Volcano to YELLOW and the Alert Level to ADVISORY.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nEruptive activity at Shishaldin paused after the explosion on January 19, 2020, before resuming at a low level mid-March. It is therefore possible for eruptive activity to resume with little warning and AVO will continue to monitor the volcano closely.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nShishaldin is monitored by local seismic and infrasound sensors, satellite data, a web camera, a telemetered geodetic network, and distant infrasound and lightning networks.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Ena\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Ena\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 24 confirmed eruptions since 1775. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Satellite and geophysical data show no eruptive activity","sentUtc":"2020-04-16","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2020-04-16T09:07:51-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-04-16T09:07:51-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-04-16T09:07:51-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20200401\/2016Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismic, infrasound, and satellite data over the past two weeks have shown no signs of eruptive activity at Semisopochnoi. A robust steam plume and a crater lake have been seen in clear satellite images, but no recent ash deposits. Although seismic activity remains above background, it does not appear to be increasing towards an eruption in the short-term. Thus, AVO is reducing the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY. Unrest continues. Seismic activity persists and is characterized by occasional small earthquakes and satellite data show detectable volcanic gas (sulfur dioxide) being emitted from the volcano. Explosive activity could resume with little to no warning.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi is monitored with an on-island seismic network, and remotely by satellite and lightning sensors. An infrasound array on Adak Island could detect explosive emissions from Semisopochnoi with a 13 minute delay if atmospheric conditions permit.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Satellite data show no eruptive activity or ash deposits. Seismicity continues.","sentUtc":"2020-04-01","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2020-04-01T10:45:27-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-04-01T10:45:27-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-04-01T10:45:27-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20200316\/0124Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismicity has been increasing the last few days at Semisopochnoi, and now is characterized by nearly continuous tremor and frequent small explosion signals. This represents a significant increase in activity and the Alaska Volcano Observatory is increasing the Aviation Color Code to ORANGE and the Volcano Alert Level to WATCH. No significant ash emissions have been detected in satellite images; clouds cover much of the island to around 10,000 ft. asl.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi is monitored with an on-island seismic network, and remotely by satellite and lightning sensors. An infrasound array on Adak Island could detect explosive emissions from Semisopochnoi with a 13 minute delay if atmospheric conditions permit.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Small surface explosions detected in local seismic data; no ash detected.","sentUtc":"2020-03-16","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2020-03-15T16:57:21-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-03-15T16:57:21-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-03-15T16:57:21-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20200315\/0631Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin  (VNUM #311360)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E9373 ft (2857 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA high-resolution satellite image today shows lava and what appears to be a new cone within the Shishaldin summit crater. Weak seismic tremor has also been detected. Therefore the Aviation Color Code for Shishaldin Volcano is being raised to ORANGE and the Alert Level to WATCH.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nNo significant ash or lava signatures are apparent outside the summit crater at this time. Eruptive activity could increase with little or no warning resulting in lava flows outside of the crater, lahars, and low-level ash clouds. During the current eruptive cycle, larger ash clouds have also been produced. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nShishaldin is monitored by local seismic and infrasound sensors, satellite data, a web camera, a telemetered geodetic network, and distant infrasound and lightning networks.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Ena\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Ena\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 24 confirmed eruptions since 1775. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Satellite data show low-level eruption confined to summit crater. ","sentUtc":"2020-03-15","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2020-03-14T21:43:52-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-03-14T21:43:52-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-03-14T21:43:52-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20200303\/1938Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EOver the past several weeks seismic activity has decreased at Pavlof.  No eruptive activity or emissions from the summit have been observed since minor steam emissions in late February.  Since activity is now at background levels, we are decreasing the Aviation Color Code and Alert Level to GREEN\/NORMAL.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof Volcano is a snow- and ice-covered stratovolcano located on the southwestern end of the Alaska Peninsula about 953 km (592 mi) southwest of Anchorage. The volcano is about 7 km (4.4 mi) in diameter and has active vents on the north and east sides close to the summit. With over 40 historic eruptions, it is one of the most consistently active volcanoes in the Aleutian arc. Eruptive activity is generally characterized by sporadic Strombolian lava fountaining continuing for a several-month period. Ash plumes as high as 49,000 ft ASL have been generated by past eruptions of Pavlof, and during the March 2016 eruption, ash plumes as high as 40,000 feet above sea level were generated and the ash was tracked in satellite data as distant as eastern Canada. The nearest community, Cold Bay, is located 60 km (37 miles) to the southwest of Pavlof. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Alert level lowered to GREEN\/NORMAL based on decreased seismic activity.","sentUtc":"2020-03-03","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2020-03-03T08:54:02-09:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-03-03T08:54:02-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-03-03T08:54:02-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20200226\/2100Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EWestdahl  (VNUM #311340)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 31 min W 164 deg 38 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5118 ft (1560 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EOver the past several weeks the real-time seismic data stream at Westdahl volcano has ceased due to equipment problems in the field. Repairs are not feasible during the winter months. Without seismic data AVO cannot verify that the volcano is at its normal background state. Thus, the Aviation Color Code and Volcano Alert Levels are now UNASSIGNED. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPlanned field work in April and during the summer will reestablish and improve the seismic monitoring network. At this time, rapid detection of an eruption (if one were to occur) may be possible using a combination of distant seismic and infrasound networks, lightning, and satellite data.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Alert levels changed to UNASSIGNED due to lack of seismic data","sentUtc":"2020-02-26","obs":"avo","vName":"Westdahl","vnum":"311340","noticeId":"DOI-USGS-AVO-2020-02-26T10:18:54-09:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-02-26T10:18:54-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-02-26T10:18:54-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20200226\/2059Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EHigh-resolution satellite data from yesterday afternoon shows no signs of eruptive activity or recent ash deposits at Semisopochnoi. Although seismic activity remains above background, it does not appear to be increasing towards an eruption in the short-term. Thus, AVO is reducing the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nUnrest continues. Seismic activity persists and is characterized by short bursts of volcanic tremor and earthquakes. Explosive activity could resume with little to no warning. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi is monitored with an on-island seismic network, and remotely by satellite and lightning sensors. An infrasound array on Adak Island could detect explosive emissions from Semisopochnoi with a 13 minute delay if atmospheric conditions permit.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Aviation Color Code and Volcano Alert level reduced to YELLOW\/ADVISORY","sentUtc":"2020-02-26","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2020-02-26T10:35:55-09:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-02-26T10:35:55-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-02-26T10:35:55-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20200226\/2058Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin  (VNUM #311120)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 4 min W 176 deg 6 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5709 ft (1740 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EOver the past month, earthquake activity has increased at Great Sitkin Volcano and is now above background levels. Thus, AVO is increasing the Aviation Color Code to YELLOW and the Alert Level to ADVISORY. There has been no evidence of eruptive activity in geophysical data streams or in satellite observations. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nGreat Sitkin is monitored with a local real-time seismic network, which will typically allow AVO to detect changes in unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption would be accomplished using a combination of seismic, infrasound, lightning, and satellite data. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin Volcano is a basaltic andesite volcano that occupies most of the northern half of Great Sitkin Island, a member of the Andreanof Islands group in the central Aleutian Islands. It is located 43 km (26 miles) east of the community of Adak. The volcano is a composite structure consisting of an older dissected volcano and a younger parasitic cone with a 3-km-diameter summit crater. A steep-sided lava dome, emplaced during an eruption in 1974, occupies the center of the crater. Great Sitkin erupted at least three times in the 20th century, most recently in 1974. That eruption produced at least one ash cloud that likely exceeded an altitude of 25,000 ft above sea level. A poorly documented eruption occurred in 1945, also producing a lava dome that was partially destroyed in the 1974 eruption. Within the past 280 years a large explosive eruption produced pyroclastic flows that partially filled the Glacier Creek valley on the southwest flank. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Aviation Color Code and Volcano Alert level raised to YELLOW\/ADVISORY","sentUtc":"2020-02-26","obs":"avo","vName":"Great Sitkin","vnum":"311120","noticeId":"DOI-USGS-AVO-2020-02-26T10:09:50-09:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-02-26T10:09:50-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-02-26T10:09:50-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20200215\/0919Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA series of small explosions and tremor bursts have been detected in seismic data at Semisopochnoi over the past 7 hours and are continuing, representing a significant uptick in activity. No ash plumes have been observed, however low-level ash emissions may accompany these minor explosions. Any ash emissions may be currently obscured by cloud cover at ~10,000 ft. The Alaska Volcano Observatory is therefore raising the Aviation Color Code to ORANGE and the Alert Level to WATCH.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo cloud observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo cloud observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi is monitored with an on-island seismic network, and remotely by satellite and lightning sensors. An infrasound array on Adak Island could detect explosive emissions from Semisopochnoi with a 13 minute delay if atmospheric conditions permit.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nTaryn Lopez, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ntmlopez@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Small explosions and tremor detected; Color Code\/Alert Level raised to ORANGE\/WATCH","sentUtc":"2020-02-15","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2020-02-14T23:57:10-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-02-14T23:57:10-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-02-14T23:57:10-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20200207\/0120Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin  (VNUM #311360)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E9373 ft (2857 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismicity at Shishaldin Volcano has decreased over the past week to levels slightly above background. In addition, satellite views of the volcano over the same period show a decrease in surface temperatures at the summit. Eruptive activity appears to have ended or paused. Due to this decrease in activity, the Alaska Volcano Observatory is decreasing the Aviation Color Code for Shishaldin Volcano to YELLOW and the Alert Level to ADVISORY.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nIt is possible for eruptive activity to resume with little warning and AVO will continue to monitor the volcano closely.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nShishaldin is monitored by local seismic and infrasound sensors, satellite data, a web camera, a telemetered geodetic network, and distant infrasound and lightning networks.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Ena\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Ena\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 24 confirmed eruptions since 1775. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\npeizbekov@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Shishaldin to YELLOW\/ADVISORY based on lack of eruptive activity","sentUtc":"2020-02-07","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2020-02-06T14:44:12-09:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-02-06T14:44:12-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-02-06T14:44:12-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20200120\/0937Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin  (VNUM #311360)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2020\/A63\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E9373 ft (2857 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAsh emissions declined greatly at about 8:30 PM AKST (5:30 UTC 20 January). Seismicity is currently low. The Aviation Color Code is lowered to ORANGE and Alert Level to WATCH.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSatellite images show the detached volcanic cloud drifting east-southeast over the Pacific Ocean. A sigmet from the National Weather Service is still in effect for the detached cloud: https:\/\/www.weather.gov\/aawu\/sigmets\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nLow-level steam and ash emissions may be ongoing from the summit vent. It is possible for more significant eruption to resume with little warning.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nShishaldin is monitored by local seismic and infrasound sensors, satellite data, a web camera, a telemetered geodetic network, and distant infrasound and lightning networks.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Ena\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Ena\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 24 confirmed eruptions since 1775. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Ash emissions stopped at about 8:30 PM AKST. Seismicity low.","sentUtc":"2020-01-20","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2020-01-20T00:16:35-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-01-20T00:16:35-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-01-20T00:16:35-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20200119\/1728Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin  (VNUM #311360)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2020\/A58\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E9373 ft (2857 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EStarting at about 09:30 UTC (12:30 AM AKST), the eruption at Shishaldin intensified, and about two hours ago began generating a more ash-rich volcanic plume. The plume now extends from the summit 150 km east and is as high as about 20,000 ft asl, as seen in satellite data. Seismicity is elevated and the eruption is detected on regional infrasound arrays. The aviation color code is being raised to RED and the volcano alert level to WARNING.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe National Weather Service has issued a SIGMET for this activity. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E20,000 ft asl\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Eheading east\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 24 confirmed eruptions since 1775. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosive eruption ongoing. Plume up to 20,000 ft asl heading east.","sentUtc":"2020-01-19","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2020-01-19T07:50:09-09:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-01-19T07:50:09-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-01-19T07:50:09-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20200109\/2325Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2020\/A17\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThere has been no explosive activity observed at Semisopochnoi since December 19, 2019.  Seismic tremor had decreased over the subsequent weeks with the last observation of seismic tremor on December 29, 2019.  Seismicity has continued to decline, but remains above background. Thus, the Aviation Color Code is lowered to YELLOW and the Alert Level to ADVISORY.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo cloud observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo cloud observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi is monitored with an on-island seismic network, and remotely by satellite and lightning sensors. An infrasound array on Adak Island could detect explosive emissions from Semisopochnoi with a 13 minute delay if atmospheric conditions permit.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Seismic activity decreased; Color Code\/Alert Level lowered to YELLOW\/ADVISORY","sentUtc":"2020-01-09","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2020-01-09T13:45:23-09:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-01-09T13:45:23-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-01-09T13:45:23-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20200108\/0417Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin  (VNUM #311360)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2020\/A12\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E9373 ft (2857 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAsh emissions have declined significantly since about 12:00 PM AKST (21:00 UTC). The Aviation Color Code is lowered to ORANGE and Alert Level to WATCH.     \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSeismicity is currently low. Satellite data from this afternoon suggest continued low-level eruptive activity. It is possible for more explosive activity to resume with little warning. \u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\nShishaldin is monitored by local seismic and infrasound sensors, satellite data, a web camera, a telemetered geodetic network, and distant infrasound and lightning networks. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Ena\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Ena\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 24 confirmed eruptions since 1775. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Significant ash emissions ended at about noon AKST. Low-level eruption continues.","sentUtc":"2020-01-08","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2020-01-07T18:35:20-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-01-07T18:35:20-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-01-07T18:35:20-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20200107\/2133Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin  (VNUM #311360)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2020\/A7\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E9373 ft (2857 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAsh eruption at Shishaldin continues and has intensified as shown in satellite and lightning data. Satellite data suggest the ash cloud is as high as 27,000 ft asl and drifting east-northeast. Aviation Color Code is RED and Alert Level is WARNING.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe National Weather Service has issued a SIGMET for this activity (https:\/\/www.weather.gov\/aawu\/).    \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nIt is possible for the current activity to intensify or decrease with little warning. AVO will issue further information as warranted. \u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\nShishaldin is monitored by local seismic and infrasound sensors, satellite data, a web camera, a telemetered geodetic network, and distant infrasound and lightning networks. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUp to 27,000 ft asl\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EDrifting ENE\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 24 confirmed eruptions since 1775. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Ash emissions ongoing and intensified. Ash cloud to 27,000 ft asl and drifting ENE. ","sentUtc":"2020-01-07","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2020-01-07T12:18:54-09:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-01-07T12:18:54-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-01-07T12:18:54-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20200107\/1839Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin  (VNUM #311360)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2020\/A6\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E9373 ft (2857 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EElevated seismicity since a little after 5:00 AM AKST today is continuing and likely accompanied by ash emissions. A volcanic cloud is visible in satellite data as high as about 23,000 ft asl drifting to the east-northeast of the volcano. Strongly elevated and saturated surface temperatures in satellite imagery are indicative of active lava effusion at the summit vent. Shishaldin remains at Aviation Color Code ORANGE and Alert Level WATCH.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe National Weather Service has issued a SIGMET to 23,000 ft above sea level (https:\/\/www.weather.gov\/aawu\/).    \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nIt is possible for the current activity to intensify or decrease with little warning. AVO will issue further information as warranted. \u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\nShishaldin is monitored by local seismic and infrasound sensors, satellite data, a web camera, a telemetered geodetic network, and distant infrasound and lightning networks. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUp to 23,000 ft asl\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EDrifting ENE\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 24 confirmed eruptions since 1775. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Ash emissions occurring. Ash cloud is up to 23,000 ft asl and drifting east-northeast. ","sentUtc":"2020-01-07","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2020-01-07T09:14:18-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-01-07T09:14:18-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-01-07T09:14:18-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20200103\/2038Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin  (VNUM #311360)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2020\/A1\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E9373 ft (2857 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EEruptive activity occurring at Shishaldin Volcano. Activity this morning has  produced an ash cloud to 20,000 - 24,000 feet that is moving to the E-SE. The level of seismic activity has increased to moderate levels and several pilot observations of ash clouds have been reported to AVO. The ash cloud is visible in satellite data and extends 15-20 miles beyond the volcano to the southeast. Shishaldin remains at Aviation Color Code ORANGE and Alert Level WATCH.  The National Weather Service has issued  SIGMET to 24,000 ft above sea level (https:\/\/www.weather.gov\/aawu\/).    \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nShishadin remains at a heightened level of unrest and explosions may occur with little warning.   \u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\nShishaldin is monitored by local seismic and infrasound sensors, satellite data, a web camera, a telemetered geodetic network, and distant infrasound and lightning networks. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E24,000\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 24 confirmed eruptions since 1775. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMatt Haney, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmhaney@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Eruptive activity ongoing.  Ash cloud to 24,000ft.  ","sentUtc":"2020-01-03","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2020-01-03T11:29:45-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2020-01-03T11:29:45-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2020-01-03T11:29:45-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20191228\/2043Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EOver the past several days seismic activity has increased at Pavlof. No eruptive activity or emissions from the summit have been observed. However, the seismic activity represents an increase from background levels and we are thus increasing the the Aviation Color Code and Alert Level to YELLOW\/ADVISORY. This does not mean that an eruption is likely or imminent. However, past eruptions of Pavlof occurred with little or no warning.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof Volcano is a snow- and ice-covered stratovolcano located on the southwestern end of the Alaska Peninsula about 953 km (592 mi) southwest of Anchorage. The volcano is about 7 km (4.4 mi) in diameter and has active vents on the north and east sides close to the summit. With over 40 historic eruptions, it is one of the most consistently active volcanoes in the Aleutian arc. Eruptive activity is generally characterized by sporadic Strombolian lava fountaining continuing for a several-month period. Ash plumes as high as 49,000 ft ASL have been generated by past eruptions of Pavlof, and during the March 2016 eruption, ash plumes as high as 40,000 feet above sea level were generated and the ash was tracked in satellite data as distant as eastern Canada. The nearest community, Cold Bay, is located 60 km (37 miles) to the southwest of Pavlof. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Alert level raised to Yellow\/Advisory based on increased seismic activity.","sentUtc":"2019-12-28","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2019-12-28T11:30:01-09:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2019-12-28T11:30:01-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2019-12-28T11:30:01-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20191212\/1718Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin  (VNUM #311360)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E9373 ft (2857 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA short-lived explosion from Shishaldin Volcano  has produced an ash cloud to 20,000 - 25,000 feet and is moving to the W-NW.   A tremor burst was observed in seismic data at 7:10 (16:10 UTC) and had a duration of about 3 minutes.  Three lightning stroke were detected.  Shishaldin remains at Aviation Color Code ORANGE and Alert Level WATCH.  The National Weather Service has issued  SIGMET to 25,000 ft above sea level (https:\/\/www.weather.gov\/aawu\/).    \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nShishadin remains at a heightened level of unrest and explosions may occur with little warning.   \u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\nShishaldin is monitored by local seismic and infrasound sensors, satellite data, a web camera, a telemetered geodetic network, and distant infrasound and lightning networks. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E25,000\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERising above cloud deck moving to the W-NW from Shishaldin at approximately 45 knots\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 24 confirmed eruptions since 1775. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EKristi Wallace, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nkwallace@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJanet Schaefer, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njanet.schaefer@alaska.gov (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Short-lived explosion.  Ash cloud to 25,000ft.  ","sentUtc":"2019-12-12","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2019-12-12T07:54:34-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2019-12-12T07:54:34-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2019-12-12T07:54:34-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20191207\/1025Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn eruption signature was detected as strong tremor on local seismic and in regional infrasound networks on Adak Island. The event started at 00:26 AKST \/ 09:26 UTC and has continued with and ongoing but weaker local seismic signal. Any volcanic ash emissions are most likely low-level.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe meteorological cloud deck has been around 10,000' (3000 m) asl over Semisopochnoi and no ash signals have been detected above this height. Nothing has been detected in lightning data.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo cloud observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo cloud observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi is monitored with an on-island seismic network, and remotely by satellite and lightning sensors. An infrasound array on Adak Island could detect explosive emissions from Semisopochnoi with a 13 minute delay if atmospheric conditions permit.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Eruption detected; color code\/activity level raised to ORANGE\/WATCH","sentUtc":"2019-12-07","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2019-09-18T09:33:07-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2019-09-18T09:33:07-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2019-09-18T09:33:07-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20191115\/2116Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESatellite data over the past week and regional seismic and infrasound data show no evidence of eruptive activity. Thus, AVO is lowering the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFuture explosions at Cleveland are likely. They occur without warning and typically produce relatively small volcanic ash clouds that dissipate within hours; however, more significant ash emissions are possible.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano is monitored by only two seismic stations, which restricts AVO's ability to detect precursory unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\npeizbekov@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No evidence of eruptive activity in recent data","sentUtc":"2019-11-15","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2019-11-15T11:27:49-09:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2019-11-15T11:27:49-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2019-11-15T11:27:49-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20191108\/2033Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESatellite data from the past day suggest that slow effusion of lava may have begun in the summit crater. Thus, AVO is increasing the Aviation Color Code to ORANGE and the Volcano Alert Level to WATCH. Highly elevated surface temperatures consistent with lava at the surface have been observed over the past day and robust steaming was seen in web camera and satellite data yesterday. No evidence of explosive, ash-producing activity observed. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFuture explosions at Cleveland are likely and the presence of a lava dome in the summit crater may increase the possibility of this type of activity. They occur without warning and typically produce relatively small volcanic ash clouds that dissipate within hours; however, more significant ash emissions are possible. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano is monitored by only two seismic stations, which restricts AVO's ability to detect precursory unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\npeizbekov@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Possible lava effusion in the summit crater","sentUtc":"2019-11-08","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2019-11-08T11:07:31-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2019-11-08T11:07:31-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2019-11-08T11:07:31-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20191106\/1946Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe Alaska Volcano Observatory is reducing the Aviation Color Code to GREEN and the Alert Level to NORMAL. Small explosion signals from Pavlof were detected on October 19, 2019 on the infrasound network located at Sand Point and on the on the local seismic and infrasound network. Since that time there have not been additional signs of unrest in any of the monitoring data. Pavlof is now considered to have returned to background levels of activity. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof Volcano is a snow- and ice-covered stratovolcano located on the southwestern end of the Alaska Peninsula about 953 km (592 mi) southwest of Anchorage. The volcano is about 7 km (4.4 mi) in diameter and has active vents on the north and east sides close to the summit. With over 40 historic eruptions, it is one of the most consistently active volcanoes in the Aleutian arc. Eruptive activity is generally characterized by sporadic Strombolian lava fountaining continuing for a several-month period. Ash plumes as high as 49,000 ft ASL have been generated by past eruptions of Pavlof, and during the March 2016 eruption, ash plumes as high as 40,000 feet above sea level were generated and the ash was tracked in satellite data as distant as eastern Canada. The nearest community, Cold Bay, is located 60 km (37 miles) to the southwest of Pavlof. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Alert level reduced to Green\/Normal based on no signs of unrest.","sentUtc":"2019-11-06","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2019-11-06T09:40:48-09:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2019-11-06T09:40:48-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2019-11-06T09:40:48-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20191019\/2207Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESmall explosion signals from Pavlof have been detected on the infrasound network located at Sand Point and on the local seismic network today. The volcano is currently obscured by clouds in satellite images. It is unknown if the explosions produced any volcanic ash, but their small size suggests any hazard is currently confined to the area around the volcano's summit. Because these signals are above normal background for Pavlof, the Alaska Volcano Observatory is raising the Aviation Color Code to YELLOW and the Alert Level to ADVISORY. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof Volcano is a snow- and ice-covered stratovolcano located on the southwestern end of the Alaska Peninsula about 953 km (592 mi) southwest of Anchorage. The volcano is about 7 km (4.4 mi) in diameter and has active vents on the north and east sides close to the summit. With over 40 historic eruptions, it is one of the most consistently active volcanoes in the Aleutian arc. Eruptive activity is generally characterized by sporadic Strombolian lava fountaining continuing for a several-month period. Ash plumes as high as 49,000 ft ASL have been generated by past eruptions of Pavlof, and during the March 2016 eruption, ash plumes as high as 40,000 feet above sea level were generated and the ash was tracked in satellite data as distant as eastern Canada. The nearest community, Cold Bay, is located 60 km (37 miles) to the southwest of Pavlof. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Alert level raised to Yellow\/Advisory based on infrasound and seismicity. ","sentUtc":"2019-10-19","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2019-10-19T13:44:42-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2019-10-19T13:44:42-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2019-10-19T13:44:42-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20191017\/1906Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin  (VNUM #311360)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E9373 ft (2857 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EObservations from today show that a new lava effusion event began at Shishaldin on 13 October.  Elevated surface temperatures have been observed at the summit of Shishaldin and low-level seismicity continues on the local network indicating that eruptive activity is likely continuing.  The eruption is confined to the summit area and no ash clouds have been observed.  The Alaska Volcano Observatory is raising the Aviation Color Code for Shishaldin Volcano to ORANGE and the Alert Level to WATCH.   \u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\nShishaldin is monitored by local seismic and infrasound sensors, satellite data, a web camera, a telemetered geodetic network, and distant infrasound and lightning networks. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 24 confirmed eruptions since 1775. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nTaryn Lopez, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ntmlopez@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Low-level eruptive activity observed at Shishaldin. Color code raised to Orange\/Watch.","sentUtc":"2019-10-17","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2019-10-17T10:02:26-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2019-10-17T10:02:26-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2019-10-17T10:02:26-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20190926\/2109Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin  (VNUM #311360)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E9373 ft (2857 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismicity at Shishaldin Volcano has decreased over the past few weeks to levels slightly above background. In addition, satellite views of the volcano over the same period show a decrease in surface temperatures at the summit. Eruptive activity appears to have ended or paused. Due to this decrease in activity, the Alaska Volcano Observatory is decreasing the Aviation Color Code for Shishaldin Volcano to YELLOW and the Alert Level to ADVISORY. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nShishaldin is monitored by local seismic and infrasound sensors, satellite data, a web camera, a telemetered geodetic network, and distant infrasound and lightning networks. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 24 confirmed eruptions since 1775. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Shishaldin alert level decreased from ORANGE\/WATCH to YELLOW\/ADVISORY.","sentUtc":"2019-09-26","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2019-09-26T12:01:42-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2019-09-26T12:01:42-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2019-09-26T12:01:42-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20190918\/2110Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismicity at Semisopochnoi has decreased over the past few weeks with no observations of seismic tremor since September 15.  Low-level sulfur dioxide emissions continue to be observed when conditions permit.  Other than the ongoing refilling of the crater lake, no changes in surface features have been observed since the small, shallow cone that formed around August 24.  Due to the decrease in activity, AVO is lowering the color code\/activity level to YELLOW\/ADVISORY.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo cloud observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo cloud observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi is monitored with an on-island seismic network, and remotely by satellite and lightning sensors. An infrasound array on Adak Island could detect explosive emissions from Semisopochnoi with a 13 minute delay if atmospheric conditions permit.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Seismic activity decreased; color code\/activity level lowered to YELLOW\/ADVISORY","sentUtc":"2019-09-18","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2019-09-18T09:46:46-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2019-09-18T09:46:46-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2019-09-18T09:46:46-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20190906\/1828Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EWrangell  (VNUM #315020)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            UNASSIGNED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 62 deg  W 144 deg 1 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tWrangell Volcanic Field\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E14163 ft (4317 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe Alaska Volcano Observatory (AVO) has reestablished seismic monitoring instruments at Mount Wrangell and can now confidently monitor seismic unrest at the volcano. With renewed seismic monitoring, the volcano moves from \u0022UNASSIGNED\u0022 to Volcano Alert Level NORMAL and Aviation Color Code GREEN. As at other Alaska volcanoes, AVO will continue to use satellite, infrasound, and lightning data, and reports from pilots and ground observers to detect signs of eruptive activity. \u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMt. Wrangell is a 4317 m (14,163 ft) high, andesitic, shield volcano with an ice-filled summit caldera, located in the Wrangell-St. Elias National Park and Preserve. Mt. Wrangell has three small post-caldera craters, named North Crater, East Crater, and Mt. Zanetti.  These craters are all geothermally active, and there are frequent historical reports of steam from Mt. Wrangell.  There are also several questionable reports of historical eruptive activity.  Mt. Wrangell is 330 km (206 mi) northeast of Anchorage.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS, mcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI, dfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"The seismic network on Mount Wrangell volcano has been reestablished.","sentUtc":"2019-09-06","obs":"avo","vName":"Wrangell","vnum":"315020","noticeId":"DOI-USGS-AVO-2019-08-26T13:49:28-08:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2019-08-26T13:49:28-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2019-08-26T13:49:28-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20190906\/1827Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EDutton  (VNUM #312011)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            UNASSIGNED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 11 min W 162 deg 16 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E4833 ft (1473 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe Alaska Volcano Observatory (AVO) has reestablished seismic monitoring instruments at Mount Dutton and can now confidently monitor seismic unrest at the volcano. With renewed seismic monitoring, the volcano moves from \u0022UNASSIGNED\u0022 to Volcano Alert Level NORMAL and Aviation Color Code GREEN. As at other Alaska volcanoes, AVO will continue to use satellite, infrasound, and lightning data, and reports from pilots and ground observers to detect signs of eruptive activity.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMount Dutton is located near the tip of the Alaska Peninsula and lies jointly within the Izembek Wilderness Area and the Alaska Peninsula Wildlife Refuge. Dutton is a snow- and ice-covered stratovlocano which rises to an elevation of 4833 feet. Although it has no historic eruptive activity, intense earthquake swarms occurred at the volcano in 1984 and 1988. Dutton is located 14 km (9 miles) north of King Cove and 30 km (19 miles) east of Cold Bay.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS, mcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGIdfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Dutton moved from UNASSIGNED to GREEN; reestablishment of functioning seismic network.","sentUtc":"2019-09-06","obs":"avo","vName":"Dutton","vnum":"312011","noticeId":"DOI-USGS-AVO-2019-08-26T13:15:36-08:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2019-08-26T13:15:36-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2019-08-26T13:15:36-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20190825\/2051Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVeniaminof  (VNUM #312070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 56 deg 11 min W 159 deg 23 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8225 ft (2507 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EFollowing pilot reports of steaming and the detection of low-level tremor at Veniaminof on August 1, the volcano has returned to background activity. Therefore AVO is lowering the Aviation Color Code to GREEN and the Volcano Alert Level to NORMAL.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Alert level changing to GREEN\/NORMAL","sentUtc":"2019-08-25","obs":"avo","vName":"Veniaminof","vnum":"312070","noticeId":"DOI-USGS-AVO-2019-08-25T09:39:30-08:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2019-08-25T09:39:30-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2019-08-25T09:39:30-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20190801\/2221Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVeniaminof  (VNUM #312070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 56 deg 11 min W 159 deg 23 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8225 ft (2507 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EPilot reports of steaming coincided with low-level tremor recorded at Veniaminof at 20:30 UTC (12:30 AKDT). These observations mark a departure from recent background activity. Therefore AVO is raising the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMatt Haney, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmhaney@usgs.gov  (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCheryl Cameron, Acting Coordinating Scientist, ADGGS\u003Cbr \/\u003E\r\ncheryl.cameron@alaska.gov  (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Alert level changing to YELLOW\/ADVISORY","sentUtc":"2019-08-01","obs":"avo","vName":"Veniaminof","vnum":"312070","noticeId":"DOI-USGS-AVO-2019-08-01T14:06:55-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2019-08-01T14:06:55-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2019-08-01T14:06:55-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20190724\/1939Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin  (VNUM #311360)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E9373 ft (2857 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe Alaska Volcano Observatory is raising the Aviation Color Code to ORANGE and the Alert Level to WATCH at Shishaldin Volcano. Field crews reported an active lava lake and minor spattering within the summit crater during a helicopter overflight. Elevated seismic activity continues similar to the past few weeks along with consistent elevated surface temperatures in satellite images. No lava or ash has erupted outside the summit crater at this time. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nShishaldin is monitored by local seismic and infrasound sensors, satellite data, a web camera, a telemetered geodetic network, and distant infrasound and lightning networks. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 24 confirmed eruptions since 1775. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njflarsen@alaska.edu  (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Shishaldin alert level increased to ORANGE\/WATCH from YELLOW\/ADVISORY.","sentUtc":"2019-07-24","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2019-07-24T11:10:59-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2019-07-24T11:10:59-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2019-07-24T11:10:59-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20190718\/1838Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EElevated seismicity that began yesterday has increased overnight. A stronger tremor signal recorded at 23:39 AKDT \/ 07:39 UTC also produced an infrasound signal on an infrasound array 260 km (161 miles) east on Adak island. This event likely produced ash emissions, and at the current level of continued unrest similar events could occur with little to no warning. The meteorological cloud deck has been around 10,000' (3000 m) asl over Semisopochnoi and no ash signals have been detected above this height. A small plume extending 18 km (11 miles) from the Cerberus vent was visible in satellite data from yesterday, but did not contain an ash signal.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nNothing has been detected in lightning data.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo cloud observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo cloud observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi is monitored with an on-island seismic network, and remotely by satellite and lightning sensors. An infrasound array on Adak Island could detect explosive emissions from Semisopochnoi with a 13 minute delay if atmospheric conditions permit.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njflarsen@alaska.edu  (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Seismic activity increased; color code\/activity level raised to ORANGE\/WATCH","sentUtc":"2019-07-18","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2019-07-18T09:29:51-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2019-07-18T09:29:51-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2019-07-18T09:29:51-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20190715\/1939Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin  (VNUM #311120)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 4 min W 176 deg 6 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5709 ft (1740 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismic activity at Great Sitkin Volcano has decreased to background levels over the past few weeks. There is no evidence of eruptive activity in geophysical data streams or in satellite observations. Thus, AVO is decreasing the Aviation Color Code to GREEN and Alert Level to NORMAL.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nGreat Sitkin is monitored with a local real-time seismic network, which will typically allow AVO to detect changes in unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption would be accomplished using a combination of seismic, infrasound, lightning, and satellite data. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin Volcano is a basaltic andesite volcano that occupies most of the northern half of Great Sitkin Island, a member of the Andreanof Islands group in the central Aleutian Islands. It is located 43 km (26 miles) east of the community of Adak. The volcano is a composite structure consisting of an older dissected volcano and a younger parasitic cone with a 3-km-diameter summit crater. A steep-sided lava dome, emplaced during an eruption in 1974, occupies the center of the crater. Great Sitkin erupted at least three times in the 20th century, most recently in 1974. That eruption produced at least one ash cloud that likely exceeded an altitude of 25,000 ft above sea level. A poorly documented eruption occurred in 1945, also producing a lava dome that was partially destroyed in the 1974 eruption. Within the past 280 years a large explosive eruption produced pyroclastic flows that partially filled the Glacier Creek valley on the southwest flank. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Seismicity returned to background levels. Alert level downgraded to GREEN\/NORMAL.","sentUtc":"2019-07-15","obs":"avo","vName":"Great Sitkin","vnum":"311120","noticeId":"DOI-USGS-AVO-2019-07-15T10:50:31-08:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2019-07-15T10:50:31-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2019-07-15T10:50:31-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20190712\/2109Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin  (VNUM #311360)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E9373 ft (2857 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe Alaska Volcano Observatory is raising the Aviation Color Code to YELLOW and the Alert Level to ADVISORY at Shishaldin Volcano. This change is based on increased seismic activity over the past few weeks, accompanied by elevated surface temperatures at the summit in satellite data. A pilot also observed incandescence in the summit crater during a recent overflight. These observations represent a departure from normal background activity at Shishaldin, but do not necessarily indicate that an eruption will occur.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nShishaldin is monitored by local seismic and infrasound sensors, satellite data, a web camera, a telemetered geodetic network, and distant infrasound and lightning networks. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 24 confirmed eruptions since 1775. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Shishaldin alert level increased to YELLOW\/ADVISORY from GREEN\/NORMAL.","sentUtc":"2019-07-12","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2019-07-12T12:33:03-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2019-07-12T12:33:03-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2019-07-12T12:33:03-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20190705\/0651Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            UNASSIGNED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EDue to an increase in seismicity above background levels over at least the last 8 hours AVO is raising the Aviation Color Code to YELLOW and Alert Level to ADVISORY at Semisopochnoi.  No explosive activity has been detected on the Adak infrasound array and clouds currently obscure satellite views of the volcano.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO will continue to monitor the volcano using satellite, infrasound and seismic data.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo cloud observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo cloud observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\npeizbekov@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Increase in seismic activity above background levels.","sentUtc":"2019-07-05","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2019-07-04T22:25:21-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2019-07-04T22:25:21-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2019-07-04T22:25:21-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20190702\/1740Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMauna Loa  (VNUM #332020)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tHawaiian Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2019\/H28\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 19 deg 28 min W 155 deg 36 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tHawaii\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E13681 ft (4170 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EFor the past several months, earthquake and ground deformation rates at Mauna Loa Volcano have exceeded long term background levels. An eruption is not imminent and current rates are not cause for alarm. However, they do indicate changes in the shallow magma storage system at Mauna Loa.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFollowing a significant earthquake swarm in October 2018, HVO seismic stations have recorded an average of at least 50 shallow, small-magnitude earthquakes per week beneath Mauna Loa's summit, upper Southwest Rift Zone, and upper west flank. This compares to a rate of fewer than 20 per week in the first half of 2018. Shallow earthquakes are occurring in locations similar to those that preceded Mauna Loa's most recent eruptions in 1975 and 1984. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDuring this same time period, GPS instrumentation and satellite radar have measured ground deformation consistent with renewed recharge of the volcano's shallow magma storage system. The current rate and pattern of ground deformation is similar to that measured during inflation of Mauna Loa in 2005 and again from 2014 - 2018.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nTogether, these observations indicate the volcano is no longer at a background level of activity. Accordingly, HVO is elevating the Mauna Loa alert level to ADVISORY and the aviation color code to YELLOW. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAlert levels and aviation color codes are explained here:  https:\/\/volcanoes.usgs.gov\/vhp\/about_alerts.html\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThis increase in alert level does not mean that an eruption is imminent nor that progression to an eruption is certain. A similar increase in activity occurred between 2014 and 2018 and no eruption occurred. \u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPrognosis\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAs has happened before, it is possible that current low-level unrest will continue and vary in intensity for many months, or even years without an eruption. It is also possible that the current unrest is an early precursor to an eventual eruption. At this time, we cannot determine which of these possibilities is more likely.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHVO expects that days or weeks prior to an eruption, monitoring instruments will detect signs of an increased potential for eruption. These signs could include further increases in rates of earthquakes and ground deformation, increases in the sizes of earthquakes, an increase in surface temperatures, or an increase in visible steam plumes or sulfur dioxide emissions. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHowever, it is also possible that the timeframe to eruption could be shorter - hours to days.  All communities on the flanks of the volcano should be prepared.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHVO continues to monitor the volcano closely and will report any significant changes.  HVO is in close touch with Hawaii County Civil Defense and other agencies responsible for public safety. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nStay informed about Mauna Loa by following volcano updates and tracking current monitoring data on the HVO web page (http:\/\/hvo.wr.usgs.gov\/activity\/maunaloastatus.php) or by signing up to receive updates by email at this site: http:\/\/volcanoes.usgs.gov\/vns\/\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHawaii County Civil Defense Agency is in constant communications with HVO.  If anything develops that may affect your safety, you will be informed.\u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\nPlease sign up for Civil Defense notifications by visiting Hawaii County Civil Defense Agency webpage at http:\/\/www.hawaiicounty.gov\/civil-defense\/.\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EaskHVO@usgs.gov\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMauna Loa updates will be issued weekly. Should volcanic activity change significantly a new VAN will be issued. Regularly scheduled updates are posted at http:\/\/hvo.wr.usgs.gov \u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Slightly elevated earthquake and ground deformation; eruption not imminent.  ","sentUtc":"2019-07-02","obs":"hvo","vName":"Mauna Loa","vnum":"332020","noticeId":"DOI-USGS-HVO-2019-07-01T20:15:34-07:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2019-07-01T20:15:34-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2019-07-01T20:15:34-07:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20190612\/1908Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe elevated levels of seismic activity, apparent since about mid-May, have declined to background levels. Therefore we are lowering the Aviation Color Code and Alert Level to GREEN\/NORMAL.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe volcano continues to emit a vapor plume that is occasionally visible in web camera views, and elevated surface temperatures continue to be observed occasionally at the summit crater in high-resolution satellite data. Such observations are common and reflect the steady emission of hot volcanic vapors from a near-vertically oriented vent.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof Volcano is a snow- and ice-covered stratovolcano located on the southwestern end of the Alaska Peninsula about 953 km (592 mi) southwest of Anchorage. The volcano is about 7 km (4.4 mi) in diameter and has active vents on the north and east sides close to the summit. With over 40 historic eruptions, it is one of the most consistently active volcanoes in the Aleutian arc. Eruptive activity is generally characterized by sporadic Strombolian lava fountaining continuing for a several-month period. Ash plumes as high as 49,000 ft ASL have been generated by past eruptions of Pavlof, and during the March 2016 eruption, ash plumes as high as 40,000 feet above sea level were generated and the ash was tracked in satellite data as distant as eastern Canada. The nearest community, Cold Bay, is located 60 km (37 miles) to the southwest of Pavlof. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Alert Level Change to GREEN\/NORMAL due to unrest ending","sentUtc":"2019-06-12","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2019-06-12T09:43:31-08:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2019-06-12T09:43:31-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2019-06-12T09:43:31-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20190602\/1903Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin  (VNUM #311120)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 4 min W 176 deg 6 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5709 ft (1740 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA small steam explosion at 21:40 AKDT June 1 (5:40 UTC June 2) was detected at Great Sitkin Volcano in local seismic data. No corresponding signal was seen in regional infrasound data or cloudy satellite observations. Low-level seismic activity was elevated just before and after the event. In response to this activity, AVO is raising the Aviation Color Code YELLOW and Alert Level to ADVISORY. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nGreat Sitkin is monitored with a local real-time seismic network, which will typically allow AVO to detect changes in unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption would be accomplished using a combination of seismic, infrasound, lightning, and satellite data. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin Volcano is a basaltic andesite volcano that occupies most of the northern half of Great Sitkin Island, a member of the Andreanof Islands group in the central Aleutian Islands. It is located 43 km (26 miles) east of the community of Adak. The volcano is a composite structure consisting of an older dissected volcano and a younger parasitic cone with a 3-km-diameter summit crater. A steep-sided lava dome, emplaced during an eruption in 1974, occupies the center of the crater. Great Sitkin erupted at least three times in the 20th century, most recently in 1974. That eruption produced at least one ash cloud that likely exceeded an altitude of 25,000 ft above sea level. A poorly documented eruption occurred in 1945, also producing a lava dome that was partially destroyed in the 1974 eruption. Within the past 280 years a large explosive eruption produced pyroclastic flows that partially filled the Glacier Creek valley on the southwest flank. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Small steam explosion detected. Alert levels raised.","sentUtc":"2019-06-02","obs":"avo","vName":"Great Sitkin","vnum":"311120","noticeId":"DOI-USGS-AVO-2019-06-02T10:20:37-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2019-06-02T10:20:37-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2019-06-02T10:20:37-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20190515\/2222Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EOver the past day low-frequency seismic tremor has been observed at Pavlof and web camera observations from this morning showed a vigorous steam plume from the summit. This represents an increase from background activity and we are increasing the the Aviation Color Code and Alert Level to YELLOW\/ADVISORY.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThis does not mean that an eruption is likely or imminent. However, past eruptions of Pavlof occurred with little or no warning. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof Volcano is a snow- and ice-covered stratovolcano located on the southwestern end of the Alaska Peninsula about 953 km (592 mi) southwest of Anchorage. The volcano is about 7 km (4.4 mi) in diameter and has active vents on the north and east sides close to the summit. With over 40 historic eruptions, it is one of the most consistently active volcanoes in the Aleutian arc. Eruptive activity is generally characterized by sporadic Strombolian lava fountaining continuing for a several-month period. Ash plumes as high as 49,000 ft ASL have been generated by past eruptions of Pavlof, and during the March 2016 eruption, ash plumes as high as 40,000 feet above sea level were generated and the ash was tracked in satellite data as distant as eastern Canada. The nearest community, Cold Bay, is located 60 km (37 miles) to the southwest of Pavlof. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Alert Level Change to YELLOW\/ADVISORY due to increased unrest","sentUtc":"2019-05-15","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2019-05-15T13:29:26-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2019-05-15T13:29:26-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2019-05-15T13:29:26-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20190430\/2034Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVeniaminof  (VNUM #312070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 56 deg 11 min W 159 deg 23 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8225 ft (2507 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EEruptive activity at Veniaminof ceased in early January 2019, and over the past four months indications of unrest have decreased. Therefore AVO is lowering the Aviation Color Code to GREEN and the Volcano Alert Level to NORMAL.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nLow-level tremor, slightly elevated surface temperatures and minor steam emissions continue, but are now considered typical for this post-eruptive period. This activity will likely continue for many months. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Lowering to GREEN\/NORMAL.","sentUtc":"2019-04-30","obs":"avo","vName":"Veniaminof","vnum":"312070","noticeId":"DOI-USGS-AVO-2019-04-30T12:05:56-08:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2019-04-30T12:05:56-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2019-04-30T12:05:56-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20190327\/0107Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EKilauea  (VNUM #332010)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tHawaiian Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2019\/H19\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tHawaii\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E4091 ft (1247 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EKi\u0304lauea Volcano is quiet. Monitoring data over the past eight months have shown relatively low rates of seismicity, deformation, and gas emission at the summit and East Rift Zone (ERZ) including the area of the 2018 eruption. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAccordingly, the Hawaiian Volcano Observatory (HVO) is lowering the Volcano Alert Level for ground-based hazards from ADVISORY to NORMAL. This means the volcano is at a non-eruptive, background state. The Aviation Color Code is also being lowered from YELLOW to GREEN.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFor definitions of USGS Volcano Alert Levels and Aviation Color Codes, see: https:\/\/volcanoes.usgs.gov\/vhp\/about_alerts.html\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDespite this change, some hazardous conditions remain and are described below. Ki\u0304lauea remains an active volcano, and it will erupt again. Although we expect clear signs prior to a return to eruption, the time frame of warning may be short.  Island of Hawai\u02bbi residents should be familiar with the long-term hazard map for Ki\u0304lauea Volcano and how to stay informed about Ki\u0304lauea activity. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nLava flow hazard map for the Island of Hawai\u02bbi: https:\/\/pubs.usgs.gov\/mf\/1992\/2193\/\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Eonly minor fume from active areas\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enone at this time\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003E Current state of the volcano \u003C\/b\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nK\u012blauea Volcano has maintained a low level of non-eruptive unrest since the end of the lower East Rift Zone eruption and summit collapse in early September 2018.  The past nearly 8 months without active lava at the surface of the volcano marks the longest time interval without eruption since the 17-month period between November 1979 and April 1982.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe total combined sulfur dioxide (SO2) emission rate from the summit, Pu\u02bbu \u02bb\u014c\u02bb\u014d, and lower East Rift Zone fissure vents is currently less than 100 tonnes per day, well below pre-2018 levels.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSeismicity remains relatively low and steady across the volcano. Although weekly earthquake counts are elevated above pre-2018 eruption levels, they do not reflect shallowing of magma that typically occurs prior to eruption outbreaks. Most of these earthquakes are aftershocks of the May 4, 2018, magnitude-6.9 Kalapana earthquake, and they will continue at declining rates. Earthquakes such as the March 13, 2019, magnitude-5.5 south flank event reflect ongoing south flank instability and are not a sign of renewed eruption potential.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nGround deformation continues, but at rates below those during the period of major eruptive activity in 2018.  Deformation rates on the East Rift Zone and at Ki\u0304lauea\u2019s summit are still higher than they were prior to April 2018, but have been slowly decreasing. The middle East Rift Zone between Pu\u02bbu \u02bb\u014c\u02bb\u014d and Highway 130 continues to show ground motion that likely reflects slow refilling of the deep rift zone.  Deformation rates may remain high, as magma entering Ki\u0304lauea\u2019s system is stored, rather than erupted.  Motion on Ki\u0304lauea\u2019s south flank is higher than before May\u2019s magnitude-6.9 earthquake.  This motion is consistent with increased sliding on Ki\u0304lauea\u2019s d\u00e9collement fault in a process called \u201cafterslip,\u201d which is expected following a large earthquake. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cb\u003E What is next at K\u012blauea Volcano?\u003C\/b\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSince the early 1800s, when written records of Hawaiian volcanoes began, K\u012blauea has had infrequent periods during which no lava erupted. The longest known eruptive pause was in 1935-1952, ending with eruption in the caldera. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nNeither this 17-year pause, nor any other shorter pause, followed partial collapse of the caldera such as the collapse that occurred in the summer of 2018. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAfter partial caldera collapses in 1840 and 1868, lava returned to the caldera within days to a few weeks. The length of the current pause already exceeds those earlier post-collapse pauses.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFollowing partial caldera collapses, the first eruption outside the caldera took place on the East Rift Zone 17 years after the 1823 collapse, on the Southwest Rift Zone 28 years after the 1840 collapse, and on the Southwest Rift Zone 52 years after the 1868 collapse.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nOn the basis of these observations, we think it most likely that the next eruption of Ki\u0304lauea will take place in the caldera within a few years, and that the next eruption on one of the volcano\u2019s rift zones will be in a decade or longer. This prognosis assumes a return to K\u012blauea\u2019s general style of behavior for the past 200 years. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThere remains the possibility that Ki\u0304lauea\u2019s behavior may return to the dominantly explosive 300 years preceding the early 1800s. Monitoring and ongoing analysis by HVO may be able to determine in advance which style of behavior will eventually prevail, but it is currently too early to tell.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nImportantly, current monitoring data do not suggest a return to eruptive activity or summit collapse in the coming months.  However, K\u012blauea is one of the most active volcanoes in the world, and additional eruptions will occur. Residents should remain informed of the volcano's status, learn about long-term hazards, and understand how alerts and warnings of volcanic activity are distributed.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nTo receive updates on K\u012blauea or other Hawaiian volcanoes, sign up here:\u003Cbr \/\u003E\r\nhttps:\/\/volcanoes.usgs.gov\/vns2\/\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFor more information please see the HVO web site: https:\/\/volcanoes.usgs.gov\/volcanoes\/kilauea\/geo_hist_summary.html\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cb\u003E Continuing Hazards\u003C\/b\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDespite diminished activity on K\u012blauea, hazardous conditions remain in the East Rift Zone and at the summit of the volcano. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe lower East Rift Zone and Pu\u02bbu \u02bb\u014c\u02bb\u014d lava flow fields include large areas of still-warm, rugged, extremely sharp, and unstable lava surfaces that are subject to collapse. During heavy rain, white-out conditions (from steam produced by rainwater interacting with hot rock) could develop on the lava flows leading to dangerous conditions. Recent collapses of the new shoreline are not known to have occurred, but could happen should the new lava sea cliffs become unstable. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSO2 gas emissions have greatly decreased from lower East Rift Zone vents to a level below instrumental detection on area roadways. However, locally higher concentrations of SO2 or H2S (hydrogen sulfide) may persist and residents in downwind areas may, from time to time, notice odors of these gases.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteaming ground cracks are especially common just west of Highway 130. HVO continues to monitor these cracks periodically for changes and will do so for the foreseeable future. Some of what emanates from these thermal areas is related to decomposition of vegetation and is not degassing magma.  Emissions from these cracks are likely to continue for years and may change with atmospheric conditions and wind. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAround fissure 8, thick accumulations of tephra (fragmental volcanic debris) hide underground hazards such as holes, ground cracks, and collapsed houses and water tanks. Winds can pick up glassy and lightweight fragments, including Pele's hair, and carry them downwind. Tephra can irritate eyes, skin, and respiratory systems, so prolonged exposure should be avoided.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAt the K\u012blauea summit, steep crater walls destabilized by 2018 collapse events and earthquakes may be prone to sudden slumping or rockfalls for years to come, even without further ground shaking. Local concentrations of SO2 or H2S (hydrogen sulfide) remain low but people in downwind areas may from time to time notice odors of these gases. As the water table beneath the caldera adjusts to post-collapse conditions and possibly returns to the area of subsidence, it is possible, but not certain, that hydrothermal explosions could occur.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nK\u012blauea Volcano, as well as the entire Island of Hawai\u02bbi, remains an area of ongoing earthquake hazard.  Additional aftershocks from the May 4, 2018, magnitude-6.9 earthquake and the March 13, 2019, magnitude-5.5 earthquake are expected, and some could be damaging. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHVO continues to closely monitor incoming geologic, seismic, deformation, and gas data for evidence of significant magma shallowing or pressurization that could mean K\u012blauea Volcano\u2019s magmatic system is building toward renewed activity.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cb\u003EFrom Hawaii County Civil Defense: \u003C\/b\u003EHawaii County Civil Defense advises that lava flows and features created by the 2018 eruption are primarily on private property and persons are asked to be respectful and not enter or park on private property.   \u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EaskHVO@usgs.gov\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe Hawaiian Volcano Observatory (HVO) continues to closely monitor K\u012blauea's seismicity, deformation, and gas emissions for any sign of reactivation. HVO will continue to issue weekly K\u012blauea updates on Tuesdays until further notice. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"The volcano is quiet. Seismic and deformation ratess are low across the volcano. ","sentUtc":"2019-03-27","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2019-03-26T17:49:22-07:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2019-03-26T17:49:22-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2019-03-26T17:49:22-07:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20190225\/2030Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin  (VNUM #311120)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 4 min W 176 deg 6 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5709 ft (1740 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EEarthquake activity at Great Sitkin Volcano has decreased to background levels over the past month. There are no evidence of explosive activity in geophysical data streams or in satellite observations. Thus, AVO is decreasing the Aviation Color Code GREEN and Alert Level to NORMAL. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\npeizbekov@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Seismicity has decreased to background levels. Alert levels lowered.","sentUtc":"2019-02-25","obs":"avo","vName":"Great Sitkin","vnum":"311120","noticeId":"DOI-USGS-AVO-2019-02-25T11:25:29-09:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2019-02-25T11:25:29-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2019-02-25T11:25:29-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20190225\/2024Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESatellite data from 22 February 2019  and regional seismic and infrasound data show no evidence of eruptive activity. Thus, AVO is lowering the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFuture explosions at Cleveland  are likely. They occur without warning and typically produce relatively small volcanic ash clouds that dissipate within hours; however, more significant ash emissions are possible. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano does not have any functioning equipment near the volcano, which restricts AVO's ability to detect precursory unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of regional seismic, infrasound, lightning, and satellite data. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\npeizbekov@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Data show no signs of eruptive activity.","sentUtc":"2019-02-25","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2019-02-25T11:11:41-09:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2019-02-25T11:11:41-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2019-02-25T11:11:41-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20190202\/0031Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EDutton  (VNUM #312011)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 11 min W 162 deg 16 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E4833 ft (1473 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAVO can no longer seismically monitor Mount Dutton volcano due to the lack of a functioning seismic network there. As a result, AVO is unable to (1) assess whether Dutton may be building towards an eruption and (2) quickly confirm or dismiss reports of activity at the volcano.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nBecause Dutton is no longer seismically monitored, it will move from volcano alert level Normal and aviation color code Green to \u0022unassigned.\u0022 As at other volcanoes without real-time seismic networks, AVO will continue to use satellite data, regional infrasound, lightning, and reports from pilots and ground observers to detect signs of eruptive activity.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMount Dutton is located near the tip of the Alaska Peninsula and lies jointly within the Izembek Wilderness Area and the Alaska Peninsula Wildlife Refuge. Dutton is a snow- and ice-covered stratovlocano which rises to an elevation of 4833 feet. Although it has no historic eruptive activity, intense earthquake swarms occurred at the volcano in 1984 and 1988. Dutton is located 14 km (9 miles) north of King Cove and 30 km (19 miles) east of Cold Bay.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Dutton moved from GREEN to UNASSIGNED due to lack of functioning seismic network.","sentUtc":"2019-02-02","obs":"avo","vName":"Dutton","vnum":"312011","noticeId":"DOI-USGS-AVO-2019-02-01T14:44:32-09:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2019-02-01T14:44:32-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2019-02-01T14:44:32-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20190117\/2025Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2019\/A53\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESatellite data show that starting around 12 January, a new and growing lava dome is present in Cleveland's summit crater. Thus, AVO is raising the Aviation Color Code to ORANGE and the Volcano Alert Level to WATCH.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe presence of the lava dome may increase the likelihood of explosive activity at the volcano. Explosions at Cleveland usually occur without warning and typically produce relatively small volcanic ash clouds that dissipate within hours; however, more significant ash emissions are possible. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano is monitored by only one seismic station, which restricts AVO's ability to detect precursory unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\npeizbekov@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Satellite data show new lava dome in summit crater. ","sentUtc":"2019-01-17","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2019-01-17T11:09:10-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2019-01-17T11:09:10-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2019-01-17T11:09:10-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20190107\/2146Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe last detected explosive activity at Cleveland volcano occurred December 29, 2018 UTC (December 28 local time). We have no evidence of significant eruptive activity since that time. Thus, AVO is lowering the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFuture explosive activity is likely, and explosions usually occur without warning. Explosions from Cleveland typically produce relatively small volcanic ash clouds that dissipate within hours; however, more significant ash emissions are possible. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCleveland volcano is monitored by only one seismic station, which restricts AVO's ability to detect precursory unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No activity detected in geophysical or satellite data since Dec. 29 explosion.","sentUtc":"2019-01-07","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2018-06-10T12:47:53-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-06-10T12:47:53-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-06-10T12:47:53-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20190104\/1953Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVeniaminof  (VNUM #312070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2019\/A10\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 56 deg 11 min W 159 deg 23 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8225 ft (2507 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EEruptive activity at Veniaminof has paused or stopped over the past week. Therefore AVO is lowering the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY. Seismic events continue, indicative of continued unrest.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPauses in eruptive activity are common at Veniaminof and resumed lava effusion and\/or ash emissions could resume at any time without significant seismic precursors.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Eruptive activity paused or stopped. Lowering to YELLOW\/ADVISORY","sentUtc":"2019-01-04","obs":"avo","vName":"Veniaminof","vnum":"312070","noticeId":"DOI-USGS-AVO-2019-01-04T10:33:58-09:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2019-01-04T10:33:58-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2019-01-04T10:33:58-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20181229\/0354Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ELocal seismic sensors recorded a short-lived explosion today at 3:17 UTC December 29 (18:17 AKST December 28). A pilot report indicates an ash cloud to 17,000 ft asl. Local winds are from the west. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nExplosions from Cleveland typically produce relatively small volcanic ash clouds that dissipate within hours; however, more significant ash emissions are possible. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCleveland volcano is monitored with a limited real-time seismic network, which inhibits AVO's ability to detect precursory unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E17,000 ft asl\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Ewinds are from west\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Short-lived explosion detected at 18:17 AKST. Report of ash to 17,000 ft asl.","sentUtc":"2018-12-29","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2018-12-28T18:49:57-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-12-28T18:49:57-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-12-28T18:49:57-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20181219\/2035Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo eruptive activity has been detected at Semisopochnoi since November 1 when a satellite link for transmitting seismic data failed. Since that time, no changes have been observed in satellite data, and no explosions have been detected from the Adak Island infrasound array; the last explosion detected by infrasound was October 31.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO is lowering the Aviation Color Code to UNASSIGNED and Alert Level to UNASSIGNED for Semisopochnoi due to the lack of evidence for ongoing eruptive activity. Seismic unrest may be continuing undetected. Pauses in eruptions lasting weeks to months are known to occur during volcanic eruptions. A return to eruptive activity may occur with little or no warning. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo cloud observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo cloud observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe seismic monitoring network for Semisopochnoi has been offline since November 1, but if atmospheric conditions permit an infrasound array on Adak Island may detect explosion signals from Semisopochnoi with a 13 minute delay. Semisopochnoi is also monitored remotely with satellite observations and lightning sensors.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Satellite observations suggest no recent volcanic activity","sentUtc":"2018-12-19","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2018-12-19T10:23:15-09:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-12-19T10:23:15-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-12-19T10:23:15-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20181212\/2121Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ELocal seismic sensors recorded a small explosion today at 20:53 UTC (11:53 AKST). No ash cloud has yet been detected in satellite imagery. No other significant activity was detected.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nExplosions from Cleveland typically produce relatively small volcanic ash clouds that dissipate within hours; however, more significant ash emissions are possible. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCleveland volcano is monitored with a limited real-time seismic network, which inhibits AVO's ability to detect precursory unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot known\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\npeizbekov@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Small explosion detected at 11:53 AKST; Alert level raised to ORANGE\/WATCH.","sentUtc":"2018-12-12","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2018-12-12T13:15:08-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-12-12T13:15:08-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-12-12T13:15:08-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20181122\/2005Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVeniaminof  (VNUM #312070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 56 deg 11 min W 159 deg 23 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8225 ft (2507 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAsh emissions at Veniaminof have decreased since yesterday afternoon but continue at lower levels. Therefore AVO is lowering the Aviation Color Code to ORANGE and the Volcano Alert Level to WATCH. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPlease reference https:\/\/www.weather.gov\/aawu\/sigmets for updated guidance on airborne ash hazards from the National Weather Service. \u003Cbr \/\u003E\r\n \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUp to ~10,000 ft\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EContinuous low-level ash emissions observed in webcam\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAsh fall remains possible in nearby communities. National Weather Service  information about ashfall is available here: https:\/\/www.weather.gov\/afc\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Ash emissions continue at decreased levels. Lowering to ORANGE\/WATCH","sentUtc":"2018-11-22","obs":"avo","vName":"Veniaminof","vnum":"312070","noticeId":"DOI-USGS-AVO-2018-11-22T10:30:53-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-11-22T10:30:53-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-11-22T10:30:53-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20181121\/2059Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo eruptive activity has been detected at Semisopochnoi since November 1 when a satellite link for transmitting seismic data failed. Since that time, no changes have been observed in satellite data, and no explosions have been detected from the Adak Island infrasound array; the last explosion detected by infrasound was October 31.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO is lowering the Aviation Color Code and Alert Level to Yellow\/Advisory for Semisopochnoi due to the lack of evidence for ongoing eruptive activity. Seismic unrest may be continuing undetected. Pauses in eruptions lasting weeks to months are known to occur during volcanic eruptions. A return to eruptive activity may occur with little or no warning. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo cloud observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo cloud observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe seismic monitoring network for Semisopochnoi has been offline since November 1, but if atmospheric conditions permit an infrasound array on Adak Island may detect explosion signals from Semisopochnoi with a 13 minute delay. Semisopochnoi is also monitored remotely with satellite observations and lightning sensors.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Satellite observations suggest no recent volcanic activity","sentUtc":"2018-11-21","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2018-11-20T14:45:46-09:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-11-20T14:45:46-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-11-20T14:45:46-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20181121\/1915Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVeniaminof  (VNUM #312070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 56 deg 11 min W 159 deg 23 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8225 ft (2507 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EOvernight, ash emissions from Veniaminof increased significantly, generating a plume up to 15,000 ft asl and extending for more than 150 miles to the SE. This morning observers in Perryville and webcam views indicated continuous ash emissions. This activity is a significant increase from the past month and AVO is raising the Aviation Color Code to Red and the Volcano Alert Level to Warning. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nA SIGMET warning for aviation has been issued by the National Weather Service. Please reference https:\/\/www.weather.gov\/aawu\/sigmets for updated guidance on airborne ash hazards.\u003Cbr \/\u003E\r\n \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUp to ~15,000 ft\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EContinuous ash emissions observed in webcam\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAsh fall is possible in nearby communities. The National Weather Service Anchorage Forecast Office will issue an advisory if this is expected to occur. \u003Cbr \/\u003E\r\nhttps:\/\/www.weather.gov\/afc\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Increased continuous ash emissions to 15,000 ft and extending over 150 miles to the SE","sentUtc":"2018-11-21","obs":"avo","vName":"Veniaminof","vnum":"312070","noticeId":"DOI-USGS-AVO-2018-11-21T09:58:43-09:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-11-21T09:58:43-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-11-21T09:58:43-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20181026\/0535Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EStrong seismic tremor from Semisopochnoi consistent with an eruption began at 4:47 UTC (20:47 AKDT) and is currently diminishing. Satellite data through 5:00 UTC  (21:00 AKDT) show a small ash cloud at about 12,000 ft asl. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO is raising the Aviation Color Code and Alert Level to Orange\/Watch for Semisopochnoi.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Eabout 12,000 ft asl\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Ewinds toward the southeast\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi is monitored with an on-island seismic network, and remotely by satellite and lightning sensors. An infrasound array on Adak Island could detect explosive emissions from Semisopochnoi with a 13 minute delay if atmospheric conditions permit.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosive eruption detected. Volcanic cloud visible in satellite at 12,000 ft asl.","sentUtc":"2018-10-26","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2018-10-25T21:09:48-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-10-25T21:09:48-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-10-25T21:09:48-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20181012\/1945Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ERecent satellite observations and a lack of seismic tremor over the past week indicate eruptive activity at Semisopochnoi has paused. Thus we are lowering the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY. Although seismic tremor is currently absent at Semisopochnoi, discrete earthquake activity remains above background levels. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPauses in eruptive activity lasting for weeks to months are known to occur during volcanic eruptions. A return to eruptive activity remains a possibility at Semisopochnoi that could occur with little or no warning. AVO will continue to monitor the volcano closely.  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi is monitored with an on-island seismic network, and remotely by satellite and lightning sensors. An infrasound array on Adak Island could detect explosive emissions from Semisopochnoi with a 13 minute delay if atmospheric conditions permit.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Satellite observations and lack of seismic tremor indicate eruption has paused.","sentUtc":"2018-10-12","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2018-10-12T09:46:10-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-10-12T09:46:10-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-10-12T09:46:10-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20181005\/1847Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EKilauea  (VNUM #332010)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tHawaiian Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tHawaii\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E4091 ft (1247 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EIt has been 30 days since lava has been active at the surface of K\u012blauea Volcano. HVO monitoring shows low rates of seismicity, steady, relatively low rates of deformation across the volcano, and only minor gas emission at the summit and East Rift Zone (ERZ).  These observations indicate that resumption of eruption or summit collapse is unlikely in the near-term. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAccordingly, HVO is lowering the Volcano Alert Level for ground based hazards from WATCH to ADVISORY. This means volcanic activity has decreased significantly but continues to be closely monitored for renewed activity. The Aviation Color Code is also being lowered from ORANGE to YELLOW.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHazards are still present in the lower East Rift Zone (LERZ) eruption area and at the K\u012blauea summit. Residents and visitors near recently active fissures and lava flows should stay informed, heed Hawaii County Civil Defense warnings, and be prepared, if necessary, to self-evacuate in the unlikely event of renewed activity. Please note that Hawaii County maintains a closure of the entire flow field and the vents and prohibits access to the area unless authorized through Civil Defense.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nResidents are also advised of continuing hazardous conditions described below.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFor definitions of USGS Volcano Alert Levels and Aviation Color Codes, see: https:\/\/volcanoes.usgs.gov\/vhp\/about_alerts.html\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Eonly minor fume from active areas\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enone at this time\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003E Background and Prognosis \u003C\/b\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nK\u012blauea Volcano has maintained a low level of activity over the past two months. The last summit collapse was on August 2, 2018. High rates of seismicity and deflationary deformation at the summit stopped abruptly on August 4, coincident with cessation of major eruptive activity in the LERZ. Lava ceased flowing in the upper portion of the fissure 8 channel system by August 6, and ocean entries were inactive in late August.  Active lava was last seen inside the fissure 8 cone on September 5. The total sulfur dioxide (SO2) emission rate from the summit, Pu\u02bbu \u02bb\u014c\u02bb\u014d, and LERZ fissure vents combined is currently less than 300 tonnes per day. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSeismicity remains low across the volcano. Ground deformation continues, but at rates well below those during the period of major eruptive activity this summer. An exception is within the middle East Rift Zone where data show evidence of reinflation between Pu\u02bbu \u02bb\u014c\u02bb\u014d and Highway 130. One interpretation of this signal is that the rift zone is refilling with magma following withdrawal during the 2018 eruption.  An increase in this refilling rate or other change could result in new eruptive vents along any portion of the East Rift Zone.   \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWhile it is impossible to say with certainty what K\u012blauea will do next, current monitoring data do not suggest a return to eruptive activity or summit collapse in the near term.  HVO continues to closely monitor incoming geologic, seismic, deformation, and gas data for evidence of significant magma shallowing or pressurization that could mean the system was building toward renewed activity. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThis change in activity marks the first time since 1986 that lava has not been active at K\u012blauea\u2019s surface for a period of 30 or more days (The last long pause was 48.5 days between episodes 39 and 40 of the Pu\u02bbu \u02bb\u014c\u02bb\u014d eruption.)  In the past 200 years, the volcano has experienced periods of quiet ranging from months to years with no eruptive activity.  However, K\u012blauea is one of the most active volcanoes in the world, and additional eruptions will occur. Residents should remain informed of the volcano\u2019s status and learn about long-term hazards. For more information please see the HVO web site: https:\/\/volcanoes.usgs.gov\/volcanoes\/kilauea\/geo_hist_summary.html\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cb\u003EContinuing Hazards\u003C\/b\u003E\u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\nDespite the diminished activity on K\u012blauea, hazardous conditions remain in the ERZ and at the summit of the volcano.  \u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\nThe LERZ and Pu\u02bbu \u02bb\u014c\u02bb\u014d lava flow fields include large areas of still-hot, rugged, extremely sharp, and unstable lava surfaces that are subject to collapse.\u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\nSO2 gas emissions have greatly decreased from LERZ vents to a level below instrumental detection. However, local concentrations of SO2 or H2S may persist and are still reported in downwind areas,and residents may from time to time notice odors of these gasses. Hot cracks degassing at low levels are especially common just west of Highway 130 and HVO will continue to monitor these cracks for changes. \u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\nAround fissure 8, thick accumulations of tephra (fragmental volcanic debris) hide underground hazards such as holes and cracks; winds can pick up glassy and lightweight fragments including Pele\u2019s hair and carry them downwind. Tephra can irritate eyes, skin, and respiratory systems, so prolonged exposure should be avoided.\u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\nNew lava fields at the coast appear relatively stable based on a helicopter overflight on 4 October, however no intensive ground survey of the new coastline has been done.  Explosions near the coastline may still occur if sudden collapses expose the hot interiors of new lava flows to cold ocean water. HVO has received no reports that such collapses and\/or explosions have occurred, but mariners should operate with caution around the new coastline and contact the U.S. Coast Guard with any questions.  \u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\nAt the K\u012blauea summit, rockfalls and ground cracking can still occur with no warning. Steep crater walls destabilized by months of earthquakes will be prone to collapse for weeks or months to come, even without further ground shaking.\u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\nAs the summit continues to adjust to recent changes, additional, and potentially damaging, earthquakes are possible.  Additional aftershocks from the May 4, 2018, magnitude-6.9 earthquake are expected. Hawai\u2019i is prone to earthquakes, so everyone should be prepared for damaging ground shaking at any time.\u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\nAt the summit, if significant draining of the magma reservoir resumes, more collapse events could occur. Alternatively, resupply of magma to the summit reservoir could lead to explosions or the reappearance of lava in the caldera.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EaskHVO@usgs.gov\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe Hawaiian Volcano Observatory (HVO) continues to closely monitor K\u012blauea's seismicity, deformation, and gas emissions for any sign of reactivation. As of today, HVO will discontinue daily K\u012blauea updates and will issue weekly updates on Tuesdays until further notice. If volcano activity increases, we will elevate the Alert Level for K\u012blauea.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No active lava. Low levels of activity across the volcano. Eruption likelihood reduced.","sentUtc":"2018-10-05","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2018-10-04T19:15:27-07:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2018-10-04T19:15:27-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2018-10-04T19:15:27-07:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20180917\/2133Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EElevated seismicity that started yesterday has intensified over the past couple of hours, and a strong tremor signal at 20:49 UTC (12:49 AKDT) suggests that ash emissions may be occurring or are imminent at Semisopochnoi. Thus we are raising the Aviation Color Code to ORANGE and the Volcano Alert Level to WATCH. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nNothing has been detected in satellite, lightning, or infrasound data. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi is monitored with an on-island seismic network, and remotely by satellite and lightning sensors. An infrasound array on Adak Island could detect explosive emissions from Semisopochnoi with a 13 minute delay if atmospheric conditions permit.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Strong seismicity suggests ash emissions may be occurring or are imminent.","sentUtc":"2018-09-17","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2018-09-17T13:07:33-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-09-17T13:07:33-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-09-17T13:07:33-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20180916\/1756Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            UNASSIGNED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn increase in seismicity beginning 16:31 UTC (08:31 AKDT) on has prompted AVO to raise the Aviation Color Code and Volcano Alert Level to YELLOW\/ADVISORY.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThere is no clear indication from satellite imagery or regional infrasound data that Semisopochnoi is erupting at this time. AVO will continue to monitor Semisopochnoi seismic data and evaluate satellite images.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ncwaythomas@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Increased seismicity over the past 2 hours. No signs of eruptive activity.","sentUtc":"2018-09-16","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2018-09-16T09:28:12-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-09-16T09:28:12-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-09-16T09:28:12-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20180904\/2109Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVeniaminof  (VNUM #312070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 56 deg 11 min W 159 deg 23 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8225 ft (2507 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismic activity remains elevated at Veniaminof.   Low-level ash emissions have been observed in web camera images and have been confirmed by observers in Perryville.  Thus, AVO is raising the Aviation Color Code to Orange and the Volcano Alert Level to Watch. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8000-10,000ft\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ELow-level ash emissions.  \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMount Veniaminof volcano is an andesitic stratovolcano with an ice-filled 10-km diameter summit caldera located on the Alaska Peninsula, 775 km (480 mi) southwest of Anchorage and 35 km (22 mi) north of Perryville. Veniaminof is one of the largest (~300 cubic km; 77 cubic mi) and most active volcanic centers in the Aleutian Arc and has erupted at least 13 times in the past 200 years. Recent significant eruptions of the volcano occurred in 1993-95, 2005, and 2013. These were Strombolian eruptions that produced lava fountains and minor emissions of ash and gas from the main intracaldera cone. During the 1993-95 activity, a small lava flow was extruded, and in 2013, five small lava flows effused from the intracaldera cone over about five months. Minor ash-producing explosions occurred nearly annually between 2002 and 2010. Previous historical eruptions have produced ash plumes that reached 20,000 ft above sea level (1939 and 1956) and ash fallout that blanketed areas within about 40 km (25 mi) of the volcano (1939).\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Seismic activity remains elevated.  Low level ash emissions observed in web camera.","sentUtc":"2018-09-04","obs":"avo","vName":"Veniaminof","vnum":"312070","noticeId":"DOI-USGS-AVO-2018-09-04T12:42:09-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-09-04T12:42:09-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-09-04T12:42:09-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20180903\/1929Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVeniaminof  (VNUM #312070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 56 deg 11 min W 159 deg 23 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8225 ft (2507 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismic activity at Veniaminof, indicative of unrest, increased late last night and volcanic tremor is ongoing. Thus, AVO is rasing the Aviation Color Code to Yellow and the Volcano Alert Level to Advisory. There are, however, no signs of eruptive activity at this time. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMount Veniaminof volcano is an andesitic stratovolcano with an ice-filled 10-km diameter summit caldera located on the Alaska Peninsula, 775 km (480 mi) southwest of Anchorage and 35 km (22 mi) north of Perryville. Veniaminof is one of the largest (~300 cubic km; 77 cubic mi) and most active volcanic centers in the Aleutian Arc and has erupted at least 13 times in the past 200 years. Recent significant eruptions of the volcano occurred in 1993-95, 2005, and 2013. These were Strombolian eruptions that produced lava fountains and minor emissions of ash and gas from the main intracaldera cone. During the 1993-95 activity, a small lava flow was extruded, and in 2013, five small lava flows effused from the intracaldera cone over about five months. Minor ash-producing explosions occurred nearly annually between 2002 and 2010. Previous historical eruptions have produced ash plumes that reached 20,000 ft above sea level (1939 and 1956) and ash fallout that blanketed areas within about 40 km (25 mi) of the volcano (1939).\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Increased seismicity over the past day and ongoing. No signs of eruptive activity.","sentUtc":"2018-09-03","obs":"avo","vName":"Veniaminof","vnum":"312070","noticeId":"DOI-USGS-AVO-2018-09-03T11:08:18-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-09-03T11:08:18-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-09-03T11:08:18-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20180822\/1945Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe Aviation Color Code is being reduced to Yellow and the Volcano Alert Level to Advisory at Cleveland volcano. Minor explosive activity was last observed in late July and since that time there has been no evidence of lava extrusion in the summit crater. Elevated surface temperatures in the summit crater continue to be observed during periods of clear weather, but are interpreted to be due to hot degassing. This is typical of Cleveland volcano and indicates that low-level unrest continues.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nOccasional, short duration explosive activity with minimal to no precursory signals  is common at Cleveland volcano, and explosions may occur without warning. Explosions typically produce relatively small volcanic ash clouds that dissipate within hours; however, more significant ash emissions may occur as they have in the past. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCleveland volcano is monitored by only two seismic stations, which restricts AVO's ability to detect precursory unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Reduction in alert level.","sentUtc":"2018-08-22","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2018-08-22T11:18:24-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-08-22T11:18:24-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-08-22T11:18:24-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20180701\/1837Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin  (VNUM #311120)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 4 min W 176 deg 6 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5709 ft (1740 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EEarthquake activity at Great Sitkin Volcano has increased above background levels over the past day. Numerous small, shallow earthquakes are occurring beneath the summit at rates as high as 10-20 per hour. It is uncertain if this unrest will lead to any eruptive activity but this remains a possibility given the general degree of unrest at Great Sitkin over the past several months. Thus AVO is raising the Aviation Color Code and Alert Level to YELLOW \/ADVISORY. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO detected a brief steam and ash explosion at Great Sitkin on June 10, and earthquake activity then declined to background levels over a period of about 2 weeks. Over the past several days, nothing significant has been observed in satellite data and no other signs of unrest have been detected or reported to AVO. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nGreat Sitkin Volcano is monitored by a five-station seismic network on Great Sitkin Island and with additional seismic stations on the nearby islands of Igitkin, Adak, Kagalaska, and Kanaga. A six-element infrasound array to detect explosions (atmospheric pressure waves) was installed on Adak Island in June, 2017, although it is currently (June 2018) only partly operational. AVO also uses satellite imagery to monitor Great Sitkin Volcano.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin Volcano is a basaltic andesite volcano that occupies most of the northern half of Great Sitkin Island, a member of the Andreanof Islands group in the central Aleutian Islands. It is located 43 km (26 miles) east of the community of Adak. Great Sitkin erupted at least three times in the 20th century, most recently in 1974. That eruption produced at least one ash cloud that likely exceeded an altitude of 25,000 ft above sea level. A poorly documented eruption occurred in 1945, also producing a lava dome that was partially destroyed in the 1974 eruption. A seismic swarm occurred from July 2016 through the end of 2017. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Seismicity has increased above background levels.","sentUtc":"2018-07-01","obs":"avo","vName":"Great Sitkin","vnum":"311120","noticeId":"DOI-USGS-AVO-2018-07-01T09:42:20-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-07-01T09:42:20-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-07-01T09:42:20-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20180627\/1849Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin  (VNUM #311120)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 4 min W 176 deg 6 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5709 ft (1740 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EEarthquake activity at Great Sitkin Volcano has declined gradually and no further indications of increasing unrest have been observed since AVO detected a brief steam and ash explosion on June 10. For the time being, the volcano has returned to normal background levels of activity and AVO is thus lowering the Aviation Color Code and Alert Level to GREEN\/NORMAL.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nGreat Sitkin Volcano is monitored by a five-station seismic network on Great Sitkin Island and with additional seismic stations on the nearby islands of Igitkin, Adak, Kagalaska, and Kanaga. A six-element infrasound array to detect explosions (atmospheric pressure waves) was installed on Adak Island in June, 2017, although it is currently (June 2018) only partly operational. AVO also uses satellite imagery to monitor Great Sitkin Volcano.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin Volcano is a basaltic andesite volcano that occupies most of the northern half of Great Sitkin Island, a member of the Andreanof Islands group in the central Aleutian Islands. It is located 43 km (26 miles) east of the community of Adak. Great Sitkin erupted at least three times in the 20th century, most recently in 1974. That eruption produced at least one ash cloud that likely exceeded an altitude of 25,000 ft above sea level. A poorly documented eruption occurred in 1945, also producing a lava dome that was partially destroyed in the 1974 eruption. A seismic swarm occurred from July 2016 through the end of 2017. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Volcano has returned to background levels of activity","sentUtc":"2018-06-27","obs":"avo","vName":"Great Sitkin","vnum":"311120","noticeId":"DOI-USGS-AVO-2018-06-27T10:08:06-08:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-06-27T10:08:06-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-06-27T10:08:06-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20180626\/2107Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESatellite observations of Cleveland Volcano on June 25, 2018 indicate the presence of a small circular lava flow, about 80 meters in diameter, covering the floor of the summit crater.  Geophysical monitoring data from Cleveland Volcano has been unavailable since early yesterday afternoon and thus it is unknown if the effusion of lava within the crater generated detectable seismicity or infrasound. However, the presence of a lava flow over the active vent increases the possibility of a vent clearing explosion over the coming days to weeks and thus AVO is raising the Aviation Color Code and Volcano Alert Level to ORANGE\/WATCH. The last detected explosive activity at Cleveland volcano occurred May 5, 2018 UTC (May 4 local time). \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nOccasional, short duration explosive activity with minimal to no precursory signals  is common at Cleveland Volcano, and explosions may occur without warning. Explosions typically produce relatively small volcanic ash clouds that dissipate within hours; however, more significant ash emissions may occur as they have in the past. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCleveland volcano is monitored by only two seismic stations, which restricts AVO's ability to detect precursory unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Satellite data indicates small lava flow in summit crater.","sentUtc":"2018-06-26","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2018-06-26T11:51:34-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-06-26T11:51:34-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-06-26T11:51:34-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20180625\/0635Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EKilauea  (VNUM #332010)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tHawaiian Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tHawaii\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E4091 ft (1247 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EK\u012blauea Volcano Summit\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nEpisodic collapse of K\u012blauea Volcano\u2019s caldera floor continues, at times accompanied by bursts of small amounts of volcanic ash. The most recent of these occurred today at 4:12 pm.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSince late May, these collapse\/explosion events have rarely produced significant ash plumes rising more than 10,000 feet above sea level where they can pose a significant hazard to aviation.  For this reason, HVO is reducing the aviation color code from RED to ORANGE.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCollapse\/explosion events that may produce ash plumes are expected to continue as long as subsidence is occurring at the volcano\u2019s summit. At any time, activity could intensify producing more ash and higher ash plumes. During these events, ash may be transported downwind to impact communities. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFor forecasts of where ash would fall under forecast wind conditions, please consult the Ash3D model output here: https:\/\/volcanoes.usgs.gov\/observatories\/hvo\/ash_information.html\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nInformation on volcanic ash hazards and how to prepare for ash fall maybe found at http:\/\/www.ivhhn.org\/information#ash (health impacts) OR https:\/\/volcanoes.usgs.gov\/volcanic_ash\/ (other impacts). \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSulfur dioxide emissions from the volcano's summit have dropped to levels below those measured during the high stand of the summit lava lake.  Air quality in the summit area is, however, impacted by emissions from the Lower East Rift Zone.  Information on sulfur dioxide and vog impacts and how to protect yourself from vog may be found here:  https:\/\/vog.ivhhn.org\/\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nK\u012blauea Volcano Lower East Rift Zone\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nEruption of lava and gas from the lower East Rift Zone (LERZ) continues into its seventh week.  The eruption remains hazardous and therefore HVO is maintaining alert level WARNING.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe fissure 8 cone continues to feed a lava flow reaching the ocean at the Kapoho area coastline. Short-lived overflows of lava from an established channel occur periodically but generally do not travel beyond the existing flow field. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPele's hair and other lightweight volcanic glass fragments from the lava fountain at fissure 8 continue to fall downwind of the fissure, dusting the ground within a few hundred meters (yards) of the vent. High winds may waft lighter particles to greater distances. Residents are urged to minimize exposure to these volcanic particles, which can cause skin and eye irritation similar to volcanic ash.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe most recent map of lava flows can be found at https:\/\/volcanoes.usgs.gov\/volcanoes\/kilauea\/multimedia_maps.html\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nVolcanic gas emissions remain very high in the Lower East Rift Zone. Shifting wind conditions can bring VOG to nearly all of the Island of Hawaii. VOG information can be found at https:\/\/vog.ivhhn.org\/\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe ocean entry is a hazardous area. Interaction between lava and ocean water can produce sudden explosions of dangerous debris and steam. The growing lava delta is unstable and can slide into the sea without warning. Additionally, the interaction of lava with the ocean creates a towering plume of \u0022laze\u0022, a corrosive seawater plume laden with hydrochloric acid and fine volcanic particles that can irritate the skin, eyes, and lungs.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAdditional ground cracking and outbreaks of lava in the area of the active fissures are possible. Residents downslope of the region of fissure vents should remain informed and heed all Hawaii County Civil Defense messages and warnings.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo cloud at this time. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EaskHVO@usgs.gov\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAdditional notices will be issued should activity change significantly.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Collapse\/explosions continue at summit, minor ash. Lava eruption continues in rift zone.","sentUtc":"2018-06-25","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2018-06-20T11:30:06-07:00","colorCode":"ORANGE","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2018-06-20T11:30:06-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2018-06-20T11:30:06-07:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20180621\/2346Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMauna Loa  (VNUM #332020)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tHawaiian Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 19 deg 28 min W 155 deg 36 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tHawaii\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E13681 ft (4170 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EHVO seismic and deformation monitoring networks have been recording near background levels of seismicity and ground motion at Mauna Loa Volcano for at least the last six months. These observations indicate that the volcano is no longer at an elevated level of activity. Accordingly, HVO is dropping the Mauna Loa alert level to NORMAL and the aviation color code to GREEN. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHVO continues to monitor the volcano closely and will report any significant changes.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nStay informed about Mauna Loa by following volcano updates and tracking current monitoring data on the HVO web page (http:\/\/hvo.wr.usgs.gov\/activity\/maunaloastatus.php) or by signing up to receive updates by email at this site: http:\/\/volcanoes.usgs.gov\/vns\/\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EFrom 2014 through much of 2017, HVO seismic stations recorded variable, but overall elevated rates of shallow, small-magnitude earthquakes beneath Mauna Loa's summit, upper Southwest Rift Zone, and west flank. During that same time period, HVO measured ground deformation consistent with input of magma into  the volcano's shallow magma storage system.\u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\nThese observations indicated that volcano was not at background levels of activity and the volcano alert level was raised to ADVISORY and the aviation color code to YELLOW in September 2015. It was noted at the time that the increase in alert level did not mean that an eruption was imminent or that progression to an eruption was certain. Indeed, this episode of unrest lasted several years without progressing to an eruption, similar to the period of unrest from 2004 to 2009. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSince late 2017, rates of earthquake occurrence and of ground motion related to inflation of shallow magma reservoirs have slowed to near background levels. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSeismicity has continued to be low during the current activity on K\u012blauea volcano. Recent motions recorded by GPS instruments on Mauna Loa are due to the M6.9 K\u012blauea south flank earthquake on May 4, 2018 and subsidence at the summit K\u012blauea Volcano. None of the activity on K\u012blauea volcano has had a detectable effect on Mauna Loa\u2019s magmatic system.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cb\u003EBackground:\u003C\/b\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nMauna Loa is the largest active volcano on Earth. Eruptions typically start at the summit and, within minutes to months of eruption onset, about half of the eruptions migrate into either the Northeast or Southwest Rift Zones. Since 1843, the volcano has erupted 33 times with intervals between eruptions ranging from months to decades.  Mauna Loa last erupted 34 years ago, in 1984. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nMauna Loa eruptions tend to produce voluminous, fast-moving lava flows that can impact communities on the east and west sides of the Island of Hawai`i. Since the mid-19th century, the city of Hilo in east Hawai'i has been threatened by seven Mauna Loa lava flows. Mauna Loa lava flows have reached the south and west coasts of the island eight times: 1859, 1868, 1887, 1926, 1919, and three times in 1950. \u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EaskHVO@usgs.gov\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EWith the downgrade to NORMAL\/GREEN, HVO will suspend weekly updates on Mauna Loa.  Instead, updates will be issued monthly.  Should volcanic activity change significantly a new VAN will be issued. Regularly scheduled updates are posted at http:\/\/hvo.wr.usgs.gov \u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"HVO instruments recorded near background seismicity, deformation for past 6 months","sentUtc":"2018-06-21","obs":"hvo","vName":"Mauna Loa","vnum":"332020","noticeId":"DOI-USGS-HVO-2018-06-21T14:39:22-07:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2018-06-21T14:39:22-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2018-06-21T14:39:22-07:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20180610\/2126Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin  (VNUM #311120)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 4 min W 176 deg 6 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5709 ft (1740 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EEarthquake activity at Great Sitkin Volcano has been elevated over the past five days, and earlier today at 11:39 AKDT (19:39 UTC), a signal that may represent a short-lived steam explosion was detected by seismic data. AVO is thus raising the Aviation Color Code and Alert Level to YELLOW\/ADVISORY.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nGreat Sitkin Volcano is monitored by a five-station seismic network on Great Sitkin Island and with additional seismic stations on the nearby islands of Igitkin, Adak, Kagalaska, and Kanaga. A six-element infrasound array to detect explosions (atmospheric pressure waves) was installed on Adak Island in June, 2017, although it is currently (June 2018) only partly operational. AVO also uses satellite imagery to monitor Great Sitkin Volcano.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin Volcano is a basaltic andesite volcano that occupies most of the northern half of Great Sitkin Island, a member of the Andreanof Islands group in the central Aleutian Islands. It is located 43 km (26 miles) east of the community of Adak. Great Sitkin erupted at least three times in the 20th century, most recently in 1974. That eruption produced at least one ash cloud that likely exceeded an altitude of 25,000 ft above sea level. A poorly documented eruption occurred in 1945, also producing a lava dome that was partially destroyed in the 1974 eruption. A seismic swarm occurred from July 2016 through the end of 2017. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Elevated earthquake activity and possible small steam explosion","sentUtc":"2018-06-10","obs":"avo","vName":"Great Sitkin","vnum":"311120","noticeId":"DOI-USGS-AVO-2018-06-10T12:49:35-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-06-10T12:49:35-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-06-10T12:49:35-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20180517\/1633Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EKilauea  (VNUM #332010)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tHawaiian Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tHawaii\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E4091 ft (1247 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAt about 0415 this morning, an explosion from the Overlook vent within Halemaumau crater at Kilauea Volcano's summit produced a volcanic cloud that reaches as high as 30,000 ft asl and drifted northeast. Continued emissions from the crater are reaching as high as 12,000 ft asl. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAt any time, activity may again become more explosive, increasing the intensity of ash production and producing ballistic projectiles near the vent. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nResource on volcanic ash hazards: https:\/\/volcanoes.usgs.gov\/volcanic_ash\/\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nResource on vog: https:\/\/vog.ivhhn.org\/\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCurrent NWS information on ashfall: http:\/\/www.prh.noaa.gov\/hnl\/watchwarn\/\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Eup to 30,000 ft asl\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EDrifting generally northeast\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPhotos of this activity may be found here:\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nhttps:\/\/volcanoes.usgs.gov\/volcanoes\/kilauea\/kilauea_multimedia_15.html\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EaskHVO@usgs.gov\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAdditional notices will be issued should activity change significantly.  \u003Cbr \/\u003E\r\nConsult the National Weather Service for specific Ashfall notifications:http:\/\/www.prh.noaa.gov\/hnl\/\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosion at summit at 0415. Cloud to 30,000 ft asl; lower level emissions continue.","sentUtc":"2018-05-17","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2018-05-17T08:22:34-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2018-05-17T08:22:34-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2018-05-17T08:22:34-08:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20180515\/2323Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EKilauea  (VNUM #332010)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tHawaiian Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 19 deg 25 min W 155 deg 17 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tHawaii\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E4091 ft (1247 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003E As of early this morning, eruption of ash from the Overlook vent within Halemaumau crater at Kilauea Volcano's summit has generally increased in intensity. Ash has been rising nearly continuously from the vent and drifting downwind to the southwest. Ashfall and vog (volcanic air pollution) has been reported in Pahala, about 18 miles downwind. NWS radar and pilot reports indicate the top of the ash cloud is as high as 10,000 to 12,000 feet above sea level, but this may be expected to vary depending on the vigor of activity and wind conditions. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAsh emission from the Kilauea summit vent will likely be variable with periods of increased and decreased intensity depending on the occurrence of rockfalls into the vent and other changes within the vent. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAt any time, activity may become more explosive, increasing the intensity of ash production and producing ballistic projectiles near the vent. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nResource on volcanic ash hazards: https:\/\/volcanoes.usgs.gov\/volcanic_ash\/\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nResource on vog: https:\/\/vog.ivhhn.org\/\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10,000 - 12,000 feet \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EDrifting generally southwest with tradewinds.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPhotos of this activity may be found here:\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nhttps:\/\/volcanoes.usgs.gov\/volcanoes\/kilauea\/kilauea_multimedia_15.html\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EaskHVO@usgs.gov\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAdditional notices will be issued should activity change significantly.  \u003Cbr \/\u003E\r\nConsult the National Weather Service for specific Ashfall notifications:http:\/\/www.prh.noaa.gov\/hnl\/\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Increased ash emission from Kilauea Volcano summit; ash cloud and ashfall downwind","sentUtc":"2018-05-15","obs":"hvo","vName":"Kilauea","vnum":"332010","noticeId":"DOI-USGS-HVO-2018-05-15T16:11:24-07:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-HVO-2018-05-15T16:11:24-07:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-HVO-2018-05-15T16:11:24-07:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20180506\/2016Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe last detected explosive activity at Cleveland volcano occurred May 5, 2018 UTC (May 4 local time). We have no evidence of significant eruptive activity since that time. Thus, AVO is lowering the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFuture explosive activity is likely, and explosions usually occur without warning. Explosions from Cleveland typically produce relatively small volcanic ash clouds that dissipate within hours; however, more significant ash emissions are possible. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCleveland volcano is monitored by only two seismic stations, which restricts AVO's ability to detect precursory unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No activity detected in geophysical or satellite data since May 5 explosion.","sentUtc":"2018-05-06","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2018-05-06T11:55:07-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-05-06T11:55:07-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-05-06T11:55:07-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20180505\/0712Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESatellite data show that the recent explosion of Cleveland volcano at 05:49 UTC (21:49 local time) produced a small ash cloud up to 22,000 ft asl moving southeast. No other significant activity has been detected.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nExplosions from Cleveland typically produce relatively small volcanic ash clouds that dissipate within hours; however, more significant ash emissions are possible. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCleveland volcano is monitored with a limited real-time seismic network, which inhibits AVO's ability to detect precursory unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E22,000 ft asl\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAsh seen in satellite imagery. Cloud drifting southeast\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Small ash cloud from recent explosion at 22,000 ft asl drifting southeast","sentUtc":"2018-05-05","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2018-05-04T23:02:17-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-05-04T23:02:17-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-05-04T23:02:17-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20180505\/0620Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ELocal seismic and infrasound sensors recorded a small explosion tonight at 05:49 UTC (21:49 local time). A few small earthquakes were also recorded at the volcano during the previous several days. No other significant activity was detected. No volcanic cloud has been detected in satellite imagery.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nExplosions from Cleveland typically produce relatively small volcanic ash clouds that dissipate within hours; however, more significant ash emissions are possible. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCleveland volcano is monitored with a limited real-time seismic network, which inhibits AVO's ability to detect precursory unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"New explosion detected.  Raising the alert level to ORANGE\/WATCH.","sentUtc":"2018-05-05","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2018-05-04T22:08:38-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-05-04T22:08:38-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-05-04T22:08:38-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20180406\/1831Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe last detected explosive activity at Cleveland volcano occurred April 4, 2018. We have no evidence of significant eruptive activity since that time. Thus, AVO is lowering the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFuture explosive activity is likely, and would likely occur without warning. Explosions from Cleveland typically produce relatively small volcanic ash clouds that dissipate within hours; however, more significant ash emissions are possible. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCleveland volcano is monitored by only two seismic stations, which restricts AVO's ability to detect precursory unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS, mcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No activity detected in geophysical or satellite data since April 4 explosion.","sentUtc":"2018-04-06","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2018-04-06T09:16:57-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-04-06T09:16:57-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-04-06T09:16:57-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20180404\/1235Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ELocal seismic and infrasound sensors recorded a small explosion today at 11:55 UTC (03:55 AKST). We are raising the Aviation Color Code to ORANGE  and the Alert Level to WATCH.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nExplosions from Cleveland typically produce relatively small volcanic ash clouds that dissipate within hours. No ash cloud from this event has been seen in satellite images, which currently are partly obscured by weather clouds.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCleveland volcano is monitored with a limited real-time seismic network, which inhibits AVO's ability to detect precursory unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS, mcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI, jfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"New explosion detected.  Raising the alert level to ORANGE\/WATCH.","sentUtc":"2018-04-04","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2018-04-04T04:26:29-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-04-04T04:26:29-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-04-04T04:26:29-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20180404\/1223Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ELocal seismic and infrasound sensors recorded a small explosion today at 11:55 UTC (03:55 AKST). A few small earthquakes were also recorded at the volcano during the last 24 hours. No other significant activity was detected.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nExplosions from Cleveland typically produce relatively small volcanic ash clouds that dissipate within hours; however, more significant ash emissions are possible. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCleveland volcano is monitored with a limited real-time seismic network, which inhibits AVO's ability to detect precursory unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS, mcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI, jfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"New explosion detected.  Raising the alert level to ORANGE\/WATCH.","sentUtc":"2018-04-04","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2018-04-04T04:19:35-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-04-04T04:19:35-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-04-04T04:19:35-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20180306\/2133Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ECleveland Volcano remains at Aviation Color Code YELLOW and Alert Level ADVISORY. The Volcanic Activity Notice sent out at 12:06 AKST today was in error. There have been no changes in activity at the volcano. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\npeizbekov@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Cleveland remains at YELLOW\/ADVISORY. VAN sent out at 12:06 AKST today was in error. ","sentUtc":"2018-03-06","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2018-03-06T12:27:29-09:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-03-06T12:27:29-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-03-06T12:27:29-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20180306\/2106Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2018\/A94\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ETEST The last detected explosive activity at Cleveland Volcano occurred March 2, 2018. There is no evidence of significant eruptive activity since that time, and a clear satellite view today showed no new lava effusion in the crater. Thus, AVO is lowering the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFuture explosive activity is likely, and would likely occur without warning. Explosions from Cleveland typically produce relatively small volcanic ash clouds that dissipate within hours; however, more significant ash emissions are possible. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCleveland volcano is monitored with a limited real-time seismic network, which inhibits AVO's ability to detect precursory unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\npeizbekov@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"TEST","sentUtc":"2018-03-06","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2018-03-06T13:05:18-08:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-03-06T13:05:18-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-03-06T13:05:18-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20180305\/2214Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe last detected explosive activity at Cleveland Volcano occurred March 2, 2018. There is no evidence of significant eruptive activity since that time, and a clear satellite view today showed no new lava effusion in the crater. Thus, AVO is lowering the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFuture explosive activity is likely, and would likely occur without warning. Explosions from Cleveland typically produce relatively small volcanic ash clouds that dissipate within hours; however, more significant ash emissions are possible. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCleveland volcano is monitored with a limited real-time seismic network, which inhibits AVO's ability to detect precursory unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\npeizbekov@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No significant eruptive activity detected.  Lowering alert level to YELLOW\/ADVISORY.","sentUtc":"2018-03-05","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2018-03-05T12:25:48-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-03-05T12:25:48-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-03-05T12:25:48-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20180302\/1538Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ELocal seismic and infrasound sensors recorded a small explosion today at 14:57 UTC (05:57 AKST). No other significant activity was detected.  A volcanic cloud was observed heading ENE at an altitude of about 15,000 ft.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nExplosions from Cleveland typically produce relatively small volcanic ash clouds that dissipate within hours; however, more significant ash emissions are possible. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCleveland volcano is monitored with a limited real-time seismic network, which inhibits AVO's ability to detect precursory unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"New explosion detected.  Raising the alert level to ORANGE\/WATCH.","sentUtc":"2018-03-02","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2018-03-02T06:33:09-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-03-02T06:33:09-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-03-02T06:33:09-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20180209\/2244Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2018\/A92\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe last detected explosive activity at Cleveland Volcano was on December 18, 2017. There is no evidence of significant activity since that time. Thus, AVO is reducing the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY. Future explosive activity is likely, and would occur without warning. Previous explosions have produced hazardous conditions primarily near the summit crater, but occasionally they have been large enough to produce a drifting ash cloud. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCleveland Volcano is not monitored with a full real-time seismic network and this inhibits AVO's ability to detect unrest that may lead to future activity. We are able to detect explosive activity using infrasound and limited seismic instruments on the island.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\npeizbekov@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Reducing alert level to YELLOW\/ADVISORY. No explosive activity for 2 months.","sentUtc":"2018-02-09","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2018-02-09T11:30:26-09:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-02-09T11:30:26-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-02-09T11:30:26-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20180207\/2301Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin  (VNUM #311360)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2018\/A88\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E9373 ft (2857 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe Alaska Volcano Observatory is decreasing the Aviation Color Code to GREEN and the Alert Level to NORMAL at Shishaldin Volcano based on declining seismic and infrasound activity over the past month. These observations represent a return to normal background activity at Shishaldin.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nShishaldin is monitored by local seismic and infrasound sensors, satellite data, a web camera, a telemetered geodetic network, and distant infrasound networks. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 24 confirmed eruptions since 1775. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\npavel@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Shishaldin alert level decreased to GREEN\/NORMAL from YELLOW\/ADVISORY.","sentUtc":"2018-02-07","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2018-02-07T13:42:25-09:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-02-07T13:42:25-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-02-07T13:42:25-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20180118\/2236Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin  (VNUM #311120)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2018\/A55\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 4 min W 176 deg 6 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5709 ft (1740 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EEarthquake activity at Great Sitkin Volcano has declined over the past two months to near background levels. No significant activity has been observed in satellite data during this time period and no steam plumes have been reported. AVO is thus lowering the Aviation Color Code and Alert Level to GREEN\/NORMAL.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe number of earthquakes located at Great Sitkin increased as early as late July 2016, and the elevated seismicity continued throughout most of 2017. The unrest was likely the result of a magma intrusion beneath the volcano. The decline over the past two months in the number of earthquakes suggests the intrusion has stalled and the volcano is returning to a period of background seismicity. Future intrusions at Great Sitkin should also lead to an increase in earthquakes prior to any eruptive activity.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nGreat Sitkin Volcano is monitored by a five-station seismic network on Great Sitkin Island and with additional seismic stations on the nearby islands of Igitkin, Adak, Kagalaska, and Kanaga. A six-element infrasound array to detect explosions (atmospheric pressure waves) was installed on Adak Island in June, 2017. AVO also uses satellite imagery to monitor Great Sitkin Volcano.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin Volcano is a basaltic andesite volcano that occupies most of the northern half of Great Sitkin Island, a member of the Andreanof Islands group in the central Aleutian Islands. It is located 43 km (26 miles) east of the community of Adak. The volcano is a composite structure consisting of an older dissected volcano and a younger parasitic cone with a 3-km-diameter summit crater. A steep-sided lava dome, emplaced during an eruption in 1974, occupies the center of the crater. Great Sitkin erupted at least three times in the 20th century, most recently in 1974. That eruption produced at least one ash cloud that likely exceeded an altitude of 25,000 ft above sea level. A poorly documented eruption occurred in 1945, also producing a lava dome that was partially destroyed in the 1974 eruption. Within the past 280 years a large explosive eruption produced pyroclastic flows that partially filled the Glacier Creek valley on the southwest flank. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Declining seismicity over past 2 months suggests return to background","sentUtc":"2018-01-18","obs":"avo","vName":"Great Sitkin","vnum":"311120","noticeId":"DOI-USGS-AVO-2018-01-17T11:49:32-09:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2018-01-17T11:49:32-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2018-01-17T11:49:32-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20171216\/0049Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAnatahan  (VNUM #284200)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tU.S. Geological Survey\n\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/N38\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 16 deg 21 min E 145 deg 40 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tNorthern Mariana Islands\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2592 ft (790 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe USGS is moving the status of Anatahan volcano from Aviation Color Code GREEN to \u201cunassigned\u201d. The USGS is no longer receiving data streams from monitoring instruments on Anatahan or Sarigan.  Due to this lack of monitoring data, the USGS can no longer detect precursory activity that may be leading to an eruption at Anatahan nor quickly confirm or dismiss reports of activity at the volcano.  Thus the USGS cannot say with any certainty that the volcano is at normal or background levels of activity. A storm moving through the area in August of 2017 damaged a repeater site that telemetered data from these seismic, camera, and infrasound networks to the CNMI Homeland Security and Emergency Management (HSEM) offices in Saipan.  Repeated attempts to remotely repair the radio equipment have failed and the lack of helicopter support in the area makes it impossible to visit the site to affect repairs.   The detection of a large eruption at Anatahan is possible using a combination of data from a seismic and infrasound network on Saipan, monitoring for signs of volcanic lightning, and analysis of satellite data, however no forewarning of such an event is currently possible.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECONTACT INFORMATION:\u003Cbr \/\u003E\r\nCNMI Homeland Security and Emergency Management\u003Cbr \/\u003E\r\ncnmihsem.gov.mp\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nUSGS Northern Mariana Duty Scientist (808) 967-8815\u003Cbr \/\u003E\r\nvolcano.wr.usgs.gov\/cnmistatus.php\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSatellite information, Washington VAAC\u003Cbr \/\u003E\r\nwww.ssd.noaa.gov\/VAAC\/washington.html\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Status of Anatahan is being moved to unassigned due to a lack of monitoring data.  ","sentUtc":"2017-12-16","obs":"nmi","vName":"Anatahan","vnum":"284200","noticeId":"DOI-USGS-NMI-2017-12-15T10:33:55-09:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2017-12-15T10:33:55-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2017-12-15T10:33:55-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20171213\/1515Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn explosion was detected at Cleveland Volcano in seismic and infrasound data this morning 04:20 AKST (13:20 UTC).  The explosion produced an eruption cloud that was observed in satellite data to an altitude of up to 20,000 ft asl and moving to the east.  AVO is raising the color code for Cleveland to Aviation Color Code ORANGE and Alert Level WATCH.  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESmall cloud detected. NWS eruption SIGMET issued to 20,000 ft asl.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECloud moving to the east.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe National Weather Service Alaska Aviation Weather Unit has issued an eruption SIGMET warning for aviation up to 20,000 ft above sea level. This may be revised as new information becomes available. Please see the NWS AAWU at http:\/\/www.weather.gov\/aawu\/sigmets for updated information on aviation warning messages.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCleveland volcano is not monitored with a full real-time seismic network and this inhibits AVO's ability to detect unrest that may lead to future activity. We are able to detect explosive activity using infrasound and limited seismic instruments on the island.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF \u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"An explosion detected.  Eruption cloud up to 20,000 ft. observed in satellte data. ","sentUtc":"2017-12-13","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2017-12-13T04:35:07-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-12-13T04:35:07-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-12-13T04:35:07-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20171212\/2131Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ERecent satellite images of Cleveland Volcano show that lava effusion in the summit has likely ceased. Activity at Cleveland over the past several weeks has been characterized by small to very small explosions that have reduced the dome in the crater to rubble but have not produce detectable eruption clouds.  Due to the low level of current activity, AVO is lowering the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano is not monitored with a full real-time seismic network and this inhibits AVO's ability to detect unrest that may lead to future activity. We are able to detect explosive activity using infrasound and limited seismic instruments on the island.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF \u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Activity has declined.  Color code lowered to YELLOW.","sentUtc":"2017-12-12","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2017-12-12T09:52:03-09:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-12-12T09:52:03-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-12-12T09:52:03-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20171206\/2009Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe last detected explosive activity at Bogoslof occurred on August 30, 2017. Over the past three months there has been no significant activity observed in seismic, infrasound, satellite or lightning data. Thus, we are decreasing the Aviation Color Code and Alert Level to UNASSIGNED. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO only assigns Aviation Color Codes and Alert Levels to volcanoes that have a local seismic monitoring network. Activity at Bogoslof has been detected using instruments from distant sites, thus we can not say authoritatively that the volcano has returned to its normal background state. However, we are no longer detecting any activity that would be considered to be indicative of unrest. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nA resumption of eruptive activity is possible. It is likely that we would be able to detect significant explosive activity if it where to occur.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Bogoslof alert level decreased from YELLOW\/ADVISORY to UNASSIGNED?UNASSIGNED.","sentUtc":"2017-12-06","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-12-05T13:42:19-09:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-12-05T13:42:19-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-12-05T13:42:19-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20171206\/2006Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin  (VNUM #311360)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E9373 ft (2857 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe Alaska Volcano Observatory is raising the Aviation Color Code to YELLOW and the Alert Level to ADVISORY at Shishaldin Volcano based on increased seismic and infrasound activity over the past few weeks. These observations represent a departure from normal background activity at Shishaldin, but do not necessarily indicate that an eruption will occur. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nShishaldin is monitored by local seismic and infrasound sensors, satellite data, a web camera, a telemetered geodetic network, and distant infrasound networks. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 24 confirmed eruptions since 1775. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Shishaldin alert level raised from GREEN\/NORMAL to YELLOW\/ADVISORY.","sentUtc":"2017-12-06","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2017-11-30T14:09:05-09:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-11-30T14:09:05-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-11-30T14:09:05-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20171122\/1957Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin  (VNUM #311120)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 4 min W 176 deg 6 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5709 ft (1740 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ERecent observations of a robust steam plume and a period of gradually increasing seismicity over several months indicate that Great Sitkin Volcano has become restless and is exhibiting behavior that is above background levels. AVO is thus raising the aviation color code and volcano alert level to YELLOW\/ADVISORY.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPhotographs of the volcano taken by local observers on Sunday, November 19 show a light-colored vapor plume rising about 300 m (1,000 ft) above the vent area and extending about 15-20 km (9 \u201312 mi) to the south. Nothing unusual was observed in seismic or infrasound data around the time the photographs were taken and nothing noteworthy has been observed in satellite data since the emissions were observed. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAn increased number of small earthquakes was evident as early as late July 2016, and since then the level of seismic activity has fluctuated at low levels but has exhibited a gradual overall increase most notable since June 2017. Seismic activity to date has been characterized by earthquakes that are typically less than magnitude 1.0 and range in depth from near the summit of the volcano to 30 km below sea level. Most earthquakes are in one of two clusters, beneath the volcano's summit or just offshore the northwest coast of the island. The largest earthquake so far was a magnitude 2.8 on September 29, 2017.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPossible explosion signals were observed in seismic data on January 10 and July 21 of this year, but no confirmed emissions were observed locally or detected in infrasound data or satellite imagery. Great Sitkin has experienced at least one other episode of unrest characterized by vigorous steaming. This last occurred in 1953 but no subsequent eruptive activity developed. Minor steaming in the vicinity of the 1974 lava dome was observed in 1986 and in 2012 but no associated eruptive activity occurred.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nGreat Sitkin Volcano is monitored by a five-station seismic network on Great Sitkin Island and with additional seismic stations on the nearby islands of Igitkin, Adak, Kagalaska, and Kanaga. A six-element infrasound array to detect explosions (atmospheric pressure waves), was installed on Adak Island in June, 2017. AVO also uses satellite imagery to monitor Great Sitkin Volcano.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe current unrest is likely the result of magma intrusion beneath the volcano. Typically, such intrusions release gas, which can increase stress in the crust and lead to an increase in the number of earthquakes. If gases build up near the surface, they may be released suddenly in small explosions or robust emissions. It is possible, but not certain, that the volcano may eventually erupt. Prior to a significant eruptive event an even greater increase in seismicity should occur as magma rises to shallower levels in the crust. An ash-producing eruption similar to the most recent historical eruption in 1974 could generate airborne ash that may pose hazards to aircraft. Ash fallout on the nearby community of Adak and the surrounding ocean may also occur. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGreat Sitkin Volcano is a basaltic andesite volcano that occupies most of the northern half of Great Sitkin Island, a member of the Andreanof Islands group in the central Aleutian Islands. It is located 43 km (26 miles) east of the community of Adak. The volcano is a composite structure consisting of an older dissected volcano and a younger parasitic cone with a 3-km-diameter summit crater. A steep-sided lava dome, emplaced during an eruption in 1974, occupies the center of the crater. Great Sitkin erupted at least three times in the 20th century, most recently in 1974. That eruption produced at least one ash cloud that likely exceeded an altitude of 25,000 ft above sea level. A poorly documented eruption occurred in 1945, also producing a lava dome that was partially destroyed in the 1974 eruption. Within the past 280 years a large explosive eruption produced pyroclastic flows that partially filled the Glacier Creek valley on the southwest flank. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Elevated seismicity and observed steaming.","sentUtc":"2017-11-22","obs":"avo","vName":"Great Sitkin","vnum":"311120","noticeId":"DOI-USGS-AVO-2017-11-20T14:26:16-09:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-11-20T14:26:16-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-11-20T14:26:16-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170926\/0215Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA moderate, 2-minute-long eruption occurred at Cleveland Volcano beginning at 17:47 September 25 AKDT (01:47 September 26 UTC).  The explosion was detected by seismic and infrasound (air pressure) sensors.  Nothing has been observed in satellite data so far. We are keeping the Aviation Color Code\/Alert Level at ORANGE\/WATCH.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano is not monitored with a full real-time seismic network and this inhibits AVO's ability to detect unrest that may lead to future activity. We are able to detect explosive activity using infrasound and limited seismic instruments on the island.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Moderate eruption of Cleveland detected in seismic and infrasound data ","sentUtc":"2017-09-26","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2017-09-05T10:36:32-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-09-05T10:36:32-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-09-05T10:36:32-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170830\/1931Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESince mid June, 2017, unrest at Pavlof Volcano has gradually declined to levels now considered as normal background, non-eruptive behavior. The March 2016 eruption changed the configuration of the summit crater, such that it is slightly wider and has a more vertical orientation than before the 2016 eruption. Since then, the volcano has remained relatively quiet, although there was a brief period of elevated seismicity in early June, 2017 that resulted in AVO raising the Aviation Color Code to Yellow and the Alert Level to Advisory where it has remained until today.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nMany satellite views of the summit are now able to detect elevated surface temperatures within the crater and upper part of the volcanic conduit most likely associated with the emission of hot gases. This is now considered the normal thermal state of the volcano. Occasional emission of vapor plumes from the summit crater, sometimes visible from Cold Bay and Sand Point, is now relatively common. These emissions are also considered normal background behavior for Pavlof Volcano. On the basis of these observations, and the lack of any noteworthy seismic activity for the past several months, we are lowering the Aviation Color Code to Green and the Alert Level to Normal.  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof Volcano is a snow- and ice-covered stratovolcano located on the southwestern end of the Alaska Peninsula about 953 km (592 mi) southwest of Anchorage. The volcano is about 7 km (4.4 mi) in diameter and has active vents on the north and east sides close to the summit. With over 40 historic eruptions, it is one of the most consistently active volcanoes in the Aleutian arc. Eruptive activity is generally characterized by sporadic Strombolian lava fountaining continuing for a several-month period. Ash plumes as high as 49,000 ft ASL have been generated by past eruptions of Pavlof, and during the March 2016 eruption, ash plumes as high as 40,000 feet above sea level were generated and the ash was tracked in satellite data as distant as eastern Canada. The nearest community, Cold Bay, is located 60 km (37 miles) to the southwest of Pavlof. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Volcano has returned to background status.","sentUtc":"2017-08-30","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2017-08-30T09:52:42-08:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-08-30T09:52:42-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-08-30T09:52:42-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170830\/1315Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAVO has detected an increase in seismic activity and infrasound consistent with an explosive eruption at Bogoslof volcano beginning at 12:05 UTC (04:05 AKDT) August 30 and continuing. A low-level ash cloud producing lightning has been detected in satellite data, but does not appear to be much higher than about 20,000 feet above sea level. Emission of volcanic ash is likely occurring based on seismic, infrasound, lightning, and satellite data.  Winds are toward south-southeast. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe Aviation Color Code remains at ORANGE and the Volcano Alert Level remains at WATCH. AVO is evaluating all data sources and will provide more information as it becomes available.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAbout 20,000 feet above sea level\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Ewinds toward south southeast\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPlease see the NWS AAWU at http:\/\/www.weather.gov\/aawu\/sigmets for updated information on aviation warning messages.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosive activity beginning at 12:05 UTC today. No ash detected yet in satellite data.","sentUtc":"2017-08-30","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-08-30T04:47:09-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-08-30T04:47:09-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-08-30T04:47:09-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170828\/1939Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAVO has detected an explosive eruption at Bogoslof volcano beginning at 19:17 UTC (11:17 AKDT) August 28 and lasting about 2 minutes. No ash cloud has yet been detected in satellite data, but volcanic ash emission has likely occurred based on seismic and infrasound data.  Winds are toward southeast. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe Aviation Color Code remains at ORANGE and the Volcano Alert Level remains at WATCH. AVO is evaluating all data sources and will provide more information as it becomes available.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone detected yet. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Ewinds toward southeast\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPlease see the NWS AAWU at http:\/\/www.weather.gov\/aawu\/sigmets for updated information on aviation warning messages.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Short-duration explosion at 19:17 UTC today. No ash detected yet in satellite data.","sentUtc":"2017-08-28","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-08-28T11:29:29-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-08-28T11:29:29-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-08-28T11:29:29-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170828\/1153Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn explosive eruption began at Bogoslof volcano at 11:23 UTC (03:23 AKDT) on August 28 and is ongoing. No ash cloud has been detected as of yet in satellite data, but volcanic ash emission likely occurred based on seismic and infrasound data.  Signal strengths suggest that the cloud is likely above 20,000 ft asl. Winds are towards the east-southeast. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe Aviation Color Code remains at ORANGE and the Volcano Alert Level remains at WATCH. AVO is evaluating all data sources and will provide more information as it becomes available.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone detected yet. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Ewinds toward east-southeast\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPlease see the NWS AAWU at http:\/\/www.weather.gov\/aawu\/sigmets for updated information on aviation warning messages.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Short-duration explosion at 11:23 UTC today. No ash detected yet in satellite images.","sentUtc":"2017-08-28","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-08-28T03:37:55-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-08-28T03:37:55-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-08-28T03:37:55-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170827\/2340Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA brief explosive eruption began at Bogoslof volcano at 23:08 UTC (15:08 AKDT) on August 27 and lasted about two minutes. No ash cloud has been detected as of yet in satellite data, but volcanic ash emission likely occurred based on seismic and infrasound data.  Signal strengths suggest that the cloud is likely below 20,000 ft asl. Winds are towards the southeast. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe Aviation Color Code remains at ORANGE and the Volcano Alert Level remains at WATCH. AVO is evaluating all data sources and will provide more information as it becomes available.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone detected yet. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Ewinds toward southeast\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPlease see the NWS AAWU at http:\/\/www.weather.gov\/aawu\/sigmets for updated information on aviation warning messages.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Short-duration explosion at 23:08 UTC today. No ash detected yet in satellite images.","sentUtc":"2017-08-27","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-08-27T15:25:24-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-08-27T15:25:24-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-08-27T15:25:24-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170827\/0102Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA short-lived eruption began at Bogoslof volcano at 00:29 UTC on August 27 (16:29 AKDT on August 26) and lasted about 4 minutes.   No ash cloud has been detected as of yet in satellite data, but volcanic ash emissions likely occurred based on seismic and infrasound data. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWe are evaluating the magnitude of this eruptive episode. The Aviation Color Code remains at ORANGE and the Volcano Alert Level remains at WATCH at present. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone detected yet\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EWinds toward southeast\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPlease see the NWS AAWU at http:\/\/www.weather.gov\/aawu\/sigmets for updated information on aviation warning messages.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Short-lived eruption at 16:29 AKDT. No ash detected yet in satellite images.","sentUtc":"2017-08-27","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-08-26T16:54:58-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-08-26T16:54:58-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-08-26T16:54:58-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170822\/1918Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA moderate, 1-minute-long eruption occurred at Cleveland Volcano beginning at 10:43 AKDT (18:43 UTC) on 22 August.  The explosion was detected by seismic and infrasound (air pressure) sensors.  Nothing has been observed in satellite data so far. We are keeping the Aviation Color Code\/Alert Level at ORANGE\/WATCH.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano is not monitored with a full real-time seismic network and this inhibits AVO's ability to detect unrest that may lead to future activity. We are able to detect explosive activity using infrasound and limited seismic instruments on the island.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Paskievitch, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpaskie@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI jfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Moderate erupiton of Cleveland detected in seismic and infrasound data ","sentUtc":"2017-08-22","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2017-08-22T11:02:33-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-08-22T11:02:33-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-08-22T11:02:33-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170808\/1819Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo further ash emissions have occurred at Bogoslof Volcano since the three-hour-long eruption on Monday, 7 August that began around 10:00 AKST (18:00 UTC), and seismicity remains low.  We are therefore lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH.  Additional ash-producing eruptions could occur at any time, however, with no detectable precursors.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No new activity since eruption at 18:00 UTC August 7.  Color code lowered to ORANGE. ","sentUtc":"2017-08-08","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-08-08T08:47:03-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-08-08T08:47:03-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-08-08T08:47:03-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170807\/1853Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA significant explosive eruption began at Bogoslof volcano at about 18:00 UTC (10:00 AKDT) on August 7 and is continuing. A pilot report at 18:45 UTC indicates that the ash cloud had reached 32,000 ft asl. Thus, AVO is raising the Aviation Color Code to RED and Alert level to WARNING for Bogoslof volcano. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWinds are currently to the south. Seismic and infrasound data suggest that the ash emissions are continuing. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E32,000 ft asl estimated by pilot report\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECloud moving towards south\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe SIGMET warning message for aviation, issued by the National Weather Service Alaska Aviation Weather Unit, currently is in effect up to 32,000 ft above sea level. Status of the ash cloud forecast can be found at their website at http:\/\/aawu.arh.noaa.gov\/\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSee http:\/\/www.weather.gov\/afc\/ for details about expected ash fallout.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Significant explosive eruption and increase to Aviation Color Code and Alert Level.","sentUtc":"2017-08-07","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-08-07T10:46:16-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-08-07T10:46:16-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-08-07T10:46:16-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170807\/1834Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn explosive eruption of Bogoslof volcano began at about 18:00 UTC (10:00 AKDT) based on infrasound and seismic activity following more than an hour of increased seismicity. Satellite data from 18:00 UTC show an eruption cloud rising above the low cloud deck which is at an altitude of about 1500 ft. asl. There is no estimate of the eruption cloud height as of this time. As of yet there is no lightning activity that it typically observed during significant ash emissions.  This suggests that the activity is currently at a low level and the Aviation Color Code remains at ORANGE and the Volcano Alert Level remains at WATCH. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO is evaluating all data sources and will update this report as more information becomes available.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot determined yet\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVisible in satellite data from 18:00 UTC\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EStatus of any ash clouds can be found at the Alaska Aviation Weather Unit website at http:\/\/aawu.arh.noaa.gov\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosive activity begining at 18:00 UTC. ","sentUtc":"2017-08-07","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-08-07T10:02:06-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-08-07T10:02:06-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-08-07T10:02:06-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170711\/0158Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn eruption of Bogoslof volcano began at 1:06 UTC on July 11  (17:06 AKDT on July 10) and lasted about 15 minutes based on seismic data.  No volcanic cloud has been observed in satellite data, and no volcanic lightning or infrasound has been detected.  Winds are toward the east-southeast. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWe are evaluating the magnitude of this eruptive episode. The Aviation Color Code remains at ORANGE and the Volcano Alert Level remains at WATCH at present. AVO is evaluating all data sources and will update this report as more information becomes available.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone detected yet. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPlease see the NWS AAWU at http:\/\/www.weather.gov\/aawu\/sigmets for updated information on aviation warning messages.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nchris@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Eruption occurred based on seismic. No ash detected yet in satellite.","sentUtc":"2017-07-11","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-07-10T17:40:29-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-07-10T17:40:29-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-07-10T17:40:29-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170710\/1840Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn eruption began at Bogoslof volcano at 18:00 UTC on July 10  (10:00 AKDT on July 10) and lasted 8 minutes.   No ash cloud has been detected as of yet in satellite data, but volcanic ash emissions are likely occurring based on infrasound data.  Winds are towards the southeast. Ash trajectory models indicate that a possible trace ash fall could occur on Unalaska, but unlikely to affect Dutch Harbor.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWe are evaluating the magnitude of this eruptive episode. The Aviation Color Code remains at ORANGE and the Volcano Alert Level remains at WATCH at present. AVO is evaluating all data sources and will update this report as more information becomes available.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone detected yet. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPlease see the NWS AAWU at http:\/\/www.weather.gov\/aawu\/sigmets for updated information on aviation warning messages.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nchris@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nGIpavel@gi.alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Eruption occurred based on seismic\/infrasound data. No ash detected yet in satellite.","sentUtc":"2017-07-10","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-07-10T10:20:14-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-07-10T10:20:14-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-07-10T10:20:14-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170710\/1610Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo further ash emissions have occurred at Bogoslof Volcano since the series of explosions that began on Sunday, 09 July at 23:47 AKDT (07:47 UTC July 10) and ended about 02:35 AKDT (10:35 UTC) July 10.  A small eruption cloud associated with the first two eruptive pulses was evident in satellite data. This cloud may have reached as high as 20,000 ft. above sea level and was carried to the southeast but dissipated rapidly. No additional volcanic clouds were observed in satellite data.  The activity also was detected in seismic and infrasound data.  After about 03:00 AKDT (11:00 UTC) seismicity declined and has remained at low levels.  We are therefore lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH.  Given the ongoing episodic nature of eruptive activity at Bogoslof, additional ash-producing eruptions could occur at any time.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nchris@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nGIpavel@gi.alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No new activity since eruption last night.  Color code lowered to ORANGE. ","sentUtc":"2017-07-10","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-07-10T07:30:09-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-07-10T07:30:09-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-07-10T07:30:09-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170710\/0851Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn eruption began at Bogoslof volcano at 07:47 UTC on July 9  (23:47 AKDT on July 9) lasting about 5 minutes followed 15 minutes later by a second explosion that lasted about 7 minutes.   A small ash cloud has been detected in satellite data.  Winds are towards the southeast. The Aviation Color Code is upgraded to RED and the Volcano Alert Level to WARNING.  Ash trajectory models indicate that a possible trace ash fall could occur on Unalaska, but unlikely to affect Dutch Harbor.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESmall cloud detectedt. NWS eruption SIGMET issued to 30,000 ft asl.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe National Weather Service Alaska Aviation Weather Unit has issued an eruption SIGMET warning for aviation up to 30,000 ft above sea level. This may be revised as new information becomes available. Please see the NWS AAWU at http:\/\/www.weather.gov\/aawu\/sigmets for updated information on aviation warning messages.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nchris@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nGIpavel@gi.alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Eruption based on seismic & infrasound data. Ash detected in satellite images.","sentUtc":"2017-07-10","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-07-10T00:09:56-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-07-10T00:09:56-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-07-10T00:09:56-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170709\/1524Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo further ash emissions have occurred at Bogoslof Volcano since the explosion on Saturday, 08 July at 10:15 AKDT (18:15 UTC) and seismicity remains low.  We are therefore lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH.  Additional ash-producing eruptions could occur at any time, however, with no detectable precursors.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nchris@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nGIpavel@gi.alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No new activity since eruption at 18:15 UTC July 8.  Color code lowered to ORANGE. ","sentUtc":"2017-07-09","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-07-09T07:02:11-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-07-09T07:02:11-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-07-09T07:02:11-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170708\/1901Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ETwo short duration eruption pulses were detected in seismic data. The first began at 18:15 UTC (10:15 AKDT) that  lasted about 9 minutes, followed by a shorter pulse at 18:29 UTC (10:29 AKDT). The cloud has been observed in satellite data at an estimated height of 30,000 ft asl. The Aviation Color Code is being increased to Red and the Alert Level to Warning.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSeismic data has decreased following these two eruption pulses, but additional explosive activity is possible. Winds are towards the north over the Bering sea, and ashfall on populated islands is not likely. The National Weather Service has issued an eruption SIGMET warning for aviation with an eruption cloud height of 30,000 ft. This may be revised as new satellite data becomes available. See http:\/\/www.weather.gov\/aawu\/sigmets for the most current information.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E30,000 ft based on satellite data.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EWinds are towards the north\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nchris@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nGIpavel@gi.alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosive eruption occurred. Increasing Aviation Color Code to Red.","sentUtc":"2017-07-08","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-07-08T10:32:31-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-07-08T10:32:31-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-07-08T10:32:31-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170705\/1835Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo further ash emissions have occurred at Bogoslof Volcano since the explosion on Tuesday, 04 July at 19:07 AKDT (03:07 UTC 05 July) and seismicity remains low.  We are therefore lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH.  Additional ash-producing eruptions could occur at any time, however, with no detectable precursors.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nMike West, Acting Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\nmewest@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No new activity since eruption at 03:07 UTC.  Color code lowered to ORANGE. ","sentUtc":"2017-07-05","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-07-05T09:47:22-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-07-05T09:47:22-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-07-05T09:47:22-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170705\/0328Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAnother eruption began at Bogoslof at 19:07 AKDT July 4 (03:07 UTC, July 5) that lasted about 11 minutes and was detected in seismic and infrasound data. There are no satellite data yet available.  Winds are generally to the southeast.  The Aviation Color Code\/Alert Level remains at RED\/WARNING.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EWinds are to southeast\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EStatus of the ash cloud forecast can be found at the National Weather Service Alaska Aviation Weather Unit website at http:\/\/aawu.arh.noaa.gov\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nMike West, Acting Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\nmewest@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Eruption detected in seismic and infrasound data.","sentUtc":"2017-07-05","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-07-04T19:20:25-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-07-04T19:20:25-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-07-04T19:20:25-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170705\/0135Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn eruption began at Bogoslof at 16:51 AKDT July 4 (00:51 UTC, July 5) that lasted 13 minutes and was detected in seismic, infrasound, and satellite data. Winds are generally to the southeast, and initial satellite data suggest the cloud may be as high as 32,000 ft asl. AVO is raising the Aviation Color Code\/Alert Level to RED\/WARNING.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E32,000 ft asl\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EWinds are to southeast\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENWS has issued a SIGMET to 32,000 ft.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nMike West, Acting Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\nmewest@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Eruption detected in seismic, infrasound, and satellite data. ","sentUtc":"2017-07-05","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-07-04T17:13:21-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-07-04T17:13:21-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-07-04T17:13:21-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170704\/1205Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA moderate, 10-minute-long eruption occurred at Cleveland Volcano beginning at 03:19 AKDT (11:19 UTC) on 4 July.  The explosion was detected by seismic and infrasound (air pressure) sensors.  No satellite data is currently available. We are elevating the Aviation Color Code\/Alert Level to ORANGE\/WATCH.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano is not monitored with a full real-time seismic network and this inhibits AVO's ability to detect unrest that may lead to future activity. We are able to detect explosive activity using infrasound and limited seismic instruments on the island.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nMike West, Acting Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\nmewest@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Moderate erupiton of Cleveland detected in seismic and infrasound data ","sentUtc":"2017-07-04","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2017-07-04T03:45:43-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-07-04T03:45:43-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-07-04T03:45:43-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170703\/1637Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo further ash emissions have occurred at Bogoslof Volcano since the explosion on Sunday, 02 July at 12:48 AKDT (20:48 UTC) and seismicity remains low.  We are therefore lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH.  Additional ash-producing eruptions could occur at any time, however, with no detectable precursors.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nMike West, Acting Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\nmewest@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No new activity since eruption at 20:48 UTC, 02 Jul.  Color code lowered to ORANGE. ","sentUtc":"2017-07-03","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-07-02T17:24:01-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-07-02T17:24:01-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-07-02T17:24:01-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170702\/2147Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA significant explosive eruption occurred at 20:48 UTC July 2 (12:48 AKDT July 2).  AVO is raising the Aviation Color Code to RED and Alert level to WARNING for Bogoslof volcano. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSatellite data and pilot reports  shows a volcanic cloud with an estimated altitude of 36,000 ft asl moving towards the east. Seismic and infrasound data suggest that the ash emissions are no longer continuing. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E36,000 ft asl estimated by satellite and pilot report\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECloud moving towards east\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe SIGMET warning message for aviation, issued by the National Weather Service Alaska Aviation Weather Unit, currently is in effect up to 36,000 ft above sea level. Status of the ash cloud forecast can be found at their website at http:\/\/aawu.arh.noaa.gov\/\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSee http:\/\/www.weather.gov\/afc\/ for details on possible ash fall on communities. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nMike West, Acting Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\nmewest@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Significant explosive eruption and increase to Aviation Color Code and Alert Level.","sentUtc":"2017-07-02","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-07-02T13:34:45-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-07-02T13:34:45-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-07-02T13:34:45-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170702\/2119Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn eruption began at Bogoslof volcano at 20:48 UTC on July 02 (12:48 AKDT on July 2). Eruption seismicity had declined by 21:04 UTC (13:04 AKDT). No ash cloud has been detected as of yet in satellite data, but volcanic ash emissions likely occurred  based on infrasound data.  Winds are towards the east. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe Aviation Color Code remains at ORANGE and the Volcano Alert Level remains at WATCH at present. AVO is evaluating all data sources and will update this report as more information becomes available.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone detected yet. NWS eruption SIGMET issued.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EWinds towards east\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe National Weather Service Alaska Aviation Weather Unit has issued an eruption SIGMET warning for aviation. This may be revised as new information becomes available. Please see the NWS AAWU at http:\/\/www.weather.gov\/aawu\/sigmets for updated information on aviation warning messages.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nMike West, Acting Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\nmewest@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Eruption at 20:48 UTC, based on seismic data. No ash detected yet in satellite images.","sentUtc":"2017-07-02","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-07-02T13:00:36-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-07-02T13:00:36-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-07-02T13:00:36-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170630\/0155Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn eruption began at Bogoslof volcano at 01:24 UTC on June 30 (17:24 AKDT on June 29).  Seismicity returned to background at 01:45 UTC (17:45 AKDT) indicating an end or pause to the explosion.  No ash cloud has been detected as of yet in satellite data, but infrasound signals recorded from Bogoslof suggest volcanic ash emissions likely occurred.  Winds are towards the north. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWe are evaluating the magnitude of this eruptive episode. The Aviation Color Code remains at ORANGE and the Volcano Alert Level remains at WATCH at present. AVO is evaluating all data sources and will update this report as more information becomes available.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone detected yet. NWS eruption SIGMET issued. Unknown height\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EWinds to the north\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe National Weather Service Alaska Aviation Weather Unit has issued an eruption SIGMET warning for aviation. This may be revised as new information becomes available. Please see the NWS AAWU at http:\/\/www.weather.gov\/aawu\/ for updated information on aviation warning messages.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Eruption in progress, based on seismic data. No ash detected yet in satellite images.","sentUtc":"2017-06-30","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-06-29T17:45:19-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-06-29T17:45:19-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-06-29T17:45:19-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170627\/2336Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo further ash emissions have occurred at Bogoslof Volcano since the explosion on June 27 at 03:17 AKDT (11:17 UTC) and seismicity remains low.  We are therefore lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH.  Additional ash-producing eruptions could occur at any time, however, with no detectable precursors.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No new activity since eruption at 11:17 UTC. Color code lowered to ORANGE. ","sentUtc":"2017-06-27","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-06-27T14:31:40-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-06-27T14:31:40-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-06-27T14:31:40-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170627\/1152Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA significant explosive eruption began at Bogoslof volcano at 11:17 UTC on June 27  (03:17 AKDT) as indicated in seismic and lighting data and is continuing.   Although at this time there have been no satellite images or pilot reports received confirming eruptive activity, these monitoring data strongly suggest that significant ash emissions have occurred. Thus, AVO is raising the Aviation Color Code to RED and Alert level to WARNING.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO is evaluating all data sources and will update this report as more information becomes available.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone detected yet. NWS eruption SIGMET issued to 30,000 ft asl.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EWind direction to the northeast\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe National Weather Service Alaska Aviation Weather Unit has issued an eruption SIGMET warning for aviation up to 30,000 ft above sea level. This may be revised as new information becomes available. Please see the NWS AAWU at http:\/\/www.weather.gov\/aawu\/sigmets for updated information on aviation warning messages.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Significant explosive eruption and increase to Aviation Color Code and Alert Level.","sentUtc":"2017-06-27","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-06-27T03:33:33-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-06-27T03:33:33-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-06-27T03:33:33-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170627\/0248Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismicity for the eruption at Bogoslof volcano at 00:45 UTC on June 27 (16:45 AKDT on June 26) remained elevated until 00:59 UTC (16:59 AKDT) and has since declined to background levels. The eruption produced a volcanic cloud moving northeast with an estimated altitude of 25,000 ft asl by satellite data, and a pilot reported a visible cloud at 22,000 ft asl. Given the lower altitude of the volcanic cloud and short duration of the explosion, the Aviation Color Code remains ORANGE and Volcano Alert Level WATCH.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nRecent eruptive episodes have produced multiple short-duration explosions interspersed with minutes to hours of inactivity between events, and future explosions could occur with little to no warning. AVO will continue to monitor seismic and infrasound data from nearby islands, as well as lightning data from the World Wide Lightning Location Network for signs of renewed activity.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E25,000 ft asl estimated by satellite & pilot report\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECloud moving towards northeast\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe SIGMET warning message for aviation, issued by the National Weather Service Alaska Aviation Weather Unit currently is in effect up to 25,000 ft above sea level. Status of the ash cloud forecast can be found at their website at http:\/\/aawu.arh.noaa.gov\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Seismicity has declined. Ash emissions decreased below detection limit or ended.","sentUtc":"2017-06-27","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-06-26T18:06:39-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-06-26T18:06:39-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-06-26T18:06:39-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170627\/0111Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn eruption began at Bogoslof volcano at 00:45 UTC on June 27 (16:45 AKDT on June 26) and is continuing.   No ash cloud has been detected as of yet in satellite data through 00:50 UTC, but volcanic ash emissions are likely occurring based on seismic data.  Winds are towards the northeast. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWe are evaluating the magnitude of this eruptive episode. The Aviation Color Code remains at ORANGE and the Volcano Alert Level remains at WATCH at present. AVO is evaluating all data sources and will update this report as more information becomes available.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone detected yet in satellite data through 00:50 UTC.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPlease see the NWS AAWU at http:\/\/www.weather.gov\/aawu\/sigmets for updated information on aviation warning messages should they be issued.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Eruption in progress, based on seismic data. No ash detected yet in satellite images.","sentUtc":"2017-06-27","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-06-26T16:53:59-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-06-26T16:53:59-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-06-26T16:53:59-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170626\/2006Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ERecent observations of Cleveland Volcano suggest that unrest has declined and it is unlikely that eruptive activity is continuing. Satellite observations have yielded no evidence for continuing lava effusion and there have been no detections of anomalous seismicity or infrasound from the volcano since a brief explosion on Tuesday evening (May 16) at 19:17 AKDT (03:17 May 17 UTC). Evidence for lava effusion in the summit crater was observed in satellite data on June 7, but since then observed surface temperatures have become weaker, suggesting that lava effusion has paused or ended.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe overall decline in unrest and lack of evidence for lava effusion warrants downgrading the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano is not monitored with a full real-time seismic network and this inhibits AVO's ability to detect unrest that may lead to future activity. We are able to detect explosive activity using infrasound and limited seismic instruments on the island.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Status of Cleveland Volcano downgraded to YELLOW\/ADVISORY.  ","sentUtc":"2017-06-26","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2017-06-26T09:11:34-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-06-26T09:11:34-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-06-26T09:11:34-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170624\/1954Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo further explosions or ash emissions have been detected at Bogoslof Volcano since the explosive event at 0:40-0:44 AKDT (8:40-8:44 UTC), June 24. Since then, Bogoslof seismicity has remained low and nothing noteworthy has been detected in satellite, infrasound or lightning data.  We are therefore lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH.  Additional ash-producing eruptions could occur at any time, and precursory unrest may be minor or not detectable.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone Observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EDave Schneider, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ndjschneider@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No new activity since explosion at 8:40-8:44 UTC.  Color code lowered to ORANGE. ","sentUtc":"2017-06-24","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-06-24T11:17:32-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-06-24T11:17:32-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-06-24T11:17:32-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170624\/0220Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA significant explosive eruption at Bogoslof volcano occurred at 00:49 UTC, June 24 (16:49 AKDT, June 23) and lasted about 10 minutes. The eruption produced a volcanic cloud that reached about 36,000 ft above sea level, and was accompanied by strong seismcity, lightning and infrasound. Thus, AVO is raising the Aviation Color Code to RED and Alert level to WARNING for Bogoslof volcano. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSatellite data through 1:30 UTC shows a volcanic cloud with an estimated altitude of 36,000 ft asl moving towards the northeast. Seismic and infrasound data suggest that the ash emissions are no longer continuing. The volcano is in a restless condition and additional explosive events may occur.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E36,000 ft asl estimated by satellite and pilot report of cloud to 30,000 ft asl.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECloud moving towards northeast\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe SIGMET warning message for aviation, issued by the National Weather Service Alaska Aviation Weather Unit currently is in effect up to 36,000 ft above sea level. Status of the ash cloud forecast can be found at their website at http:\/\/www.weather.gov\/aawu\/sigmets\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nNo ash fallout is expected in populated areas, as the ash cloud is expected to be transported out over the ocean. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EDave Schneider, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ndjschneider@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Significant explosive eruption and increase to Aviation Color Code and Alert Level.","sentUtc":"2017-06-24","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-06-23T17:56:22-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-06-23T17:56:22-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-06-23T17:56:22-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170624\/0131Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn explosion was detected in seismic and infrasound data at Bogoslof volcano beginning at 00:49 UTC, June 24  (16:49 AKDT, June 23) and lasting about 10 minutes. A small ash cloud was observed in satellite data starting at 0100 UTC. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWe are evaluating the magnitude of this eruptive episode. The Aviation Color Code remains at ORANGE and the Volcano Alert Level remains at WATCH at present. We will update this report as more information becomes available.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E Preliminary SIGMET issued by NWS to 30,000 ft asl.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EObserved in satellite beginning at 0100 UTC\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe National Weather Service Alaska Aviation Weather Unit has issued an eruption SIGMET warning for aviation up to 30,000 ft above sea level. This may be revised as new information becomes available. Please see the NWS AAWU at http:\/\/www.weather.gov\/aawu\/sigmets for updated information on aviation warning messages.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EDave Schneider, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ndjschneider@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Eruption in progress, based on seismic data. No ash detected yet in satellite images.","sentUtc":"2017-06-24","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-06-23T17:08:59-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-06-23T17:08:59-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-06-23T17:08:59-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170613\/2035Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo new explosive activity has been observed at Bogoslof volcano since the small explosion this morning  at 8:17 AKDT (16:17 UTC).   No ash cloud was detected in satellite imagery, likely because it was too small or below our detection limits.  The National Weather Service Alaska Aviation Weather Unit did not issue a SIGMET for this mornings event. No detectable activity has been seen in seismic or infrasound data since the explosion. We are therefore, lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH. Additional ash-producing eruptions could occur at any time, however, with no detectable precursors.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enone detected\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EStatus of ash cloud forecasts can be found at the National Weather Service Alaska Aviation Weather Unit website at http:\/\/aawu.arh.noaa.gov\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"no new explosive activity detected since this mornings small explosion.","sentUtc":"2017-06-13","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-06-13T12:27:53-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-06-13T12:27:53-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-06-13T12:27:53-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170613\/1648Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA six-minute-long explosion was detected in seismic and infrasound data at 8:17 AKDT (16:17 UTC). There have been no satellite images of a resulting volcanic cloud, and its height is currently unknown. Lower level winds are currently to the northwest, and higher level winds to the southeast, over southern Unalaska Island. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe Aviation Color Code remains at RED and Volcano Alert Level at WARNING. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Eunknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ELower-level winds to NW; higher level winds to SE\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EStatus of the ash cloud forecast can be found at the National Weather Service Alaska Aviation Weather Unit website at http:\/\/aawu.arh.noaa.gov\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Six-minute-long explosion at 8:17 AKDT (16:17 UTC). Cloud height unknown. ","sentUtc":"2017-06-13","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-06-13T08:36:23-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-06-13T08:36:23-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-06-13T08:36:23-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170613\/0340Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe eruption of Bogoslof that began 01:47 UTC June 13 (17:47 AKDT June 12) with a 9-minute duration explosion has resumed starting at 02:57 UTC June 13 (18:57 AKDT June 12) based on seismic and infrasound data. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe ash cloud produced during the initial 9-minute event has been observed in satellite data  through 02:20 UTC June 13 (18:20 AKDT June 12) and is estimated to be at about 25,000 feet above sea level drifting SE toward Unalaska Island.  Ash emissions from this new activity have yet to be observed but they are likely occurring with winds to the SE.  Thus, AVO is raising the Aviation Color Code to RED and Alert level to WARNING for Bogoslof volcano.  Activity is ongoing and additional explosive events may occur.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E25,000 ft asl estimated by satellite data.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECloud moving towards SE\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe SIGMET warning message for aviation, issued by the National Weather Service Alaska Aviation Weather Unit currently is in effect up to 25,000 ft above sea level. Status of the ash cloud forecast can be found at their website at http:\/\/aawu.arh.noaa.gov\/\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nNo ash fallout is expected in populated areas, as the ash cloud is expected to be transported out over the ocean. \u003COR\u003E The National Weather Service in has issued a Special Weather Statement for the possibility of a trace amount of ash fallout in Unalaska\/Dutch Harbor tonight. See http:\/\/www.weather.gov\/afc\/ for details.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Significant explosive eruption and increase to Aviation Color Code and Alert Level.","sentUtc":"2017-06-13","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-06-12T19:09:03-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-06-12T19:09:03-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-06-12T19:09:03-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170613\/0213Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA short-lived eruption of Bogoslof volcano began June 13 at 01:47 UTC (17:47 AKDT June 12) and lasted about 9 minutes according to seismic and infrasound  data.   No ash cloud has been detected in satellite data yet but a single lightning stroke has been observed, thus volcanic ash emissions are likely occurring.   Winds are to the southeast and no ashfall is expected on communities.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWe are evaluating the magnitude of this eruptive episode and activity may resume at any time.  The Aviation Color Code remains at ORANGE and the Volcano Alert Level remains at WATCH at present. AVO is evaluating all data sources and will update this report as more information becomes available.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone detected yet. NWS eruption SIGMET issued to 25,000 ft asl.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe National Weather Service Alaska Aviation Weather Unit has issued an eruption SIGMET warning for aviation up to 25,000 ft above sea level. This may be revised as new information becomes available. Please see the NWS AAWU at http:\/\/www.weather.gov\/aawu\/sigmets for updated information on aviation warning messages.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Eruption in progress, based on seismic data. No ash detected yet in satellite images.","sentUtc":"2017-06-13","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-06-12T18:00:42-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-06-12T18:00:42-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-06-12T18:00:42-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170610\/2301Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo further ash emissions have occurred at Bogoslof Volcano since the explosion on Saturday, June 10 at 3:18 AKDT (11:18 UTC) and seismicity remains low.  We are therefore lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH.  Additional ash-producing eruptions could occur at any time, however, with no detectable precursors.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPlease see the NWS AAWU at http:\/\/www.weather.gov\/aawu\/sigmets for updated information on aviation warning messages.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No new activity since eruption at 11:18 UTC.  Color code lowered to ORANGE. ","sentUtc":"2017-06-10","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-06-10T13:08:45-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-06-10T13:08:45-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-06-10T13:08:45-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170610\/1303Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn explosive eruption is detected in multiple data streams. Small explosions were first observed on infrasound stations located on nearby Islands beginning  at 11:18 UTC (3:18 AKDT).  Activity transitioned to continuous seismic tremor at about 12:16 UTC and is ongoing. An eruption cloud has been observed in satellite data and lightning has been detected. AVO is raising the Aviation Color Code to RED  and the Volcano Alert Level remains at WARNING.  More information will be released as it becomes available. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E30,000 ft estimate  at 12:20 UTC\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EWinds are generally northward\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe National Weather Service has issued a SIGMET for this eruption to 30,000 ft asl. Please check their information at http:\/\/www.weather.gov\/aawu\/ as this is an evolving situation and cloud height may change.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosion eruption seen in satellite, seismic, infrasound, lightning. ","sentUtc":"2017-06-10","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-06-10T04:15:28-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-06-10T04:15:28-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-06-10T04:15:28-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170608\/0605Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA short duration explosive event occurred at Bogoslof volcano at 5:28 UTC on 8 June (21:28 AKDT on 7 June). Seismic and infrasound signals indicate that this event was very similar to the event from earlier today at 14:30 UTC.  The duration of the event was less than 2 minutes, and seismicity and infrasound returned to low levels following the explosion. A small steam-rich volcanic cloud is visible in satellite data, rising no more than 10,000 ft asl. Due to the brevity of the event, the Aviation Color Code remains at ORANGE and the Volcano Alert Level remains at WATCH. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10,000 ft asl\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EWhite in visible wavelength satellite data.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe National Weather Service has issued a SIGMET warning for aviation for a volcanic cloud up to 10,000 ft asl. See http:\/\/www.weather.gov\/aawu\/sigmets for updated information.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Short duration explosive event detected.","sentUtc":"2017-06-08","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-06-07T21:43:06-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-06-07T21:43:06-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-06-07T21:43:06-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170608\/0025Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA new lava dome has been observed in satellite data from earlier today. It is located in the northern portion of the vent lagoon, has breached sea level, and is about 110 m across. A robust steam plume is visible in satellite data, and at 2250 UTC (14:50 AKDT) extended for 75 km to the south over the western end of Unalaska Island at an estimated altitude of less than 10,000 ft asl. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSome past eruptions of Bogoslof have ended with the emplacement of a lava dome, but in other cases, lava effusion has been followed by additional explosions. If future explosions do occur, the resulting volcanic cloud could be more ash-rich than those that have occurred thus far in the sequence that began in 2016. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThis level of activity is consistent with the current  Aviation Color Code of ORANGE and the Volcano Alert Level of WATCH. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ELess than 10,000 ft asl\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESteam-rich\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"New lava dome and robust steam plume observed.","sentUtc":"2017-06-08","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-06-07T15:51:28-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-06-07T15:51:28-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-06-07T15:51:28-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170607\/2303Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EOver the past several days, there has been an increase in low-frequency earthquake activity at Pavlof. Such increases are sometimes seen prior to eruptive episodes, however in other cases they decline without eruptive activity. In addition, several short duration tremor-bursts have been observed today, and AVO received a pilot report of a possible ash cloud this afternoon. Infrasound data from local instruments on Pavlof and from a more distant network in Sand Point do not show any evidence of significant explosive activity. Precursory activity prior to eruptions of Pavlof are always very subtle, thus, on the basis of these observations we are increasing the Aviation Color Code to Yellow and the Alert Level to Advisory.  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E4000 ft. Pilot report of possible ash cloud.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPossible cloud not coming from vent, but drifting downwind.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof Volcano is a snow- and ice-covered stratovolcano located on the southwestern end of the Alaska Peninsula about 953 km (592 mi) southwest of Anchorage. The volcano is about 7 km (4.4 mi) in diameter and has active vents on the north and east sides close to the summit. With over 40 historic eruptions, it is one of the most consistently active volcanoes in the Aleutian arc. Eruptive activity is generally characterized by sporadic Strombolian lava fountaining continuing for a several-month period. Ash plumes as high as 49,000 ft ASL have been generated by past eruptions of Pavlof, and during the March 2016 eruption, ash plumes as high as 40,000 feet above sea level were generated and the ash was tracked in satellite data as distant as eastern Canada. The nearest community, Cold Bay, is located 60 km (37 miles) to the southwest of Pavlof. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Increase in seismicity indicating heightened unrest.","sentUtc":"2017-06-07","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2017-06-07T14:09:32-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-06-07T14:09:32-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-06-07T14:09:32-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170607\/1505Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA short duration explosive event occurred at Bogoslof volcano at 14:30 UTC on June 7 (6:30 am AKDT).  Seismic signals indicate that this event was slightly larger than a similar explosion detected at Bogoslof yesterday morning   The duration of the event was about 2 minutes, and seismicity returned to low levels following the explosion.  No volcanic cloud has been seen in satellite data as of 14:30 UTC.   Due to the brevity of the event, the Aviation Color Code remains at ORANGE and the Volcano Alert Level remains at WATCH. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThis level of activity is consistent with the current  Aviation Color Code of ORANGE and the Volcano Alert Level of WATCH. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone observed in satellite data through 14:30 UTC\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Short duration explosive event detected.  ","sentUtc":"2017-06-07","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-06-07T06:44:31-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-06-07T06:44:31-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-06-07T06:44:31-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170606\/1445Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA short duration explosive event occurred at Bogoslof volcano at 14:00 UTC on June 6 (6:00 am AKDT)   The duration of the event was less than 2 minutes, and seismicity returned to low levels following the explosion.  No cloud from this event was observed in satellite data.  Due to the brevity of the event, the Aviation Color Code remains at ORANGE and the Volcano Alert Level remains at WATCH. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThis level of activity is consistent with the current  Aviation Color Code of ORANGE and the Volcano Alert Level of WATCH. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone Observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF jflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Short duration explosive event detected.  ","sentUtc":"2017-06-06","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-06-06T06:18:09-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-06-06T06:18:09-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-06-06T06:18:09-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170605\/2215Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ELow amplitude seismic tremor from Bogoslof Volcano was detected in seismic data beginning at about 20:29, June 5 UTC (12:29 AKST) and has since decreased to background levels.  A USF&WS vessel in the vicinity reported vigorous steaming and a \u0022white plume\u0022 rising several thousand feet above sea level. This cloud was too small to be observed in satellite images.  Earlier today, a short duration explosive event occurred at Bogoslof (15:50 UTC, June 5) and produced a small volcanic cloud that was observed by a pilot. These events are near the lower level of detection threshold based on current monitoring capabilities and reinforce the hazard that continues to exist in the vicinity of Bogolsof volcano. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThis level of activity is consistent with the current  Aviation Color Code of ORANGE and the Volcano Alert Level of WATCH. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESeveral thousand feet asl.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVisual observation. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF jflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Vigorous steam emissions reported accompanied by seismic tremor.","sentUtc":"2017-06-05","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-06-05T13:41:59-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-06-05T13:41:59-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-06-05T13:41:59-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170605\/1630Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA short duration explosive event occurred at Bogoslof volcano at 15:50 UTC on June 5  (7:50 am AKDT) and produced a small volcanic cloud that was observed by a pilot. Winds are transporting the cloud towards the south at an estimated altitude of 20,000 ft asl. The duration of the event was less than 2 minutes, and seismicity returned to low levels following the explosion.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDue to the brevity of the event, the Aviation Color Code remains at ORANGE and the Volcano Alert Level remains at WATCH. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E20,000 ft asl\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENWS eruption SIGMET issued.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe National Weather Service Alaska Aviation Weather Unit has issued an eruption SIGMET warning for aviation up to 20,000 ft above sea level. Please see the NWS AAWU at http:\/\/www.weather.gov\/aawu\/sigmets for updated information on aviation warning messages.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF jflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Short duration explosive event. Volcanic cloud to 20,000 ft asl.","sentUtc":"2017-06-05","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-06-05T08:15:28-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-06-05T08:15:28-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-06-05T08:15:28-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170601\/0451Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn short duration explosive event occurred at Bogoslof volcano at 2:42  UTC on June 1  (6:42 AKDT on May 31) and produced a small volcanic ash cloud that was observed in satellite data. Winds are transporting the cloud towards the northwest at an estimated altitude of 23,000 ft asl.  The duration of the event was less than 10 minutes, and seismicity returned to low levels following the explosion.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDue to the brevity of the event, the Aviation Color Code remains at ORANGE and the Volcano Alert Level remains at WATCH. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E23,000 ft asl\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENWS eruption SIGMET issued.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe National Weather Service Alaska Aviation Weather Unit has issued an eruption SIGMET warning for aviation up to 23,000 ft above sea level. Please see the NWS AAWU at http:\/\/www.weather.gov\/aawu\/sigmets for updated information on aviation warning messages.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF \u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Short duration explosive event. Ash cloud to 23,000 ft asl.","sentUtc":"2017-06-01","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-05-31T20:39:59-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-05-31T20:39:59-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-05-31T20:39:59-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170529\/0509Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo further ash emissions have occurred at Bogoslof Volcano since the explosion on Sunday, 28 May at 14:16 AKDT (22:16 UTC) and seismicity remains low.  We are therefore lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH.  Additional ash-producing eruptions could occur at any time, however, with no detectable precursors.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No new activity since eruption at 22:16 UTC.  Color code lowered to ORANGE. ","sentUtc":"2017-05-29","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-05-28T15:49:20-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-05-28T15:49:20-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-05-28T15:49:20-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170528\/2249Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn eruption began at Bogoslof volcano today at about 14:16 AKDT (22:16 UTC May 28) and is continuing based on seismic data. No ash cloud has been detected as of yet in satellite data, but volcanic ash emissions are occurring on the basis of lightning detections. Thus, AVO is raising the Aviation Color Code to RED and Alert level to WARNING. Winds are towards the northwest. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO is evaluating all data sources and will update this report as more information becomes available.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone observed yet. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EWinds to northwest\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPlease see the NWS AAWU at http:\/\/www.weather.gov\/aawu\/sigmets for updated information on aviation warning messages.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Significant explosive eruption started at 14:16 AKDT and continues.","sentUtc":"2017-05-28","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-05-28T14:43:44-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-05-28T14:43:44-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-05-28T14:43:44-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170517\/1908Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo further ash emissions have occurred at Bogoslof Volcano since the explosion on Tuesday, 16 May at 22:32 AKDT (06:32 UTC) and seismicity remains low.  We are therefore lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH.  Additional ash-producing eruptions could occur at any time, however, with no detectable precursors.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\npavel@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No new activity since eruption at 06:32 UTC.  Color code lowered to ORANGE. ","sentUtc":"2017-05-17","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-05-17T10:53:51-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-05-17T10:53:51-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-05-17T10:53:51-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170517\/0726Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe explosive eruption that started today, May 16, around 22:32 AKST (May 17 06:32 UTC) is continuing. A pilot reported that the eruption has produced an ash cloud as high as 34,000 ft asl, and the Worldwide Lightning Location Network has detected lightning associated with the cloud. Winds are currently to the south. Ash has not yet been detected in satellite.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWe are raising the Aviation Color Code to RED and Volcano Alert Level to WARNING. \u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPIREP to 34,000 ft asl\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Ewinds are to the south\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPlease see the NWS AAWU at http:\/\/www.weather.gov\/aawu\/sigmets for updated information on aviation warning messages.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\npavel@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosive eruption starting at 22:32 AKDT produced ash cloud as high as 34,000 ft asl.","sentUtc":"2017-05-17","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-05-16T23:04:40-08:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-05-16T23:04:40-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-05-16T23:04:40-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170517\/0700Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn increase in seismic and infrasound activity from Bogoslof was detected from stations on nearby islands starting today, May 16, around 22:32 AKST (May 17 06:32 UTC) and is continuing. We have no satellite observations yet, but the infrasound signal suggests an explosive eruption has likely begun. No lightning has been detected. AVO is raising the Aviation Color Code for Bogoslof to ORANGE and the Volcano Alert Level to WATCH. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWe will provide more information as it becomes available including any information about a resulting ash cloud. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nBogolsof is not monitored by a real-time seismic network and this inhibits AVO's ability to detect unrest that may lead to an explosive eruption.  Rapid detection of an ash-producing eruption may be possible using a combination of data from seismic and infrasound networks on neighboring islands and satellite and lightning detection data.  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enot available \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Ewinds are to the south\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\npavel@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Seismic and infrasound data suggest explosive eruption started at 22:32 AKDT. ","sentUtc":"2017-05-17","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-05-16T22:49:42-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-05-16T22:49:42-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-05-16T22:49:42-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170424\/1943Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ERecent satellite images show a new lava dome has been extruded in the summit crater of Cleveland.  The dome began growing sometime after the most recent explosion on March 31.  Slightly elevated surface temperatures have been observed in satellite images for the past couple of weeks. The first visual indication of new dome growth was observed in satellite images on April 15 with the presence of a small (less than 10-meter-diameter) mound deep in the March 31 crater.  By April 23, this mound had grown to 45 meters in diameter.  Dome growth has occurred with no obvious detectable seismicity.  The presence of a  growing lava dome in the summit crater of Cleveland prompts AVO to raise the Aviation Color Code to ORANGE and the Volcano Alert Level to WATCH.  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano is not monitored with a full real-time seismic network and this inhibits AVO's ability to detect unrest that may lead to future activity. We are able to detect explosive activity using infrasound and limited seismic instruments on the island.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nchris@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Status of Cleveland Volcano upgraded to ORANGE\/WATCH.  ","sentUtc":"2017-04-24","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2017-04-24T11:34:35-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-04-24T11:34:35-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-04-24T11:34:35-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170419\/2023Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo new volcanic activity has been observed at Bogoslof Volcano in satellite, seismic or infrasound data since a short-lived increase in seismicity on April 15.  The last major explosive event occurred on March 8, 2017, and occasional high-spatial resolution satellite images show no significant surficial changes due to eruptive activity since that time. Based on the absence of detected activity over the past several days, AVO is lowering the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY. Bogolsof is not monitored by a real-time seismic network and this inhibits AVO's ability to detect unrest that may lead to an explosive eruption. Rapid detection, and possible forecasting, of an ash-producing eruption may be possible using a combination of data from seismic and infrasound networks on neighboring islands and satellite and lightning detection data.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGiven the lack of a local monitoring network and the unpredictability of the volcano, activity at Bogoslof could ramp up again at any time. Thus a Temporary Flight Restriction (TFR) remains in effect over the volcano for the time being. Please see http:\/\/tfr.faa.gov\/tfr2\/list.html for the status of the TFR. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Bogolsof Volcano status lowered to YELLOW\/ADVISORY due to decrease in seismicity. ","sentUtc":"2017-04-19","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-04-19T12:01:08-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-04-19T12:01:08-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-04-19T12:01:08-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170416\/0320Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn increase in earthquake activity from Bogoslof was detected from stations on nearby islands starting April 15 around 15:01 AKST \/ 23:01 UTC. At this time there has been no evidence of renewed eruptive activity from infrasound, lightning, or satellite data. Similar sequences of earthquakes have preceded some of the explosive events during the ongoing unrest. Because this uptick in seismicity increases the likelihood of future explosive activity, AVO is raising the Aviation Color Code for Bogoslof to ORANGE and the Volcano Alert Level to WATCH. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nBogolsof is not monitored by a real-time seismic network and this inhibits AVO's ability to detect unrest that may lead to an explosive eruption.  Rapid detection of an ash-producing eruption may be possible using a combination of data from seismic and infrasound networks on neighboring islands and satellite and lightning detection data.  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGiven the lack of a local monitoring network and the unpredictability of the volcano, activity at Bogoslof could ramp up again at any time. Thus a Temporary Flight Restriction (TFR) remains in effect over the volcano for the time being. Please see http:\/\/tfr.faa.gov\/tfr2\/list.html for the status of the TFR. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EDave Schneider, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ndjschneider@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI jfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Bogolsof Volcano status raised to ORANGE\/WATCH due to increase in earthquake activity. ","sentUtc":"2017-04-16","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-04-15T18:56:54-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-04-15T18:56:54-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-04-15T18:56:54-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170405\/1942Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo new volcanic activity has been observed at Bogoslof Volcano in satellite, seismic or infrasound data since a small explosion was detected on March 13.   The last major explosive event occurred on March 8, 2017, and occasional high-spatial resolution satellite images show no significant surficial changes due to eruptive activity since that time. Based on the absence of detected activity over the past three weeks, AVO is lowering the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nBogolsof is not monitored by a real-time seismic network and this inhibits AVO's ability to detect unrest that may lead to an explosive eruption.  Rapid detection of an ash-producing eruption may be possible using a combination of data from seismic and infrasound networks on neighboring islands and satellite and lightning detection data.  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EGiven the lack of a local monitoring network and the unpredictability of the volcano, activity at Bogoslof could ramp up again at any time. Thus a Temporary Flight Restriction (TFR) remains in effect over the volcano for the time being. Please see http:\/\/tfr.faa.gov\/tfr2\/list.html for the status of the TFR. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Bogolsof Volcano status lowered to YELLOW\/ADVISORY. ","sentUtc":"2017-04-05","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-04-03T12:20:32-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-04-03T12:20:32-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-04-03T12:20:32-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170405\/1941Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo activity has been observed at Cleveland Volcano since an explosion was detected in seismic and infrasound data on March 24.  Recent satellite images show no significant changes to the summit lava dome or crater since late February to early March.  Based on seismic levels remaining low and no observations of continued activity, AVO is lowering the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano is not monitored with a full real-time seismic network and this inhibits AVO's ability to detect unrest that may lead to future activity. We are able to detect explosive activity using infrasound and limited seismic instruments on the island.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Status of Cleveland Volcano lowered to YELLOW\/ADVISORY.  ","sentUtc":"2017-04-05","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2017-04-03T12:56:01-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-04-03T12:56:01-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-04-03T12:56:01-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170324\/1924Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA small explosion was detected at Cleveland volcano at 08:15 AKST (16:15 UTC) today in both seismic and infrasound (pressure sensor) data.  As a result AVO is increasing the Aviation Color Code to Orange and the Alert Level to Watch.  This event was short lived and similar, if not smaller, than recent explosions at this volcano.  Cloud cover to 30,000 feet above sea level is obscuring observations of the volcano by satellite views and no ash cloud has been observed. The ash cloud that was likely generated during this explosion has probably dissipated at this time and was likely not above 20,000 feet above sea level.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCleveland volcano is not monitored with a real-time seismic network and this inhibits AVO's ability to detect unrest that may lead to future activity.  We are able to detect explosive activity using infrasound and seismic instruments on the island.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo volcanic cloud observed.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ELikely below 20,000 feet above sea level and has likely dissipated at this time.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"small explosion detected this morning.","sentUtc":"2017-03-24","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2017-03-24T11:00:30-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-03-24T11:00:30-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-03-24T11:00:30-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170313\/1214Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA short-duration eruption began at Bogoslof volcano at 11:31 UTC on March 13 (3:31 AKDT on March 13) and ended 12 minutes later.  An ash cloud has been detected in satellite data, and volcanic ash emissions are also likely occurring based on infrasound data.  Winds are towards the south-southwest. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWe are evaluating the magnitude of this eruptive episode. Although the episode appears to be over and of short duration, additional activity is possible. The Aviation Color Code remains at ORANGE and the Volcano Alert Level remains at WATCH at present. AVO is evaluating all data sources and will update this report as more information becomes available.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAsh cloud detected. NWS eruption SIGMET issued to 18,000 ft asl.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe National Weather Service Alaska Aviation Weather Unit has issued an eruption SIGMET warning for aviation up to 18,000 ft above sea level. This may be revised as new information becomes available. Please see the NWS AAWU at http:\/\/www.weather.gov\/aawu\/sigmets for updated information on aviation warning messages.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EDave Schneider, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ndjschneider@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Short-duration eruption, based on seismic data. Ash detected in satellite images.","sentUtc":"2017-03-13","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-03-13T03:47:18-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-03-13T03:47:18-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-03-13T03:47:18-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170309\/1701Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo further ash emissions have occurred at Bogoslof Volcano since the three-hour-long eruption that began on Tuesday, 7 March at 22:36 AKST (07:36 UTC March 8) and seismicity remains low.  We are therefore lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH.  Additional ash-producing eruptions could occur at any time, however, with no detectable precursors.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No detected activity since last eruption ended March 8. Color code lowered to ORANGE. ","sentUtc":"2017-03-09","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-03-09T07:35:06-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-03-09T07:35:06-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-03-09T07:35:06-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170308\/2044Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo major activity has been observed at Cleveland Volcano since satellite data confirmed the eruption of a small volume lava dome within the summit crater over a month ago. Weakly elevated surface temperatures have been detected in satellite data in recent weeks that are consistent with cooling lava and are not considered to be indicative of new activity. Steaming from the summit crater has also been observed. Satellite images collected over the past few weeks show the small lava dome is not growing in size. Based on seismic levels remaining low and no observations nor reports of continued eruptive activity, AVO is reducing the Aviation color code to YELLOW and the Volcano Alert Level to ADVISORY. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCleveland volcano is not monitored with a real-time seismic network and this inhibits AVO's ability to detect unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of satellite, infrasound, lightning data and local observations. AVO is monitoring the unrest at Cleveland volcano as closely as possible and will release additional information if or when it becomes available. \u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo volcanic clouds observed.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo cloud observed.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western portion of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. The volcano is located about 75 km (45 mi) west of the community of Nikolski, and 1500 km (940 mi) southwest of Anchorage. The most recent significant period of eruption began in February, 2001 and produced 3 explosive events that generated ash clouds as high as 39,000 ft above sea level. The 2001 eruption also produced a lava flow and hot avalanche that reached the sea. Since then, Cleveland has been intermittently active producing small lava flows, often followed by explosions that generate small ash clouds generally below 20,000 ft above sea level.  These explosions also launch debris onto the slopes of the cone producing hot pyroclastic avalanches and lahars that sometimes reach the coastline.  \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Status of Cleveland Volcano lowered to YELLOW\/ADVISORY","sentUtc":"2017-03-08","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2017-03-08T10:50:20-09:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-03-08T10:50:20-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-03-08T10:50:20-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170308\/0922Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA significant explosive eruption that began at Bogoslof volcano at 7:36 UTC on March 8 (10:36 pm AKST on March 7) is continuing, as indicated in seismic, lightning, and infrasound data. The ash cloud from the eruption has been observed to 35,000 feet in satellite images and is heading east. The current Aviation Color Code is RED and Alert level is WARNING.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe National Weather Service is issuing a Special Weather Statement for trace amounts (less than 1 mm) of ashfall on Unalaska Island including the community of Dutch Harbor\/Unalaska. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO is evaluating all data sources and will update this report as more information becomes available.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EObserved up to 35,000 ft.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EHeight may be revised as new satellite images are received.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe National Weather Service Alaska Aviation Weather Unit has issued an eruption SIGMET warning for aviation up to 35,000 ft above sea level. This may be revised as new information becomes available. Please see the NWS AAWU at http:\/\/www.weather.gov\/aawu\/sigmets for updated information on aviation warning messages.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Significant explosive eruption continuing","sentUtc":"2017-03-08","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-03-07T23:57:42-09:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-03-07T23:57:42-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-03-07T23:57:42-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170308\/0840Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA significant explosive eruption began at Bogoslof volcano at 7:36 UTC on March 8 (10:36 pm AKST on March 7) as indicated in seismic, lightning, and infrasound data. Although at this time there have been no satellite images confirming eruptive activity, these monitoring data strongly suggest that significant ash emissions have occurred. Thus, AVO is raising the Aviation Color Code to RED and Alert level to WARNING.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO is evaluating all data sources and will update this report as more information becomes available.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone observed yet. Preliminary eruption SIGMET issued by NWS up to 20,000 ft asl.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enot available\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe National Weather Service Alaska Aviation Weather Unit has issued an eruption SIGMET warning for aviation up to 20,000 ft above sea level. This may be revised as new information becomes available. Please see the NWS AAWU at http:\/\/www.weather.gov\/aawu\/sigmets for updated information on aviation warning messages.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Significant explosive eruption and increase to Aviation Color Code and Alert Level.","sentUtc":"2017-03-08","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-03-07T23:34:16-09:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-03-07T23:34:16-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-03-07T23:34:16-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170308\/0825Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn eruption began at Bogoslof volcano at 7:36 UTC on March 8  (10:36 pm AKST on March 7) and is continuing.  No ash cloud has been detected as of yet in satellite data, but volcanic ash emissions are likely occurring based on lightning and infrasound data.  Winds are towards the east. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWe are evaluating the magnitude of this eruptive episode. The Aviation Color Code remains at ORANGE and the Volcano Alert Level remains at WATCH at present. AVO is evaluating all data sources and will update this report as more information becomes available.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone detected yet. NWS SIGMET issued to 20,000 ft\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe National Weather Service Alaska Aviation Weather Unit has issued an eruption SIGMET warning for aviation up to 20,00 ft above sea level. This may be revised as new information becomes available. Please see the NWS AAWU at http:\/\/www.weather.gov\/aawu\/sigmets for updated information on aviation warning messages.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Eruption in progress, based on seismic data. No ash detected yet in satellite images.","sentUtc":"2017-03-08","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-03-07T22:59:25-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-03-07T22:59:25-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-03-07T22:59:25-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170221\/2137Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo further ash emissions have occurred at Bogoslof Volcano since the explosion on Sunday, 19 February at 17:45 AKST (February 20 02:45 UTC) and seismicity remains low.  We are therefore lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH.  Additional ash-producing eruptions could occur at any time, however, with no detectable precursors.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No new activity since eruption at 02:45 Feb 20 UTC. Color code lowered to ORANGE.","sentUtc":"2017-02-21","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-02-21T11:57:06-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-02-21T11:57:06-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-02-21T11:57:06-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170220\/0307Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA significant explosive eruption began at Bogoslof volcano at 02:08 UTC on 20 February (17:08 AKST on 19 February). Seismic and infrasound data show a series of short-lived explosive pulses through 02:45 UTC; seismicity has been quiet since then. Recent satellite images show a cloud as high as 25,000 ft asl. Thus, AVO is raising the Aviation Color Code to RED and Alert level to WARNING for Bogoslof volcano. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWinds are carrying the cloud from Bogoslof to the southeast, towards Unalaska Island. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E25,000 ft asl estimated by satellite\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECloud moving towards southeast\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe SIGMET warning message for aviation, issued by the National Weather Service Alaska Aviation Weather Unit, currently is in effect up to 25,000 ft above sea level. Status of the ash cloud forecast can be found at their website at http:\/\/aawu.arh.noaa.gov\/\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSee http:\/\/www.weather.gov\/afc\/ for details on ash fall forecasts from the National Weather Service. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Significant explosive eruption and increase to Aviation Color Code RED.","sentUtc":"2017-02-20","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-02-19T17:49:06-09:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-02-19T17:49:06-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-02-19T17:49:06-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170220\/0225Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn explosive eruption began at Bogoslof volcano at 02:08 20 February UTC (17:08 19 February AKST) as indicated in seismic and infrasound data. At this time there have been no satellite images received to indicate size of volcanic plume. The Aviation Color Code remains at ORANGE, but we will continue to monitor data closely and provide updates as necessary. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone observed yet \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot available\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe National Weather Service Alaska Aviation Weather Unit has issued an eruption SIGMET warning for aviation up to XX,XXX ft above sea level. This may be revised as new information becomes available. Please see the NWS AAWU at http:\/\/www.weather.gov\/aawu\/sigmets for updated information on aviation warning messages.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWinds at the volcano would currently carry an eruption cloud southeast towards Unalaska Island. Please see the National Weather Service for notices regarding ashfall: http:\/\/www.weather.gov\/afc\/ \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosive eruption started at 02:08 UTC.","sentUtc":"2017-02-20","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-02-19T16:54:29-09:00","colorCode":"ORANGE","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-02-19T16:54:29-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-02-19T16:54:29-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170220\/0135Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismicity as detected on instruments located on nearby islands is elevated and increasing in intensity, suggesting that an explosive eruption is likely imminent. As of yet there is no confirmation of significant ash emissions detected by lightning, infrasound or satellite data. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe Aviation Color Code remains at ORANGE and the Volcano Alert Level remains at WATCH. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO is evaluating all data sources and will update this report as more information becomes available.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot yet observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot available\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EStatus of any ash clouds can be found at the Alaska Aviation Weather Unit website at http:\/\/aawu.arh.noaa.gov\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Increase in seismicity suggests eruption is likely imminent. ","sentUtc":"2017-02-20","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-02-19T15:12:33-09:00","colorCode":"ORANGE","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-02-19T15:12:33-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-02-19T15:12:33-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170219\/2110Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo further ash emissions have occurred at Bogoslof Volcano since the explosion on Saturday 18 February at 4:50 AKST (13:50 UTC) and seismicity remains low.  We are therefore lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH.  Additional ash-producing eruptions could occur at any time, however, with no detectable precursors.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No new activity since eruption yesterday at 13:50 UTC.  Color code lowered to ORANGE. ","sentUtc":"2017-02-19","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-02-19T11:19:02-09:00","colorCode":"ORANGE","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-02-19T11:19:02-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-02-19T11:19:02-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170218\/1439Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn explosive eruption began at Bogoslof volcano at 04:26 AKST (13:26 UTC) as indicated in seismic and lightning data. Preliminary evidence from satellite suggests the cloud is at least as high as 25,000 ft asl. Seismic data suggest that the main ash emissions lasted for several minutes and seismicity is currently low again. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO is evaluating all data sources and will update this report as more information becomes available.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAt least 25,000 ft all\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Ewinds are variable in the area\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe National Weather Service Alaska Aviation Weather Unit has issued an eruption SIGMET warning for aviation up to 25,000 ft above sea level. This may be revised as new information becomes available. Please see the NWS AAWU at http:\/\/www.weather.gov\/aawu\/sigmets for updated information on aviation warning messages.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosive eruption started at about 04:26 AKST (13:26 UTC).","sentUtc":"2017-02-18","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-02-18T05:20:00-09:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-02-18T05:20:00-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-02-18T05:20:00-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170218\/0134Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAnother short-lived explosive eruption occurred today at about 15:46 AKST (00:46 UTC) as detected in seismic and infrasound data. A volcanic cloud is visible in satellite and is as high as 25,000 ft asl. No lightning was associated with this event. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSeismicity as detected on nearby islands is back to low levels, but Bogoslof volcano remains at a heightened state of unrest and in an unpredictable condition. Additional explosions producing high-altitude volcanic clouds could occur at any time. Low-level explosive activity that is below our ability to detect in our data sources may be occurring. These low-level explosions could pose a hazard in the immediate vicinity of the volcano. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe Aviation Color Code remains at RED and the Alert Level remains at WARNING. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESIGMET to 25,000 ft asl\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EWinds are to the north\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe SIGMET warning message for aviation, issued by the National Weather Service Alaska Aviation Weather Unit, currently is in effect up to 25,000 ft above sea level. Status of the ash cloud forecast can be found at their website at http:\/\/aawu.arh.noaa.gov\/\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nNo ash fallout is expected in populated areas as winds are to the north. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":" A short-lived explosive eruption occurred today at about 15:46 AKST (00:46 UTC)","sentUtc":"2017-02-18","obs":null,"vName":"Bogoslof","vnum":"311300","noticeId":null,"colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170217\/1948Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA significant explosive eruption began at Bogoslof volcano at 18:55 UTC (09:55 AKST) today. Pulses of seismicity are continuing. Preliminary satellite data show an ash cloud, and lightning continues to be detected. Thus, AVO is raising the Aviation Color Code to RED and Alert level to WARNING for Bogoslof volcano. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWinds are from the south and will generally carry the ash cloud north over the Bering Sea. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nActivity is ongoing and additional explosive events may occur. We will provide more information about the ash cloud as it becomes available. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESIGMET to 25,000 ft asl\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECloud moving generally north\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe SIGMET warning message for aviation, issued by the National Weather Service Alaska Aviation Weather Unit currently is in effect up to 25,000 ft above sea level. Status of the ash cloud forecast can be found at their website at http:\/\/aawu.arh.noaa.gov\/\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nNo ash fallout is expected in populated areas as winds are to the north. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Significant explosive eruption and increase to Aviation Color Code RED.","sentUtc":"2017-02-17","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-02-17T10:33:20-09:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-02-17T10:33:20-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-02-17T10:33:20-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170217\/1921Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismicity as detected on instruments located on nearby islands has recently increased. Infrasound sensors on Okmok Volcano have also detected airwaves suggesting an explosive eruption has commenced. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe Aviation Color Code remains at ORANGE and the Volcano Alert Level remains at WATCH. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO is evaluating all data sources and will update this report as more information becomes available.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot available\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EStatus of any ash clouds can be found at the Alaska Aviation Weather Unit website at http:\/\/aawu.arh.noaa.gov\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Increase in seismicity and infrasound suggests eruption is occurring. ","sentUtc":"2017-02-17","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-02-17T10:11:34-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-02-17T10:11:34-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-02-17T10:11:34-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170213\/1900Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EStrong seismic activity at Bogoslof this morning from about 16:24 to 17:32 UTC (07:24 to 08:32 AKST) was detected on stations from nearby islands. Similar seismic activity has been associated with explosive eruptions that produced significant ash clouds from the volcano. Thus, AVO raised the Aviation Color Code to RED and Alert level to WARNING for Bogoslof volcano. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHowever, satellite data through 18:30 UTC (09:30 AKST) show no volcanic cloud visible about the weather cloud tops of about 10,000 ft asl. There were also no lightning strokes detected during this morning's activity.  We therefore conclude that, despite the intensity of seismic activity, a significant volcanic cloud was not produced during this event. We are thus lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAsh emissions to lower altitudes, as well as other eruptive activity, likely did occur during this morning's event, and conditions at the volcano remain unstable. Additional explosive activity could occur at any time, with little or no advance warning.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo cloud above about 10,000 ft asl\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone available\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe SIGMET warning message for aviation, issued by the National Weather Service Alaska Aviation Weather Unit, was cancelled earlier this morning. Status of the ash cloud forecast can be found at their website at http:\/\/aawu.arh.noaa.gov\/\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe National Weather Service issued a Marine Weather Statement for the area around Umnak Pass: http:\/\/www.weather.gov\/afc\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Intense seismicity from 16:24 to 17:32 UTC; no ash cloud observed above 10,000 ft asl.","sentUtc":"2017-02-13","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-02-13T09:20:00-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-02-13T09:20:00-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-02-13T09:20:00-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170213\/1654Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA significant explosive eruption began at Bogoslof volcano at about 16:24 UTC on February 13 (07:24 AKST on February 13) as indicated in seismic data. Although at this time there has been no lightning detected, nor satellite images received to confirm eruptive activity, the intensity of seismicity strongly suggests that significant ash emissions have occurred. Thus, AVO is raising the Aviation Color Code to RED and Alert level to WARNING.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO is evaluating all data sources and will update this report as more information becomes available.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone observed yet. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enot available\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPlease see the NWS AAWU at http:\/\/www.weather.gov\/aawu\/sigmets for updated information on aviation warning messages.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Significant explosive eruption and increase to Aviation Color Code RED.","sentUtc":"2017-02-13","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-02-13T07:29:37-09:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-02-13T07:29:37-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-02-13T07:29:37-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170213\/1620Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismicity as detected on instruments located on nearby islands is elevated and increasing in intensity, suggesting that an explosive eruption is likely imminent or has commenced. As of yet there is no confirmation of significant ash emissions detected by lightning, infrasound or satellite data. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe Aviation Color Code remains at ORANGE and the Volcano Alert Level remains at WATCH. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO is evaluating all data sources and will update this report as more information becomes available.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot available\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EStatus of any ash clouds can be found at the Alaska Aviation Weather Unit website at http:\/\/aawu.arh.noaa.gov\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Increase in seismicity suggests eruption may be imminent or occurring. ","sentUtc":"2017-02-13","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-02-13T07:17:49-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-02-13T07:17:49-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-02-13T07:17:49-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170208\/2013Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETakawangha  (VNUM #311090)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 52 min W 178 deg 1 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E4754 ft (1449 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe energetic earthquake swarm on Tanaga Island that began on January 23, 2017, has declined significantly and seismicity is near background levels. Therefore, AVO is lowering the Aviation Color Code to GREEN and Alert Level to NORMAL for Takawangha volcano.  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETakawangha is a remote, 1,449 m (4,754 ft)-high stratovolcano located on the northeast portion of Tanaga Island, roughly 95 km (59 miles) west of Adak in the Andreanof Islands. Takawangha's summit is mostly ice-covered, except for four young craters that have erupted ash and lava flows in the last few thousand years. Parts of Takawangha's edifice are hydrothermally altered and may be unstable, possibly leading to localized debris avalanches from its flanks. Takawangha lies across a saddle from historically active Tanaga volcano to the west. No historical eruptions are known from Takawangha; however, field work shows that recent eruptions have occurred and it is possible that historic eruptions attributed to Tanaga may instead have come from Takawangha. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Earthquake swarm has ended.","sentUtc":"2017-02-08","obs":"avo","vName":"Takawangha","vnum":"311090","noticeId":"DOI-USGS-AVO-2017-02-08T10:25:11-09:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-02-08T10:25:11-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-02-08T10:25:11-09:00","nvewsThreat":"Low Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170204\/0224Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A86\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismic tremor began at Bogoslof at 1:41 UTC on February 4  (16:42, February 3 AKST) and is continuing.   No ash cloud has been detected as of yet in satellite data, but volcanic ash emissions are likely occurring.  Winds are towards the north over the Bering Sea. We are evaluating the magnitude of this eruptive episode. The Aviation Color Code remains at ORANGE and the Volcano Alert Level remains at WATCH at present. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe National Weather Service Alaska Aviation Weather Unit has issued an eruption SIGMET warning for aviation up to 20,000 ft above sea level. This will be revised as new information becomes available. Please see the NWS AAWU at http:\/\/www.weather.gov\/aawu\/sigmets for updated information on aviation warning messages.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enone detected yet\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Seismic activity occurring. Eruption in progress. No ash detected yet in satellite images.","sentUtc":"2017-02-04","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-02-03T18:03:03-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-02-03T18:03:03-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-02-03T18:03:03-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170203\/2305Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A87\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ERecent satellite observations indicate that a new lava dome has been extruded and is partially filling the summit crater at Cleveland volcano.  The new dome is about 70 m (230 feet) in diameter and is similar in size to previous lava domes that have developed on the floor of the crater. When lava domes have developed within the summit crater, explosive activity has sometimes followed. The extrusion of the lava dome and the increased potential for explosive activity prompts AVO to  change the Aviation Color Code to ORANGE and the Volcano Alert Level to WATCH. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCleveland volcano is not monitored with a real-time seismic network and this inhibits AVO's ability to detect unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of satellite, infrasound, lightning data and local observations. AVO is monitoring the unrest at Cleveland volcano as closely as possible and will release additional information if or when it becomes available. \u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo volcanic clouds observed.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo cloud observed.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western portion of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. The volcano is located about 75 km (45 mi) west of the community of Nikolski, and 1500 km (940 mi) southwest of Anchorage. The most recent significant period of eruption began in February, 2001 and produced 3 explosive events that generated ash clouds as high as 39,000 ft above sea level. The 2001 eruption also produced a lava flow and hot avalanche that reached the sea. Since then, Cleveland has been intermittently active producing small lava flows, often followed by explosions that generate small ash clouds generally below 20,000 ft above sea level.  These explosions also launch debris onto the slopes of the cone producing hot pyroclastic avalanches and lahars that sometimes reach the coastline.  \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Status of Cleveland Volcano elevated to ORANGE\/WATCH","sentUtc":"2017-02-03","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2017-02-03T14:29:16-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-02-03T14:29:16-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-02-03T14:29:16-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170202\/2051Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A85\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe level of unrest at Pavlof has gradually decreased to background levels over the past several months. Therefore we are lowering the Aviation Color Code to GREEN and the Alert Level to NORMAL. No activity has been observed in satellite data since January 8 when weakly elevated surface temperatures were detected. Seismic levels are considered to be at background levels. Occasional, small, low frequency events continue to be seen in seismic data and are consistent with an open degassing system. Low-level steam and gas plumes from the summit are likely to be seen when meteorological conditions are favorable.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof Volcano is a snow- and ice-covered stratovolcano located on the southwestern end of the Alaska Peninsula about 953 km (592 mi) southwest of Anchorage. The volcano is about 7 km (4.4 mi) in diameter and has active vents on the north and east sides close to the summit. With over 40 historic eruptions, it is one of the most consistently active volcanoes in the Aleutian arc. Eruptive activity is generally characterized by sporadic Strombolian lava fountaining continuing for a several-month period. Ash plumes as high as 49,000 ft ASL have been generated by past eruptions of Pavlof, and during the March 2016 eruption, ash plumes as high as 40,000 feet above sea level were generated and the ash was tracked in satellite data as distant as eastern Canada. The nearest community, Cold Bay, is located 60 km (37 miles) to the southwest of Pavlof. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Eruption at Pavlof has ended","sentUtc":"2017-02-02","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2017-02-02T10:39:18-09:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-02-02T10:39:18-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-02-02T10:39:18-09:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170201\/2006Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A84\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo new volcanic emissions have been detected from Bogoslof Volcano since the activity that began at 5:20 UTC, January 31 (20:20 AKST, January 30).   No detectable activity has been observed in recent seismic, infrasound or lightning data.  AVO is reducing the Aviation Color code to ORANGE and the Alert Level to WATCH.   High winds in the region are being seen on seismic and infrasound stations making it difficult to detect smaller signals from Bogoslof.  Significant ash-producing explosions could occur at any time, with no detectable precursors. Low-level activity below our detection limit is possible and may present a hazard in the immediate vicinity of the island.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN\/A\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosive emissions from Bogoslof have ceased. ","sentUtc":"2017-02-01","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-02-01T09:42:42-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-02-01T09:42:42-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-02-01T09:42:42-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170131\/0725Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A82\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EBursts of explosive activity that began at 5:20 UTC are continuing and intensifying. More than 10 short-duration explosions have been detected in seismic, infrasound and lightning data. Several discrete volcanic clouds have been observed in satellite data. The intensity of these events are increasing, as is the altitude of the volcanic clouds. Thus, AVO is raising the Aviation Color Code to RED and Alert level to Warning for Bogoslof volcano.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSatellite data through 07:00 UTC shows a volcanic cloud with an estimated altitude of 20,000 ft asl moving towards the east.  Activity is ongoing and additional explosive events may occur. A status update will be issued as conditions warrant. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E20,000\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMoving towards the east\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPlease reference the National Weather Service Alaska Aviation Weather Unit for current information on the volcanic cloud movement. http:\/\/aawu.arh.noaa.gov\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosive emission from Bogoslof intensify. Estimated altitude to at least 20,000 ft asl.","sentUtc":"2017-01-31","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-30T21:22:14-09:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-30T21:22:14-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-30T21:22:14-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170131\/0617Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A81\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeveral short bursts of activity have been detected in seismic data beginning at 5:20 and at 6:08 UTC.   An infrasound  signal accompanied the first event indicating an explosive emission from Bogoslof.  An eruption cloud has been observed in satellite data at 5:30 UTC to an altitude of 20,000 ft above sea level by the National Weather Service. We are evaluating the cloud height as new data comes in and will update if needed. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe Aviation Color Code remains at ORANGE and the Volcano Alert Level at WATCH.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E20,000\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Einitial estimate\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPlease reference the National Weather Service Alaska Aviation Weather Unit for current information on the volcanic cloud movement. http:\/\/aawu.arh.noaa.gov\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosive emission from Bogoslof detected. Estimated altitude of 20,000 ft asl.","sentUtc":"2017-01-31","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-30T20:45:56-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-30T20:45:56-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-30T20:45:56-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170128\/0043Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A53\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo further ash emissions have occurred at Bogoslof volcano since the explosion today at 08:24 AKST (17:24 UTC). No detectable activity observed in seismic, infrasound or lightning data. We are therefore lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH. Significant ash-producing explosions could occur at any time, with no detectable precursors. Low-level activity below our detection limit is possible and may present a hazard in the immediate vicinity of the island.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe volcanic cloud from the eruption this morning has dissipated and the SIGMET aviation warning message that is issued by the National Weather Service expired today at 11:15 AKST (2215 UTC) \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enone observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF \u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Aviation Color Code and Volcano Alert Level reduced to Orange\/Watch.","sentUtc":"2017-01-28","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-27T15:35:16-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-27T15:35:16-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-27T15:35:16-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170127\/1831Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A27\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ELightning and seismicity increase indicate a significant explosive eruption began at 08:24 AKST (17:24 UTC). We are thus raising the color code to RED and alert level to WARNING.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSatellite data suggests volcanic cloud may be as high as 25,000 ft asl. The current eruption SIGMET issued by the National Weather Service is up to 30,000 ft asl, but may be updated. We are actively evaluating data sources and will provide an update as necessary.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E25,000 ft asl from satellite data\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESIGMET currently to 30,000 ft asl\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPlease refer to the NWS Alaska Aviation Weather unit for updated information on the volcanic cloud forecast.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF \u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Lightning and seismicity indicate explosive eruption began at began at 08:24 AKST (17:24 UTC)","sentUtc":"2017-01-27","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-26T06:58:03-09:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-26T06:58:03-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-26T06:58:03-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170127\/1737Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A46\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn increase in seismicity at Bogoslof began at 7:47 AKST (16:47 UTC) suggests that an explosive event likely underway or imminent. As of yet, there are no additional indications of eruptive activity in satellite, lightning or infrasound data. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAt present, the Aviation Color Code remains at ORANGE and the Alert Level at Watch.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enone observed yet\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF \u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Seismic activity suggests that an explosive eruption is likely underway or imminent. ","sentUtc":"2017-01-27","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-27T08:25:45-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-27T08:25:45-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-27T08:25:45-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170127\/0250Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A44\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo further ash emissions have occurred at Bogoslof Volcano since the explosion that began today at 06:50 AKST (15:50 UTC). The volcanic ash cloud from that explosion has dissipated and the SIGMET warning for aviation (issued by the National Weather Service) was cancelled today at 13:36 AKST (22:36 UTC). No detectable activity observed in seismic, infrasound or lightning data. We are therefore lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH. Additional ash-producing eruptions could occur at any time, however, with no detectable precursors. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enone observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF \u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Reducing color code and alert level. No further ash emissions detected since this morning.","sentUtc":"2017-01-27","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-26T17:40:51-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-26T17:40:51-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-26T17:40:51-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170126\/1616Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A28\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ELightning and seismicity increase indicate an explosive eruption began at 06:50 AKST (15:50 UTC). A larger burst of seismicity occurred at 07:06 AKST (16:06 UTC). We do not yet have information on volcanic cloud height, but comparison to seismicity from previous events suggests that this event may be similarly energetic. We are thus raising the color code to RED and alert level to WARNING. We are still evaluating data and will provide an update as necessary.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nLower level winds (below 10,000 ft asl) are currently to the southeast and to the northeast at higher altitudes. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enone observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EStatus of the ash cloud can be found at the Alaska Aviation Weather Unit website at http:\/\/aawu.arh.noaa.gov\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF \u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Lightning and seismicity indicate explosive eruption began at 06:50 AKST (15:50 UTC).","sentUtc":"2017-01-26","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-26T07:10:26-09:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-26T07:10:26-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-26T07:10:26-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170126\/1117Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A78\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn increase in seismicity at about 01:34 AKST (10:24 UTC), as detected on neighboring islands, suggests that an explosive eruption may be imminent. We have detected no lightning nor seen any activity in recent satellite images. We will provide more information as it becomes available. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enone observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF \u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Increase in seismicity suggests eruption imminent or low level eruption occurring.","sentUtc":"2017-01-26","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-26T02:06:40-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-26T02:06:40-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-26T02:06:40-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170125\/0158Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A72\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo further ash emissions have occurred at Bogoslof Volcano since the explosion today at 04:53 AKST (13:53 UTC). No detectable activity observed in seismic, infrasound or lightning data.  We are therefore lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH. Additional ash-producing eruptions could occur at any time, however, with no detectable precursors. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enone observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe volcanic cloud from the eruption this morning has dissipated and the SIGMET aviation warning message that is issued by the National Weather Service expired today at 11:06 AKST (2206 UC)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No further explosive activity detected or observed since 04:53 AKST (13:53 UTC) today. ","sentUtc":"2017-01-25","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-24T16:04:34-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-24T16:04:34-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-24T16:04:34-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170124\/1846Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETakawangha  (VNUM #311090)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A71\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 52 min W 178 deg 1 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E4754 ft (1449 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn energetic earthquake swarm on Tanaga Island started yesterday, January 23, and is continuing.  The earthquakes locate  6 to 7 km ESE of Takawangha Volcano.  This activity may be due to brittle failure in the surrounding rock caused by magma movement.  AVO is therefore raising the Aviation Color Code to Yellow and Alert Level to Advisory for Takawangha Volcano.  No eruptive activity has been detected in satellite data.   \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETakawangha is a remote, 1,449 m (4,754 ft)-high stratovolcano located on the northeast portion of Tanaga Island, roughly 95 km (59 miles) west of Adak in the Andreanof Islands. Takawangha's summit is mostly ice-covered, except for four young craters that have erupted ash and lava flows in the last few thousand years. Parts of Takawangha's edifice are hydrothermally altered and may be unstable, possibly leading to localized debris avalanches from its flanks. Takawangha lies across a saddle from historically active Tanaga volcano to the west. No historical eruptions are known from Takawangha; however, field work shows that recent eruptions have occurred and it is possible that historic eruptions attributed to Tanaga may instead have come from Takawangha. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Energetic earthquake swarm detected.  ","sentUtc":"2017-01-24","obs":"avo","vName":"Takawangha","vnum":"311090","noticeId":"DOI-USGS-AVO-2017-01-24T09:04:50-09:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-24T09:04:50-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-24T09:04:50-09:00","nvewsThreat":"Low Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170124\/1415Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A69\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EFollowing a period of increasing seismicity, an explosive eruption started at 04:53 AKST (13:53 UTC) this morning as shown in seismic data and by lightning detection. We have not yet observed a volcanic cloud in satellite, but based on recent events with similar seismicity and lightning, we are raising the Aviation Color Code to RED and Alert Level to Warning. \u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enot yet observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Ewinds to the east\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EStatus of the ash cloud can be found at the Alaska Aviation Weather Unit website at http:\/\/aawu.arh.noaa.gov\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosive eruption at 04:53 AKST confirmed by seismic data and lightning. ","sentUtc":"2017-01-24","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-24T05:01:35-09:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-24T05:01:35-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-24T05:01:35-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170123\/2221Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A65\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo further ash emissions have occurred at Bogoslof Volcano since the explosion on Sunday, 22 January 2017 at 14:09 AKST (23:09 UTC). Seismic data flow, which had been interrupted by severe weather, has been restored. Seismicity remains low. We are therefore lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH. Additional ash-producing eruptions could occur at any time, however, with no detectable precursors.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enone observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No further explosive activity detected or observed since Sunday 22 January 2017.","sentUtc":"2017-01-23","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-23T13:11:26-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-23T13:11:26-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-23T13:11:26-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170122\/2349Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A64\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe eruption today around 14:09 AKST (23:09 UTC), first detected by lightning, has produced a volcanic cloud seen in satellite images moving north of Bogoslof and reaching as high as 30,000 ft asl. We are raising the Aviation Color Code to RED and the Volcano Alert Level to WARNING. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHigh winds due to a storm in the area are hindering our ability to detect the eruption in seismic data. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E30,000 ft asl\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enorth of volcano\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EStatus of the ash cloud can be found at the Alaska Aviation Weather Unit website at http:\/\/aawu.arh.noaa.gov\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosive eruption confirmed. Volcanic cloud to 30,000 ft asl north of volcano in satellite. ","sentUtc":"2017-01-22","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-22T14:44:45-09:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-22T14:44:45-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-22T14:44:45-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170122\/2331Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A62\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeveral lightning strikes north of Bogoslof suggest that an eruption occurred around 14:09 AKST (23:09 UTC). High winds due to a storm in the area are hindering our ability to detect the eruption in seismic data. No volcanic cloud visible in satellite data at this time. We will put out more information as it becomes available. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO has no ground-based volcano monitoring equipment on Bogoslof volcano. We continue to monitor satellite images, data from distant seismic and infrasound instruments, and information from the Worldwide Lightning Location Network for indications of significant activity. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enot available\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enot available\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EStatus of the ash cloud can be found at the Alaska Aviation Weather Unit website at http:\/\/aawu.arh.noaa.gov\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Lightning strikes around Bogoslof suggest eruption around 14:09 AKST (23:09 UTC)","sentUtc":"2017-01-22","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-22T14:18:40-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-22T14:18:40-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-22T14:18:40-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170121\/2141Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A52\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo further ash emissions have occurred at Bogoslof Volcano since the explosion on Friday, 20 January at 13:17 AKST (22:17 UTC) and seismicity remains low.  We are therefore lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH.  Additional ash-producing eruptions could occur at any time, however, with no detectable precursors.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No new actvity since eruption at 22:17 UTC.  Color code lowered to ORANGE. ","sentUtc":"2017-01-21","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-21T12:33:46-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-21T12:33:46-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-21T12:33:46-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170120\/2230Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A47\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EExplosive eruption of Bogoslof confirmed, starting at approximately 13:17 AKST (22:17 UTC) based on seismic data and lightning detected from the World Wide Lightning Location Network. A volcanic plume is not yet visible in satellite data. Winds are currently to the southeast. More information to follow. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWe are raising the Aviation Color Code to RED and the Alert Level to WARNING. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO has no ground-based volcano monitoring equipment on Bogoslof volcano. We continue to monitor satellite images, data from distant seismic and infrasound instruments, and information from the Worldwide Lightning Location Network for indications of significant activity. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enot available\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enot available\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EStatus of the ash cloud can be found at the Alaska Aviation Weather Unit website at http:\/\/aawu.arh.noaa.gov\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosive eruption occurred at 13:17 AKST (22:17 UTC)","sentUtc":"2017-01-20","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-20T13:20:54-09:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-20T13:20:54-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-20T13:20:54-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170120\/2210Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A45\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn increase in seismicity starting at about 13:00 AKST (22:00 UTC) suggests an explosive eruption of Bogoslof may be imminent. We will issue more information as it becomes available. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enot observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enot available\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EStatus of the ash cloud can be found at the Alaska Aviation Weather Unit website at http:\/\/aawu.arh.noaa.gov\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Increase in seismicity suggests explosive eruption may be imminent. ","sentUtc":"2017-01-20","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-20T12:45:19-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-20T12:45:19-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-20T12:45:19-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170119\/2148Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A40\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo further ash emissions have occurred at Bogoslof Volcano since the explosion on Wednesday, 18 January at 13:20 AKST (22:20 UTC) and seismicity remains low.  We are therefore lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH.  Additional ash-producing eruptions could occur at any time, however, with no detectable precursors.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No new actvity since eruption at 22:20 UTC.  Color code lowered to ORANGE. ","sentUtc":"2017-01-19","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-19T12:35:25-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-19T12:35:25-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-19T12:35:25-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170118\/2259Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A35\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EExplosive eruption of Bogoslof confirmed, starting at approximately 13:20 AKST (22:20 UTC). Ash cloud is at least as high as 31,000 ft asl as noted in pilot reports. Volcanic cloud observed in satellite images generally moving to northeast. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWe are raising the Aviation Color Code to RED and the Alert Level to WARNING. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO has no ground-based volcano monitoring equipment on Bogoslof volcano. We continue to monitor satellite images, data from distant seismic and infrasound instruments, and information from the Worldwide Lightning Location Network for indications of significant activity. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Eat least 31,000 ft asl\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enot available\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EStatus of the ash cloud can be found at the Alaska Aviation Weather Unit website at http:\/\/aawu.arh.noaa.gov\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosive eruption occurred. Volcanic cloud to at least 31,000 ft asl as observed by pilots.","sentUtc":"2017-01-18","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-18T13:51:08-09:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-18T13:51:08-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-18T13:51:08-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170118\/2215Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A33\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn increase in seismicity starting at about 13:00 AKST (22:00 UTC) suggests an explosive eruption of Bogoslof may be imminent. We will issue more information as it becomes available. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enot observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enot available\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EStatus of the ash cloud can be found at the Alaska Aviation Weather Unit website at http:\/\/aawu.arh.noaa.gov\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Increase in seismicity suggests explosive eruption imminent. ","sentUtc":"2017-01-18","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-18T13:09:43-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-18T13:09:43-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-18T13:09:43-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170117\/1756Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A22\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EIncreased seismic activity over the past several hours indicates that minor explosive activity is occurring at Bogoslof. The level of activity is variable, with the most energetic events observed around 1500 UTC and 1640 UTC (4:00 and 7:40 am AKST). Minor emissions of steam and minor amounts of volcanic ash observed in satellite data around 1500 and 1730 UTC. These events were too small to generate detectable lightning or infrasound (pressure) signals. The National Weather Service has estimated a maximum altitude for these small clouds at 15,000 ft above sea level. Satellite data showed that they dissipated quickly. The volcano remains restless and additional explosive events could occur with little warning.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E15,000 ft asl (maximum)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMinor emissions visible in satellite data\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EStatus of the ash cloud can be found at the Alaska Aviation Weather Unit website at http:\/\/aawu.arh.noaa.gov\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Increase in seismicity suggests minor explosive eruption occurring. ","sentUtc":"2017-01-17","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-17T08:43:31-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-17T08:43:31-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-17T08:43:31-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170115\/0650Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A19\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismicity increased starting at about 21:26 AKST (06:26 Jan 15 UTC) suggesting an explosive eruption of Bogoslof is likely occurring. We will issue more information as it becomes available. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enot observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enot available\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EStatus of the ash cloud can be found at the Alaska Aviation Weather Unit website at http:\/\/aawu.arh.noaa.gov\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJanet Schaefer, Acting Coordinating Scientist, DGGS\u003Cbr \/\u003E\r\njanet.schaefer@alaska.gov (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Increase in seismicity suggests explosive eruption occurring. ","sentUtc":"2017-01-15","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-14T21:44:28-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-14T21:44:28-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-14T21:44:28-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170112\/2235Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A18\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA second explosive event has been detected at Bogoslof volcano.  An abrupt increase in seismicity began at about 21:35 UTC (12:35 AKST).  Both events have been observed by pilots. The first event at 20:23 UTC produced an eruption cloud to 18,000 ft asl. The estimated height of the second event from 21:35 UTC was 14,500 ft asl.  Neither eruption cloud has been visible yet in subsequent satellite data.  The altitude of the meteorological cloud deck is variable from about 10,000 ft to 12,000 ft. Additional ash-producing eruptions may occur at any time with limited precursory unrest and little warning. AVO is monitoring the volcano closely and will provide additional information if and when it becomes available.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETwo events: First 18,000 ft. Second 14,500 ft asl\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EHeight from pilot reports. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJanet Schaefer, Acting Coordinating Scientist, DGGS\u003Cbr \/\u003E\r\njanet.schaefer@alaska.gov (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Second explsoive event. Eruption cloud to 14,500 from PIREP.","sentUtc":"2017-01-12","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-12T13:08:22-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-12T13:08:22-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-12T13:08:22-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170112\/2048Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A17\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe level of seismic activity at Bogoslof volcano increased abruptly at about 20:23 (11:23 AKST) and persisted at a high level until about 20:29 UTC (11:29 AKST). Previous increases in seismicity similar to this one have resulted in volcanic plumes as high as about 30,000 feet asl. Nothing yet has been observed in satellite data and lightning has not been detected but a plume likely has been generated. It remains possible for additional ash-producing eruptions to occur at any time with limited precursory unrest and little warning. AVO is monitoring the volcano closely and will provide additional information if and when it becomes available.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot available\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJanet Schaefer, Acting Coordinating Scientist, DGGS\u003Cbr \/\u003E\r\njanet.schaefer@alaska.gov (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Seismic activity has increased; brief eruption likely.","sentUtc":"2017-01-12","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-12T11:34:03-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-12T11:34:03-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-12T11:34:03-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170110\/1802Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A16\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe level of seismic activity at Bogoslof volcano has declined and no further volcanic emissions have occurred since the two strong eruptive pulses on January 8, 2017 at about 22:33 and 22:56 AKST (07:33 and 07:56 Jan 9 UTC). We are therefore lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH. It remains possible for additional ash-producing eruptions to occur at any time with limited precursory unrest and little warning.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot available\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJanet Schaefer, Acting Coordinating Scientist, DGGS\u003Cbr \/\u003E\r\njanet.schaefer@alaska.gov (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Seismic activity has declined; the volcano remains restless and unpredictable.","sentUtc":"2017-01-10","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-10T08:23:56-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-10T08:23:56-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-10T08:23:56-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170109\/0754Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A14\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EExplosive eruption of Bogoslof occurred starting around 22:23 AKST (07:23 Jan 9 UTC) as detected in seismic and infrasound data, with the strongest signal at about  22:31 AKST (07:31 Jan 9 UTC). Seismic signal declined around 22:38 AKST (07:38 Jan 9 UTC) but is still above background. We do not yet have any satellite images of a cloud but seismicity suggests an event at least as large as others in the recent sequence. We are raising Aviation Color Code to RED and Volcano Alert Level to WARNING. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWinds are currently out of the southeast.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot available\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EStatus of the ash cloud can be found at the Alaska Aviation Weather Unit website at http:\/\/aawu.arh.noaa.gov\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJanet Schaefer, Acting Coordinating Scientist, DGGS\u003Cbr \/\u003E\r\njanet.schaefer@alaska.gov (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosive eruption started about 22:23 AKST (07:23 Jan 9 UTC). ","sentUtc":"2017-01-09","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-08T22:37:29-09:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-08T22:37:29-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-08T22:37:29-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170109\/0732Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A13\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismicity as detected on nearby islands is elevated and increasing in intensity, suggesting that an explosive eruption is likely imminent or has commenced. No lightning has been detected nor any cloud visible in satellite. We will provide more information as it becomes available. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot available\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EStatus of any ash clouds can be found at the Alaska Aviation Weather Unit website at http:\/\/aawu.arh.noaa.gov\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJanet Schaefer, Acting Coordinating Scientist, DGGS\u003Cbr \/\u003E\r\njanet.schaefer@alaska.gov (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Increase in seismicity suggests eruption may be imminent or occurring.","sentUtc":"2017-01-09","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-08T22:16:00-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-08T22:16:00-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-08T22:16:00-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170106\/2051Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A12\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo further ash emissions have occurred at Bogoslof Volcano since the explosion on Thursday, January 5 at 13:24 AKST (22:24 UTC).  We are therefore lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH.  Additional ash-producing eruptions could occur at any time, however, with no detectable precursors.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot applicable\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJanet Schaefer, Acting Coordinating Scientist, DGGS\u003Cbr \/\u003E\r\njanet.schaefer@alaska.gov (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No new actvity since eruption at 22:24 UTC.  Color code lowered to ORANGE. ","sentUtc":"2017-01-06","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-06T11:28:37-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-06T11:28:37-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-06T11:28:37-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170105\/2242Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A11\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAVO has just detected an escalation in seismicty beginning at about 13:24 January 5 AKST (22:24 UTC)  from Bogoslof volcano.  This activity is accompanied by lightning strikes detected by the World Wide Lightning Detection Network indicating that a significant explosion has occurred.  Based on the intensity of these signals AVO is raising the Aviation Color Code to RED and Alert Level to WARNING.  More details will be provided as they become available.  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot yet available\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot yet available\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EStatus of the ash cloud can be found at the Alaska Aviation Weather Unit website at http:\/\/aawu.arh.noaa.gov\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJanet Schaefer, Acting Coordinating Scientist, DGGS\u003Cbr \/\u003E\r\njanet.schaefer@alaska.gov (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosive eruption began at 22:24 UTC.  Color code raised to RED. ","sentUtc":"2017-01-05","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-05T13:33:15-09:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-05T13:33:15-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-05T13:33:15-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170105\/2047Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A10\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo further ash emissions have occurred at Bogoslof since Tuesday, January 3 at 21:18 AKST (6:18 UTC January 4).  AVO is therefore lowering the Aviation Color Code to ORANGE and Alert Level to WATCH.  Additional ash-producing eruptions could occur at any time, however, with no detectable precursors.  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENA\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENA\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EStatus of the ash cloud can be found at the Alaska Aviation Weather Unit website at http:\/\/aawu.arh.noaa.gov\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJanet Schaefer, Acting Coordinating Scientist, DGGS\u003Cbr \/\u003E\r\njanet.schaefer@alaska.gov (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No new actvity detected.  Lowering color code to ORANGE","sentUtc":"2017-01-05","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-05T09:39:57-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-05T09:39:57-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-05T09:39:57-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170104\/0704Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A8\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismic data from nearby islands detected a volcanic signal from Bogoslof volcano starting at  21:18 AKST today (6:18 UTC Jan 4) lasting ~5 minutes and a series of lightning strikes were identified by the World Wide Lightning Location Network.  An eruption cloud as high as 33,000 ft has been detected in satellite data.  AVO is therefore raising the Aviation Color Code for Bogoslof to RED and Volcano Alert Level to Warning.   \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAs high as 33,000 asl\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Emoving north\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EStatus of the ash cloud can be found at the Alaska Aviation Weather Unit website at http:\/\/aawu.arh.noaa.gov\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJanet Schaefer, Acting Coordinating Scientist, DGGS\u003Cbr \/\u003E\r\njanet.schaefer@alaska.gov (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Ash-producing eruption at 21:18 AKST (06:18 UTC Jan 4).  Eruption cloud up to 33,000 ft.","sentUtc":"2017-01-04","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-03T21:35:43-09:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-03T21:35:43-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-03T21:35:43-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170102\/2348Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismic data from nearby islands detected a volcanic signal from Bogoslof volcano starting at 13:53 AKST (22:53 UTC) today lasting ~10 minutes. Infrasound (pressure) sensors near Cleveland volcano also detected a signal from Bogoslof, indicating an ash-producing eruption likely occurred. No lightning strikes were identified by the World Wide Lightning Location Network, and no ash-plume above the regional cloud deck (18,000 ft asl) was identified in satellite data over the past 40 minutes. The short duration of seismicity and lack of evidence for ash above the clouds in satellite data suggest this was likely a relatively minor explosion. The current Aviation Color Code remains ORANGE and Volcano Alert Level WATCH.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ELess than 18000 ft asl\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EStatus of the ash cloud can be found at the Alaska Aviation Weather Unit website at http:\/\/aawu.arh.noaa.gov\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJanet Schaefer, Acting Coordinating Scientist, DGGS\u003Cbr \/\u003E\r\njanet.schaefer@alaska.gov (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Likely ash-producing eruption began at 13:53 AKST (22:53 UTC) today","sentUtc":"2017-01-02","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2016-12-28T19:54:36-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2016-12-28T19:54:36-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2016-12-28T19:54:36-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20170101\/1932Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2017\/A1\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo further ash emissions have occurred at Bogoslof since Friday, December 30 at 22:30 AKST (07:30 UTC Dec 31). We are thus lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH. Additional ash-producing eruptions could occur at any time, however, with no detectable precursors. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO has no ground-based volcano monitoring equipment on Bogoslof volcano. We continue to monitor satellite images, information from the Worldwide Lightning Location Network pertaining to volcanic-cloud lightning, and data from seismic and infrasound instruments on other islands for indications of volcanic activity. At present, these observations should allow timely detection of additional explosive events. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003En\/a\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone detected since December 30\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJanet Schaefer, Acting Coordinating Scientist, DGGS\u003Cbr \/\u003E\r\njanet.schaefer@alaska.gov (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No explosive eruptions detected since Friday December 30. Volcano still restless. ","sentUtc":"2017-01-01","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2017-01-01T09:47:55-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2017-01-01T09:47:55-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2017-01-01T09:47:55-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20161230\/1010Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn ash-producing eruption started at 23:45 Dec 29 AKST (08:45 Dec 30 UTC) and is continuing as recorded by seismic data on nearby islands and as seen in recent satellite images. Cloud-top temperatures from satellite suggest a cloud height of around 20,000 ft asl. Regional winds are from the southwest. We are raising the Aviation Color Code to RED and the Alert Level to WARNING. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO has no ground-based volcano monitoring equipment on Bogoslof volcano. We continue to monitor satellite images, information from the Worldwide Lightning Location Network pertaining to volcanic-cloud lightning, and data from seismic and infrasound instruments on other islands for indications of volcanic activity. At present, these observations should allow timely detection of additional explosive events.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ELikely around 20,000 ft asl from satellite\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EWinds are from southwest\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EStatus of the ash cloud can be found at the Alaska Aviation Weather Unit website at http:\/\/aawu.arh.noaa.gov\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\npavel@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Ash-producing eruption started at 23:45 Dec 29 AKST (08:45 Dec 30 UTC) and is continuing.","sentUtc":"2016-12-30","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2016-12-30T00:50:00-09:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2016-12-30T00:50:00-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2016-12-30T00:50:00-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20161230\/0843Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismic data from nearby islands detected an increase in discrete volcanic seismicity from Bogoslof volcano starting at 19:00 Dec 29 AKST (04:00 UTC Dec 30) today. The activity progressed, merging into a continuous tremor sequence indicative of a possible ash-producing eruption, as was seen with the eruption on December 21. Nothing has yet been observed in satellite data and no lightning strikes associated with an ash cloud have yet been detected. We will provide additional details once they are available.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EStatus of the ash cloud can be found at the Alaska Aviation Weather Unit website at http:\/\/aawu.arh.noaa.gov\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\npavel@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Possible ash-producing eruption began at 23:30 AKST (08:30 UTC Dec 29) today","sentUtc":"2016-12-30","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2016-12-29T23:39:52-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2016-12-29T23:39:52-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2016-12-29T23:39:52-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20161229\/0404Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismic data from nearby islands detected a volcanic signal from Bogoslof volcano starting at 05:55 AKST (02:55 UTC Dec 29) today. These observations suggest an ash-producing eruption may have occurred. Nothing has yet been observed in satellite data, but the region is covered in high clouds which may prevent such observations. We will provide additional details once they are available.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EStatus of the ash cloud can be found at the Alaska Aviation Weather Unit website at http:\/\/aawu.arh.noaa.gov\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\npavel@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Likely ash-producing eruption began at 05:55 AKST (02:55 UTC Dec 29) today","sentUtc":"2016-12-29","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2016-12-27T13:51:05-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2016-12-27T13:51:05-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2016-12-27T13:51:05-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20161227\/2156Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo further ash emissions have occurred at Bogoslof since the explosive eruption yesterday at 14:05 AKST (23:05 UTC).  There has been no indication of elevated seismicity occurring from Bogoslof as measured on nearby island networks over the past 22 hours, however high winds in the region may have obscured volcanic signals over the first 15 hours of this period. While the possibility of further ash-producing eruptions is still present, we are unable to state that such activity is imminent. We are thus lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO has no ground-based volcano monitoring equipment on Bogoslof volcano. We continue to monitor satellite images, information from the Worldwide Lightning Location Network pertaining to volcanic-cloud lightning, and data from seismic and infrasound instruments on other islands for indications of volcanic activity. At present, these observations should allow timely detection of additional explosive events. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Eno cloud\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Eno cloud\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\npavel@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Unrest at Bogoslof continues, but has been low-level since yesterday's explosion.","sentUtc":"2016-12-27","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2016-12-27T12:14:22-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2016-12-27T12:14:22-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2016-12-27T12:14:22-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20161227\/0016Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn ash-producing eruption started at 14:05 AKST (23:05 UTC) today and is continuing as recorded by seismic data on nearby islands, by lightning, and as seen in recent satellite images. Cloud-top temperatures from satellite suggest a cloud height of around 30,000 ft asl. Regional winds are from the west-southwest.  We are raising the Aviation Color Code to RED and the Alert Level to WARNING. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO has no ground-based volcano monitoring equipment on Bogoslof volcano. We continue to monitor satellite images, information from the Worldwide Lightning Location Network pertaining to volcanic-cloud lightning, and data from seismic and infrasound instruments on other islands for indications of volcanic activity. At present, these observations should allow timely detection of additional explosive events. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ELikely around 30,000 ft asl from satellite\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EWinds are from west-southwest\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EStatus of the ash cloud can be found at the Alaska Aviation Weather Unit website at http:\/\/aawu.arh.noaa.gov\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\npavel@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Ash-producing eruption started at 14:05 AKST (23:05 UTC) today and is continuing.","sentUtc":"2016-12-27","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2016-12-26T14:48:28-09:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2016-12-26T14:48:28-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2016-12-26T14:48:28-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20161225\/0457Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo further ash emissions have occurred at Bogoslof since the explosive eruption yesterday at 09:30 AKST (18:30 UTC). Seismicity attributed to the ongoing volcanic unrest has been periodically visible on nearby island networks in the past day and a half, but levels have been generally low since the explosion yesterday. While the possibility of further ash-producing eruptions is still present, we are unable to state that such activity is imminent. We are thus lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO has no ground-based volcano monitoring equipment on Bogoslof volcano. We continue to monitor satellite images, information from the Worldwide Lightning Location Network pertaining to volcanic-cloud lightning, and data from seismic and infrasound instruments on other islands for indications of volcanic activity. At present, these observations should allow timely detection of additional explosive events. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enone detected\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJanet Schaefer, Acting Coordinating Scientist, DGGS\u003Cbr \/\u003E\r\njanet.schaefer@alaska.gov (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Unrest at Bogoslof continues, but has been low-level since yesterday's explosion.","sentUtc":"2016-12-25","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2016-12-24T19:15:00-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2016-12-24T19:15:00-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2016-12-24T19:15:00-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20161223\/2012Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn explosive eruption occurred at Bogoslof this morning at about 09:30 AKST (18:30 UTC).  A Coast Guard ship in the vicinity reported ash emission as well as ejection of lava and fragmental material.  The eruption cloud did not penetrate the regional cloud tops at 30,000 ft and winds are to the north-northeast.  According to the Coast Guard, ash emission subsided at about 10:37 AKST (19:37 UTC). On the basis of this information, the Aviation Color Code is raised to RED and the Alert Level to WARNING. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO has no ground-based volcano monitoring equipment on Bogoslof volcano. We will monitor satellite images and data from distant seismic and infrasound instruments for indications of significant explosive activity, although high winds in the are presently limit detection abilities. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBelow 30,000 ft\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EStatus of the ash cloud can be found at the Alaska Aviation Weather Unit website at http:\/\/aawu.arh.noaa.gov\/ \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJanet Schaefer, Acting Coordinating Scientist, DGGS\u003Cbr \/\u003E\r\njanet.schaefer@alaska.gov (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Short-lived explosive eruption","sentUtc":"2016-12-23","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2016-12-23T10:52:48-09:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2016-12-23T10:52:48-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2016-12-23T10:52:48-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20161222\/0818Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe explosive eruption that started at about 01:10 UTC 12\/22 (16:10 AKST today) was short-lived and produced an ash cloud as high as 35,000 ft asl that drifted northward.  Seismic data recorded on neighboring island networks indicates that the eruption lasted about 30 minutes after which seismicity rapidly declined and remains low. No activity has been observed in recent satellite images or infrasound data.  On the basis of this information, the Aviation Color Code is lowered to ORANGE and the Alert Level to WATCH. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO has no ground-based volcano monitoring equipment on Bogoslof volcano. We will monitor satellite images and data from distant seismic and infrasound instruments for indications of significant explosive activity. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enone detected\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EStatus of the ash cloud can be found at the Alaska Aviation Weather Unit website at http:\/\/aawu.arh.noaa.gov\/ \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJanet Schaefer, Acting Coordinating Scientist, DGGS\u003Cbr \/\u003E\r\njanet.schaefer@alaska.gov (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Seismicity declines following eruption prompting color code reduction","sentUtc":"2016-12-22","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2016-12-21T20:06:56-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2016-12-21T20:06:56-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2016-12-21T20:06:56-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20161222\/0232Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn explosive eruption started at about 01:10 UTC 12\/22 (16:10 AKST today) as seen in satellite and seismic data from neighboring islands and appeared to last for about 30 minutes. Cloud-top temperatures and wind direction suggest the cloud is as high as 35,000 ft asl, and is moving to the north. On the basis of this information, the Aviation Color Code is raised to RED and the Alert Level to WARNING. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO has no ground-based volcano monitoring equipment on Bogoslof volcano and is unable to provide a forecast of future eruptive activity. We will monitor satellite images and data from distant seismic and infrasound instruments for indications of significant explosive activity. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E35,000 ft asl\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EDrifting north\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJanet Schaefer, Acting Coordinating Scientist, DGGS\u003Cbr \/\u003E\r\njanet.schaefer@alaska.gov (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosive eruption started at about 01:10 UTC (16:10 AKST). Ash cloud to 35,000 ft asl.","sentUtc":"2016-12-22","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2016-12-21T17:06:48-09:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2016-12-21T17:06:48-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2016-12-21T17:06:48-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20161221\/0605Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe explosive eruption of Bogoslof volcano that occurred today at about 00:35 UTC (3:35 pm AKST) was short-lived, lasting approximately 30 minutes, and produced a detached ash cloud that rose to 34,000 ft (10.3 km) above sea level as reported by several pilots.  A subsequent pilot report from 01:50 UTC (4:30 pm AKST) indicated that activity had decreased and the cloud was dispersing.  The ash cloud was carried southward over the Gulf of Alaska and no ash fell on inhabited areas. No further explosions have been detected in seismic and infrasound networks indicating that the activity has subsided.  No activity is apparent in recent nighttime satellite images.   \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nOn the basis of this information, the Aviation Color Code is lowered to ORANGE and the Volcano Alert Level to WATCH. AVO has no ground-based volcano monitoring equipment on Bogoslof volcano and is unable to provide a forecast of future eruptive activity. We will monitor satellite images and data from distant seismic and infrasound instruments for indications of significant explosive activity. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSome previous eruptions of Bogoslof have lasted for weeks to months, and further explosive activity could occur with little warning.  Mariners in the area should use caution.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone currently observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJanet Schaefer, Acting Coordinating Scientist, DGGS\u003Cbr \/\u003E\r\njanet.schaefer@alaska.gov (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No further explosive eruptive activity at Bogoslof indicated in seismic and satellite data.","sentUtc":"2016-12-21","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2016-12-20T20:06:33-09:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2016-12-20T20:06:33-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2016-12-20T20:06:33-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20161221\/0220Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBogoslof  (VNUM #311300)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 55 min W 168 deg 2 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E492 ft (150 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA short-lived explosive eruption of Bogoslof volcano was reported by several pilots around 0100 UTC (4:00 pm AST). They reported a volcanic ash cloud rising to an estimated altitude of 34,000 ft (10.3 km). Satellite data show a discrete, short-lived explosion just prior to 0100 UTC that detached and drifted to the south by 0115 UTC. A subsequent pilot report from 0150 UTC indicated that activity had decreased. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nOn the basis of this information, the Aviation Color Code is increased to Red and the Volcano Alert Level to Warning. There is no ground-based volcano monitoring equipment on Bogoslof volcano so AVO is unable to provide a forecast of future eruptive activity. We will monitor satellite images and data from distant seismic and infrasound instruments for indications of significant explosive activity. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E34,000 ft\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EHeight based on pilot report.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJanet Schaefer, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njanet.schaefer@alaska.gov (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Short-lived explosive eruption reported by pilots and observed in satellite data.","sentUtc":"2016-12-21","obs":"avo","vName":"Bogoslof","vnum":"311300","noticeId":"DOI-USGS-AVO-2016-12-20T16:49:26-09:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2016-12-20T16:49:26-09:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2016-12-20T16:49:26-09:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20161104\/2027Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo activity has been observed at Cleveland following the explosion on October 24th. No change in seismicity occurred after the explosion, and there have been no infrasound (pressure sensor) signals detected. Recent satellite views indicate that the lava dome emplaced in late May was mostly destroyed in the explosion and has been replaced with a deep pit within the summit crater. Based on low seismic levels since the eruption, and no observations or reports of continued eruptive activity, AVO is reducing the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo volcanic clouds observed.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo cloud observed.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western portion of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. The volcano is located about 75 km (45 mi) west of the community of Nikolski, and 1500 km (940 mi) southwest of Anchorage. The most recent significant period of eruption began in February, 2001 and produced 3 explosive events that generated ash clouds as high as 39,000 ft above sea level. The 2001 eruption also produced a lava flow and hot avalanche that reached the sea. Since then, Cleveland has been intermittently active producing small lava flows, often followed by explosions that generate small ash clouds generally below 20,000 ft above sea level.  These explosions also launch debris onto the slopes of the cone producing hot pyroclastic avalanches and lahars that sometimes reach the coastline.  \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Status of Cleveland Volcano reduced to YELLOW\/ADVISORY","sentUtc":"2016-11-04","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2016-11-04T11:56:51-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2016-11-04T11:56:51-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2016-11-04T11:56:51-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20161024\/2219Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAVO detected an explosion at Cleveland Volcano in both infrasound (air pressure) and seismic data today (10\/24\/2016) at 13:10 AKDT (21:10 UTC).  Residents in Nikolski 45 miles (75 km) from Cleveland reported hearing the explosion.  Cloudy weather obscures the volcano in satellite images from 13:30 AKDT (21:30 UTC), however no evidence of an eruption cloud is detected above the weather cloud deck height of 28,000 ft.  The summit is currently obscured by cloudy weather in web camera images.  Previous Cleveland explosions have typically produced ash emissions.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO is raising the color code\/alert level of Cleveland Volcano from YELLOW\/ADVISORY to ORANGE\/WATCH.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo ash cloud observed above met. cloud deck of 28,000 ft.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo cloud observed.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western portion of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. The volcano is located about 75 km (45 mi) west of the community of Nikolski, and 1500 km (940 mi) southwest of Anchorage. The most recent significant period of eruption began in February, 2001 and produced 3 explosive events that generated ash clouds as high as 39,000 ft above sea level. The 2001 eruption also produced a lava flow and hot avalanche that reached the sea. Since then, Cleveland has been intermittently active producing small lava flows, often followed by explosions that generate small ash clouds generally below 20,000 ft above sea level.  These explosions also launch debris onto the slopes of the cone producing hot pyroclastic avalanches and lahars that sometimes reach the coastline.  \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Raising the color code\/alert level for Cleveland to Orange\/Watch following an explosion.","sentUtc":"2016-10-24","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2016-10-24T13:48:13-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2016-10-24T13:48:13-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2016-10-24T13:48:13-08:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20160804\/1921Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2016\/A86\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe eruptive activity that was observed intermittently since July 28 has ended or paused. Over the past several days there has been no evidence for continued ash emissions or signs of near surface magma in satellite data. As a result, AVO is lowering the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nOccasional views of the volcano in web camera images show small steam plumes at the summit. Seismic activity remains slightly above background levels. Satellite views have been obscured by clouds and intermittent partly clear views of the summit have showed only weakly elevated surface temperatures in one image on 2 August. At the present level of unrest, it is possible for activity to escalate rapidly and for ash emissions to recommence with only subtle precursory signals.  AVO will continue to monitor the volcano closely. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof Volcano is a snow- and ice-covered stratovolcano located on the southwestern end of the Alaska Peninsula about 953 km (592 mi) southwest of Anchorage. The volcano is about 7 km (4.4 mi) in diameter and has active vents on the north and east sides close to the summit. With over 40 historic eruptions, it is one of the most consistently active volcanoes in the Aleutian arc. Eruptive activity is generally characterized by sporadic Strombolian lava fountaining continuing for a several-month period. Ash plumes as high as 49,000 ft ASL have been generated by past eruptions of Pavlof, and during the March 2016 eruption, ash plumes as high as 40,000 feet above sea level were generated and the ash was tracked in satellite data as distant as eastern Canada. The nearest community, Cold Bay, is located 60 km (37 miles) to the southwest of Pavlof. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\n jfreymueller@alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Unrest has declined to near background levels","sentUtc":"2016-08-04","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2016-08-04T09:47:08-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2016-08-04T09:47:08-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2016-08-04T09:47:08-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20160728\/1955Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2016\/A82\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ELow-level eruptive activity observed in web camera and satellite images of Pavlof. Vigorous, steam-rich degassing was observed in web camera images this morning. Recent satellite images and a pilot report provide evidence of minor ash emissions associated with the degassing. Seismic tremor continues at amplitudes similar to the previous several days. This unrest prompts AVO to raise the Aviation Color Code to ORANGE and the Volcano Alert Level to WATCH.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nActivity is currently at relatively low levels. An increase in eruptive activity is possible and could occur with little or no warning. AVO will continue to monitor the volcano closely. \u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMaximum altitude currently below 15,000 ft msl\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMixture of steam and ash. Satellite discrimination of ash and PIREP of steam\/ash.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof Volcano is a snow- and ice-covered stratovolcano located on the southwestern end of the Alaska Peninsula about 953 km (592 mi) southwest of Anchorage. The volcano is about 7 km (4.4 mi) in diameter and has active vents on the north and east sides close to the summit. With over 40 historic eruptions, it is one of the most consistently active volcanoes in the Aleutian arc. Eruptive activity is generally characterized by sporadic Strombolian lava fountaining continuing for a several-month period. Ash plumes as high as 49,000 ft ASL have been generated by past eruptions of Pavlof, and during the March 2016 eruption, ash plumes as high as 40,000 feet above sea level were generated and the ash was tracked in satellite data as distant as eastern Canada. The nearest community, Cold Bay, is located 60 km (37 miles) to the southwest of Pavlof. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Paskievitch, Acting Scientist-in-Charge, USGS \u003Cbr \/\u003E\r\njpaskie@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\n jfreymueller@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Low-level eruptive activity observed in web camera and satellite images of Pavlof.","sentUtc":"2016-07-28","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2016-07-28T11:14:08-08:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2016-07-28T11:14:08-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2016-07-28T11:14:08-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20160701\/1944Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2016\/A24\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismicity at Pavlof Volcano has increased in the past 24 hours, and minor steam emissions were observed in web camera images this morning.  This unrest prompts AVO to raise the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPauses in eruptive activity lasting for weeks to months have occurred during past eruptive episodes of Pavlof Volcano, and a return to robust eruptive activity remains an ongoing possibility and could occur with little or no warning. AVO will continue to monitor the volcano closely. \u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof Volcano is a snow- and ice-covered stratovolcano located on the southwestern end of the Alaska Peninsula about 953 km (592 mi) southwest of Anchorage. The volcano is about 7 km (4.4 mi) in diameter and has active vents on the north and east sides close to the summit. With over 40 historic eruptions, it is one of the most consistently active volcanoes in the Aleutian arc. Eruptive activity is generally characterized by sporadic Strombolian lava fountaining continuing for a several-month period. Ash plumes as high as 49,000 ft ASL have been generated by past eruptions of Pavlof, and during the March 2016 eruption, ash plumes as high as 40,000 feet above sea level were generated and the ash was tracked in satellite data as distant as eastern Canada. The nearest community, Cold Bay, is located 60 km (37 miles) to the southwest of Pavlof. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS \u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI \u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Increase in seismicity, minor steam plume observed in webcamera","sentUtc":"2016-07-01","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2016-07-01T10:58:08-08:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2016-07-01T10:58:08-08:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2016-07-01T10:58:08-08:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20160617\/1901Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2016\/A13\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EPavlof Volcano has returned to its normal background state following a short eruptive period in mid May. Minor ash emissions were last observed on May 16, and since then the volcano has gradually returned to a quiescent status and now shows no signs of unrest. Seismic activity has returned to background levels and nothing unusual has been observed in satellite and web camera data since mid May. Consequently, AVO is lowering the Aviation Color Code to GREEN and the Volcano Alert Level to NORMAL.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPauses in eruptive activity lasting for weeks to months have occurred during past eruptive episodes of Pavlof Volcano. A return to robust eruptive activity remains an ongoing possibility and could occur with little or no signs of impending unrest. AVO will continue to monitor the volcano closely and planned field visits to the volcano over the next several months will restore equipment damaged by the May eruption to full operational capacity.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof Volcano is a snow- and ice-covered stratovolcano located on the southwestern end of the Alaska Peninsula about 953 km (592 mi) southwest of Anchorage. The volcano is about 7 km (4.4 mi) in diameter and has active vents on the north and east sides close to the summit. With over 40 historic eruptions, it is one of the most consistently active volcanoes in the Aleutian arc. Eruptive activity is generally characterized by sporadic Strombolian lava fountaining continuing for a several-month period. Ash plumes as high as 49,000 ft ASL have been generated by past eruptions of Pavlof, and during the March 2016 eruption, ash plumes as high as 40,000 feet above sea level were generated and the ash was tracked in satellite data as distant as eastern Canada. The nearest community, Cold Bay, is located 60 km (37 miles) to the southwest of Pavlof. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Paskievitch, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpaskie@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller,Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No signs of unrest observed in satellite or web camera images.  Seismicity remains at background. ","sentUtc":"2016-06-17","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2016-06-17T19:01:34-00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2016-06-17T19:01:34-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2016-06-17T19:01:34-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20160603\/1912Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2016\/A12\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo major activity has been observed at Cleveland Volcano since satellite data confirmed the eruption of a small volume lava dome within the summit crater on May 18.  Weakly elevated surface temperatures have been detected in satellite data from the past day that are consistent with cooling lava and are not considered to be indicative of new activity.  Seismic activity has remained low since explosions were detected in infrasound (pressure sensor) and seismic data on May 5 and May 10.  Based on seismic levels remaining low and no observations nor reports of continued eruptive activity, AVO is reducing the Aviation color code to YELLOW and the Volcano Alert Level to ADVSIORY.        \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo cloud observed.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo cloud observed.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western portion of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. The volcano is located about 75 km (45 mi) west of the community of Nikolski, and 1500 km (940 mi) southwest of Anchorage. The most recent significant period of eruption began in February, 2001 and produced 3 explosive events that generated ash clouds as high as 39,000 ft above sea level. The 2001 eruption also produced a lava flow and hot avalanche that reached the sea. Since then, Cleveland has been intermittently active producing small lava flows, often followed by explosions that generate small ash clouds generally below 20,000 ft above sea level.  These explosions also launch debris onto the slopes of the cone producing hot pyroclastic avalanches and lahars that sometimes reach the coastline.  \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller,Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"AVO is lowering the Aviation color code to Yellow, Volcano Alert level to Advsiory.","sentUtc":"2016-06-03","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2016-06-03T19:12:34-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2016-06-03T19:12:34-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2016-06-03T19:12:34-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20160520\/1935Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2016\/A11\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe recent period of eruptive activity at Pavlof Volcano that began on May 13, 2016 has ended. Minor ash emissions were last observed on May 16. Since then, we have not detected seismic signals associated with ash emission or lava effusion. Satellite observations show no evidence for eruptive activity. Thus AVO is lowering the Aviation color code and Volcano Alert Level to YELLOW\/ADVISORY. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe volcano remains in a heightened state of unrest. Pauses in eruptive activity of days to weeks are common during eruptive episodes of Pavlof Volcano. A return to eruptive activity remains possible and could occur with little or no warning. Thus, AVO will continue to monitor the volcano closely and will issue additional information as necessary. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot detected or observed.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo ash emissions detected or observed since May 16, 2016.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nMike West, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\nmewest@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Eruption has ended. Unrest continues. Seismicity is low. ","sentUtc":"2016-05-20","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2016-05-20T19:35:39-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2016-05-20T19:35:39-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2016-05-20T19:35:39-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20160513\/2004Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2016\/A10\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAt about 10:35 AM AKDT seismic activity at Pavlof Volcano increased to levels typically associated with low-level eruptive activity and it is possible that an eruption of Pavlof Volcano may be in progress. Nothing has been observed in satellite data and web camera images, but Pavlof is presently obscured by clouds and no thermal signals or ash emissions are evident through the cloud deck. AVO will be monitoring Pavlof closely and will release further information as warranted.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof Volcano is a snow- and ice-covered stratovolcano located on the southwestern end of the Alaska Peninsula about 953 km (592 mi) southwest of Anchorage. The volcano is about 7 km (4.4 mi) in diameter and has active vents on the north and east sides close to the summit.  With over 40 historic eruptions, it is one of the most consistently active volcanoes in the Aleutian arc. Eruptive activity is generally characterized by sporadic Strombolian lava fountaining continuing for a several-month period. Ash plumes as high as 49,000 ft ASL have been generated by past eruptions of Pavlof, and during the 2013 eruption, ash plumes as high as 27,000 feet above sea level extending as much as 500 km (310 mi) beyond the volcano were generated.  The nearest community, Cold Bay, is located 60 km (37 miles) to the southwest of Pavlof. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":" Seismicity above background. Low-level eruption possibly in progress, but not confirmed. ","sentUtc":"2016-05-13","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2016-05-13T20:04:16-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2016-05-13T20:04:16-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2016-05-13T20:04:16-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20160506\/0335Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2016\/A9\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAVO detected an explosion at Cleveland Volcano in both infrasound (air pressure) and seismic data this evening at 18:44 AKDT (2:44 UTC 5\/6\/2016). There are no recent satellite views since the detected explosion. However, previous Cleveland explosions have typically produced ash emissions. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nchris@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDavid Fee, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndfee1@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosion detected this evening.","sentUtc":"2016-05-06","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2016-05-06T03:35:28-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2016-05-06T03:35:28-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2016-05-06T03:35:28-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20160429\/1936Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2016\/A8\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo activity has been observed at Cleveland following the April 16 explosion.  Seismicity returned to low levels within an hour of the explosion, and there have been no infrasound (pressure sensor) signals detected.  Recent satellite views indicate that the August 2015 lava dome is gone and has been replaced with a small cinder cone within the summit crater. Based on seismic levels remaining low since the eruption, and no observations or reports of continued eruptive activity, AVO is reducing the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western portion of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. The volcano is located about 75 km (45 mi) west of the community of Nikolski, and 1500 km (940 mi) southwest of Anchorage. The most recent significant period of eruption began in February, 2001 and produced 3 explosive events that generated ash clouds as high as 39,000 ft above sea level. The 2001 eruption also produced a lava flow and hot avalanche that reached the sea. Since then, Cleveland has been intermittently active producing small lava flows, often followed by explosions that generate small ash clouds generally below 20,000 ft above sea level.  These explosions also launch debris onto the slopes of the cone producing hot pyroclastic avalanches and lahars that sometimes reach the coastline.  \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Status of Cleveland Volcano reduced to YELLOW\/ADVISORY","sentUtc":"2016-04-29","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2016-04-29T19:36:18-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2016-04-29T19:36:18-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2016-04-29T19:36:18-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20160422\/1816Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2016\/A7\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismic activity at Pavlof Volcano has continued to decrease over the past two weeks and no anomalous activity has been detected in satellite data since weakly elevated surface temperatures were seen on April 8.  AVO is therefore lowering the aviation color code to GREEN and the Volcano Alert Level to NORMAL.   \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPauses in eruptive activity lasting days to weeks have occurred during past eruptive episodes of Pavlof Volcano.  A return to robust eruptive activity remains possible and could occur with little or no warning.  AVO will continue daily routine monitoring efforts using seismic, infrasound (pressure sensor) and satellite data.   \u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof Volcano is a snow- and ice-covered stratovolcano located on the southwestern end of the Alaska Peninsula about 953 km (592 mi) southwest of Anchorage. The volcano is about 7 km (4.4 mi) in diameter and has active vents on the north and east sides close to the summit.  With over 40 historic eruptions, it is one of the most consistently active volcanoes in the Aleutian arc. Eruptive activity is generally characterized by sporadic Strombolian lava fountaining continuing for a several-month period. Ash plumes as high as 49,000 ft ASL have been generated by past eruptions of Pavlof, and during the 2013 eruption, ash plumes as high as 27,000 feet above sea level extending as much as 500 km (310 mi) beyond the volcano were generated.  The nearest community, Cold Bay, is located 60 km (37 miles) to the southwest of Pavlof. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Status of Pavlof Volcano lowered to Aviation color code GREEN and Volcano Alert Level NORMAL.  ","sentUtc":"2016-04-22","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2016-04-22T18:16:27-00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2016-04-22T18:16:27-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2016-04-22T18:16:27-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20160416\/1955Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2016\/A6\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAVO detected an explosion at Cleveland Volcano in both infrasound (air pressure) and seismic data this morning at 10:58 AKDT (18:58 UTC). There are no recent satellite views since the detected explosion, but earlier views are obscured by clouds at about 30,000 feet above sea level.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western portion of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. The volcano is located about 75 km (45 mi) west of the community of Nikolski, and 1500 km (940 mi) southwest of Anchorage. The most recent significant period of eruption began in February, 2001 and produced 3 explosive events that generated ash clouds as high as 39,000 ft above sea level. The 2001 eruption also produced a lava flow and hot avalanche that reached the sea. Since then, Cleveland has been intermittently active producing small lava flows, often followed by explosions that generate small ash clouds generally below 20,000 ft above sea level.  These explosions also launch debris onto the slopes of the cone producing hot pyroclastic avalanches and lahars that sometimes reach the coastline.  \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\nfaust@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Cleveland: Explosion detected today.","sentUtc":"2016-04-16","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2016-04-16T19:55:51-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2016-04-16T19:55:51-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2016-04-16T19:55:51-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20160406\/1942Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2016\/A5\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe recent period of eruptive activity at Pavlof Volcano that began on March 27, 2016 has ended. Over the past week, seismicity at the volcano has remained at low levels and shows no indication of activity associated with ash emissions or lava effusion. Satellite observations show no evidence for continuing eruptive activity. Thermal signals at the summit are occasionally visible, but are likely being generated by the cooling of previously erupted lava and debris.The low levels of seismic activity and the lack of evidence for ash emissions or lava effusion indicate that the eruption has ended and thus AVO is lowering the Aviation color code and Volcano Alert Level to YELLOW\/ADVISORY. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPauses in vigorous eruptive activity of days to weeks are common during eruptive episodes of Pavlof Volcano. A return to robust eruptive activity remains possible and could occur with little or no warning. Thus, AVO will continue to monitor the volcano closely and will issue additional information as necessary. \u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVolcanic cloud not observed.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Eruptive activity has ended. The volcano remains restless and a return to robust eruptive activity is possible.","sentUtc":"2016-04-06","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2016-04-06T19:42:56-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2016-04-06T19:42:56-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2016-04-06T19:42:56-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20160329\/0201Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2016\/A4\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe intensity of eruptive activity at Pavlof Volcano has declined significantly starting at about 12:30 pm AKDT and currently continuous ash emission from the summit vent is not being observed in satellite imagery. Thus, AVO is lowering the Aviation Color Code to ORANGE and the Volcano Alert Level to WATCH. Seismicity and infrasound signals from Pavlof have dropped to low levels and it appears that the robust eruptive activity that began yesterday afternoon has declined for now. The level of seismic tremor is still slightly above background. A drifting ash cloud extending from the southern Bering Sea into interior Alaska is still present and may pose a hazard to air travel. Additional information about the ash cloud and its impacts on aviation can be found at http:\/\/aawu.arh.noaa.gov\/.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAlthough the intensity of the eruption has diminished, it is possible for conditions to change at any time and significant ash emissions may resume with little to no warning. At this reduced level of unrest, it is possible that low-level lava fountaining and minor amounts of ash emission may be occurring and affecting the area in the immediate vicinity of the volcano. AVO will continue to monitor the volcano closely.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Based on decline in seismicity, infrasound signals, and ash emission at Pavlof, Aviation Color Code is lowered to ORANGE and Volcano Alert Level to WATCH.","sentUtc":"2016-03-29","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2016-03-29T02:01:05-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2016-03-29T02:01:05-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2016-03-29T02:01:05-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20160328\/1634Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2016\/A3\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe eruption of Pavlof Volcano, that began around 4 pm AKDT yesterday (00:00 UTC) continues. Seismic tremor remains at very high levels. Lightning associated with the ash eruption has been detected this morning, and infrasound (pressure sensor) data from a sensor network located in Dillingham (400 miles or 650 km) also indicate sustained ash emissions. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAs of 7:00 AKDT (15:00 UTC) a continuous plume of ash is observed in satellite images extending for a distance of more than 400 miles (650 km) to the northeast over interior Alaska. SIGMET warning messages issued by the National Weather Service (NWS) Alaska Aviation Weather Unit indicate maximum ash cloud altitude of 37,000 ft above sea level. Please see the NWS web page for additional guidance and forecasts of ash movement. http:\/\/www.weather.gov\/aawu\/sigmets \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nLava fountaining from the summit crater was observed throughout the night by mariners, pilots, and by residents in Cold Bay, located 37 miles (60 km) to the SW, . Volcanic mudflows are likely on the flanks of the volcano and could present a hazard in the local river valleys. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E37,000 ft ASL in SIGMET\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EExtending for 400 miles to the NE as of 07:00 UTC\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof Volcano is a snow- and ice-covered stratovolcano located on the southwestern end of the Alaska Peninsula about 953 km (592 mi) southwest of Anchorage. The volcano is about 7 km (4.4 mi) in diameter and has active vents on the north and east sides close to the summit.  With over 40 historic eruptions, it is one of the most consistently active volcanoes in the Aleutian arc. Eruptive activity is generally characterized by sporadic Strombolian lava fountaining continuing for a several-month period. Ash plumes as high as 49,000 ft ASL have been generated by past eruptions of Pavlof, and during the 2013 eruption, ash plumes as high as 27,000 feet above sea level extending as much as 500 km (310 mi) beyond the volcano were generated.  The nearest community, Cold Bay, is located 60 km (37 miles) to the southwest of Pavlof. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\nfaust@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Eruption is ongoing. Ash cloud reported to 37,000 ft asl extending 400 miles to the NE.","sentUtc":"2016-03-28","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2016-03-28T16:34:30-00:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2016-03-28T16:34:30-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2016-03-28T16:34:30-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20160328\/0112Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2016\/A2\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EPavlof Volcano began erupting abruptly this afternoon, sending an ash cloud to 20,000 ft ASL as reported by a pilot. As of 4:18 pm AKDT (00:18 UTC), ash was reportedly moving northward from the volcano. Seismicity began to increase from background levels at about 3:53 pm (23:53 UTC) with quick onset of continuous tremor, which remains at high levels. AVO is raising the Aviation Color Code to RED and the Volcano Alert Level to WARNING.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe view from the FAA webcamera is obscured by clouds this afternoon, and there are no current satellite images.  AVO is monitoring the situation closely and issue further updates at the situation develops.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E20,000 ft ASL\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof Volcano is a snow- and ice-covered stratovolcano located on the southwestern end of the Alaska Peninsula about 953 km (592 mi) southwest of Anchorage. The volcano is about 7 km (4.4 mi) in diameter and has active vents on the north and east sides close to the summit.  With over 40 historic eruptions, it is one of the most consistently active volcanoes in the Aleutian arc. Eruptive activity is generally characterized by sporadic Strombolian lava fountaining continuing for a several-month period. Ash plumes as high as 49,000 ft ASL have been generated by past eruptions of Pavlof, and during the 2013 eruption, ash plumes as high as 27,000 feet above sea level extending as much as 500 km (310 mi) beyond the volcano were generated.  The nearest community, Cold Bay, is located 60 km (37 miles) to the southwest of Pavlof. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\nfaust@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Eruption with little precursory activity.  Ash cloud to 20,000 ft ASL","sentUtc":"2016-03-28","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2016-03-28T01:12:43-00:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2016-03-28T01:12:43-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2016-03-28T01:12:43-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20160310\/2230Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin  (VNUM #311360)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2016\/A1\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E9373 ft (2857 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThere has been a steady decrease in detected thermal activity at Shishaldin over the past several months.  No anomalous activity has been observed in several clear satellite images of Shishaldin since moderately elevated surface temperatures were detected on Jan. 13.  Airwaves associated with low-level explosive degassing have not been detected in infrasound data since Feb. 7.  Low-amplitude seismic tremor consistent with an open, degassing system continues to be seen in seismic data and is considered to be within the bounds of background activity for Shishaldin.  AVO is therefore downgrading the status of Shishaldin Volcano from aviation color code YELLOW to GREEN and from volcano alert level ADVISORY to NORMAL.  AVO will continue to monitor satellite, seismic and infrasound data from Shishaldin as part of routine monitoring operations.    \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 24 confirmed eruptions since 1775. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\npavel@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Shishaldin aviation color code is being downgraded from YELLOW to GREEN and volcano alert level from ADVISORY to NORMAL. ","sentUtc":"2016-03-10","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2016-03-10T22:30:08-00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2016-03-10T22:30:08-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2016-03-10T22:30:08-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20160130\/0008Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPagan  (VNUM #284170)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tU.S. Geological Survey\n\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2016\/N1\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 18 deg 7 min E 145 deg 48 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tNorthern Mariana Islands\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E1870 ft (570 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESatellite data and ground-based observations from a field crew and local residents indicate that steam and gas emissions from Mount Pagan Volcano have significantly decreased since March 2015.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nBased on the decrease in visible emissions and the current inability to detect and monitor seismic and other volcanic activity, the alert status for Mount Pagan is changed from YELLOW to UNASSSIGNED.  The monitoring network on Pagan Island is currently inoperable and data from onsite seismic, infrasound, and web camera instruments are not being received.   Mount Pagan is therefore not monitored.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWhile the current sustained lack of visible emissions from Mount Pagan represents a change in the typical activity of recent years, there have been similar lulls in activity over the past couple decades, followed by periods of restored and sometimes vigorous activity.  Satellite observations and on-island observations are currently the only means to detect any such future return to heightened activity levels.\u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\nMount Pagan, one of two volcanoes that make up Pagan Island, is located on the northern end of the Island, and is one of the most historically active volcanoes in the Northern Mariana Islands.  The last large eruption (VEI 4) of the volcano was in 1981, followed by three and a half decades of intermittent activity.  The most recent activity has been characterized by vigorous steam plumes and degassing from a shallow magma source.\u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\nA new VAN will be issued if activity at Mount Pagan changes significantly or there is a change in the monitoring status of the volcano. \u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUSGS Northern Marianas Duty Scientist (808) 967-8815\u003Cbr \/\u003E\r\nhttp:\/\/volcano.wr.usgs.gov\/cnmistatus.php\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCNMI Emergency Management Office (670) 322-9274\u003Cbr \/\u003E\r\nhttp:\/\/www.cnmiemo.gov.mp\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Alert status changed from YELLOW to UNASSIGNED.","sentUtc":"2016-01-30","obs":"nmi","vName":"Pagan","vnum":"284170","noticeId":"DOI-USGS-NMI-2016-01-30T00:08:13-00:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2016-01-30T00:08:13-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2016-01-30T00:08:13-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20151211\/2014Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVeniaminof  (VNUM #312070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2015\/A9\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 56 deg 11 min W 159 deg 23 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8225 ft (2507 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismic activity, indicative of unrest, at Veniaminof has decreased to near background levels during the past two weeks. Minor steaming from the intracaldera cone has not been observed since November 16. As a result, AVO is lowering the Aviation Color Code to Green and the Volcano Alert Level to Normal.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMount Veniaminof volcano is an andesitic stratovolcano with an ice-filled 10-km diameter summit caldera located on the Alaska Peninsula, 775 km (480 mi) southwest of Anchorage and 35 km (22 mi) north of Perryville. Veniaminof is one of the largest (~300 cubic km; 77 cubic mi) and most active volcanic centers in the Aleutian Arc and has erupted at least 13 times in the past 200 years. Recent significant eruptions of the volcano occurred in 1993-95, 2005, and 2013. These were Strombolian eruptions that produced lava fountains and minor emissions of ash and gas from the main intracaldera cone. During the 1993-95 activity, a small lava flow was extruded, and in 2013, five small lava flows effused from the intracaldera cone over about five months. Minor ash-producing explosions occurred nearly annually between 2002 and 2010. Previous historical eruptions have produced ash plumes that reached 20,000 ft above sea level (1939 and 1956) and ash fallout that blanketed areas within about 40 km (25 mi) of the volcano (1939).\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Aviation Color Code\/Volcano Alert Level lowered to Green\/Normal. Seismicity near background. ","sentUtc":"2015-12-11","obs":"avo","vName":"Veniaminof","vnum":"312070","noticeId":"DOI-USGS-AVO-2015-12-11T20:14:01-00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2015-12-11T20:14:01-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2015-12-11T20:14:01-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20151120\/2052Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin  (VNUM #311360)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2015\/A8\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E9373 ft (2857 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo anomalous activity at Shishaldin has been observed in satellite data since weakly elevated surface temperatures were detected on October 16.  Low-amplitude seismic tremor continues but is not considered to be indicative of an active eruption.  AVO is therefore downgrading the status of Shishaldin volcano from aviation color code ORANGE to YELLOW and from volcano alert level WATCH to ADVISORY.  AVO will continue to monitor Shishaldin with satellite, seismic and infrasound (pressure sensor) data.  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 16 km (10 mi). A 200-m-wide (660 ft) funnel-shaped summit crater typically emits a steam plume and occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including over 24 confirmed eruptions since 1775. Most eruptions are relatively small, although the April-May 1999 event generated an ash column that reached 45,000 ft above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cbr \/\u003E\r\nJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Shishaldin: No activity detected in satellite data. Color code decreased to YELLOW, Alert level decreased to ADVISORY.","sentUtc":"2015-11-20","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2015-11-20T20:52:03-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2015-11-20T20:52:03-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2015-11-20T20:52:03-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20151014\/1741Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2015\/A7\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EStrongly elevated surface temperatures have not been observed at Cleveland since August 18. Moderately elevated surface temperatures have been observed with decreasing regularity since then, with the most recent instance occurring on September 30. This indicates lava effusion at the summit has likely ceased. In addition, explosive activity, as detected by infrasound, last occurred over two months ago on August 6. Based on the decline in activity, we are lowering the Level of Concern Color Code to YELLOW and the Alert Level to ADVISORY. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCleveland is one of the most active volcanoes of the Aleutian Arc. The latest eruptive phase has waxed and waned almost annually since 2001. Renewed explosive activity and unrest could begin again with little to no precursory warning. Two seismic stations were installed at the volcano during the summer of 2014, and AVO will continue to closely monitor the volcano using seismic and infrasound data, as well as daily satellite and web camera image analysis. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\nfaust@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Based on decline in activity over past month, Cleveland moved to YELLOW\/ADVISORY.","sentUtc":"2015-10-14","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2015-10-14T17:41:58-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2015-10-14T17:41:58-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2015-10-14T17:41:58-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20151001\/1901Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVeniaminof  (VNUM #312070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2015\/A6\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 56 deg 11 min W 159 deg 23 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8225 ft (2507 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EOver the past day, seismicity at Veniaminof has increased and is ongoing in the form of volcanic tremor. Thus we are raising the the Aviation Color Code to Yellow and the Volcano Alert Level to Advisory. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nNo eruptive activity is observed in web camera or satellite views from today. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENot observed\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMount Veniaminof volcano is an andesitic stratovolcano with an ice-filled 10-km diameter summit caldera located on the Alaska Peninsula, 775 km (480 mi) southwest of Anchorage and 35 km (22 mi) north of Perryville. Veniaminof is one of the largest (~300 cubic km; 77 cubic mi) and most active volcanic centers in the Aleutian Arc and has erupted at least 13 times in the past 200 years. Recent significant eruptions of the volcano occurred in 1993-95, 2005, and 2013. These were Strombolian eruptions that produced lava fountains and minor emissions of ash and gas from the main intracaldera cone. During the 1993-95 activity, a small lava flow was extruded, and in 2013, five small lava flows effused from the intracaldera cone over about five months. Minor ash-producing explosions occurred nearly annually between 2002 and 2010. Previous historical eruptions have produced ash plumes that reached 20,000 ft above sea level (1939 and 1956) and ash fallout that blanketed areas within about 40 km (25 mi) of the volcano (1939).\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Increased seismicity over the past day and ongoing. No signs of eruptive activity.  ","sentUtc":"2015-10-01","obs":"avo","vName":"Veniaminof","vnum":"312070","noticeId":"DOI-USGS-AVO-2015-10-01T19:01:22-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2015-10-01T19:01:22-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2015-10-01T19:01:22-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20150721\/1713Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2015\/A5\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAVO detected an explosion at Cleveland Volcano in both infrasound (air pressure) and seismic data this morning at 08:17 AKDT (16:17 UTC).  Satellite views are obscured by clouds at about 30,000 feet above sea level.  No ash has been observed above the clouds at this time.  Clouds obscure views by web camera this morning.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western portion of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. The volcano is located about 75 km (45 mi) west of the community of Nikolski, and 1500 km (940 mi) southwest of Anchorage. The most recent significant period of eruption began in February, 2001 and produced 3 explosive events that generated ash clouds as high as 39,000 ft above sea level. The 2001 eruption also produced a lava flow and hot avalanche that reached the sea. Since then, Cleveland has been intermittently active producing small lava flows, often followed by explosions that generate small ash clouds generally below 20,000 ft above sea level.  These explosions also launch debris onto the slopes of the cone producing hot pyroclastic avalanches and lahars that sometimes reach the coastline.  \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosion detected today.  ","sentUtc":"2015-07-21","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2015-07-21T17:13:03-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2015-07-21T17:13:03-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2015-07-21T17:13:03-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20150617\/2021Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2015\/A4\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EElevated surface temperatures have been detected in satellite images at the summit of Cleveland for the past week, and an image from June 14 shows very light ash cover on the volcano's upper flanks. Thus the volcano has entered a renewed period of unrest and we are raising the Color Code to Yellow and the Alert Level to Advisory. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe increase in temperature at the summit is consistent with renewed growth of the small lava dome within the summit crater. The possibility of sudden explosions has increased. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western portion of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. The volcano is located about 75 km (45 mi) west of the community of Nikolski, and 1500 km (940 mi) southwest of Anchorage. The most recent significant period of eruption began in February, 2001 and produced 3 explosive events that generated ash clouds as high as 39,000 ft above sea level. The 2001 eruption also produced a lava flow and hot avalanche that reached the sea. Since then, Cleveland has been intermittently active producing small lava flows, often followed by explosions that generate small ash clouds generally below 20,000 ft above sea level.  These explosions also launch debris onto the slopes of the cone producing hot pyroclastic avalanches and lahars that sometimes reach the coastline.  \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nMike West, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\nmewest@alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Increase in summit temperatures indicates renewed unrest.","sentUtc":"2015-06-17","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2015-06-17T20:21:52-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2015-06-17T20:21:52-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2015-06-17T20:21:52-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20150528\/2152Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2015\/A3\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA decline in seismicity over the last few months and no sign of activity in daily satellite images prompts AVO to downgrade Semisopochnoi volcano from Aviation Color Code YELLOW and Volcanic Alert Level ADVISORY to UNASSIGNED.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFollowing a brief seismic swarm in June and July, 2014, an increase in seismicity at Semisopochnoi seismic stations was recorded in January 2015.  Numerous small earthquakes, most with magnitudes less than 1 over the next several months led AVO to include Semisopochnoi in the March 20, 2015 Weekly Update.  On March 25, 2015, citing increased earthquake activity including brief periods of tremor, AVO raised the Aviation Color Code and Volcano Alert Level to YELLOW\/ADVISORY.  Over the next two months seismic levels have declined and no activity has been observed in daily satellite images or other remote sensing data.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO will continue to monitor Semisopochnoi seismic data and evaluate daily satellite images.  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nchris@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Decline in seismicity and no activity detected in satellite data prompt downgrade of status to UNASSGIGNED.","sentUtc":"2015-05-28","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2015-05-28T21:52:17-00:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2015-05-28T21:52:17-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2015-05-28T21:52:17-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20150325\/1731Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            UNASSIGNED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2015\/A2\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EEarthquake activity at Semisopochnoi that began in January continues, and has increased in intensity over the past few days. In addition, we have detected brief periods of seismic tremor, which can indicate movement of magma or magmatic gases. Thus we are increasing the aviation color code to YELLOW and the volcano alert level to ADVISORY. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO has not observed any other signs of volcanic activity in remote sensing or other data.  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERemote Semisopochnoi volcano occupies the largest young volcanic island in the western Aleutians. The volcano is dominated by a 7-km (5-mile) diameter caldera that contains a small lake and a number of post-caldera cones and craters. The age of the caldera is not known with certainty but is likely early Holocene. The last known eruption of Semisopochnoi occurred in 1987, probably from Sugarloaf Peak on the south coast of the island, but details are lacking.  Another prominent, young post-caldera landform is Mount Cerberus, a three-peaked cone cluster in the southwest part of the caldera. The island is uninhabited and part of the Alaska Maritime National Wildlife Refuge. It is located 65 km (40 mi) northeast of Amchitka Island and 200 km (130 mi) west of Adak. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Semisopochnoi is experiencing higher than normal levels of seismic activity.  No other signs of volcanic activity have been observed.","sentUtc":"2015-03-25","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2015-03-25T17:31:17-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2015-03-25T17:31:17-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2015-03-25T17:31:17-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20150115\/2113Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2015\/A1\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EPavlof Volcano has returned to its background state following its most recent eruption. Since late November, 2014, no lava or ash emissions have occurred at Pavlof Volcano and the volcano has exhibited gradually declining levels of unrest. Seismicity is now at background levels. Consequently, AVO is lowering the Aviation Color Code to GREEN and the Volcano Alert Level to NORMAL.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nRockfalls and small avalanches of debris may occur intermittently on the north-northwest flank of the volcano. Drainages leading away from the north flank of Pavlof are susceptible to small lahars and minor floods as long as hot material remains high on the slopes of the volcano where it could mix with ice and snow.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavlof has, in past eruptions, resumed activity after pauses as long as 55 days, and AVO continues to monitor the volcano closely for signs of renewed activity. We expect hours to days of increased seismicity prior to a resumption of eruptive activity. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof Volcano is a snow- and ice-covered stratovolcano located on the southwestern end of the Alaska Peninsula about 953 km (592 mi) southwest of Anchorage. The volcano is about 7 km (4.4 mi) in diameter and has active vents on the north and east sides close to the summit.  With over 40 historic eruptions, it is one of the most consistently active volcanoes in the Aleutian arc. Eruptive activity is generally characterized by sporadic Strombolian lava fountaining continuing for a several-month period. Ash plumes as high as 49,000 ft ASL have been generated by past eruptions of Pavlof, and during the 2013 eruption, ash plumes as high as 27,000 feet above sea level extending as much as 500 km (310 mi) beyond the volcano were generated.  The nearest community, Cold Bay, is located 60 km (37 miles) to the southwest of Pavlof. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJanet Schaefer, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njanet.schaefer@alaska.gov (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Volcanic activity at background levels.","sentUtc":"2015-01-15","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2015-01-15T21:13:49-00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2015-01-15T21:13:49-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2015-01-15T21:13:49-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20141126\/0027Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2014\/A19\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe most recent period of explosive eruptive activity at Pavlof Volcano has ended. For about the past week, seismicity at the volcano has remained at low levels and shows no indication of the unrest typically associated with lava fountaining or ash emission. Satellite observations show no evidence for continuing eruptive activity. Thermal signals at the summit are occasionally visible, but are likely being generated by the cooling of previously emplaced lava and debris and not newly erupted material. The low levels of seismic activity and the lack of evidence for continued lava effusion indicate that the brief eruption has ended and thus AVO is lowering the Aviation color code and Volcano Alert Level to YELLOW\/ADVISORY.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPauses in vigorous eruptive activity of days to weeks are common during eruptive episodes of Pavlof Volcano. A return to more robust eruptive activity remains possible and could occur with little or no warning. Thus, AVO will continue to monitor the volcano closely and will issue additional information as necessary. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Seismicity at low levels. Eruption has ended. ","sentUtc":"2014-11-26","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2014-11-26T00:27:30-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2014-11-26T00:27:30-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2014-11-26T00:27:30-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20141124\/1049Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin  (VNUM #311360)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2014\/A18\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E9373 ft (2857 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismic activity has increased over the past two hours and more sharply over the past 30 minutes, suggesting that the eruption at Shishaldin has intensified. Ash emissions beyond the immediate summit crater are more likely while seismic activity is increased. Satellite images from earlier tonight show elevated surface temperatures near the volcano's summit. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Seismic activity has increased sharply over the past hour. Eruption has intensified.","sentUtc":"2014-11-24","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2014-11-24T10:49:42-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2014-11-24T10:49:42-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2014-11-24T10:49:42-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20141116\/1713Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2014\/A17\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe intensity of the eruption of Pavlof Volcano has greatly diminished, and the Aviation Color Code is being decreased  to ORANGE and the Volcano Alert Level to WATCH.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSeismic tremor abruptly decreased around 7 pm AKST yesterday (04:00 UTC on 16 November) and has remained at very low levels since. Satellite observations  confirmed a large decrease in ash emissions, and at present show no evidence of an ash plume at the volcano. Discrete seismic events continue to be observed at Pavlof, and minor ash emissions may be occurring that are not detected in satellite.  Pilot and\/or ground observer reports may provide additional information once the sun comes up. Pauses of days to weeks are common during eruptive episodes at Pavlof and increased activity could occur with little warning.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAviation users should refer to the National Weather Service for updated SIGMETs on the ash cloud hazard (http:\/\/www.weather.gov\/aawu\/sigmets). No reports of ash fallout on nearby communities have been received and we encourage observers to contact AVO should it occur (https:\/\/www.avo.alaska.edu\/ashfall\/ashreport.php). \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone detected at the volcano at present. Minor ash emissions may occur but will likely be lower than 12,000 ft above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESee SIGMETs for information on dispersed cloud from the period of heightened activity.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Paskievitch, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpaskie@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Intensity of eruption has greatly diminished. Seismicity at low levels.","sentUtc":"2014-11-16","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2014-11-16T17:13:48-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2014-11-16T17:13:48-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2014-11-16T17:13:48-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20141115\/2030Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2014\/A16\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe eruption of Pavlof Volcano that began on November 12  has intensified and the ash cloud height is currently estimated at 25,000 ft above sea level. Thus, the Aviation Color Code has been raised to RED and the Volcano Alert Level to WARNING. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe intensity of seismic tremor has increased significantly over the past 6 hours, and satellite data indicate that the ash cloud is now at an altitude of 25,000 ft above sea level. As of 11:00 am AKST (20:00 UTC) the cloud is moving towards the northwest and extends for about 125 miles (200 km) downwind.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAviation users should refer to the National Weather Service for updated SIGMETs on the ash cloud hazard (http:\/\/www.weather.gov\/aawu\/sigmets). No reports of ash fallout on nearby communities have been reported, and we encourage observers to contact AVO should it occur (https:\/\/www.avo.alaska.edu\/ashfall\/ashreport.php).\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E25,000 ft\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMoving towards the NW. \r\nSee http:\/\/www.weather.gov\/aawu\/sigmets for latest updated SIGMET.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Eruption has intensified. Ash cloud height now estimated at 25,000 ft above sea level. ","sentUtc":"2014-11-15","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2014-11-15T20:30:28-00:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2014-11-15T20:30:28-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2014-11-15T20:30:28-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20141113\/0357Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2014\/A15\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EPavlof Volcano has entered a new phase of eruptive activity. The Aviation Color Code has been increased to Orange and the Volcano Alert Level to Watch. A ground observer in Cold Bay located 60 km (37 miles) from the volcano has reported ash emissions up to 9000 ft above sea level (about 700 ft above the summit). Minor ash emissions were visible in the FAA-operated web camera in Cold Bay beginning around 1:50 UTC on 13 November (4:50 pm AKST on 12 November). Seismic tremor has increased over the past several hours and remains elevated. Satellite observation of the volcano are currently obscured by a low cloud deck.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAsh height reported up to 9000 ft above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMinor ash emissions observed in web camera images.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof Volcano is a snow- and ice-covered stratovolcano located on the southwestern end of the Alaska Peninsula about 953 km (592 mi) southwest of Anchorage. The volcano is about 7 km (4.4 mi) in diameter and has active vents on the north and east sides close to the summit.  With over 40 historic eruptions, it is one of the most consistently active volcanoes in the Aleutian arc. Eruptive activity is generally characterized by sporadic Strombolian lava fountaining continuing for a several-month period. Ash plumes as high as 49,000 ft ASL have been generated by past eruptions of Pavlof, and during the 2013 eruption, ash plumes as high as 27,000 feet above sea level extending as much as 500 km (310 mi) beyond the volcano were generated.  The nearest community, Cold Bay, is located 60 km (37 miles) to the southwest of Pavlof. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Low-level ash emissions began around 02:00 UTC","sentUtc":"2014-11-13","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2014-11-13T03:57:54-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2014-11-13T03:57:54-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2014-11-13T03:57:54-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20141028\/2305Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin  (VNUM #311360)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2014\/A14\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E9373 ft (2857 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe ongoing low-level eruptive activity at Shishaldin Volcano has increased in intensity over the past several days.  Elevated surface temperatures were observed in satellite images beginning on October 25, and early that evening seismic tremor began to be recorded on nearby seismic stations, accompanied by stronger thermal anomalies.  New deposits of ash and ballistics darkened the summit area, indicating the activity was energetic enough to eject material from a depth of several hundred meters (~600 ft) within the summit crater. The activity was recorded on infrasound arrays located in Akutan, 90 mi (145 km) to the southwest, and Dillingham, 363 mi (585 km) to the northeast.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nNo ash plumes have been reported or observed in satellite data; however, a steam and gas plume was visible in satellite imagery on Saturday, October 25.  As of today, tremor continues and has increased in the past 24 hours.     \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Uptick in low-level eruptive activity","sentUtc":"2014-10-28","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2014-10-28T23:05:46-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2014-10-28T23:05:46-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2014-10-28T23:05:46-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20140904\/1858Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2014\/A13\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe rate and intensity of earthquake activity at Semisopochnoi has been decreasing over the past two months and there are no indications from satellite observations of any changes on the surface of the volcano. Thus, the Aviation Color Code and Volcano Alert Level have been decreased to Unassigned. Although we are confident that earthquake activity has decreased significantly, the seismic data from Semisopochnoi has suffered from frequent data outages. We are unable to assign the Green\/Normal alert levels until the data transmission proves to be more reliable. We will continue to monitor Semisopochnoi with seismic data when available, and with satellite data.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERemote Semisopochnoi volcano occupies the largest, young volcanic island in the western Aleutians. The volcano is dominated by an 8-km (5-mile) diameter caldera that contains a small lake and a number of post-caldera cones and craters. The age of the caldera is not known with certainty but is likely early Holocene. The last known eruption of Semisopochnoi occurred in 1987, probably from Sugarloaf Peak on the south coast of the island, but details are lacking.  Another prominent, young post-caldera landform is Mount Cerberus, a three-peaked cone cluster in the southwest part of the caldera. The island is uninhabited and part of the Alaska Maritime National Wildlife Refuge. It is located 65 km (40 mi) northeast of Amchitka Island and 200 km (130 mi) west of Adak. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cbr \/\u003E\r\nJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No volcanic unrest detected.","sentUtc":"2014-09-04","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2014-09-04T18:58:02-00:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2014-09-04T18:58:02-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2014-09-04T18:58:02-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20140730\/2239Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2014\/A12\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe eruption of Pavlof Volcano has ended, and the volcano has returned to its background state. Lava fountaining was last observed at Pavlof in mid-June, and the volcano has exhibited gradually declining levels of unrest since that time. Seismic data are now at background levels. Consequently, AVO is lowering the Aviation Color Code to GREEN and the Volcano Alert Level to NORMAL.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nRockfalls and small avalanches of debris may occur intermittently on the north-northwest flank of the volcano. Drainages leading away from the north flank of Pavlof are susceptible to small lahars and minor floods as long as hot material remains high on the slopes of the volcano where it could mix with ice and snow.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavlof has, in past eruptions, resumed activity after pauses as long as 55 days, and AVO continues to monitor the volcano closely for signs of renewed activity. We expect hours to days of increased seismicity prior to a resumption of eruptive activity. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone observed.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof Volcano is a snow- and ice-covered stratovolcano located on the southwestern end of the Alaska Peninsula about 953 km (592 mi) southwest of Anchorage. The volcano is about 7 km (4.4 mi) in diameter and has active vents on the north and east sides close to the summit.  With over 40 historic eruptions, it is one of the most consistently active volcanoes in the Aleutian arc. Eruptive activity is generally characterized by sporadic Strombolian lava fountaining continuing for a several-month period. Ash plumes as high as 49,000 ft ASL have been generated by past eruptions of Pavlof, and during the 2013 eruption, ash plumes as high as 27,000 feet above sea level extending as much as 500 km (310 mi) beyond the volcano were generated.  The nearest community, Cold Bay, is located 60 km (37 miles) to the southwest of Pavlof. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMatt Haney, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmhaney@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\nfaust@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Volcanic activity at background levels. ","sentUtc":"2014-07-30","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2014-07-30T22:39:58-00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2014-07-30T22:39:58-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2014-07-30T22:39:58-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20140709\/2357Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVeniaminof  (VNUM #312070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2014\/A11\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 56 deg 11 min W 159 deg 23 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8225 ft (2507 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismic activity, indicative of unrest, at Veniaminof has decreased to near background levels during the past week. Clear eruptive activity has not been observed since October of 2013. Thus AVO is lowering the Aviation Color Code to Green and the Volcano Alert Level to Normal. Occasional steam plumes and weakly elevated surface temperatures may continue to be seen in satellite and webcam imagery as lava flows cool. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nIt is possible that this is only a temporary pause of activity in the eruption that began in June 2013, and that the eruption could resume. Pauses in eruptive activity are not uncommon at this volcano. AVO will continue to monitor the volcano closely.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMount Veniaminof volcano is an andesitic stratovolcano with an ice-filled 10-km diameter summit caldera located on the Alaska Peninsula, 775 km (480 mi) southwest of Anchorage and 35 km (22 mi) north of Perryville. Veniaminof is one of the largest (~ 300 cubic km; 77 cubic mi) and most active volcanic centers in the Aleutian Arc and has erupted at least 13 times in the past 200 years. Recent significant eruptions of the volcano occurred in 1993-95 and 2005. Both were Strombolian eruptions producing lava fountans and minor emissions of ash and gas from the main intracaldera cone. During the 1993-95 activity, a small lava flow was extruded into the ice field producing a melt pit. Minor ash-producing explosions occurred nearly annually between 2002 and 2008. Previous historical eruptions have produced ash plumes that reached 20,000 ft above sea level (1939 and 1956) and ash fallout that blanketed areas within about 40 km (25 mi) of the volcano (1939).\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymeuller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Aviation Color Code\/Volcano Alert Level lowered to Green\/Normal.  Seismicity near background.  ","sentUtc":"2014-07-09","obs":"avo","vName":"Veniaminof","vnum":"312070","noticeId":"DOI-USGS-AVO-2014-07-09T23:57:07-00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2014-07-09T23:57:07-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2014-07-09T23:57:07-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20140625\/1835Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2014\/A10\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EEruptive activity at Pavlof Volcano appears to have ceased. Clear web camera and satellite images over the past several days have shown no evidence of continued lava fountaining from the summit.  Only weakly elevated surface temperatures in the vicinity of recent lava flows northeast of the summit have been recorded. AVO has observed no evidence of ash emission from the volcano since early June. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nConsequently, the Aviation Color Code is being reduced to Yellow and the Volcano Alert Level to Advisory.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDespite this apparent quiet, small discrete seismic events continue. These signals may be related to several processes including (1) degassing of unerupted magma within the volcano\u00e2\u20ac\u2122s conduit and (2) periodic collapse of ejecta and other debris down the steep flanks of the volcano.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavlof remains restless and an intermittent plume of steam and gas from the summit is to be expected. Renewed eruptive activity is possible and may not be preceded by significant seismicity. AVO will continue to monitor Pavlof closely.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENil\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENil\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof Volcano is a snow- and ice-covered stratovolcano located on the southwestern end of the Alaska Peninsula about 953 km (592 mi) southwest of Anchorage. The volcano is about 7 km (4.4 mi) in diameter and has active vents on the north and east sides close to the summit.  With over 40 historic eruptions, it is one of the most consistently active volcanoes in the Aleutian arc. Eruptive activity is generally characterized by sporadic Strombolian lava fountaining continuing for a several-month period. Ash plumes as high as 49,000 ft ASL have been generated by past eruptions of Pavlof, and during the 2013 eruption, ash plumes as high as 27,000 feet above sea level extending as much as 500 km (310 mi) beyond the volcano were generated.  The nearest community, Cold Bay, is located 60 km (37 miles) to the southwest of Pavlof. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymeuller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No sign of continued eruptive activity. ","sentUtc":"2014-06-25","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2014-06-25T18:35:06-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2014-06-25T18:35:06-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2014-06-25T18:35:06-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20140613\/2016Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESemisopochnoi  (VNUM #311060)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2014\/A9\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min E 179 deg 35 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2625 ft (800 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA swarm of earthquakes at Semisopochnoi volcano that started at 10:00 AKDT (18:00 UTC) on June 9 escalated yesterday, June 12, at approximately 12:00 AKDT (20:00 UTC). The continuation of this anomalous seismic activity through the night prompts AVO to raise the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY. No eruptive activity is currently indicated.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO is closely monitoring the situation and will issue further updates as conditions change.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSemisopochnoi volcano is monitored by a 6-station seismic network as well as satellite imagery. Five of the seismic stations on Semisopochnoi are currently operational. The telemetry system for the Semisopochnoi stations, located on Amchitka Island, was just repaired in late May. Semisopochnoi Island is located 65 km (40 mi) northeast of Amchitka and 200 km (130 mi) west of Adak in the remote western Aleutian Islands. The last eruption of Semisopochnoi occurred in 1987.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymeuller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Semisopochnoi volcano raised to Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY based on seismicity.","sentUtc":"2014-06-13","obs":"avo","vName":"Semisopochnoi","vnum":"311060","noticeId":"DOI-USGS-AVO-2014-06-13T20:16:28-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2014-06-13T20:16:28-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2014-06-13T20:16:28-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20140604\/0154Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2014\/A8\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAVO is reducing the Aviation Color Code to ORANGE and the Volcano Alert Level to WATCH for Pavlof Volcano.  Although the eruption of Pavlof continues, seismic tremor has deceased over the past 12 hours and has remained relatively steady throughout the day at a much lower level than that of yesterday.  Recent satellite data and web camera views of the eruption plume indicate that there are now two distinct parts of the plume.  The part of the plume that reaches high above the volcano appears to be mainly steam and gas with minor ash present, extending south of the volcano.  Additionally, pyroclastic flow activity on the north flank is producing diffuse ash emissions that result in areas of hazy air, with variable concentrations of ash below 10,000 ft.  Low-level winds are likely to disperse this ash to the west-southwest with no more than trace amounts accumulating. There are no reports of ash falling in nearby communities. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHazardous conditions exist on the north flank and north side drainages heading on the volcano due to continued pyroclastic and lahar activity.  Ash in the vicinity of the volcano remains a hazard to local air traffic.  AVO will continue to closely monitor the activity at Pavlof.  With the eruption ongoing, conditions can change rapidly, and the possibility remains for large, more ash-rish plumes to develop with little or no warning. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymeuller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"The eruption of Pavlof continues.  Seismic tremor has decreased. Ash production reduced.","sentUtc":"2014-06-04","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2014-06-04T01:54:13-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2014-06-04T01:54:13-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2014-06-04T01:54:13-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20140603\/0130Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2014\/A7\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ERESENDING:  The low-level eruption of Pavlof has escalated. Seismic tremor increased starting about 2300 UTC today and pilots have recently reported ash clouds to 22,000 ft. ASL.  Recent satellite images show a plume extending over 80 km east of the volcano.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymeuller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"The low-level eruption of Pavlof has escalated.  Seismic tremor increased about 2300 UTC today and pilots report ash clouds to 22,000 ft. ASL.","sentUtc":"2014-06-03","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2014-06-03T01:30:38-00:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2014-06-03T01:30:38-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2014-06-03T01:30:38-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20140603\/0121Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2014\/A6\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe low-level eruption of Pavlof has escalated. Seismic tremor increased starting about 2300 UTC today and pilots have recently reported ash clouds to 22,000 ft. ASL.  Recent satellite images show a plume extending over 80 km east of the volcano.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymeuller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"The low-level eruption of Pavlof has escalated.  Seismic tremor increased about 2300 UTC today and pilots report ash clouds to 22,000 ft. ASL.","sentUtc":"2014-06-03","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2014-06-03T01:21:45-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2014-06-03T01:21:45-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2014-06-03T01:21:45-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20140531\/1936Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2014\/A5\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EElevated surface temperatures were detected at the summit of Pavlof volcano in satellite imagery this morning suggesting that the volcano is experiencing a low-level eruption with lava at the surface.  A low level steam plume is visible in satellite imagery and in the FAA web camera located in Cold Bay.  A pilot reported a gas and ash plume drifting north at 7,000 to 8,000 feet above sea level.  Based on these observations AVO is raising the Aviation Color Code to ORANGE and the Volcano Alert Level to WATCH for Pavlof volcano.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymeuller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Strong elevated surface temperatures, pilot reports and web camera images suggest that Pavlof is experiencing a low-level eruption.","sentUtc":"2014-05-31","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2014-05-31T19:36:51-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2014-05-31T19:36:51-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2014-05-31T19:36:51-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20140529\/2114Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAhyi  (VNUM #284141)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tU.S. Geological Survey\n\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2014\/N2\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 20 deg 25 min E 145 deg 1 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tNorthern Mariana Islands\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E-449 ft (-137 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismic activity indicative of submarine eruptions near Ahyi seamount has ended.  The last signal from the Ahyi area received on distant seismometers was recorded on May 17.  NOAA scientists working in the vicinity of Ahyi on the research vessel Hi'ialakai in mid-May reported no significant signs of ongoing submarine venting. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nBased on the apparent cessation of activity, we are returning Ahyi seamount to UNASSIGNED.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe exact location of the April-May 2014 activity in the northern Mariana Islands remains uncertain.  Additional investigations will be required to further constrain the source vent and details of the type of submarine volcanic activity.  Submarine vents from active Farallon de Pajaros (Uracas) Island 18 km (11 mi) northwest of Ahyi seamount is one potential candidate.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAt no time during the period of unrest was anything observed in satellite imagery that suggested activity had reached the surface. A single shipboard sighting of possible floating debris near the southern shoreline of Farallon de Pajaros (Uracas) Island in mid-May may have been related to the unrest, but this remains uncertain. \u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo cloud produced.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENil.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAhyi seamount is a large conical submarine volcano that rises to within 137 m (450 ft) of the sea surface about 18 km (11 mi) southeast of Farallon de Pajaros (Uracas) Island in the northern Marianas, about 600 km (370 mi) north of the island of Saipan.  In the past, discolored water has been observed over the submarine volcano.  In 1979, the crew of a fishing boat felt shocks over the summit area and then observed upwelling of sulfur-bearing water. On April 24-25, 2001 an explosive submarine eruption was detected seismically from a seismic station on Rangiroa Atoll, Tuamotu Archipelago. The event was well constrained (+\/- 15 km or 9 miles) at a location near the southern base of Ahyi.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUSGS Northern Marianas Duty Scientist (808) 967-8815\u003Cbr \/\u003E\r\nhttp:\/\/volcano.wr.usgs.gov\/cnmistatus.php\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCNMI Emergency Management Office (670) 322-9274\u003Cbr \/\u003E\r\nhttp:\/\/www.cnmiemo.gov.mp\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Submarine eruption near Ahyi seamount has ended. ","sentUtc":"2014-05-29","obs":"nmi","vName":"Ahyi Seamount","vnum":"284141","noticeId":"DOI-USGS-NMI-2014-05-29T21:14:00-00:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2014-05-29T21:14:00-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2014-05-29T21:14:00-00:00","nvewsThreat":"Very Low Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20140426\/0141Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAhyi  (VNUM #284141)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tU.S. Geological Survey\n\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2014\/N1\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 20 deg 25 min E 145 deg 1 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tNorthern Mariana Islands\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E-449 ft (-137 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EStarting at 06:35 24 April ChST (20:35 23 April UTC), seismic stations on Pagan, Sarigan, Anatahan and Saipan began recording signals believed to be from an undersea volcanic source.  Hydroacoustic sensors on Wake Island suggest that the source of this seismic activity is at or near Ahyi seamount. We cannot locate precisely the source of the activity and it is possible that the vent is one of the other volcanic seamounts in the area. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSeismic activity is ongoing at this time. Satellite images show nothing out of the ordinary and we have received no reports of activity at the ocean's surface.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAhyi seamount is a large conical submarine volcano that rises to within 137 m of the sea surface about 18 km SE of the island of Farallon de Pajaros (Uracas) in the northern Marianas. Water discoloration has been observed over the submarine volcano, and in 1979 the crew of a fishing boat felt shocks over the summit area followed by upwelling of sulfur-bearing water. On April 24-25, 2001 an explosive submarine eruption was detected seismically from a seismic station on Rangiroa Atoll, Tuamotu Archipelago. The event was well constrained (+\/- 15 km) at a location near the southern base of Ahyi; the summit of the seamount lies within the location uncertainty.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Possible submarine eruption at or near Ahyi seamount detected by seismic activity. No surface observations.","sentUtc":"2014-04-26","obs":"nmi","vName":"Ahyi Seamount","vnum":"284141","noticeId":"DOI-USGS-NMI-2014-04-26T01:41:36-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2014-04-26T01:41:36-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2014-04-26T01:41:36-00:00","nvewsThreat":"Very Low Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20140328\/2219Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin  (VNUM #311360)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2014\/A4\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E9373 ft (2857 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe Alaska Volcano Observatory is raising the Aviation Color Code to ORANGE and Alert Level to WATCH at Shishaldin Volcano.  Elevated surface temperatures were detected in satellite data beginning on March 18 and have persisted to the present time.  Analysis of this data shows that temperatures are consistent with the eruption of lava within the summit crater.  The current activity appears to be confined to the deep summit crater and there have been no observations of lava on the flanks of the volcano or surrounding the summit crater. Web camera images, satellite data and pilot observations over the past week show only minor steam emissions from the mountain's summit crater.  There has been no evidence of ash emission.     \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSound waves coupling into the ground (ground-coupled air waves) indicative of small explosions in the crater began to be seen in seismic data on March 18 and continue to be detected intermittently.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A small summit crater typically emits a noticeable steam plume with occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, with at least 54 episodes of unrest including at least 24 confirmed eruptions since 1775. Most of Shishaldin's eruptions have consisted of small ash and steam plumes, although a recent eruption in April-May 1999 produced an ash column that reached a height of 45,000 ft above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymeuller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Elevated surface temperatures are detected in satellite images consistent with lava effusion. Low level activity detected in seismic data.","sentUtc":"2014-03-28","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2014-03-28T22:19:36-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2014-03-28T22:19:36-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2014-03-28T22:19:36-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20140130\/2039Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin  (VNUM #311360)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2014\/A3\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E9373 ft (2857 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe Alaska Volcano Observatory is raising the Aviation Color Code to YELLOW and the Alert Level to ADVISORY at Shishaldin Volcano based on satellite observations over the past day of increased surface temperatures in the summit crater, as well as increased emissions of steam observed yesterday in satellite and web camera images. These observations represent a departure from normal background activity at Shishaldin, but do not necessarily indicate that an eruption will occur. Similar levels of unrest were last noted during 2009, and did not result in an eruption. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nShishaldin is monitored by a local seismic network, satellite data, web camera, telemetered geodetic network, and distant infrasound networks. Seismic monitoring of Shishaldin is significantly impaired due to equipment failures of seismic stations close to the volcano. We hope to be able to detect significant explosive activity (should it occur) using remaining functioning seismic stations in the region, satellite, and distant infrasound networks. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO will continue to watch Shishaldin carefully for additional signs of increased unrest.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone observed.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone observed.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A small summit crater typically emits a noticeable steam plume with occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, erupting atleast 28 times since 1775.  Most of Shishaldin's eruptions have consisted of small ash and steam plumes, although the most recent eruption in April-May 1999 produced an ash column that reached a height of 45,000 ft above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Increased unrest at Shishaldin Volcano, with elevated surface temperatures and steaming observed.","sentUtc":"2014-01-30","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2014-01-30T20:39:11-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2014-01-30T20:39:11-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2014-01-30T20:39:11-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20140110\/2231Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2014\/A2\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo activity has been observed at Cleveland since the three brief explosions on December 28 and 30 and January 2. Satellite views since January 2 suggest that no new lava has effused at the summit crater. Thus we are lowering the Level of Concern Color Code to YELLOW and the Alert Level to ADVISORY. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nIt remains possible for brief, sudden explosions of blocks and ash from the summit vent to occur with little to no warning. These explosions may produce drifting ash clouds and local fallout of ash over the surrounding ocean, on the flanks of Cleveland Volcano, and on parts of Chuginadak Island. It is possible that more energetic explosions will occur that may produce more significant ash clouds.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nIf a large ash-producing event occurs, nearby seismic, infrasound, or volcanic lightning networks should alert AVO staff quickly. However, for some events, a delay of several hours or more is possible. Cleveland volcano does not have a local seismic network and is monitored using only distant seismic and infrasound instruments and satellite data.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJanet Schaefer, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njanet.schaefer@alaska.gov (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Brief explosion on Jan. 2 UTC. Ash cloud observed north of volcano. Nothing observed since then.","sentUtc":"2014-01-10","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2014-01-10T22:31:15-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2014-01-10T22:31:15-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2014-01-10T22:31:15-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20140102\/2019Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2014\/A1\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ECleveland Volcano appears to have entered a renewed phase of elevated unrest and AVO is moving the Aviation Color Code and Alert Level from Yellow\/Advisory to ORANGE\/WATCH. Three brief explosions were detected over the past six days on Saturday Dec. 28, Monday, Dec. 30, and at 04:00 UTC, Jan. 2, 2014 (1900 AKST Jan. 1). Minor ash plumes were observed in satellite data following the events on Dec. 30 and Jan. 2. The plumes were only visible in single satellite images where they appeared as distinct ash plumes, detached from the summit, extending 45 to 60 miles (75 to 100 km) north of the volcano.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe height of the ash plumes generated on Dec. 30 and Jan. 2 is not known. Analysis of satellite, wind, and ash dispersion data indicates that these particular plumes probably did not reach more than 15,000 feet above sea level. Past explosive activity at Cleveland Volcano has produced ash clouds that have risen above 20,000 feet and if explosive activity continues, it remains possible for ash clouds to reach this height or higher.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nIt is possible for brief, sudden explosions of blocks and ash from the summit vent of Cleveland Volcano to occur with little to no warning. These explosions may produce drifting ash clouds and local fallout of ash over the surrounding ocean, on the flanks of Cleveland Volcano, and on parts of Chuginadak Island. It is possible that more energetic explosions will occur that may produce more significant ash clouds.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nIf a large ash-producing event occurs, nearby seismic, infrasound, or volcanic lightning networks should alert AVO staff quickly. However, for some events, a delay of several hours or more is possible. Cleveland volcano does not have a local seismic network and is monitored using only distant seismic and infrasound instruments and satellite data.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western half of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. It is located about 75 km (45 mi) west of the community of Nikolski, and 1500 km (940 mi) southwest of Anchorage. The volcano's most recent significant eruption began in February, 2001 and it produced 3 explosive events that produced ash clouds as high as 12 km (39,000 ft) above sea level. The 2001 eruption also produced a lava flow and hot avalanche that reached the sea. The last minor ash emission following an explosion was on May 5, 2013.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nchris@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\npavel@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Brief explosion on December 30. No ash cloud observed.","sentUtc":"2014-01-02","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2014-01-02T20:19:44-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2014-01-02T20:19:44-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2014-01-02T20:19:44-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20131231\/0722Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2013\/A21\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EBrief explosion from Cleveland Volcano detected at 4:06 UTC Dec. 31 (19:06 AKST, Dec. 30). No satellite images available after the time of the explosion, so uncertain if minor ash cloud generated, but unlikely. This explosion was similar to the explosion detected at 21:29 UTC December 28 (12:29 AKST). \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSimilar such explosions may continue without warning, and may produce minor ash clouds that are not expected to extend much beyond the volcano, but could produce local fallout on the flanks of the volcano. AVO has received no reports of activity from local observers.  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\npavel@gi.alaska.edu (907) 474-5269\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Brief explosion on December 30. No ash cloud observed.","sentUtc":"2013-12-31","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2013-12-31T07:22:48-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2013-12-31T07:22:48-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2013-12-31T07:22:48-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20131017\/2318Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVeniaminof  (VNUM #312070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2013\/A20\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 56 deg 11 min W 159 deg 23 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8225 ft (2507 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe eruption of Mount Veniaminof has paused. Seismic activity has decreased over the past week and satellite observations during periods of clear weather show no evidence of eruptive activity. AVO is lowering the Aviation Color Code to Yellow and the Volcano Alert Level to Advisory.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nIt is possible that this is only a temporary pause of activity in the eruption that began in June 2013, and that more vigorous activity could resume. Pauses in eruptive activity such as this are not uncommon at this volcano. AVO will continue to monitor the volcano closely.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMount Veniaminof volcano is an andesitic stratovolcano with an ice-filled 10-km diameter summit caldera located on the Alaska Peninsula, 775 km (480 mi) southwest of Anchorage and 35 km (22 mi) north of Perryville. Veniaminof is one of the largest (~ 300 km3) and most active volcanic centers in the Aleutian Arc and has erupted at least 13 times in the past 200 years. Recent significant eruptions of the volcano occurred in 1993-95 and 2005. Both were moderate Strombolian eruptions producing  intermittent low-level jets of incandescent lava fragments, and low-level emissions of steam and ash from the main intracaldera cone.  During the 1993-95 activity, a small lava flow was extruded into the summit caldera ice field producing an ice pit. Minor ash-producing explosions occurred in 2002, 2004, early 2005, November 2006, and February 2008. Previous historical eruptions have produced ash plumes that reached 6,000 m (20,000 ft) above sea level and ash fallout that blanketed areas within about 40 km (25 mi) of the volcano.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJanet Schaefer, Acting Coordinating Scientist, ADGGS\u003Cbr \/\u003E\r\njanet.schaefer@alaska.gov (907) 451-5005\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Eruption has paused. Unrest continues.","sentUtc":"2013-10-17","obs":"avo","vName":"Veniaminof","vnum":"312070","noticeId":"DOI-USGS-AVO-2013-10-17T23:18:50-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2013-10-17T23:18:50-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2013-10-17T23:18:50-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20131006\/1841Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVeniaminof  (VNUM #312070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2013\/A19\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 56 deg 11 min W 159 deg 23 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8225 ft (2507 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe eruption of Veniaminof resumed this morning. The Aviation Color Code has been increased to Orange and the Volcano Alert Level to Watch. Seismic tremor increased oner the past several hours, and highly elevated surface temperature were observed in satellite images this morning. Lava effusion has likely resumed, but no ash emissions have been observed in satellite images. Web camera images are obscured by clouds. This is a similar level of eruptive activity that first began in June 2013.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo ash emissions observed.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cbr \/\u003E\r\nMount Veniaminof volcano is an andesitic stratovolcano with an ice-filled 10-km diameter summit caldera located on the Alaska Peninsula, 775 km (480 mi) southwest of Anchorage and 35 km (22 mi) north of Perryville. Veniaminof is one of the largest (~ 300 km3) and most active volcanic centers in the Aleutian Arc and has erupted at least 13 times in the past 200 years. Recent significant eruptions of the volcano occurred in 1993-95 and 2005. Both were moderate Strombolian eruptions producing  intermittent low-level jets of incandescent lava fragments, and low-level emissions of steam and ash from the main intracaldera cone.  During the 1993-95 activity, a small lava flow was extruded into the summit caldera ice field producing an ice pit. Minor ash-producing explosions occurred in 2002, 2004, early 2005, November 2006, and February 2008. Previous historical eruptions have produced ash plumes that reached 6,000 m (20,000 ft) above sea level and ash fallout that blanketed areas within about 40 km (25 mi) of the volcano.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 378-7556\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Eruption resumes. Lava effusion, no ash detected","sentUtc":"2013-10-06","obs":"avo","vName":"Veniaminof","vnum":"312070","noticeId":"DOI-USGS-AVO-2013-10-06T18:41:27-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2013-10-06T18:41:27-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2013-10-06T18:41:27-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20130920\/2013Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVeniaminof  (VNUM #312070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2013\/A18\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 56 deg 11 min W 159 deg 23 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8225 ft (2507 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EBased on a decline in seismic activity and the lack of evidence of eruptive activity observed in satellite and web camera imagery over the past week, AVO is lowering the Aviation Color Code to Yellow and the Volcano Alert Level to Advisory.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nIt is possible that this is only a temporary waning of activity in the eruption that began in June 2013, and that more vigorous activity could resume.  Pauses in eruptive activity such as this are not uncommon at this volcano.  AVO will continue to monitor the volcano closely.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMount Veniaminof volcano is an andesitic stratovolcano with an ice-filled 10-km diameter summit caldera located on the Alaska Peninsula, 775 km (480 mi) southwest of Anchorage and 35 km (22 mi) north of Perryville. Veniaminof is one of the largest (~ 300 km3) and most active volcanic centers in the Aleutian Arc and has erupted at least 13 times in the past 200 years. Recent significant eruptions of the volcano occurred in 1993-95 and 2005. Both were moderate Strombolian eruptions producing  intermittent low-level jets of incandescent lava fragments, and low-level emissions of steam and ash from the main intracaldera cone.  During the 1993-95 activity, a small lava flow was extruded into the summit caldera ice field producing an ice pit. Minor ash-producing explosions occurred in 2002, 2004, early 2005, November 2006, and February 2008. Previous historical eruptions have produced ash plumes that reached 6,000 m (20,000 ft) above sea level and ash fallout that blanketed areas within about 40 km (25 mi) of the volcano.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 378-7556\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"AVO changed the color code to yellow based on absence of eruptive activity over the past week.","sentUtc":"2013-09-20","obs":"avo","vName":"Veniaminof","vnum":"312070","noticeId":"DOI-USGS-AVO-2013-09-20T20:13:44-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2013-09-20T20:13:44-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2013-09-20T20:13:44-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20130830\/1759Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVeniaminof  (VNUM #312070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2013\/A17\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 56 deg 11 min W 159 deg 23 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8225 ft (2507 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EIntense seismicity, lava fountaining, and ash emissions to 15,000 to 20,000 feet above sea level have been occurring at Veniaminof Volcano over the past several hours. The ongoing episode of activity is some of the strongest unrest detected so far during the eruption at the intracaldera cone of the volcano that began in early June. Although the activity at present is primarily lava fountaining and moderate ash emission, it is possible that conditions may continue to escalate, and higher rising, more ash rich plumes may be generated. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe ash plume associated with the current level of unrest is moving in a generally southerly direction and may result in trace amounts of ash fall on areas downwind of the volcano including Perryville and possibly the Chignik area. Ash fall amounts are not expected to be significant and likely will be less than 1\/16 inch, although areas within 1-2 miles of the eruption site could receive thicker amounts of ash fall. More information about volcanic ash and the effects of ash fall can be found on the AVO web page (www.avo.alaska.edu), or by calling AVO at 907-786-7497.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO is monitoring the volcano closely and may issue additional information about the status of activity as needed throughout the day.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 378-7556\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Intense seismic tremor, elevated surface temperatures, ash emission.","sentUtc":"2013-08-30","obs":"avo","vName":"Veniaminof","vnum":"312070","noticeId":"DOI-USGS-AVO-2013-08-30T17:59:54-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2013-08-30T17:59:54-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2013-08-30T17:59:54-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20130808\/2044Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2013\/A16\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESince June 26 2013, no lava or ash emissions have occurred at Pavlof Volcano and the volcano has exhibited gradually declining levels of unrest. Seismicity is now at background levels, and satellite images and web camera views of the volcano show no evidence of continuing lava or ash emission. Consequently, AVO is lowering the Aviation Color Code to GREEN and the Volcano Alert Level to NORMAL.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nRockfalls and small avalanches of debris may occur intermittently on the north-northwest flank of the volcano. Drainages leading away from the north flank of Pavlof are susceptible to small lahars and minor floods as long as hot material remains high on the slopes of the volcano where it could mix with ice and snow.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavlof has, in past eruptions, resumed activity after pauses as long as 55 days, and AVO continues to monitor the volcano closely for signs of renewed activity. We expect hours to days of increased seismicity prior to a resumption of eruptive activity. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof volcano is located on the southwestern end of the Alaska Peninsula. Pavlof is a stratovolcano which rises to an elevation of 8262 feet. With almost 40 historic eruptions, it is one of the most consistently active volcanos in the Aleutian arc. Eruptive activity is generally characterized by sporadic strombolian fountaining continuing for a several-month period. The community of Cold Bay is located 60 km (37 miles) to the southwest of Pavlof. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cbr \/\u003E\r\nChris Waythomas, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nchris@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 378-7556\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Based on lack of eruptive activity since June 26, Pavlof lowered to Aviation Color Code GREEN and Volcano Alert Level NORMAL.","sentUtc":"2013-08-08","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2013-08-08T20:44:16-00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2013-08-08T20:44:16-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2013-08-08T20:44:16-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20130703\/0011Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2013\/A15\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EOver the past two days, the eruptive activity at Pavlof has greatly declined. Seismic tremor and small discrete explosions are no longer detected in seismic and pressure sensor data. Satellite observations show no evidence of elevated surface temperatures, volcanic gas, or ash emissions. There have been no visual observations from pilots or from webcam images of any eruptive activity since June 26. Consequently, the Aviation Color Code is being reduced to Yellow and the Volcano Alert Level to Advisory.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDuring earlier periods of the current eruption and past eruptions of Pavlof, the style of eruptive activity has fluctuated from higher to lower levels. Such a fluctuation occurred during the current eruption on May 28, when eruptive activity paused until resuming on June 4. Therefore, the current pause in eruptive activity does not necessarily indicate that the eruption has ended. Renewed activity is possible, and may not be preceded by significant seismic activity. AVO will continue to monitor Pavlof closely.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof volcano is located on the southwestern end of the Alaska Peninsula. Pavlof is a stratovolcano which rises to an elevation of 8262 feet. With almost 40 historic eruptions, it is one of the most consistently active volcanos in the Aleutian arc. Eruptive activity is generally characterized by sporadic strombolian fountaining continuing for a several-month period. The community of Cold Bay is located 60 km (37 miles) to the southwest of Pavlof. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJanet Schaefer, Acting Coordinating Scientist,\u003Cbr \/\u003E\r\nAlaska Division of Geological and Geophysical Surveys\u003Cbr \/\u003E\r\njanet.schaefer@alaska.gov (907) 451-5005\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Based on absence of eruptive activity at Pavlof, Aviation Color Code reduced to Yellow and Volcano Alert Level to Advisory.","sentUtc":"2013-07-03","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2013-07-03T00:11:29-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2013-07-03T00:11:29-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2013-07-03T00:11:29-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20130613\/1749Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVeniaminof  (VNUM #312070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2013\/A14\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 56 deg 11 min W 159 deg 23 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8225 ft (2507 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EElevated surface temperatures observed in satellite images of Veniaminof Volcano this morning at 13:25 UTC (05:25 AKDT) indicate an eruption at the intracaldera cone is likely underway. AVO is thus raising the Aviation Color Code and Volcano Alert Level to ORANGE\/WATCH. Seismic tremor continues and is indicative of low-level effusive activity and small explosions. No ash plumes have been observed this morning although clouds have obscured web camera views of the summit.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO has been monitoring Veniaminof closely since elevated levels of seismicity became persistent on June 8. Steam plumes issuing from the intracaldera cone have been observed in web camera views since then, but so far no ash emissions have been confirmed.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nRecent eruptions of Veniaminof Volcano have all occurred from vents located on the intracaldera cone and were characterized by brief bursts of ash emission and small explosions. Ash plumes associated with this type of activity are typically diffuse and generally do not reach more than 20,000 feet above sea level. Ash fallout is typically limited to the flanks of the volcano. Minor emissions of steam and ash may persist for for weeks to months. The last episode of more energetic activity occurred in 1993-94 when an ash plume rose to about 18,000 feet above sea level and small lava flows poured onto glacier ice around the intracaldera cone. An eruption in 1983-84 produced an ash plume that reached about 25,000 feet above sea level.   \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njflarsen@alaska.edu (907) 474-7992\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Elevated surface temperatures indicate an eruption is likely underway.","sentUtc":"2013-06-13","obs":"avo","vName":"Veniaminof","vnum":"312070","noticeId":"DOI-USGS-AVO-2013-06-13T17:49:50-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2013-06-13T17:49:50-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2013-06-13T17:49:50-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20130608\/1812Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVeniaminof  (VNUM #312070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2013\/A13\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 56 deg 11 min W 159 deg 23 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8225 ft (2507 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EOver the past two days, AVO has detected gradually increasing seismic tremor beneath Veniaminof. We are therefore increasing the Aviation Color Code to Yellow and the Volcano Alert Level to Advisory. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nClear web-camera and satellite views currently show nothing unusual at the volcano. Similar seismic activity has been associated with ash emissions at Veniaminof in the past, most recently in 2005. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enil\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Enil\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMount Veniaminof volcano is an andesitic stratovolcano with an ice-filled 10-km diameter summit caldera located on the Alaska Peninsula, 775 km (480 mi) southwest of Anchorage and 35 km (22 mi) north of Perryville. Veniaminof is one of the largest (~ 300 km3) and most active volcanic centers in the Aleutian Arc and has erupted at least 13 times in the past 200 years. Recent significant eruptions of the volcano occurred in 1993-95 and 2005. Both were moderate Strombolian eruptions producing  intermittent low-level jets of incandescent lava fragments, and low-level emissions of steam and ash from the main intracaldera cone.  During the 1993-95 activity, a small lava flow was extruded into the summit caldera ice field producing an ice pit. Minor ash-producing explosions occurred in 2002, 2004, early 2005, and early November 2006. Previous historical eruptions have produced ash plumes that reached 6,000 m (20,000 ft) above sea level and ash fallout that blanketed areas within about 40 km (25 mi) of the volcano.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 378-7556\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Seismic tremor detected beneath Veniaminof.","sentUtc":"2013-06-08","obs":"avo","vName":"Veniaminof","vnum":"312070","noticeId":"DOI-USGS-AVO-2013-06-08T18:12:35-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2013-06-08T18:12:35-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2013-06-08T18:12:35-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20130604\/2311Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2013\/A12\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThere have been no explosions detected from Cleveland volcano since May 6, and there is no evidence for lava effusion since May 13. Weakly elevated surface temperatures detected in clear-weather satellite views are consistent with cooling of a newly emplaced lava flow. We are therefore lowering the Aviation Color Code to Yellow and the Volcano Alert Level to Advisory. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSudden explosions of blocks and ash are still possible with little or no warning. Ash clouds, if produced, could exceed 20,000 feet above sea level. If a large ash-producing event occurs, nearby seismic, infrasound, or volcanic lightning networks should alert AVO staff quickly. However, for some events, a delay of several hours is possible. Cleveland volcano does not have a local seismic network and is monitored using only distant seismic and infrasound instruments and satellite data.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\npavel@gi.alaska.edu (907) 474-5269\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Activity at Cleveland has declined since the last explosion on May 6 and the end of lava effusion around May 13.","sentUtc":"2013-06-04","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2013-06-04T23:11:34-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2013-06-04T23:11:34-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2013-06-04T23:11:34-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20130604\/2015Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2013\/A11\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAsh emissions have resumed at Pavlof starting at approximately 11:00 AKDT (19:00 UTC) this morning as seen in satellite data and observed by pilots. Weak seismicity beginning at 10:57 AKDT accompanied the emissions and is ongoing. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSatellite images show ash moving southeast, and pilot reports estimate cloud height at 19,000 ft asl. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E19,000 ft\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Emoving southeast\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\npavel@gi.alaska.edu (907) 474-5269\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Ash emissions have resumed at Pavlof volcano.","sentUtc":"2013-06-04","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2013-06-04T20:15:28-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2013-06-04T20:15:28-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2013-06-04T20:15:28-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20130528\/2050Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2013\/A10\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EOver the past three days, the eruptive activity at Pavlof have greatly declined. Seismic tremor and small discrete explosions are no longer detected in seismic and pressure sensor data. Satellite observations show no evidence of elevated surface temperatures, volcanic gas or ash emissions. There have been no visual observations from pilots or web cameras of any eruptive activity. Consequently, the Aviation Color Code is being reduced to Yellow and the Volcano Alert Level to Advisory.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDuring past eruptions of Pavlof, the style of eruptive activity fluctuated from higher to lower levels. Therefore, this pause in eruptive activity does not necessarily indicate that the eruption has ended. Renewed activity is possible, and may not be preceded by significant seismic activity. AVO will continue to monitor Pavlof closely.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone observed.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EChristopher Waythmas, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nchris@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPavel Izbekov, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\npavel@gi.alaska.edu (907) 474-5269\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Eruptive activity has stopped. Decrease in Aviation Color Code and Volcano Alert Level ","sentUtc":"2013-05-28","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2013-05-28T20:50:37-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2013-05-28T20:50:37-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2013-05-28T20:50:37-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20130513\/1938Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof  (VNUM #312030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2013\/A9\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 55 deg 25 min W 161 deg 53 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8261 ft (2518 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismic activity at Pavlof Volcano increased this morning commensurate with the presence of an intense thermal anomaly at the summit observed in latest satellite imagery.  Similar patterns of seismicity and elevated surface temperatures have previously signaled the onset of eruptive activity at Pavlof.  Although not yet visually confirmed, a low-level eruption of lava has likely begun from a summit vent.  No ash clouds have been detected.    \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPavlof volcano is located on the southwestern end of the Alaska Peninsula. Pavlof is a stratovolcano which rises to an elevation of 8262 feet. With almost 40 historic eruptions, it is one of the most consistently active volcanos in the Aleutian arc. Eruptive activity is generally characterized by sporadic strombolian fountaining continuing for a several-month period. The community of Cold Bay is located 60 km (37 miles) to the southwest of Pavlof.  The last eruption occurred in August 2007. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 378-7556\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Abrupt increase in seismic activity.  Thermal anomaly. Likely onset of lava eruption.","sentUtc":"2013-05-13","obs":"avo","vName":"Pavlof","vnum":"312030","noticeId":"DOI-USGS-AVO-2013-05-13T19:38:18-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2013-05-13T19:38:18-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2013-05-13T19:38:18-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20130509\/2116Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPagan  (VNUM #284170)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tU.S. Geological Survey\n\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2013\/N1\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 18 deg 7 min E 145 deg 48 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tNorthern Mariana Islands\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E1870 ft (570 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA gas and water vapor plume from Pagan was visible in satellite images over the past week. This is typical of recent months of observation of Pagan. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nBecause of this ongoing emission of volcanic gas from Pagan, it remains possible that residents of the CNMI may notice sulfurous odors under certain wind conditions.  Additional information about volcanic gas and vog can be found online at this address:  http:\/\/hvo.wr.usgs.gov\/hazards\/FAQ_SO2-Vog-Ash\/main.html\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPagan Volcano is not monitored with ground-based geophysical instrumentation and the only sources of information are satellite observations and occasional reports from observers who pass by or visit the island. We will continue to evaluate satellite imagery, on-island, and mariner reports when they become available, but because the volcano is not monitored with ground-based instruments, we cannot provide advanced warning of activity.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAccess to the island may be restricted by the CNMI government. Contact the EMO for the latest information. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nNo eruptive activity or significant unrest was detected at other volcanoes in Northern Mariana Islands this week.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Low-level unrest. Persistent plume of gas and water vapor. YELLOW\/ADVISORY. ","sentUtc":"2013-05-09","obs":"nmi","vName":"Pagan","vnum":"284170","noticeId":"DOI-USGS-NMI-2013-05-09T21:16:53-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2013-05-09T21:16:53-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2013-05-09T21:16:53-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20130504\/1413Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2013\/A8\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAVO infrasound detected a possible explosion at Cleveland Volcano this morning at 5:00AM AKDT )13:00 UTC). The infrasound signals suggest that this was a relatively short duration, low-level explosion.  No eruption cloud has been detected in available satellite views.  AVO received no other reports of activity.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Elow altitude\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western half of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. It is located about 75 km (45 mi.) west of the community of Nikolski, and 1500 km (940 mi.) southwest of Anchorage. The volcano's most recent significant eruption began in February, 2001 and it produced 3 explosive events that produced ash clouds as high as 12 km (39,000 ft) above sea level. The 2001 eruption also produced a rubbly lava flow and hot avalanche that reached the sea. The most recent minor ash emissions were observed in November 2012.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 378-7556\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Possible explosion detected by infrasound at 13:00UTC","sentUtc":"2013-05-04","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2013-05-04T14:13:56-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2013-05-04T14:13:56-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2013-05-04T14:13:56-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20130329\/2015Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ELittle Sitkin  (VNUM #311050)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2013\/A7\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 57 min E 178 deg 32 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E3898 ft (1188 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAVO can no longer seismically monitor the following volcanoes because of seismic station outages. As a result, AVO is unable to (1) assess whether these volcanoes may be building towards an eruption and (2) quickly confirm or dismiss reports of activity at these volcanoes.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nUgashik-Peulik\u003Cbr \/\u003E\r\nUkinrek Maars\u003Cbr \/\u003E\r\nLittle Sitkin\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nBecause these volcanoes are no longer seismically monitored, they will move from volcano alert level Normal and aviation color code Green to \u0022unassigned.\u0022 As at other volcanoes without real-time seismic networks, AVO will continue to use satellite data, infrasound, and reports from pilots and ground observers to detect signs of eruptive activity.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cbr \/\u003E\r\nJohn Power Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 378-7556\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Little Sitkin moved from volcano alert level Normal and aviation color code Green to \u0022unassigned\u0022 because of seismic station outages.","sentUtc":"2013-03-29","obs":"avo","vName":"Little Sitkin","vnum":"311050","noticeId":"DOI-USGS-AVO-2013-03-29T20:15:53-00:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2013-03-29T20:15:53-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2013-03-29T20:15:53-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20130329\/2013Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUkinrek Maars  (VNUM #312131)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2013\/A6\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 57 deg 50 min W 156 deg 30 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E299 ft (91 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAVO can no longer seismically monitor the following volcanoes because of seismic station outages. As a result, AVO is unable to (1) assess whether these volcanoes may be building towards an eruption and (2) quickly confirm or dismiss reports of activity at these volcanoes.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nUgashik-Peulik\u003Cbr \/\u003E\r\nUkinrek Maars\u003Cbr \/\u003E\r\nLittle Sitkin\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nBecause these volcanoes are no longer seismically monitored, they will move from volcano alert level Normal and aviation color code Green to \u0022unassigned.\u0022 As at other volcanoes without real-time seismic networks, AVO will continue to use satellite data, infrasound, and reports from pilots and ground observers to detect signs of eruptive activity.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cbr \/\u003E\r\nJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 378-7556\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Ukinrek Maars moved from volcano alert level Normal and aviation color code Green to \u0022unassigned\u0022 because of seismic station outages.","sentUtc":"2013-03-29","obs":"avo","vName":"Ukinrek Maars","vnum":"312131","noticeId":"DOI-USGS-AVO-2013-03-29T20:13:49-00:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2013-03-29T20:13:49-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2013-03-29T20:13:49-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20130329\/2007Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUgashik-Peulik  (VNUM #312130)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2013\/A5\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 57 deg 45 min W 156 deg 22 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E4836 ft (1474 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAVO can no longer seismically monitor the following volcanoes because of seismic station outages. As a result, AVO is unable to (1) assess whether these volcanoes may be building towards an eruption and (2) quickly confirm or dismiss reports of activity at these volcanoes.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nUgashik-Peulik\u003Cbr \/\u003E\r\nUkinrek Maars\u003Cbr \/\u003E\r\nLittle Sitkin\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nBecause these volcanoes are no longer seismically monitored, they will move from volcano alert level Normal and aviation color code Green to \u0022unassigned.\u0022 As at other volcanoes without real-time seismic networks, AVO will continue to use satellite data, infrasound, and reports from pilots and ground observers to detect signs of eruptive activity. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cbr \/\u003E\r\nJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 378-7556\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Ugashik-Peulik moved from volcano alert level Normal and aviation color code Green to \u0022unassigned\u0022 because of seismic station outages.","sentUtc":"2013-03-29","obs":"avo","vName":"Ugashik-Peulik","vnum":"312130","noticeId":"DOI-USGS-AVO-2013-03-29T20:07:19-00:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2013-03-29T20:07:19-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2013-03-29T20:07:19-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20130308\/1940Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2013\/A4\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe summit lava dome extruded in late January 2013 has remained unchanged since the last color code change on February 6, 2013.  Anomalous surface temperatures prevalent in late January through mid-February declined and the last thermal anomaly observed in satellite imagery was reported on February 26.  Although satellite viewing conditions at Cleveland are typically cloudy, clear views between March 1 and 5 indicate no change has occurred in the summit dome and thermal anomalies no longer are present.  Therefore, the Aviation Color Code and Volcano Alert Level for Cleveland is lowered to YELLOW\/ADVISORY.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe last confirmed explosion at Cleveland occurred in November, 2012. The presence of a lava dome in the summit crater means that explosions of blocks and ash could occur with little or no warning. Ash clouds, if produced, could exceed 20,000 feet above sea level. If a large ash-producing event occurs, nearby seismic, infrasound, or volcanic lightning networks should alert AVO staff. However, for some events, a delay of several hours is possible. There is no real-time seismic monitoring network on Mount Cleveland and AVO is unable to track activity in real time.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nchris@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 378-7556\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No recent thermal anomalies or changes in lava dome prompts lowering of Color Code\/Alert Level to YELLOW\/ADVISORY ","sentUtc":"2013-03-08","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2013-03-08T19:40:58-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2013-03-08T19:40:58-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2013-03-08T19:40:58-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20130206\/2118Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2013\/A3\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESatellite data obtained on January 30 indicate that a lava dome has grown in the summit crater of Cleveland Volcano warranting a change in aviation color code and volcano alert level to ORANGE\/WATCH. As of January 30 the dome was about 100 m in diameter and may have begun forming as early as January 24 when elevated surface temperatures were observed in satellite images. The size and shape of the dome appears to be unchanged through February 2 according to the most recently available satellite data. AVO has received no reports of activity or ash emissions since elevated surface temperatures were first observed around the 24th of January.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe development of a lava dome in the summit crater indicates that sudden explosions of blocks and ash are possible with little or no warning. Ash clouds, if produced, could exceed 20,000 feet above sea level. If a large ash-producing event occurs, nearby seismic, infrasound, or volcanic lightning networks should alert AVO staff quickly. However, for some events, a delay of several hours is possible. There is no real-time seismic monitoring network on Mount Cleveland and AVO is unable to track activity in real time.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western half of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. It is located about 75 km (45 mi.) west of the community of Nikolski, and 1500 km (940 mi.) southwest of Anchorage. The volcano's most recent significant eruption began in February, 2001 and it produced 3 explosive events that produced ash clouds as high as 12 km (39,000 ft) above sea level. The 2001 eruption also produced a rubbly lava flow and hot avalanche that reached the sea. The most recent minor ash emissions were observed in November 2012.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nchris@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 378-7556\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Lava dome detected in satellite images of Cleveland. AVO has received no further reports of activity.","sentUtc":"2013-02-06","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2013-02-06T21:18:23-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2013-02-06T21:18:23-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2013-02-06T21:18:23-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20130109\/2310Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ELittle Sitkin  (VNUM #311050)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2013\/A2\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 57 min E 178 deg 32 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E3898 ft (1188 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EVolcanic unrest at Little Sitkin Volcano has decreased over the past several months, and the Alaska Volcano Observatory now considers it to have reached typical background levels. Thus, the Aviation Color Code has been reduced to Green and the Volcano Alert Level had been reduced to Normal.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 378-7556\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Volcanic unrest decreased to background levels.","sentUtc":"2013-01-09","obs":"avo","vName":"Little Sitkin","vnum":"311050","noticeId":"DOI-USGS-AVO-2013-01-09T23:10:23-00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2013-01-09T23:10:23-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2013-01-09T23:10:23-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20130109\/2308Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EIliamna  (VNUM #313020)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2013\/A1\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 1 min W 153 deg 5 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10016 ft (3053 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EVolcanic unrest at Iliamna volcano has decreased over the past several months, and the Alaska Volcano Observatory now considers it to have reached typical background levels. Thus, the Aviation Color Code has been reduced to Green and the Volcano Alert Level had been reduced to Normal. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nOccasional small earthquakes continue, but at a greatly reduced rate and magnitude relative to the peak of unrest in March 2012. Steam and sulfur gas emissions continue to be observed from sites near the summit during periods of favorable meteorological conditions, but are not unusual at Iliamna. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 378-7556\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Volcanic unrest has returned to background levels.","sentUtc":"2013-01-09","obs":"avo","vName":"Iliamna","vnum":"313020","noticeId":"DOI-USGS-AVO-2013-01-09T23:08:39-00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2013-01-09T23:08:39-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2013-01-09T23:08:39-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20121121\/1650Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2012\/A13\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo further explosions have been detected at Cleveland since November 10, 2012. There is no evidence of renewed lava-dome growth since that time. Therefore, AVO is lowering the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFurther sudden explosions of blocks and ash remain possible with little or no warning. Ash clouds, if produced, could exceed 20,000 feet above sea level. If a large ash-producing event occurs, nearby seismic, infrasound, or volcanic lightning networks should alert AVO staff quickly.  However, for some events, a delay of several hours is possible. There is no real-time seismic monitoring network on Mount Cleveland and AVO is unable to track activity in real time. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cbr \/\u003E\r\nCleveland volcano forms the western half of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. It is located about 75 km (45 mi.) west of the community of Nikolski, and 1500 km (940 mi.) southwest of Anchorage. The volcano's most recent significant eruption began in February, 2001 and it produced 3 explosive events that produced ash clouds as high as 12 km (39,000 ft) above sea level. The 2001 eruption also produced a rubbly lava flow and hot avalanche that reached the sea. The most recent minor ash emissions were observed in December 2011.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 378-7556\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Aviation Color Code lowered to YELLOW and Volcano Alert Level changed to ADVISORY. No explosions or renewed lava-dome growth since November 10.","sentUtc":"2012-11-21","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2012-11-21T16:50:19-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2012-11-21T16:50:19-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2012-11-21T16:50:19-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20121111\/0440Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2012\/A12\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA small ash cloud from Cleveland Volcano was detected in satellite views beginning today, Nov. 10, at 11:47AM AST (20:47 UTC) drifting slowly toward the ENE from the summit.  The ash cloud was last observed about 60 miles south of Dutch Harbor at 18:43 AST, Nov. 10 (03:43 UTC Nov 11). AVO has received no other reports of activity at the volcano.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSudden explosions of blocks and ash remain possible with little or no warning.  The previous confirmed explosion occurred on August 20. Ash clouds, if produced, could exceed 20,000 feet above sea level. If a large ash-producing event occurs, nearby seismic, infrasound, or volcanic lightning networks should alert AVO staff quickly.  However, for some events, a delay of several hours is possible. There is no real-time seismic monitoring network on Mount Cleveland and AVO is unable to track activity in real time.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E18,000 to 22,000ft based on Puff.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western half of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. It is located about 75 km (45 mi.) west of the community of Nikolski, and 1500 km (940 mi.) southwest of Anchorage. The volcano's most recent significant eruption began in February, 2001 and it produced 3 explosive events that produced ash clouds as high as 12 km (39,000 ft) above sea level. The 2001 eruption also produced a rubbly lava flow and hot avalanche that reached the sea. Before this event, the most recent minor ash emissions were observed in August 2012.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 378-7556\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":" Small ash cloud at Cleveland volcano. ","sentUtc":"2012-11-11","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2012-11-11T04:40:22-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2012-11-11T04:40:22-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2012-11-11T04:40:22-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20120905\/2014Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2012\/A11\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESatellite views of Cleveland since the last explosion on 20 August show no evidence of further eruptive activity. The last confident satellite detection of fresh lava within the summit crater was in early May.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nBased on the apparent hiatus in lava effusion and explosions, it is possible that the current episode of eruptive activity has paused.  Therefore, AVO is lowering the Aviation Color Code and Alert Level to Yellow\/Advisory. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDespite this downgrade, sudden explosions of blocks and ash remain possible with little or no warning. Associated ash clouds could exceed 20,000 feet above sea level. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nIf a large ash-producing event occurs, nearby seismic, infrasound, or volcanic lightning networks should alert AVO staff quickly.  However, for some events, a delay of several hours is possible. There is no real-time seismic monitoring network on Mount Cleveland and AVO is unable to track activity in real time.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western half of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. It is located about 75 km (45 mi.) west of the community of Nikolski, and 1500 km (940 mi.) southwest of Anchorage. The volcano's most recent significant eruption began in February, 2001 and it produced 3 explosive events that produced ash clouds as high as 12 km (39,000 ft) above sea level. The 2001 eruption also produced a rubbly lava flow and hot avalanche that reached the sea. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497 \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff.freymueller@gi.alaska.edu (907) 978-5458\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No activity reported since 20 August.  ","sentUtc":"2012-09-05","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2012-09-05T20:14:49-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2012-09-05T20:14:49-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2012-09-05T20:14:49-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20120830\/1220Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ELittle Sitkin  (VNUM #311050)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2012\/A10\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 57 min E 178 deg 32 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E3898 ft (1188 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAt approximately 19:15 AKDT (04:15 UTC) last night, a swarm of high-frequency earthquakes began at Little Sitkin Volcano.  The continuation of this anomalous seismic activity through the night prompts AVO to raise the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.  No eruptive activity is currently indicated.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO is closely monitoring the situation and will issue further updates as conditions changes.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nLittle Sitkin is monitored by a 4-station seismic network as well as satellite imagery.  Little Sitkin Island is located 35 km (21 mi) northwest of Amchitka and 320 km (200 mi) west of Adak in the remote western Aleutian Islands.  The last eruption of Little Sitkin is questionable and may have been in the early 1900s. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJeff Freymueller, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njeff@giseis.alaska.edu (907) 474-7286\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Sudden onset and continuing seismicity prompt Color Code\/Volcano Alert Level YELLOW\/ADVISORY. ","sentUtc":"2012-08-30","obs":"avo","vName":"Little Sitkin","vnum":"311050","noticeId":"DOI-USGS-AVO-2012-08-30T12:20:46-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2012-08-30T12:20:46-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2012-08-30T12:20:46-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20120619\/2306Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2012\/A9\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA pilot report, web camera image, and infrasound data indicate an ash producing explosion occurred at Cleveland Volcano today around 22:05 UTC (14:05 AKDT). The pilot report suggests the cloud height is 35,000 feet (10 km) above sea level. Infrasound data indicate the eruption is short in duration.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAdditional sudden explosions of blocks and ash are still possible with little warning. It is possible for associated ash clouds to exceed 20,000 feet above sea level. If a large ash-producing event occurs, seismic, infrasound, or volcanic lightning networks should detect the event and alert AVO staff. There is no real-time seismic monitoring network on Mount Cleveland so AVO is unable to track activity in real time.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EEstimated at 35,000 ft\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western half of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. It is located about 75 km (45 mi.) west of the community of Nikolski, and 1500 km (940 mi.) southwest of Anchorage. The volcano's most recent significant eruption began in February, 2001 and it produced 3 explosive events that produced ash clouds as high as 12 km (39,000 ft) above sea level. The 2001 eruption also produced a rubbly lava flow and hot avalanche that reached the sea. The most recent minor ash emissions were observed in December 2011.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Small ash emission at Cleveland. Color code to orange.","sentUtc":"2012-06-19","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2012-06-19T23:06:14-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2012-06-19T23:06:14-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2012-06-19T23:06:14-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20120530\/1911Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2012\/A8\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo explosions or renewed lava-dome growth have been detected at Cleveland since May 9, 2012. There are no indications of heightened activity in any other data streams.  Therefore, AVO is lowering the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAdditional sudden explosions of blocks and ash are still possible with little warning. It is possible for associated ash clouds to exceed 20,000 feet above sea level. If a large ash-producing event occurs, seismic, infrasound, or volcanic lightning networks should detect the event and alert AVO staff. There is no real-time seismic monitoring network on Mount Cleveland so AVO is unable to track activity in real time.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cbr \/\u003E\r\nCleveland volcano forms the western half of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. It is located about 75 km (45 mi.) west of the community of Nikolski, and 1500 km (940 mi.) southwest of Anchorage. The volcano's most recent significant eruption began in February, 2001 and it produced 3 explosive events that produced ash clouds as high as 12 km (39,000 ft) above sea level. The 2001 eruption also produced a rubbly lava flow and hot avalanche that reached the sea. The most recent minor ash emissions were observed in January and June 2009.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No changes observed since May 9.  Decreased color code\/Alert level to YELLOW\/ADVISORY","sentUtc":"2012-05-30","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2012-05-30T19:11:29-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2012-05-30T19:11:29-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2012-05-30T19:11:29-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20120328\/2316Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2012\/A7\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ERecent satellite views show that a another lava dome has formed in the summit crater over the past week. AVO is raising the volcano color code to ORANGE and volcano alert level to WATCH to reflect this increase in activity. AVO has received no other reports of activity at the volcano. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWhile the volcano remains active, additional sudden explosions of blocks and ash are likely. It is possible for associated ash clouds to exceed 20,000 feet above sea level. If a larger ash-producing event occurs, seismic, infrasound, or volcanic lightning networks should detect the event and alert AVO staff. There is no real-time seismic monitoring network on Mount Cleveland so AVO is unable to track activity in real time.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone observed.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone observed.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western half of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. It is located about 75 km (45 mi.) west of the community of Nikolski, and 1500 km (940 mi.) southwest of Anchorage. The volcano's most recent significant eruption began in February, 2001 and it produced 3 explosive events that produced ash clouds as high as 12 km (39,000 ft) above sea level. The 2001 eruption also produced a rubbly lava flow and hot avalanche that reached the sea. The most recent minor ash emissions were observed in January and June 2009.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"New summit lava dome detected at Cleveland.","sentUtc":"2012-03-28","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2012-03-28T23:16:38-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2012-03-28T23:16:38-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2012-03-28T23:16:38-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20120323\/1800Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2012\/A6\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo further explosions have been detected at Cleveland since March 13, and we have no evidence that lava-dome growth has renewed since then. Therefore, we are lowering the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nRecent explosions were detected by seismic and infrasound networks, but clouds prevented observation of the resulting plumes in satellite images. Absence of significant deposits on the volcano suggest that the explosions have been relatively ash-poor.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAdditional sudden explosions of blocks and ash are still possible with little warning.  It is possible for associated ash clouds to exceed 20,000 feet above sea level.  If a larger ash-producing event occurs, seismic, infrasound, or volcanic lightning networks should detect the event and alert AVO staff.  There is no real-time seismic monitoring network on Mount Cleveland so AVO is unable to track activity in real time.  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No further explosions have been detected at Cleveland.","sentUtc":"2012-03-23","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2012-03-23T18:00:41-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2012-03-23T18:00:41-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2012-03-23T18:00:41-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20120309\/2202Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EIliamna  (VNUM #313020)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2012\/A5\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 1 min W 153 deg 5 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10016 ft (3053 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EOver the past three months the earthquake rate at Iliamna Volcano has steadily increased and now exceeds normal background levels.  Although it is not certain that this sustained increase in earthquake activity represents the movement of magma at depth, it is a significant change and AVO has increased the Alert Level to Advisory and the Aviation Color Code to Yellow.  The current activity does not mean an eruption is imminent or certain. A similarly energetic episode of seismic unrest from September 1996 to February 1997 was likely related to the intrusion of new magma at depth, but an eruption did not occur.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO will continue to observe Iliamna closely, will conduct additional investigations and report on them as warranted.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENone\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EIliamna Volcano is located on the western side of lower Cook Inlet in Lake Clark National Park and Preserve. The volcano has a summit altitude of 3053 m (10,016 feet) above sea level and the volcanic edifice supports an extensive cover of snow and glacier ice. An active fumarole field is present on the upper eastern face of the volcano and on calm days, vapor emissions are often visible. There have been no known historical eruptions of Iliamna Volcano, but volcanic deposits preserved on the flanks of the volcano indicate that there have been multiple episodes of explosive eruptive activity in the past 2500 years and the most recent explosive event occurred about 300 years ago. Occasional large ice and rock avalanches, and changes in glacial ice have been observed in the past at Iliamna, but are not directly related to volcanic activity. The volcano is located 210 km (130 miles) southwest of Anchorage and 100 km (60 miles) northwest of Homer.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cbr \/\u003E\r\nDavid Schneider, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ndjschneider@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Seismic activity has increased above background","sentUtc":"2012-03-09","obs":"avo","vName":"Iliamna","vnum":"313020","noticeId":"DOI-USGS-AVO-2012-03-09T22:02:40-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2012-03-09T22:02:40-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2012-03-09T22:02:40-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20120302\/2017Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EKanaga  (VNUM #311110)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2012\/A4\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min W 177 deg 9 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E4288 ft (1307 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe level of unrest at Kanaga Volcano has declined to background levels and AVO is reducing the Aviation Color Code and Volcano Alert Level to Green\/Advisory.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nA brief period of elevated seismicity and an associated minor ash emission were detected on February 18. A minor increase in seismicity also occurred on February 24, but had no confirmed associated ash emission. Since then the level of unrest has declined to background levels.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No unusual activity detected in past 24 hours.","sentUtc":"2012-03-02","obs":"avo","vName":"Kanaga","vnum":"311110","noticeId":"DOI-USGS-AVO-2012-03-02T20:17:21-00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2012-03-02T20:17:21-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2012-03-02T20:17:21-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20120218\/2211Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EKanaga  (VNUM #311110)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2012\/A3\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 51 deg 55 min W 177 deg 9 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E4288 ft (1307 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EPossible explosive activity and a likely ash cloud indicate new unrest at Kanaga Volcano.  AVO is increasing the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nVolcanic tremor was detected from 15:23-15:27 UTC (6:23 AM AKST) followed by numerous small events for about an hour at Kanaga Volcano. A possible weak ash cloud was also detected in AVHRR satellite data from 15:35 UTC about 39 km (24 mi) NE of the volcano.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThis new unrest indicates a possibility for sudden explosions of ash to occur at any time, and ash clouds exceeding 20,000 feet above sea level may develop. If a large, explosive, ash-producing event occurs, the local seismic network, satellite ash alarms, infrasound, and volcanic lightning will alert AVO to the new activity.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EKanaga Volcano occupies the northern corner of Kanaga Island, one of the most southerly members of the central Aleutian chain. It is a symmetric composite cone 1307 m high and 4.8 km in diameter at sea level, built of interbedded basaltic and andesitic lava flows, scoria layers, and pyroclastic rocks. Kanaga Volcano last erupted 1994-1995 when observed eruptive plumes were relatively dilute, rising to altitudes of less than 3 km (9,840 ft) and dropping ash onto the flanks of the volcano. At least two significant ash plumes were recorded over the course of this eruption: the first, to ~7.5 km (24,600 ft) occurred on February 21, 1995 and the second on August 18,1995, when an eruption cloud reached ~4.5 km (14,760 ft). A light dusting of ash fell on the community of Adak and air traffic was disrupted due to continuing low-level activity and cloudy conditions which prevented visual approaches to the Adak air field.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Elevated seismicity and a possible low-level ash cloud","sentUtc":"2012-02-18","obs":"avo","vName":"Kanaga","vnum":"311110","noticeId":"DOI-USGS-AVO-2012-02-18T22:11:58-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2012-02-18T22:11:58-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2012-02-18T22:11:58-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20120201\/0021Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2012\/A2\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ERenewed eruptive activity of Cleveland Volcano has been observed in satellite data, and AVO is raising the Aviation Color Code to Orange and the Alert Level to Watch. A new lava dome has been observed in the summit crater, and as of 30 January 2012 was approximately 40 meters (130 feet) in diameter. There have been no observations of ash emissions or explosive activity during this current lava eruption.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe lava dome that formed throughout the fall-winter of 2011 was largely removed by the explosive activity on 25 and 29 December, 2011. It remains possible for intermittent, sudden explosions of blocks and ash to occur at any time, and ash clouds exceeding 20,000 feet above sea level may develop. Such explosions and their associated ash clouds may go undetected in satellite imagery for hours. If a large, explosive, ash-producing event occurs, seismic, infrasound, or volcanic lightning may be detected by local and regional monitoring networks. There is no real-time seismic monitoring network on Mount Cleveland.     \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAdditional information on Cleveland Volcano and the current activity may be found at this link:\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\/activity\/Cleveland.php\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPlease see http:\/\/www.avo.alaska.edu\/color_codes.php for complete definitions of Aviation color codes and Volcano alert levels.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo volcanic cloud observed.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western half of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. It is located about 75 km (45 mi.) west of the community of Nikolski, and 1500 km (940 mi.) southwest of Anchorage. The volcano's most recent significant eruption began in February, 2001 and it produced 3 explosive events that produced ash clouds as high as 12 km (39,000 ft) above sea level. The 2001 eruption also produced a rubbly lava flow and hot avalanche that reached the sea.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Satellite observations indicate renewed eruptive activity. As of 30 January, a new lava dome has been erupted in the summit crater. No ash emissions or explosions.","sentUtc":"2012-02-01","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2012-02-01T00:21:30-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2012-02-01T00:21:30-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2012-02-01T00:21:30-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20120127\/2321Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EWrangell  (VNUM #315020)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2012\/A1\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 62 deg  W 144 deg 1 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tWrangell Volcanic Field\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E14163 ft (4317 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAVO can no longer seismically monitor Wrangell volcano because of seismic station outages. As a result, AVO is unable to assess seismic activity at this volcano. As at other volcanoes without real-time seismic networks, AVO will continue to use satellite data and reports from pilots and ground observers to detect signs of eruptive activity. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nBecause Wrangell is no longer seismically monitored, we are changing both the Volcano Alert Level from Normal and Aviation Color Code from Green to \u0022UNASSIGNED\u0022. Wrangell will likely remain without real-time seismic monitoring until the summer of 2012, when necessary upgrades to the network will occur. \u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMt. Wrangell is a 4317 m (14,163 ft) high, andesitic, shield volcano with an ice-filled summit caldera, located in the Wrangell-St. Elias National Park and Preserve. Mt. Wrangell has three small post-caldera craters, named North Crater, East Crater, and Mt. Zanetti.  These craters are all geothermally active, and there are frequent historical reports of steam from Mt. Wrangell.  There are also several questionable reports of historical eruptive activity.  Mt. Wrangell is 330 km (206 mi) northeast of Anchorage.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"The Wrangell seismic network is out so we are removing it from our list of monitored volcanoes.","sentUtc":"2012-01-27","obs":"avo","vName":"Wrangell","vnum":"315020","noticeId":"DOI-USGS-AVO-2012-01-27T23:21:16-00:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2012-01-27T23:21:16-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2012-01-27T23:21:16-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20111230\/2257Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2011\/A8\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ECleveland Volcano is has been lowered to aviation color code YELLOW and alert level ADVISORY.  No new explosive activity has been observed at the volcano since  yesterday morning.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nA detached drifting ash cloud from the volcano was detected early yesterday morning in satellite imagery.  Ground coupled air waves from the explosion were detected at a distant seismic network located on Okmok Volcano that place the time of the explosion from Cleveland at 13:12 UTC, Dec. 29. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nIntermittent lava eruption from late July through early October emplaced a dome at the summit.  There is a possibility that effusion could resume and send lava over the crater rim and down the steep flanks of the volcano. Such lava flows might collapse and produce avalanches of hot debris that reach the sea and may be accompanied by small ash clouds.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nMore sudden explosions producing ash or ejecting blocks could also occur with plumes exceeding 20,000 feet above sea level. Such explosions and their associated ash clouds may go undetected in satellite imagery for hours. However, in cooperation with the University of Washington, AVO has implemented a lightning alarm system that may detect significant ash-producing events within minutes of onset. If a large explosive event occurs, seismic signals may be recorded on AVO seismic networks at nearby volcanoes. There is no real-time seismic monitoring network at Cleveland.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAdditional information on Cleveland Volcano and the current activity may be found at this link:\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\/activity\/Cleveland.php\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPlease see http:\/\/www.avo.alaska.edu\/color_codes.php for complete definitions of Aviation color codes and Volcano alert levels.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western half of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. It is located about 75 km (45 mi.) west of the community of Nikolski, and 1500 km (940 mi.) southwest of Anchorage. The volcano's most recent significant eruption began in February, 2001 and it produced 3 explosive events that produced ash clouds as high as 12 km (39,000 ft) above sea level. The 2001 eruption also produced a rubbly lava flow and hot avalanche that reached the sea. The most recent minor ash emissions were observed in January and June 2009.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nChris Nye, Acting Coordinating Scientist\u003Cbr \/\u003E\r\ncnye@giseis.alaska.edu (907) 474-7430\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No new explosive activity has been detected at Cleveland. Continued activity uncertain. ","sentUtc":"2011-12-30","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2011-12-30T22:57:44-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2011-12-30T22:57:44-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2011-12-30T22:57:44-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20111229\/1655Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2011\/A7\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA detached drifting ash cloud to approximately 15,000 ft ASL has been detected at Cleveland Volcano in satellite images from 1402 UTC, Dec 29. As of 1445 UTC the ash cloud was approximately 80 KM\/50 miles moving ESE from the volcano.   \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nBased on the presence of an ash cloud, AVO has raised the aviation color code at Cleveland Volcano to ORANGE and alert level WATCH.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSatellite data indicate that this is a single explosion event, however, more sudden explosions producing ash could occur with plumes exceeding 20,000 feet above sea level. Such explosions and their associated ash clouds may go undetected in satellite imagery for hours. However, in cooperation with the University of Washington, AVO has implemented a lightning alarm system that may detect significant ash-producing events within minutes of onset. If a large explosive event occurs, seismic signals may be recorded on AVO seismic networks at nearby volcanoes. There is no real-time seismic monitoring network at Cleveland.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAdditional information on Cleveland Volcano and the current activity may be found at this link:\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\/activity\/Cleveland.php\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPlease see http:\/\/www.avo.alaska.edu\/color_codes.php for complete definitions of Aviation color codes and Volcano alert levels.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E15,000 ft\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Edetached plume moving ESE from the volcano\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western half of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. It is located about 75 km (45 mi.) west of the community of Nikolski, and 1500 km (940 mi.) southwest of Anchorage. The volcano's most recent significant eruption began in February, 2001 and it produced 3 explosive events that produced ash clouds as high as 12 km (39,000 ft) above sea level. The 2001 eruption also produced a rubbly lava flow and hot avalanche that reached the sea. The most recent minor ash emissions were observed in January and June 2009.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nChris Nye, Acting Coordinating Scientist\u003Cbr \/\u003E\r\ncnye@giseis.alaska.edu (907) 474-7430\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"An ash plume to 15,000 ft has been detected at Cleveland. Continued activity uncertain. ","sentUtc":"2011-12-29","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2011-12-29T16:55:35-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2011-12-29T16:55:35-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2011-12-29T16:55:35-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20111103\/1916Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2011\/A6\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESatellite observations of Cleveland Volcano over the past three weeks have consistently indicated that the lava dome in the summit crater has not significantly changed in size indicating that the slow eruption of lava may have paused or stopped. Thermal features also observed in satellite data indicate that the lava dome remains hot. When atmospheric conditions permit, thermal features at the summit will be detected until the lava dome cools.  Based on satellite observations indicating no significant change in the size of the lava dome, and no reports of explosive activity or ash emission, AVO is lowering the Aviation Color Code and Volcano Alert Level to YELLOW\/ADVISORY.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nIt is possible for effusion of lava to resume at any time and continued production of lava in the summit crater could result in lava flows that overtop the crater rim and flow down the flanks of the volcano. Such lava flows could collapse and produce avalanches of hot debris that reach the sea and may be accompanied by small ash clouds.  A sudden explosion and ash cloud exceeding 20,000 feet above sea level could also occur. Such explosions may go undetected in satellite imagery for hours. However, in cooperation with the University of Washington, AVO has implemented a lightning alarm system that may detect significant ash-producing events within minutes of onset. If a large explosive event occurs, seismic signals may be recorded on AVO seismic networks at nearby volcanoes; however, there is no real-time seismic network on Mt. Cleveland. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAdditional information on Cleveland Volcano and the current activity may be found at this link:\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\/activity\/Cleveland.php\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No eruptive activity observed. ","sentUtc":"2011-11-03","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2011-11-03T19:16:04-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2011-11-03T19:16:04-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2011-11-03T19:16:04-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20111006\/2120Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPagan  (VNUM #284170)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tU.S. Geological Survey\n\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2011\/N3\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 18 deg 7 min E 145 deg 48 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tNorthern Mariana Islands\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E1870 ft (570 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EClear to partly cloudy satellite images showed a persistent gas and steam plume extending from Pagan Volcano throughout the past week. The plume was similar in character to those observed the previous week. USGS has received no other reports of unrest or activity at the volcano this week.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPagan Volcano is not monitored with ground-based geophysical instrumentation and the only sources of information are satellite observations and occasional reports from observers who pass by or visit the island. We will continue to evaluate satellite imagery, on-island, and mariner reports when they become available, but because the volcano is not monitored with ground-based instruments, we cannot provide advanced warning of activity.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAccess to the island may be restricted by the CNMI government. Contact the EMO for the latest information. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nNo eruptive activity or significant unrest has been detected at other volcanoes in Northern Mariana Islands this week.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUSGS Northern Marianas Duty Scientist (808) 967-8815\u003Cbr \/\u003E\r\nhttp:\/\/volcano.wr.usgs.gov\/cnmistatus.php\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCNMI Emergency Management Office (670) 322-8001\u003Cbr \/\u003E\r\nhttp:\/\/www.cnmiemo.gov.mp\/\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"YELLOW\/ADVISORY. Persistent steam\/gas plume.","sentUtc":"2011-10-06","obs":"nmi","vName":"Pagan","vnum":"284170","noticeId":"DOI-USGS-NMI-2011-10-06T21:20:13-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2011-10-06T21:20:13-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2011-10-06T21:20:13-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20110907\/0008Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2011\/A5\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EObservations of Cleveland Volcano from Tuesday September 6, 2011 show that the small lava dome in the summit crater has resumed growth and now fills the floor of the crater.  In response, AVO is raising the Aviation Color Code to Orange and the Alert Level to Watch. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nA persistent thermal anomaly has been observed since September 3, probably marking the timing of resumed lava dome growth.  The size of the dome as of August 30 when it appeared to have stopped growing was approximately 80 meters (262 feet)in diameter.  The current dome is approximately 120 meters (394 feet) in diameter.  If dome growth continues, lava flows onto the flanks of the volcano may develop but would not be hazardous to aviation. The presence of the lava dome increases the possibility of an explosive eruption, but does not necessarily indicate that one will occur. Short-lived explosions could produce an ash cloud that exceeds 20,000 ft above sea level. These events can occur without warning and may go undetected in satellite imagery for hours.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWithout a real-time seismic network on the volcano, AVO is unable to track local earthquake activity related to volcanic unrest, provide forecasts of eruptive activity, or confirmation of explosive, ash-producing events. AVO will continue to monitor the volcano using satellite data as it becomes available.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Thermal anomalies and dome growth have resumed. ","sentUtc":"2011-09-07","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2011-09-07T00:08:56-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2011-09-07T00:08:56-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2011-09-07T00:08:56-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20110830\/2102Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2011\/A4\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESatellite data obtained over the past two weeks indicates that growth of the lava dome at Cleveland volcano has paused or stopped. The recent period of eruption appears to have been predominantly effusive in character and confined to the summit crater. No significant ash emissions have been detected during the period of dome growth. For these reasons AVO is lowering the aviation color code\/alert level from Orange\/Watch to Yellow\/Advisory. The lava dome could resume growth at any time, and explosive activity and ash emissions remain a possibility. \u003Cbr \/\u003E\r\n   \u003Cbr \/\u003E\r\nWithout a real-time seismic network on the volcano, AVO is unable to track local earthquake activity related to volcanic unrest, provide forecasts of eruptive activity, or confirmation of explosive, ash-producing events. AVO will continue to monitor the volcano using satellite data as it becomes available.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western half of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. It is located about 75 km (45 mi.) west of the community of Nikolski, and 1500 km (940 mi.) southwest of Anchorage. The volcano's most recent significant eruption began in February, 2001 and it produced 3 explosive events that produced ash clouds as high as 12 km (39,000 ft) above sea level. The 2001 eruption also produced a rubbly lava flow and hot avalanche that reached the sea. The most recent minor ash emissions were observed in January and June 2009.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Mostly cloudy. No activity reported.","sentUtc":"2011-08-30","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2011-08-30T21:02:25-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2011-08-30T21:02:25-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2011-08-30T21:02:25-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20110802\/2343Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2011\/A3\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EObservations of Cleveland Volcano from Friday July 29, 2011 show a small lava dome about 40 meters (131 feet) in diameter in the summit crater. In response, AVO is raising the Aviation Color Code to Orange and the Alert Level to Watch. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe lava dome was extruded sometime after July 7 when the last clear view of the summit area was acquired.  The formation of a lava dome is consistent with observed thermal anomalies seen since July 19, 2011 suggesting that the dome extruded since that time. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nA weak thermal anomaly persists at the summit and may indicate that the lava dome continues to slowly grow or that dome growth has ceased and the dome is slowly cooling.  If dome growth continues, lava flows onto the flanks of the volcano may develop but would not be hazardous to aviation.  The presence of the lava dome increases the possibility of an explosive eruption, but does not necessarily indicate that one will occur.  Short-lived explosions could produce an ash cloud that exceeds 20,000 ft above sea level.  These events can occur without warning and may go undetected in satellite imagery for hours.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWithout a real-time seismic network at Cleveland, AVO is unable to track local earthquake activity related to volcanic unrest, provide forecasts of potential eruptions, or confirmation of explosive activity. Low-level ash emissions and elevated surface temperatures such as those observed recently do not necessarily mean a larger eruption is imminent. AVO continues to monitor the volcano using satellite imagery.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"small lava dome has been observed in the summit crater. ","sentUtc":"2011-08-02","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2011-08-02T23:43:50-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2011-08-02T23:43:50-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2011-08-02T23:43:50-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20110720\/2248Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            UNASSIGNED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2011\/A2\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAVO is raising the volcano alert level\/aviation color code at Cleveland Volcano from unassigned to ADVISORY\/YELLOW based on the presence of persistent thermal anomalies seen in satellite data yesterday and today.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWithout a real-time seismic network at Cleveland, AVO is unable to track local earthquake activity related to volcanic unrest. Short-lived explosions with ash clouds that could exceed 20,000 ft above sea level can occur without warning and may go undetected on satellite imagery for hours. Low-level ash emissions at Cleveland occur frequently and do not necessarily mean a larger eruption is imminent. AVO continues to monitor the volcano using satellite imagery.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo cloud observed.  \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENil\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western half of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. It is located about 75 km (45 mi.) west of the community of Nikolski, and 1500 km (940 mi.) southwest of Anchorage. The volcano's most recent significant eruption began in February, 2001 and it produced 3 explosive events that produced ash clouds as high as 12 km (39,000 ft) above sea level. The 2001 eruption also produced a rubbly lava flow and hot avalanche that reached the sea. The most recent minor ash emission was in September 2010.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"AVO is raising the volcano alert level\/aviation color code to ADVISORY\/YELLOW based on the detection of Thermal anomalies in satellite data. ","sentUtc":"2011-07-20","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2011-07-20T22:48:16-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2011-07-20T22:48:16-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2011-07-20T22:48:16-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20110423\/0231Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPagan  (VNUM #284170)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            UNASSIGNED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tU.S. Geological Survey\n\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2011\/N2\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 18 deg 7 min E 145 deg 48 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tNorthern Mariana Islands\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E1870 ft (570 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA NOAA research vessel in the vicinity of Pagan Volcano has reported night time observations of incandescence at the summit of the volcano.  Eruptive activity is considered currently to be at a low level; however with the possibility that the activity may escalate the Aviation Color Code for Pagan has been raised to YELLOW and the Volcano Alert Level to ADVISORY.  Recent satellite images have been obscured by clouds.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPagan is not monitored with ground-based geophysical instrumentation and the only source of information is satellite observation and occasional reports from observers who pass by or visit the island. We will continue to evaluate satellite imagery and on-island reports when they become available, but because the volcano is not monitored with ground-based instruments, we cannot provide advanced warning of activity.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAccess to the island may be restricted by the CNMI government. Contact the EMO for the latest information. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUSGS Northern Marianas Duty Scientist (808) 967-8815\u003Cbr \/\u003E\r\nhttp:\/\/volcano.wr.usgs.gov\/cnmistatus.php\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCNMI Emergency Management Office (670) 322-8001\u003Cbr \/\u003E\r\nhttp:\/\/www.cnmiemo.gov.mp\/\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Color code has been raised to YELLOW\/ADVISORY ","sentUtc":"2011-04-23","obs":"nmi","vName":"Pagan","vnum":"284170","noticeId":"DOI-USGS-NMI-2011-04-23T02:31:47-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2011-04-23T02:31:47-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2011-04-23T02:31:47-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20110331\/2007Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2011\/A1\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EBased on a lack of confirmed eruptive activity over the past several months, AVO is downgrading the alert level and aviation color code to UNASSIGNED. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nRecent clear satellite views of the Cleveland summit show no significant thermal anomalies or evidence of recent explosive events such as ash deposits on snow.  The last ash-producing event at Cleveland was in September 2010, when a small, very short-lived ash plume reached 25,000 feet above sea level.  Since then, occasional periods in which thermal anomalies have been observed in satellite imagery suggest that low-level unrest has continued without any eruption of ash.  The last weak thermal anomaly at Cleveland was detected early this morning. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDaily reports on the volcano will cease.  We wish to emphasize, however, that Cleveland Volcano experiences frequent episodes of low-level unrest; the summit crater at Cleveland often emits visible plumes of water vapor and possibly small quantities of volcanic gas.  Heat associated with this process can produce occasional weak thermal anomalies detected by satellite; however, these do not always indicate eruptive activity has occurred or is imminent.  \u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\nAVO is unable to designate NORMAL\/GREEN at Cleveland due to the lack of a seismic network to determine background levels of seismicity.  Sudden, short-lived explosive events could occur without warning and send ash above 20,000 ft above sea level.  These explosions could go undetected on satellite imagery for hours. AVO relies upon twice-daily satellite analysis of Cleveland, as well as pilot and mariner reports, to look for evidence of increasing activity or ash clouds.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENo cloud observed.  \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENil\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cbr \/\u003E\r\nCleveland volcano forms the western half of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. It is located about 75 km (45 mi.) west of the community of Nikolski, and 1500 km (940 mi.) southwest of Anchorage. The volcano's most recent significant eruption began in February, 2001 and it produced 3 explosive events that produced ash clouds as high as 12 km (39,000 ft) above sea level. The 2001 eruption also produced a rubbly lava flow and hot avalanche that reached the sea. The most recent minor ash emission was in September 2010.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Based on a lack of confirmed eruptive activity over the past several months, AVO is downgrading the alert level and aviation color code to UNASSIGNED. ","sentUtc":"2011-03-31","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2011-03-31T20:07:09-00:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2011-03-31T20:07:09-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2011-03-31T20:07:09-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20110222\/2317Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPagan  (VNUM #284170)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tU.S. Geological Survey\n\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2011\/N1\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 18 deg 7 min E 145 deg 48 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tNorthern Mariana Islands\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E1870 ft (570 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EWith the exception of a faint steam and gas plume observed on 24 January 2011, satellite data have detected no unusual activity at Pagan volcano in the past six weeks. The most recent known ash emission, which rose to 1.5 km above sea level and produced minor local ash fall, occurred on 11 August 2010. Based on these observations, we are lowering the color code at Pagan to unassigned.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPagan is not monitored with ground-based geophysical instrumentation and the only source of information is satellite observation and occasional reports from observers who visit the island. We will continue to evaluate satellite imagery and on-island reports when they become available, but because the volcano is not monitored with ground-based instruments, we cannot provide advanced warning of activity.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAccess to the island may be restricted by the CNMI government. Contact the EMO for the latest information. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPagan Island consists of two volcanoes: Mount Pagan on the north and South Pagan Volcano on the south. Mount Pagan is a stratovolcano that is growing within a 6-km-diameter caldera formed less than 9,400 years ago. South Pagan volcano is a large young stratovolcano with a summit caldera 2.8 km across. There are no known historical eruptions of South Pagan volcano. Mount Pagan is one of the most historically active volcanoes in the Northern Marianas. Its most recent large (VEI 4) eruption was in 1981. The volcano was intermittently active through 1996, producing mainly light ashfall from a column that would occasionally reach 10,000 feet above sea level. Following the 1981 eruption, destructive rain-triggered (secondary) debris flows buried large tracts of land, including the site of a village that contained a school, dispensary, church, power generating buildings, cisterns and associated infrastructure. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nMount Pagan is possibly the most dangerous volcano in the Northern Marianas. It is frequently active, and a full spectrum of acutely hazardous phenomena such as pyroclastic flows and surges, directed blasts, and secondary lahars (volcanic debris flows) have affected the relatively flat land close to the volcano; areas that are attractive for settlement. All known historical eruptions have originated at the central stratovolcano, but eruptions from flank or satellitic vents are possible. For instance, a large maar, with extensive surge deposits, formed on the west flank of Mount Pagan about 200 years ago. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUSGS Northern Marianas Duty Scientist (808) 967-8815\u003Cbr \/\u003E\r\nhttp:\/\/volcano.wr.usgs.gov\/cnmistatus.php\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCNMI Emergency Management Office (670) 322-8001\u003Cbr \/\u003E\r\nhttp:\/\/www.cnmiemo.gov.mp\/\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Color code lowered to unassigned.","sentUtc":"2011-02-22","obs":"nmi","vName":"Pagan","vnum":"284170","noticeId":"DOI-USGS-NMI-2011-02-22T23:17:59-00:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2011-02-22T23:17:59-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2011-02-22T23:17:59-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20100912\/1926Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            UNASSIGNED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2010\/A8\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAVO is raising the volcano alert level\/aviation color code at Cleveland Volcano from unassigned to ADVISORY\/YELLOW based on the presence of thermal anomalies in satellite data yesterday and a possible ash plume this morning. Satellite images of Cleveland Volcano this morning have detected a possible ash plume drifting east from the volcano. Estimated plume height is about 25,000 ft above sea level. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWithout a real-time seismic network at Cleveland, AVO is unable to track local earthquake activity related to volcanic unrest.  Short-lived explosions with ash clouds that could exceed 20,000 ft above sea level can occur without warning and may go undetected on satellite imagery for hours. Low-level ash emissions at Cleveland occur frequently and do not necessarily mean a larger eruption is imminent. AVO continues to monitor the volcano using satellite imagery.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nchris@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 978-5458\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Minor ash emission detected in satellite imagery.   ","sentUtc":"2010-09-12","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2010-09-12T19:26:42-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2010-09-12T19:26:42-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2010-09-12T19:26:42-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20100910\/1842Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2010\/A7\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeveral clear-weather satellite views of Cleveland from September 7 and 8 reveal no thermal anomaly nor recent deposits. The last observed thermal anomaly was on September 1. AVO is therefore moving the volcano alert level\/aviation color code from Advisory\/Yellow to UNASSIGNED.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWithout a real-time seismic network at Cleveland, AVO is unable to track local earthquake activity related to volcanic unrest.  Short-lived explosions with ash clouds that could exceed 20,000 ft above sea level can occur without warning and may go undetected on satellite imagery for hours. Low-level ash emissions at Cleveland occur frequently and do not necessarily mean a larger eruption is imminent. AVO continues to monitor the volcano using satellite imagery.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nchris@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 978-5458\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No reports of activity.   ","sentUtc":"2010-09-10","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2010-09-10T18:42:13-00:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2010-09-10T18:42:13-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2010-09-10T18:42:13-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20100910\/0047Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPagan  (VNUM #284170)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tU.S. Geological Survey\n\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2010\/N3\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 18 deg 7 min E 145 deg 48 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tNorthern Mariana Islands\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E1870 ft (570 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EVolcanic unrest continues at Pagan Volcano.  A very weak steam and gas plume was observed during clear periods in satellite imagery this week.   \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPagan is not monitored with ground-based geophysical instrumentation and the only source of information is satellite observation and occasional reports from observers who visit the island. We will continue to evaluate satellite imagery and on-island reports when they become available, but because the volcano is not monitored with ground-based instruments, we cannot provide advanced warning of activity.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAccess to the island may be restricted by the CNMI government. Contact the EMO for the latest information. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUSGS Northern Marianas Duty Scientist (808) 967-8815\u003Cbr \/\u003E\r\nhttp:\/\/volcano.wr.usgs.gov\/cnmistatus.php\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCNMI Emergency Management Office (670) 322-8001\u003Cbr \/\u003E\r\nhttp:\/\/www.cnmiemo.gov.mp\/\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Steam and gas emissions continue. Yellow\/Advisory  ","sentUtc":"2010-09-10","obs":"nmi","vName":"Pagan","vnum":"284170","noticeId":"DOI-USGS-NMI-2010-09-10T00:47:43-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2010-09-10T00:47:43-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2010-09-10T00:47:43-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20100826\/2352Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            UNASSIGNED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2010\/A6\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ERecent clear-weather satellite views of Cleveland volcano detect a persistent thermal anomaly at the summit of Cleveland.  The presence such an anomaly increases the probability of an ash emission from Cleveland.  AVO is therefore moving the volcano alert level\/aviation color code from UNASSIGNED to Advisory\/Yellow.  AVO continues to monitor the volcano using satellite imagery.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWithout a real-time seismic network at Cleveland, AVO is unable to track local earthquake activity related to volcanic unrest. Low-level ash emissions at Cleveland occur frequently and do not necessarily mean a larger eruption is imminent.  Short-lived explosions with ash clouds or plumes that could exceed 20,000 ft above sea level can occur without warning and may go undetected on satellite imagery.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western half of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. It is located about 75 km (45 mi.) west of the community of Nikolski, and 1500 km (940 mi.) southwest of Anchorage. The volcano's most recent significant eruption began in February, 2001 and it produced 3 explosive events that produced ash clouds as high as 12 km (39,000 ft) above sea level. The 2001 eruption also produced a rubbly lava flow and hot avalanche that reached the sea. The most recent minor ash emissions were observed in January and June 2009.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nchris@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Persistent thermal anomaly observed in satellite data. Moving to Yellow.","sentUtc":"2010-08-26","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2010-08-26T23:52:09-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2010-08-26T23:52:09-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2010-08-26T23:52:09-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20100611\/1928Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2010\/A5\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo signs of activity at Cleveland Volcano have been observed since a small low-level ash burst occurred on June 1. Recent clear-weather satellite views of the volcano show no thermal anomaly at the summit nor any evidence for new ash production or debris flows on the upper flanks. Thus we are moving the volcano alert level\/aviation color code from Advisory\/Yellow to UNASSIGNED. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nWithout a real-time seismic network at Cleveland, AVO is unable to track local earthquake activity related to volcanic unrest. Low-level ash emissions at Cleveland occur frequently and do not necessarily mean a larger eruption is imminent.  Short-lived explosions with ash clouds or plumes that could exceed 20,000 ft above sea level can occur without warning and may go undetected on satellite imagery.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western half of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. It is located about 75 km (45 mi.) west of the community of Nikolski, and 1500 km (940 mi.) southwest of Anchorage. The volcano's most recent significant eruption began in February, 2001 and it produced 3 explosive events that produced ash clouds as high as 12 km (39,000 ft) above sea level. The 2001 eruption also produced a rubbly lava flow and hot avalanche that reached the sea. The most recent minor ash emissions were observed in January and June 2009.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nchris@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No activity observed in satellite data. Moving to unassigned.","sentUtc":"2010-06-11","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2010-06-11T19:28:37-00:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2010-06-11T19:28:37-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2010-06-11T19:28:37-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20100609\/2126Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESarigan  (VNUM #284192)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tU.S. Geological Survey\n\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2010\/N2\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 16 deg 42 min E 145 deg 46 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tNorthern Mariana Islands\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E1765 ft (538 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EReport prepared by the U.S. Geological Survey.  All times UTC.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nNo further volcanic activity has been observed since the explosive eruption from a submarine vent south of Sarigan Island on May 29. Seismicity recorded on the nearest seismometer, located on Sarigan Island, has returned to background levels. Nothing unusual has been observed in satellite data. Therefore we are lowered the aviation color code\/volcano alert level from YELLOW\/WARNING to Unassigned.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nShould submarine volcanic activity in this area resume, it is possible that another eruption will occur and it likely will be similar to the previous event. Given the violent nature of the eruption last week, we would advise mariners to avoid the immediate area around the vent.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe USGS continues to monitor the activity with seismic data from stations located on Sarigan and Anatahan islands, as well as by analysis of satellite images. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAccess to the area may be restricted by the CNMI government. Contact the EMO for the latest information regarding access restrictions to Sarigan and Pagan Islands.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUSGS Northern Marianas Duty Scientist (808) 967-8815\u003Cbr \/\u003E\r\nhttp:\/\/volcano.wr.usgs.gov\/cnmistatus.php\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCNMI Emergency Management Office (670) 322-8001\u003Cbr \/\u003E\r\nhttp:\/\/www.cnmiemo.gov.mp\/\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No further eruptive activity, minor seismicity. Unassigned aviation code\/alert level.   ","sentUtc":"2010-06-09","obs":"nmi","vName":"Sarigan","vnum":"284192","noticeId":"DOI-USGS-NMI-2010-06-09T21:26:29-00:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2010-06-09T21:26:29-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2010-06-09T21:26:29-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20100601\/0246Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESarigan  (VNUM #284192)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tU.S. Geological Survey\n\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2010\/N3\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 16 deg 42 min E 145 deg 46 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tNorthern Mariana Islands\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E1765 ft (538 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismicity and subaqueous eruptive activity have declined at Sarigan Volcano prompting reduction of the Aviation Color Code to YELLOW and the Volcanic Activity Level to ADVISORY.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSeismicity at a single nearby station on Sarigan Island declined soon after the eruption of a large steam and ash cloud from a submarine vent 11 km (7 miles) south of Sarigan Volcano early yesterday. Satellite images show no sign of ongoing activity.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAn EMO observer aboard an overflight yesterday reported a large area of debris floating in the sea south of the island, and a stationary area of discoloration in the water, presumably above the vent.  The crew on Sarigan reported passage of a small wave (less than 0.5 m) following onset of the eruption yesterday.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe USGS continues to monitor the activity with seismic data from stations located on Sarigan and Anatahan, as well as by analysis of satellite images.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAccess to the area may be restricted by the CNMI government.  Contact the EMO for the latest information, and on status of evacuation of Sarigan and Pagan Islands. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cbr \/\u003E\r\nUSGS Northern Marianas Duty Scientist (808) 967-8815\u003Cbr \/\u003E\r\nhttp:\/\/volcano.wr.usgs.gov\/cnmistatus.php\u003Cbr \/\u003E\r\nCNMI Emergency Management Office (670) 322-8001\u003Cbr \/\u003E\r\nhttp:\/\/www.cnmiemo.gov.mp\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Seismicity and eruptive activity decline for submarine eruption near Sarigan Island.  Evacuation of field crews.  ","sentUtc":"2010-06-01","obs":"nmi","vName":"Sarigan","vnum":"284192","noticeId":"DOI-USGS-NMI-2010-06-01T02:46:49-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2010-06-01T02:46:49-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2010-06-01T02:46:49-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20100530\/1107Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ESarigan  (VNUM #284192)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tU.S. Geological Survey\n\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2010\/N2\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 16 deg 42 min E 145 deg 46 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tNorthern Mariana Islands\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E1765 ft (538 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EWashington VAAC reports an eruption cloud to 40,000 feet appeared in satellite images at 1230 UTC. Although the cloud appeared to be over or near Anatahan volcano in the satellite image, current evidence points to the source being an approximately 300-m-deep submarine seamount south of the island of Sarigan.  According to the seismic record from an Anatahan station, the event began about 1147 UTC with the strongest phase ending at approximately 1200 UTC . The cloud may contain ash but could be largely water vapor and appears to be shrinking as northerly winds to 25 kts carry it towards CNMI and Guam. No additional volcanic clouds have been detected and it is unknown if submarine activity is continuing. Observers on Sarigan reported hearing a loud explosion from the south, and shortly thereafter receiving ash fall. They also reported the sound of a wave passing by.  A SIGMET and Ash Advisory have been issued. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUSGS Northern Marianas Duty Scientist (808) 967-8815\u003Cbr \/\u003E\r\nhttp:\/\/volcano.wr.usgs.gov\/cnmistatus.phpCNMI Emergency Management Office (670) 322-8001\u003Cbr \/\u003E\r\nhttp:\/\/www.cnmiemo.gov.mp\/\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Submarine eruption near Sarigan Island.  Cloud to 40K'moving south.","sentUtc":"2010-05-30","obs":"nmi","vName":"Sarigan","vnum":"284192","noticeId":"DOI-USGS-NMI-2010-05-30T11:07:27-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2010-05-30T11:07:27-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2010-05-30T11:07:27-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20100526\/0117Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            UNASSIGNED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2010\/A4\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThermal anomalies observed in satellite data over the past few days suggest that Cleveland Volcano has entered another period of volcanic unrest.  In the past, the presence of thermal anomalies at the summit has been followed by moderate ash bursts, sometimes to aircraft flight levels.   Therefore, AVO is raising the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe lack of a real-time seismic network at Cleveland means that AVO is unable to track local earthquake activity related to volcanic unrest. Unrest at Cleveland is frequent, and short-lived explosions with ash clouds or plumes that could exceed 20,000 ft above sea level can occur without warning and may go undetected on satellite imagery.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western half of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. It is located about 75 km (45 mi.) west of the community of Nikolski, and 1500 km (940 mi.) southwest of Anchorage. The volcano's most recent significant eruption began in February, 2001 and it produced 3 explosive events that produced ash clouds as high as 12 km (39,000 ft) above sea level. The 2001 eruption also produced a rubbly lava flow and hot avalanche that reached the sea. The most recent minor ash emissions were observed in January, June, and October 2009.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nchris@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Persistent thermal anomalies observed over the last few days.  Aviation Color Code\/Volcano Alert Level raised to Yellow\/advisory  ","sentUtc":"2010-05-26","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2010-05-26T01:17:50-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2010-05-26T01:17:50-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2010-05-26T01:17:50-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20100505\/1724Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPagan  (VNUM #284170)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            UNASSIGNED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tU.S. Geological Survey\n\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2010\/N1\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 18 deg 7 min E 145 deg 48 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tNorthern Mariana Islands\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E1870 ft (570 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EReport prepared by the U.S. Geological Survey.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nA minor ash emission event was reported from Pagan Volcano at approximately 9 a.m. ChST on the morning of May 3 (May 2, 11 UTC) by a local visitor to the island.  Recent observations of steam and gas plumes from Pagan Volcano in MODIS satellite imagery occurred on April 28 (UTC) and in ASTER satellite imagery on May 3.  The ASTER image shows no evidence of unusual thermal activity in the summit crater.  Based on these reports, we are raising the Aviation Color Code to Yellow and the Volcano Alert Level to Advisory.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPagan is not monitored with ground-based geophysical instrumentation and the only source of information is satellite observation and occasional reports from observers who visit the island.  We will continue to evaluate satellite imagery and on-island reports when they become available, but because the volcano is not monitored with ground-based instruments, we cannot provide advanced warning of activity.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAccess to the island may be restricted by the CNMI government. Contact the Emergency Management Office to get the latest information.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUnknown\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPagan is the largest of the Northern Islands.  Pagan Island consists of two volcanoes: Mount Pagan on the north and South Pagan Volcano on the south. Mount Pagan is a stratovolcano that is growing within a 6-km-diameter caldera formed less than 9,400 years ago.  South Pagan volcano is a large young stratovolcano with a summit caldera 2.8 km across.  There are no known historical eruptions of South Pagan volcano. Mount Pagan is one of the most historically active volcanoes in the Northern Marianas. Its most recent large (VEI 4) eruption was in 1981. The volcano was intermittently active through 1996, producing mainly light ashfall from a column that would occasionally reach 10,000 feet above sea level.  Following the 1981 eruption, destructive rain-triggered (secondary) debris flows buried large tracts of land, including the site of a village that contained a school, dispensary, church, power generating buildings, cisterns and associated infrastructure.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nMount Pagan is possibly the most dangerous volcano in the Northern Marianas. It is frequently active, and a full spectrum of acutely hazardous phenomena such as pyroclastic flows and surges, directed blasts, and secondary lahars (volcanic debris flows) have affected the relatively flat land close to the volcano; areas that are attractive for settlement. All known historical eruptions have originated at the central stratovolcano, but eruptions from flank or satellitic vents are possible.  For instance, a large maar, with extensive surge deposits, formed on the west flank of Mount Pagan about 200 years ago. \u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUSGS Northern Marianas Duty Scientist (808) 967-8815\u003Cbr \/\u003E\r\nhttp:\/\/volcano.wr.usgs.gov\/cnmistatus.php\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCNMI Emergency Management Office (670) 322-8001\u003Cbr \/\u003E\r\nhttp:\/\/www.cnmiemo.gov.mp\/\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"report of steam\/gas emissions and ash fall on the island.  ","sentUtc":"2010-05-05","obs":"nmi","vName":"Pagan","vnum":"284170","noticeId":"DOI-USGS-NMI-2010-05-05T17:24:41-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2010-05-05T17:24:41-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2010-05-05T17:24:41-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20100412\/2110Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2010\/A3\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismic activity at Redoubt has diminished significantly from early last week.  Based on this decline and the lack of continuing signs of unrest, AVO is lowering the Aviation Color Code and Volcano Alert Level at Redoubt Volcano to GREEN\/NORMAL.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe swarm of small, shallow earthquakes that began Monday April 5 has ceased and seismic activity beneath the volcano has returned to background levels. Aerial observations of the new lava dome on April 8 and 9 indicated no significant changes at the surface and no sign of instability. Scattered patches of discolored snow and ice on the south side of the mountain may represent wind-remobilized rockfall debris or ash from the 2009 eruption. Alternatively, periods of more vigorous gas emission may entrain small amounts of tiny dome rock fragments that are carried over the crater rim.  Most of the dome surface is snow covered although there are areas of continued high-temperature gas emission. Measured levels of magmatic gas emission on April 8 and 9 are below those measured in December 2009, a trend expected for a slowly cooling and degassing lava dome.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAVO will continue to monitor conditions at Redoubt, but while we have no volcanoes at elevated color codes or alert levels, we will cease our usual daily reporting of activity and instead transmit a weekly summary only.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHeavily ice-mantled Redoubt volcano is located on the western side of Cook Inlet, 170 km (106 mi) southwest of Anchorage and 82 km (51 mi) west of Kenai, within Lake Clark National Park. Redoubt is a stratovolcano which rises to 10,197 feet above sea level. Recent eruptions occurred in 1902, 1966-68, 1989-90, and 2009. The 1989-90 and 2009 eruptions produced mudflows, or lahars, that traveled down the Drift River and partially flooded the Drift River Oil Terminal facility. The ash plumes produced by the 1989-90 and 2009 eruptions significantly disrupted air traffic and resulted in minor or trace amounts of ash in the city of Anchorage and other communities in south-central and interior Alaska.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ncwaythomas@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nfaust@gi.alaska.edu (907)322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Earthquake activity at Redoubt Volcano near background. Threat of renewed activity diminished.  ","sentUtc":"2010-04-12","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2010-04-12T21:10:51-00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2010-04-12T21:10:51-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2010-04-12T21:10:51-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20100405\/1959Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2010\/A2\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAVO is raising the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY at Redoubt volcano. This morning, at roughly 01:44 AKDT (0944 UTC) a series of small repetitive earthquakes began occurring in the vicinity of the volcano's summit. Activity is continuing this morning. See http:\/\/www.avo.alaska.edu\/webicorders\/Redoubt\/RSO_EHZ_AV.php\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThese earthquakes may be precursory to renewed eruptive activity at the volcano and increased instability of the lava dome. Whether this will result in explosive activity or failure of the lava dome is unknown at this time. However, there is a heightened possibility of volcanic activity that would produce a volcanic ash cloud, pyroclastic avalanches, and lahars and flooding down the Drift River.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EHeavily ice-mantled Redoubt volcano is located on the western side of Cook Inlet, 170 km (106 mi) southwest of Anchorage and 82 km (51 mi) west of Kenai, within Lake Clark National Park. Redoubt is a stratovolcano which rises to 10,197 feet above sea level. Recent eruptions occurred in 1902, 1966-68, 1989-90, and 2009. The 1989-90 and 2009 eruptions produced mudflows, or lahars, that traveled down the Drift River and partially flooded the Drift River Oil Terminal facility. The ash plumes produced by the 1989-90 and 2009 eruptions significantly disrupted air traffic and resulted in minor or trace amounts of ash in the city of Anchorage and other communities in south-central and interior Alaska.\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ncwaythomas@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Earthquake activity at Redoubt Volcano has increased. The Aviation Color Code is raised to Yellow and the Alert Level to Advisory.","sentUtc":"2010-04-05","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2010-04-05T19:59:33-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2010-04-05T19:59:33-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2010-04-05T19:59:33-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20100106\/0032Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2010\/A1\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EBased on the low level of seismic activity and lack of any obvious outward signs of progressing unrest, AVO is lowering the Aviation Color Code and Volcano Alert Level at Redoubt Volcano to GREEN\/NORMAL.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe swarm of small, shallow earthquakes that began Sunday, December 27 has ceased and the degree of seismic activity beneath the volcano has returned to background levels. Aerial observations of the new lava dome on December 31 indicated no obvious changes at the surface and no sign of instability. Thermal images also obtained on December 31 indicate that parts of the dome are still hot, although most of the dome surface remains cold and snow covered. Magmatic gas emission from the dome area on December 31 was slightly elevated compared to the last measurement in early November, but not enough to warrant great concern.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nIt is likely that existing magma within the volcano's shallow plumbing system was temporarily remobilized, causing the increase in seismicity, but this process appears to have ended. It is possible for activity to resume at any time and if it does, we expect to observe a distinct increase in seismicity as well as other outward signs of unrest such as increased melting and steaming in the vicinity of the lava dome or rock fall activity on the slopes of the dome.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAVO will continue to monitor conditions at Redoubt, but while we have no volcanoes at elevated color codes or alert levels, we will cease our usual daily reporting of activity and instead transmit a weekly summary only.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHeavily ice-mantled Redoubt volcano is located on the western side of Cook Inlet, 170 km (106 mi) southwest of Anchorage and 82 km (51 mi) west of Kenai, within Lake Clark National Park. Redoubt is a stratovolcano which rises to 10,197 feet above sea level. Recent eruptions occurred in 1902, 1966-68, 1989-90, and 2009. The 1989-90 and 2009 eruptions produced mudflows, or lahars, that traveled down the Drift River and partially flooded the Drift River Oil Terminal facility. The ash plumes produced by the 1989-90 and 2009 eruptions significantly disrupted air traffic and resulted in minor or trace amounts of ash in the city of Anchorage and other communities in south-central and interior Alaska.\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Earthquake activity at Redoubt Volcano remains low. The Aviation Color Code is lowered to Green and the Alert Level to Normal.","sentUtc":"2010-01-06","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2010-01-06T00:32:11-00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2010-01-06T00:32:11-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2010-01-06T00:32:11-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20091228\/1853Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A53\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAVO is raising the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY at Redoubt volcano. At roughly 16:00 AKDT yesterday Dec. 27 (0100 Dec. 28 UTC) a series of small repetitive earthquakes began occurring in the vicinity of the volcano's summit. Activity is continuing this morning.  See http:\/\/www.avo.alaska.edu\/webicorders\/Redoubt\/RSO_EHZ_AV.php \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThese earthquakes may be precursory to renewed eruptive activity at the volcano and increased instability of the lava dome. Whether this will result in explosive activity or failure of the lava dome is unknown at this time. However, there is a heightened possibility of volcanic activity that would produce a volcanic ash cloud, pyroclastic avalanches, and lahars and flooding down the Drift River.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EHeavily ice-mantled Redoubt volcano is located on the western side of Cook Inlet, 170 km (106 mi) southwest of Anchorage and 82 km (51 mi) west of Kenai, within Lake Clark National Park. Redoubt is a stratovolcano which rises to 10,197 feet above sea level. Recent eruptions occurred in 1902, 1966-68, 1989-90, and 2009. The 1989-90 and 2009 eruptions produced mudflows, or lahars, that traveled down the Drift River and partially flooded the Drift River Oil Terminal facility. The ash plumes produced by the 1989-90 and 2009 eruptions significantly disrupted air traffic and resulted in minor or trace amounts of ash in the city of Anchorage and other communities in south-central and interior Alaska.\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"A series of small repetitive earthquakes under Redoubt volcano that began Dec. 27 persists.  The Aviation color code raised to Yellow and alert level to Advisory.","sentUtc":"2009-12-28","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-12-28T18:53:11-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-12-28T18:53:11-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-12-28T18:53:11-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20091019\/2047Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A48\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo eruptive activity has been observed at Cleveland since the brief eruption at approximately 2330 AKDT October 2 (0730 UTC October 3), and recent clear nighttime satellite views showed no signs of activity.  Therefore, AVO is reducing the Aviation Color Code to UNASSIGNED and the Volcano Alert Level to UNASSIGNED.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe lack of a real-time seismic network at Cleveland means that AVO is unable to track local earthquake activity related to volcanic unrest. Unrest at Cleveland is frequent, and short-lived explosions with ash plumes that could exceed 20,000 ft above sea level can occur without warning and may go undetected on satellite imagery.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western half of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. It is located about 75 km (45 mi.) west of the community of Nikolski, and 1500 km (940 mi.) southwest of Anchorage. The volcano's most recent significant eruption began in February, 2001 and it produced 3 explosive events that produced ash clouds as high as 12 km (39,000 ft) above sea level. The 2001 eruption also produced a rubbly lava flow and hot avalanche that reached the sea. The most recent minor ash emissions were observed in January and June 2009.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7403\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No signs of activity since the brief eruption on October 2, 2009. Aviation Color Code\/Volcano Alert Level reduced to Green\/Normal  ","sentUtc":"2009-10-19","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2009-10-19T20:47:35-00:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-10-19T20:47:35-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-10-19T20:47:35-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20091019\/2045Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin  (VNUM #311360)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A47\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E9373 ft (2857 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ERecent clear satellite views of Shishaldin show no activity at the volcano, with the last thermal anomaly observed on August 16. While seismicity remains variable, it is still within background levels for this volcano. Shishaldin has had intermittent periods of unrest since January 2009, typically accompanied by thermal anomalies and increased steam emissions. The apparent waning of this activity over the past two months prompts AVO to reduce the Aviation Color Code to GREEN and the Volcano Alert Level to NORMAL.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A small summit crater typically emits a noticeable steam plume with occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, erupting atleast 28 times since 1775.  Most of Shishaldin's eruptions have consisted of small ash and steam plumes, although the most recent eruption in April-May 1999 produced an ash column that reached a height of 45,000 ft above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMichelle Coombs, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nmcoombs@usgs.gov (907) 786-7403\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Last thermal anomaly seen in satellite images in mid August.  Seismicity remains low.  Aviation Color Code reduced to GREEN and Volcano Alert Level reduced to NORMAL ","sentUtc":"2009-10-19","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2009-10-19T20:45:35-00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-10-19T20:45:35-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-10-19T20:45:35-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20091005\/2320Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A46\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ENo additional eruptive activity has been observed at Cleveland since the brief eruption at approximately 2330 AKDT October 2 (0730 UTC October 3). Clear satellite views from this morning show nothing unusual at the volcano. Thus we are lowering the aviation color code and volcano alert level to YELLOW\/ADVISORY.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe October 2 eruption produced a small, detached ash cloud at maximum altitudes of 15,000' to 20,000' (4.5 - 6.1 km). Such events are typical of Cleveland activity. While no more events have been detected, further eruptive activity is possible at any time.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe lack of a real-time seismic network at Cleveland means that AVO is unable to track local earthquake activity related to volcanic unrest. Short-lived explosions with ash plumes that could exceed 20,000 ft above sea level can occur without warning and may go undetected on satellite imagery.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nNote: In the initial notification of this event and two subsequent status reports, the event's date was incorrectly stated as \u00220730 UTC (2330 AKDT) 02 October 2009.\u0022 \u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western half of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. It is located about 75 km (45 mi.) west of the community of Nikolski, and 1500 km (940 mi.) southwest of Anchorage. The volcano's most recent significant eruption began in February, 2001 and it produced 3 explosive events that produced ash clouds as high as 12 km (39,000 ft) above sea level. The 2001 eruption also produced a rubbly lava flow and hot avalanche that reached the sea. The most recent minor ash emissions were observed in January and June 2009.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Aviation color code and volcano alert level lowered to yellow\/advisory at Cleveland Volcano. No more ash events observed.","sentUtc":"2009-10-05","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2009-10-05T23:20:45-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-10-05T23:20:45-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-10-05T23:20:45-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20091003\/1129Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            UNASSIGNED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A45\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESatellite data indicate that Cleveland volcano erupted briefly this morning at ~0730 UTC (2330 AKDT) 02 October 2009, producing an ash cloud to maximum altitudes of 15,000' to 20,000' (4.5 - 6.1 km). Thus, the aviation color code is being increased to Orange, and the volcano alert level is being increased to Watch. Further eruptive activity is possible.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe lack of a real-time seismic network at Cleveland means that AVO is unable to track local earthquake activity related to volcanic unrest. Short-lived explosions with ash plumes that could exceed 20,000 ft above sea level can occur without warning and may go undetected on satellite imagery.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western half of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. It is located about 75 km (45 mi.) west of the community of Nikolski, and 1500 km (940 mi.) southwest of Anchorage. The volcano's most recent significant eruption began in February, 2001 and it produced 3 explosive events that produced ash clouds as high as 12 km (39,000 ft) above sea level. The 2001 eruption also produced a rubbly lava flow and hot avalanche that reached the sea. The most recent minor ash emissions were observed in January and June 2009.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EStephanie Prejean, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nsprejean@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"AVO raising aviation color code and volcano alert level to orange\/watch at Cleveland Volcano.","sentUtc":"2009-10-03","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2009-10-03T11:29:59-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-10-03T11:29:59-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-10-03T11:29:59-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090929\/1944Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A44\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EOver the past several months, seismic activity, volcanic gas output, ground deformation, lava dome temperatures, and outward signs of lava dome instability at Redoubt Volcano have been declining.   The volcano appears to have returned to its normal background condition and for now poses no immediate threat of eruptive activity.  Accordingly, AVO is lowering the Aviation Color Code to GREEN and the Volcano Alert Code to NORMAL.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSince it began growing in early April 2009, the lava dome in the summit crater at the top of the Drift glacier canyon has reached a volume of approximately 70 million cubic meters (91 million cubic yards). Lava domes, particularly those built on steep slopes, are typically unstable and subject to sudden collapse. A dome collapse at Redoubt would likely produce ash clouds and falls, hot block-and-ash flows, and downstream flooding and lahars. However, based on the length of time since the cessation of dome growth (more than 60 days), AVO believes the possibility for dome collapse is small and declining toward a background level of danger typical of many active stratovolcanoes with steep unstable rock slopes.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nRedoubt's new lava dome remains hot and gas-rich and will continue to pose local hazards for some time. High levels of sulfur dioxide, carbon dioxide, and hydrogen sulfide may occur near the dome, as will rock falls and abundant steaming. Depending on wind and cloud conditions, sulfur smells could reach populated areas and steam plumes will be visible on occasion. Small outbursts of impounded water, not associated with a dome collapse, are possible, but these are unlikely to pose a threat much beyond the upper Drift River. As temperatures in the area begin to decline and winter freeze up occurs, the likelihood of flooding of the valleys of the lower Drift River, Rust Slough, Cannery Creek, and Montana Bill Creek will also decline. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAt this time it is not known if the volcano is entering a prolonged period of quiet, as it did after the 1966-68 and 1989-90 eruptions when the volcano exhibited little to no unrest for periods of about 20 years.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nA resumption of eruptive activity at Redoubt in the near future is possible, but AVO considers this scenario unlikely. Hours to days of precursory seismicity would likely precede resumed activity, providing AVO ample time to issue prompt forecasts of possible volcanic hazard.  AVO continuously monitors Redoubt with an alarm system that alerts on-call staff of potential unrest.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Color code downgrade to GREEN at Redoubt as activity remains low.  Possibility of lava dome collapse continues to diminish.","sentUtc":"2009-09-29","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-09-29T19:44:52-00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-09-29T19:44:52-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-09-29T19:44:52-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090715\/2311Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A43\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAVO is lowering the aviation color code and volcano alert level to unassigned at Cleveland Volcano. AVO has observed no further activity at Cleveland since a small eruption occurred on June 25. The volcano has been mostly obscured by clouds since June 28, and there have been no reports of activity from nearby aircraft or boats in the region. It appears that the event on June 25 was brief and and no additional ash emissions have occurred since then. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland Volcano is not monitored with seismic instruments and activity is detected primarily with satellite data. Alert levels are assigned on the basis of review and interpretation of this data. Because Cleveland Volcano is not monitored with seismic instruments, it receives the designation \u0022unassigned\u0022 rather than \u0022Green\/Normal.\u0022  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCleveland Volcano forms the western half of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. It is located about 75 km (45 mi.) west of the community of Nikolski, and 1500 km (940 mi.) southwest of Anchorage. The volcano's most recent significant eruption began in February, 2001 and it produced 3 explosive events that produced ash clouds as high as 12 km (39,000 ft) above sea level. The 2001 eruption also produced a rubbly lava flow and hot avalanche that reached the sea. The most recent minor ash emissions were observed in January and June 2009.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nfaust@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"AVO is lowering the aviation color code and volcano alert level to unassigned at Cleveland Volcano.","sentUtc":"2009-07-15","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2009-07-15T23:11:36-00:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-07-15T23:11:36-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-07-15T23:11:36-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090710\/2314Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin  (VNUM #311360)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A42\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E9373 ft (2857 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe Alaska Volcano Observatory is rasing the Aviation Color Code to YELLOW and the Alert Level to ADVISORY at Shishaldin Volcano based on the presence of a persistent thermal anomaly in the summit crater.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nBeginning in January 2009, a distinct thermal feature in the summit crater has been observed intermittently in satellite imagery. Over the past month, the intensity of this thermal feature has increased. AVO has observed this thermal anomaly several times  over the past week while satellite viewing conditions were favorable. The increase in thermal emissions at Shishaldin mark a change from the normal background observed since the end of the previous eruption in 1999.  Seismicity at the volcano has not changed appreciably over the time interval during which the thermal anomaly has been observed. Tiltmeters operated by UNAVCO with the National Science Foundation's Earthscope Project on the north and west flanks of the volcano show no deformation of the volcano during this time period. Satellite observations show no significant sulfur dioxide gas emissions. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO has received a few reports of steaming from the summit crater, which has also been observed in satellite imagery. However, this is not necessarily anomalous activity for this volcano, and the unrest observed over the past several weeks does not indicate that an eruption is imminent. AVO will continue to watch Shishaldin carefully for additional signs of increased unrest.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A small summit crater typically emits a noticeable steam plume with occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, erupting atleast 28 times since 1775.  Most of Shishaldin's eruptions have consisted of small ash and steam plumes, although the most recent eruption in April-May 1999 produced an ash column that reached a height of 45,000 ft above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\nfaust@gi.alaska.edu (907) 474-7992\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Volcano has persistent thermal anomaly in summit crater - no indications that an eruption is imminenet","sentUtc":"2009-07-10","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2009-07-10T23:14:25-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-07-10T23:14:25-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-07-10T23:14:25-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090630\/1920Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A41\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAVO is lowering the Aviation Color Code to Yellow and the Alert Level to Advisory at Redoubt volcano. Seismic, satellite, gas, and deformation observations over the past few weeks indicate that growth of the lava dome at Redoubt has significantly slowed, if not stopped, and therefore it is possible that the current eruptive activity has ended. However, it is unknown if this represents the end of the 2009 eruption of Redoubt or if the activity has only paused temporarily and might resume in the next months. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe large lava dome located at the north side of the summit crater, and extending down the Drift Glacier Gorge, still presents a hazard. It is possible that this large mass of fresh lava is unstable and could fail with little or no warning, leading to significant ash production and possible lahars in the Drift River valley.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO will continue to monitor Redoubt's activity closely, but begin to transition off 24\/7 staffing. Later updates will describe operational changes as they occur.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe 2009 eruption of Redoubt volcano began March 15th, 2009 with a steam explosion. Between March 22nd and April 4th, Redoubt produced multiple significant explosions that sent ash and gas clouds to as high as 65,000 feet (19.8 km) above sea level that significantly disrupted air traffic and resulted in minor or trace amounts of ash in the city of Anchorage and other nearby communities.  Voluminous mudflows inundated the Drift River Valley as far as Cook Inlet on March 23 and April 4.  After April 4th, the eruption continued with extrusion of a lava dome within the summit crater, eventually producing a blocky lava flow that currently extends ~0.6 miles (1 km) down the north flank of the volcano.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHeavily ice-mantled Redoubt volcano is located on the western side of Cook Inlet, 170 km (106 mi) southwest of Anchorage and 82 km (51 mi) west of Kenai, within Lake Clark National Park. Redoubt is a stratovolcano that rises to 10,197 feet above sea level. Recent eruptions occurred in 1902, 1966-68, 1989-90, and 2009. \u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJessica Larsen, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nfaust@gi.alaska.edu (907) 322-4085\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Lowering alert level to Yellow\/Advisory.  Growth of lava dome significantly slowed, if not stopped.","sentUtc":"2009-06-30","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-06-30T19:20:03-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-06-30T19:20:03-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-06-30T19:20:03-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090628\/0113Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A40\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAVO is downgrading the aviation color code at Cleveland volcano to Yellow, and the volcano alert level to Advisory.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nA small eruption at Cleveland volcano occurred Thursday, June 25, producing an ash plume that rose to less than 15,000 ft. above sea level.  The plume, observed in satellite images, quickly detached from the volcano and moved south.  There have been no further reports of activity.  Such small, short-lived events are typical of Cleveland volcano.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAVO monitors Cleveland Volcano with satellite imagery as weather allows. The lack of a real-time seismic network at Cleveland means that AVO is unable to track local earthquake activity related to volcanic unrest. Short-lived explosions of ash that could exceed 20,000 ft above sea level can occur without warning and may go undetected on satellite imagery.  Please see http:\/\/www.avo.alaska.edu\/activity\/Cleveland.php for more information.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCleveland volcano forms the western half of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. It is located about about 75 km (45 mi.) west of the community of Nikolski, and 1500 km (940 mi.) southwest of Anchorage. The volcano's most recent significant eruption began in February, 2001 and had 3 explosive events that produced ash clouds as high as 12 km (39,000 ft) above sea level. This eruption also produced a rubbly lava flow and hot avalanche that reached the sea. The most recent minor ash emissions were observed on June 25, 2009.\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Downgrading to Yellow\/Advisory.  Small eruption on June 25, no further activity reported.","sentUtc":"2009-06-28","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2009-06-28T01:13:23-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-06-28T01:13:23-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-06-28T01:13:23-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090625\/2300Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            UNASSIGNED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A39\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA small eruption at Cleveland volcano occurred today and AVO is raising the Aviation Color Code to Orange and the Alert Level to Watch.  An ash plume from the volcano was seen in satellite images from 1915 UTC (11:15 AKDT) today. The plume has detached from the volcano is moving south.  Estimated plume height is less than 15,000 ft. above sea level. \u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western half of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. It is located about about 75 km (45 mi.) west of the community of Nikolski, and 1500 km (940 mi.) southwest of Anchorage. The volcano's most recent significant eruption began in February, 2001 and had 3 explosive events that produced ash clouds as high as 12 km (39,000 ft) above sea level. This eruption also produced a rubbly lava flow and hot avalanche that reached the sea. The most recent minor ash emissions were observed in January 2009.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Small eruption, possible ash cloud <15,000 ft above sea level. ","sentUtc":"2009-06-25","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2009-06-25T23:00:30-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-06-25T23:00:30-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-06-25T23:00:30-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090526\/2042Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVeniaminof  (VNUM #312070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A38\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 56 deg 11 min W 159 deg 23 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8225 ft (2507 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismic activity at Veniaminof Volcano on the Alaska Peninsula has diminished over the past week.  The aviation color code and volcano alert level are returned to Green\/Normal.  AVO received no reports of unusual activity from pilots or observers in the area after going to Yellow\/Advisory on May 7.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Seismic activity returns to near background.  Aviation color code dropped to Green, Alert level to Normal.","sentUtc":"2009-05-26","obs":"avo","vName":"Veniaminof","vnum":"312070","noticeId":"DOI-USGS-AVO-2009-05-26T20:42:13-00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-05-26T20:42:13-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-05-26T20:42:13-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090508\/0206Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVeniaminof  (VNUM #312070)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A37\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 56 deg 11 min W 159 deg 23 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAlaska Peninsula\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E8225 ft (2507 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EOver the past day, earthquake activity has increased at Mount Veniaminof volcano. This increase is a significant change from normal background activity and AVO is increasing the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nVisual reports today from Perryville indicate typical steaming from the summit caldera cone that has been the site of activity over recent years. No ash has been observed or detected in satellite images, but low-level ash emissions could occur with very little additional warning.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCurrently the earthquakes are small in magnitude but are registering across the entire seismic network. Seismicity rates are high and have varied between 5-10 earthquakes per hour during quieter periods to 1-3 earthquakes per minute during more intense activity.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPlease note that the Veniaminof web camera is currently not operating. Plans have been made to fix this camera, but the time frame is uncertain.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EMount Veniaminof volcano is an andesitic stratovolcano with an ice-filled 10-km diameter summit caldera located on the Alaska Peninsula, 775 km (480 mi) southwest of Anchorage and 35 km (22 mi) north of Perryville. Veniaminof is one of the largest (~ 300 km3) and most active volcanic centers in the Aleutian Arc and has erupted at least 13 times in the past 200 years. Recent significant eruptions of the volcano occurred in 1993-95 and 2005. Both were moderate Strombolian eruptions producing  intermittent low-level jets of incandescent lava fragments, and low-level emissions of steam and ash from the main intracaldera cone.  During the 1993-95 activity, a small lava flow was extruded into the summit caldera ice field producing an ice pit. Minor ash-producing explosions occurred in 2002, 2004, early 2005, and early November 2006, and February to March 2008. Previous historical eruptions have produced ash plumes that reached 6,000 m (20,000 ft) above sea level and ash fallout that blanketed areas within about 40 km (25 mi) of the volcano.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO will continue to monitor activity at Mount Veniaminof using seismic data, satellite images, and observer reports. Please see http:\/\/www.avo.alaska.edu\/activity\/Veniaminof.php for more information.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nMike West, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\nwest@gi.alaska.edu (907) 474-6977\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Increased earthquake activity above background levels. Low altitude ash emission are possible but not certain.","sentUtc":"2009-05-08","obs":"avo","vName":"Veniaminof","vnum":"312070","noticeId":"DOI-USGS-AVO-2009-05-08T02:06:22-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-05-08T02:06:22-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-05-08T02:06:22-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090505\/1559Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A36\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ECurrent activity at Redoubt volcano suggests that a significant explosive event is likely, though not certain, in the coming days. This event could occur at any time with little or no warning. Since about May 2 shallow earthquake activity beneath the actively growing lava dome of Redoubt volcano has been slowly increasing.  The growing lava dome is becoming increasingly unstable.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nShould a significant explosion occur, the event will likely produce high altitude (>30,000 ft ASL) ash plumes, trace to minor ash fall in parts of south-central Alaska, lahars in the Drift River Valley, and pyroclastic flows in the immediate vicinity of the volcano.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO continues 24\/7 operations and is monitoring the situation closely.  AVO will provide frequent updates of the volcano's status and the earliest possible warning of significant explosive activity and other hazardous phenomena.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe seismic activity is primarily characterized by repetitive events occurring several times per minute as well as more continuous volcanic tremor.  Similar seismicity has been observed prior to several explosions earlier in the 2009 eruptive sequence and many of the explosive events during the 1989-90 eruption.  The lava dome that has grown in Redoubt's summit crater is now roughly equal in size to the largest dome that was emplaced during the 1989-90 eruption.  As the dome grows larger it is increasingly unstable with a growing likelihood of a complete or partial dome failure.  Recent observations indicate that small, ash-producing rockfalls from the dome's north side are becoming more frequent.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nMike West, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nwest@gi.alaska.edu (907) 474-6977\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Activity continues to increase.  An explosive event is likely, though not certain, in the coming days.","sentUtc":"2009-05-05","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-05-05T15:59:43-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-05-05T15:59:43-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-05-05T15:59:43-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090501\/1731Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A35\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAVO is lowering the Aviation Color Code and Alert Level at Cleveland volcano to UNASSIGNED.  No volcanic activity of significance has been detected at Cleveland since late January 2009. Satellite images have shown no evidence of ash emission or thermal anomalies in the summit area.  Because Cleveland is not monitored in real-time with a seismic network, we cannot confidently state that the volcano has returned completely to a background level of quiescence. Therefore, we use the term UNASSIGNED to characterize the state of the volcano and hazards.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCleveland volcano has been intermittently active for a number of years with pauses of months between minor ash explosions.  Additional ash events can occur without warning and, since the volcano is unmonitored in real-time, ash clouds can go undetected for several hours.  AVO uses satellite imagery to evaluate the state of activity at Cleveland.  Frequent periods of poor weather can prevent clear views of the volcano for weeks at a time.  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western half of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. It is located about about 75 km (45 mi.) west of the community of Nikolski, and 1500 km (940 mi.) southwest of Anchorage. The volcano's most recent significant eruption began in February, 2001 consisting of 3 explosive events that produced ash clouds as high as 12 km (39,000 ft) above sea level. This eruption also produced a rubbly lava flow and hot avalanche that reached the sea. The most recent minor ash emissions were observed in January 2009.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No activity reported since late January.","sentUtc":"2009-05-01","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2009-05-01T17:31:41-00:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-05-01T17:31:41-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-05-01T17:31:41-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090428\/0439Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPagan  (VNUM #284170)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tU.S. Geological Survey\n\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/N2\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 18 deg 7 min E 145 deg 48 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tNorthern Mariana Islands\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E1870 ft (570 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EReport prepared by the U.S. Geological Survey.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteaming at Pagan volcano has diminished and therefore the aviation color code and alert levels are being lowered to unassigned. There are no monitoring instruments installed on Pagan and thus we do not use the levels Green or Normal because we cannot say definitely that activity is at background.  Monitoring is by satellite and ground observers.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAccess to the island may be restricted by the CNMI government. Contact the Emergency Management Office to get the latest information.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENil\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ENil\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EUSGS Northern Marianas Duty Scientist (808) 967-8815\u003Cbr \/\u003E\r\nhttp:\/\/volcano.wr.usgs.gov\/cnmistatus.php\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCNMI Emergency Management Office (670) 322-8001\u003Cbr \/\u003E\r\nhttp:\/\/www.cnmiemo.gov.mp\/\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Steaming at Pagan volcano has diminished and therefore the aviation color code and alert level is being lowered to unassigned.","sentUtc":"2009-04-28","obs":"nmi","vName":"Pagan","vnum":"284170","noticeId":"DOI-USGS-NMI-2009-04-28T04:39:15-00:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2009-04-28T04:39:15-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2009-04-28T04:39:15-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090415\/1838Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPagan  (VNUM #284170)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tU.S. Geological Survey\n\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/N1\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 18 deg 7 min E 145 deg 48 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tNorthern Mariana Islands\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E1870 ft (570 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EBased on imagery at 0743Z and 1349Z, the Washington VAAC reported a plume emitted from Pagan Volcano consisting of intermittent puffs of steam was visible and extending about 20 nautical miles to the west of the summit at an altitude of 6,000 ft.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nYesterday, EMO officials on Saipan relayed a report from a nearby ship that a white and some black plume was being emitted from the volcano to an estimated altitude of 1.8 km (5,700 ft)\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe USGS does not currently have any permanent monitoring instruments installed on Pagan. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVolcanic plume reported to 6,000 ft alititude.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Econsists of gas, steam, and possibly ash, extending about 20 nautical miles to the west.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003Ehttp:\/\/volcano.wr.usgs.gov\/cnmistatus.php\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nUSGS Northern Marianas Duty Scientist (808) 967-8815\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"ALERT LEVEL CHANGE TO ADVISORY\/YELLOW. Intermittent puffs of steam and possibly ash reported moving west to west northwest.","sentUtc":"2009-04-15","obs":"nmi","vName":"Pagan","vnum":"284170","noticeId":"DOI-USGS-NMI-2009-04-15T18:38:26-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-NMI-2009-04-15T18:38:26-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-NMI-2009-04-15T18:38:26-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090406\/2355Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A34\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe eruption of Redoubt continues with varying intensity of ash and lava production from the summit crater.  Additional significant explosive events with accompanying ash clouds, ash fall, and mudflows are possible and can occur with little or no warning. Visual, satellite, and seismic observations indicate that a lava dome is again forming in the summit crater.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe character of current seismicity suggests that a sudden explosive eruption is not imminent. Present levels of activity are emitting only a very minor amount of ash that poses a hazard of limited aerial extent.  Consequently, AVO is lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH. AVO will maintain 24\/7 operations in order to quickly detect renewed significant explosive activity and other hazardous phenomena.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nIntermittent views by the AVO web camera earlier today show a continuous plume composed primarily of water vapor and gas rising above the summit to less than 15,000 feet and drifting northeast.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nPlease see the National Weather Service Redoubt coordination page http:\/\/pafc.arh.noaa.gov\/volcano.php for the latest ash fall information.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EHeavily ice-mantled Redoubt volcano is located on the western side of Cook Inlet, 170 km (106 mi) southwest of Anchorage and 82 km (51 mi) west of Kenai, within Lake Clark National Park. Redoubt is a stratovolcano which rises to 10,197 feet above sea level. Recent eruptions occurred in 1902, 1966-68, and 1989-90. The 1989-90 eruption produced mudflows, or lahars, that traveled down the Drift River and partially flooded the Drift River Oil Terminal facility. The ash plumes produced by the 1989-90 eruption affected international air traffic and resulted in minor or trace amounts of ash in the city of Anchorage and other nearby communities.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Eruption continues. Lava dome growing in summit crater. Steam plume probably to 15,000 feet. Possibility of sudden explosions, ash clouds, ash fall, and mudflows. ","sentUtc":"2009-04-06","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-04-06T23:55:36-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-04-06T23:55:36-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-04-06T23:55:36-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090404\/1551Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A33\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ECORRECTION OF ALERT LEVEL TO WARNING.  Another significant explosive event occurred at Redoubt Volcano at approximately 5:58 am AKDT (13:58 UTC). At this time, the cloud height is estimated to be 50,000 feet based on National Weather Service radar. The cloud is drifting to the southeast of the volcano.  AVO seismometers indicate a lahar has developed in the Drift River Valley. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Another explosive event underway.  Ash cloud to 50,000 feet and drifting southeast. Lahars in Drift River Valley. ","sentUtc":"2009-04-04","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-04-04T15:51:43-00:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-04-04T15:51:43-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-04-04T15:51:43-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090404\/1535Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A32\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAnother significant explosive event occurred at Redoubt Volcano at approximately 5:58 am AKDT (13:58 UTC). At this time, the cloud height is estimated to be 50,000 feet based on National Weather Service radar. The cloud is drifting to the southeast of the volcano.  AVO seismometers indicate a lahar has developed in the Drift River Valley.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":" ","sentUtc":"2009-04-04","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-04-04T15:35:41-00:00","colorCode":"RED","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-04-04T15:35:41-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-04-04T15:35:41-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090403\/2044Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A31\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe eruption of Redoubt Volcano continues. Over the past several days, the intensity of ash-production has decreased.  Current observations indicate a lava dome is growing in the summit crater.  Therefore, we are lowering the alert level and aviation color code.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe 2009 eruption is now characterized by continuous emission of steam, volcanic gas, and variable amounts of ash.  These processes are occurring as effusion of lava in the summit crater produces a lava dome.  While at this level of activity, trace amounts of ash and a perceptible volcanic haze layer may be intermittently present throughout south-central Alaska. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nA growing lava dome is inherently unstable; a sudden dome collapse or explosion can occur with no warning and produce a more voluminous ash cloud that rises to elevations above 25,000 feet. If such an event is detected, AVO would issue appropriate warnings.  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EHeavily ice-mantled Redoubt volcano is located on the western side of Cook Inlet, 170 km (106 mi) southwest of Anchorage and 82 km (51 mi) west of Kenai, within Lake Clark National Park. Redoubt is a stratovolcano which rises to 10,197 feet above sea level. Recent eruptions occurred in 1902, 1966-68, and 1989-90. The 1989-90 eruption produced mudflows, or lahars, that traveled down the Drift River and partially flooded the Drift River Oil Terminal facility. The ash plumes produced by the 1989-90 eruption affected air traffic and resulted in minor or trace amounts of ash in the city of Anchorage and other nearby communities.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Eruption continues. Steam, gas, and minor ash emission is continuous, typically below 15,000 ft but as high as 25,000 ft at times. Lava dome growth continues. ","sentUtc":"2009-04-03","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-04-03T20:44:52-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-04-03T20:44:52-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-04-03T20:44:52-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090330\/1912Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A30\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn ash emission event at Redoubt volcano occurred at 9:44 AKDT (17:44 UTC) this morning and produced an ash plume to about 27,000 feet above sea level. The event lasted for about 10 minutes and appears to have ended.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERadar showed a cloud top at 27,000 ft above sea level at the time of heightened tremor. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu  \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosive activity at Mt. Redoubt continues with eruption clouds occasionally extending above 20,000 ft. above sea level.","sentUtc":"2009-03-30","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-03-30T19:12:07-00:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-03-30T19:12:07-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-03-30T19:12:07-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090330\/1414Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A29\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAVO has re-analyzed the event reported as an explosive eruption at Redoubt volcano occurring at approximately 23:14 AKDT on March 29 (07:14 UTC March 30). At that time, there was heightened tremor, however, seismic and infrasound data do not show clear evidence that an explosion occurred and this will not be categorized as an explosive eruption.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERadar showed a cloud top above 20,000 ft above sea level at the time of heightened tremor. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu  \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosive activity at Mt. Redoubt continues with eruption clouds occasionally extending above 20,000 ft. above sea level.","sentUtc":"2009-03-30","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-03-30T14:14:47-00:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-03-30T14:14:47-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-03-30T14:14:47-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090330\/0835Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A28\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAnother explosive eruption of Redoubt volcano occurred at approximately 23:14 AKDT (7:14 UTC). NWS reports clouds with radar cloud tops above 20,000 ft above sea level.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFor ash fall advisories, refer to the National Weather Service Redoubt Coordination web page \u003Cbr \/\u003E\r\nhttp:\/\/pafc.arh.noaa.gov\/volcano.php  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu  \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosive activity at Mt. Redoubt continues with eruption clouds extending above 20,000 ft. above sea level.","sentUtc":"2009-03-30","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-03-30T08:35:01-00:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-03-30T08:35:01-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-03-30T08:35:01-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090329\/0436Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A27\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAnother explosive eruption of Redoubt volcano occurred at approximately 19:23 AKDT (03:23 UTC). NWS reports a radar cloud top above 45,000 ft above sea level.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFor ash fall advisories, refer to the National Weather Service Redoubt Coordination web page \u003Cbr \/\u003E\r\nhttp:\/\/pafc.arh.noaa.gov\/volcano.php  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu  \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosive activity at Mt. Redoubt continues with eruption clouds extending above 45,000 ft. above sea level.","sentUtc":"2009-03-29","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-03-29T04:36:47-00:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-03-29T04:36:47-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-03-29T04:36:47-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090329\/0043Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A26\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAnother explosive eruption of Redoubt volcano occurred at approximately 15:29 AKDT (23:29 UTC). NWS reports a radar cloud top above 35,000 ft above sea level.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFor ash fall advisories, refer to the National Weather Service Redoubt Coordination web page \u003Cbr \/\u003E\r\nhttp:\/\/pafc.arh.noaa.gov\/volcano.php  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu  \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosive activity at Mt. Redoubt continues with eruption clouds extending above 35,000 ft. above sea level.","sentUtc":"2009-03-29","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-03-29T00:43:32-00:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-03-29T00:43:32-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-03-29T00:43:32-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090328\/2258Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A25\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAnother explosive eruption of Redoubt volcano occurred at approximately 13:40 AKDT (21:20 UTC). NWS reports a cloud top of 25,000 ft above sea level.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFor ash fall advisories, refer to the National Weather Service Redoubt Coordination web page \u003Cbr \/\u003E\r\nhttp:\/\/pafc.arh.noaa.gov\/volcano.php  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu  \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosive activity at Mt. Redoubt continues with eruption clouds extending as high as 25,000 ft. above sea level.","sentUtc":"2009-03-28","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-03-28T22:58:10-00:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-03-28T22:58:10-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-03-28T22:58:10-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090328\/1029Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A24\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAnother explosive eruption of Redoubt volcano occurred at approximately 01:20 AKDT (0920 UTC). NWS reports a cloud top of 50,000 ft above sea level.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFor ash fall advisories, refer to the National Weather Service Redoubt Coordination web page \u003Cbr \/\u003E\r\nhttp:\/\/pafc.arh.noaa.gov\/volcano.php  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu  \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosive activity at Mt. Redoubt continues with eruption clouds extending as high as 50,000 ft. above sea level.","sentUtc":"2009-03-28","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-03-28T10:29:44-00:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-03-28T10:29:44-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-03-28T10:29:44-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090328\/0854Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A23\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003E\u003Cb\u003ECORRECTED\u003C\/b\u003E from previous: An explosive eruption of Redoubt volcano occurred at approximately \u003Cb\u003E23:20 AKDT (07:20 UTC)\u003C\/b\u003E. National Weather Service reports the cloud height to be approximately \u003Cb\u003E40,000 ft\u003C\/b\u003E above sea level based on radar.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFor ash fall advisories, refer to the National Weather Service Redoubt Coordination web page \u003Cbr \/\u003E\r\nhttp:\/\/pafc.arh.noaa.gov\/volcano.php  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO is monitoring the situation closely, the observatory is staffed 24\/7. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu  \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"An eruption of Redoubt volcano occurred at 23:20 AKDT (07:20 UTC).  National Weather Service reports an ash cloud height to 40,000 feet above sea level.","sentUtc":"2009-03-28","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-03-28T08:54:02-00:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-03-28T08:54:02-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-03-28T08:54:02-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090328\/0829Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A22\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn explosive eruption of Redoubt volcano occurred at approximately 19:25 AKDT (03:25 UTC). National Weather Service reports the cloud height to be approximately 51,000 ft above sea level based on radar.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFor ash fall advisories, refer to the National Weather Service Redoubt Coordination web page \u003Cbr \/\u003E\r\nhttp:\/\/pafc.arh.noaa.gov\/volcano.php  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO is monitoring the situation closely, the observatory is staffed 24\/7. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"An eruption of Redoubt volcano occurred at 23:20 AKDT (07:20 UTC).  National Weather Service reports an ash cloud height to 40,000 feet above sea level.","sentUtc":"2009-03-28","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-03-28T08:29:45-00:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-03-28T08:29:45-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-03-28T08:29:45-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090328\/0434Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A21\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn explosive eruption of Redoubt volcano occurred at approximately 19:25 AKDT (03:25 UTC). National Weather Service reports the cloud height to be approximately 51,000 ft above sea level based on radar.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFor ash fall advisories, refer to the National Weather Service Redoubt Coordination web page http:\/\/pafc.arh.noaa.gov\/volcano.php\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO is monitoring the situation closely, the observatory is staffed 24\/7. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"An eruption of Redoubt volcano occurred at 19:25 AKDT (03:25 UTC).  National Weather Service reports an ash cloud height to 51,000 feet above sea level.","sentUtc":"2009-03-28","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-03-28T04:34:04-00:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-03-28T04:34:04-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-03-28T04:34:04-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090328\/0249Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A20\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn explosive eruption of Redoubt volcano occurred at approximately 17:35 AKDT (1:35 UTC). National Weather Service reports the cloud height to be approximately 40,000 ft above sea level based on radar.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFor ash fall advisories, refer to the National Weather Service Redoubt Coordination web page http:\/\/pafc.arh.noaa.gov\/volcano.php\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO is monitoring the situation closely, the observatory is staffed 24\/7. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"An eruption of Redoubt volcano occurred at 17:35 AKDT (1:35 UTC).  National Weather Service reports an ash cloud height to 40,000 feet above sea level.","sentUtc":"2009-03-28","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-03-28T02:49:31-00:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-03-28T02:49:31-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-03-28T02:49:31-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090327\/1751Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A19\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn eruption of Redoubt volcano occurred at approximately 08:40 AKDT (16:40 UTC).  National Weather Service reports the cloud height to be approximately 50,000 ft above sea level based on radar. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFor ash fall advisories, refer to the National Weather Service Redoubt Coordination web page http:\/\/pafc.arh.noaa.gov\/volcano.php\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO is monitoring the situation closely, the observatory is staffed 24\/7. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"An eruption at Redoubt at 08:40 AKDT. Preliminary cloud heights are reported to about 50,000 ft. above sea level.","sentUtc":"2009-03-27","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-03-27T17:51:49-00:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-03-27T17:51:49-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-03-27T17:51:49-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090327\/0900Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A18\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn eruption of Redoubt volcano occurred at approximately 23:48 AKDT (7:48 UTC).  National Weather Service reports the cloud height to be at least 32,000 ft above sea level. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFor ash fall advisories, refer to the National Weather Service Redoubt Coordination web page http:\/\/pafc.arh.noaa.gov\/volcano.php\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO is monitoring the situation closely, the observatory is staffed 24\/7. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"An eruption at Redoubt at 23:48 AKDT. Preliminary cloud heights are reported to at least 32,000 ft. above sea level.","sentUtc":"2009-03-27","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-03-27T09:00:37-00:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-03-27T09:00:37-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-03-27T09:00:37-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090326\/1842Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A17\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA large eruption of Redoubt volcano began at roughly 09:24 AKDT (17:24 UTC).  National Weather Service reports the cloud height to be at least 65,000 ft above sea level. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nRefer to the NWS Redoubt Coordination web page (http:\/\/pafc.arh.noaa.gov\/volcano.php) for latest cloud information.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"A large eruption at Redoubt began at 09:24 AKDT. Cloud heights are reported to at least 65,000 ft. above sea level.","sentUtc":"2009-03-26","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-03-26T18:42:14-00:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-03-26T18:42:14-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-03-26T18:42:14-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090326\/1756Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A16\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAVO is raising the aviation color code to Red and the alert level to Warning at Redoubt volcano. An explosive event beginning at roughly 08:34 AKDT has produced an eruption cloud to at least 30,000 ft. above sea level.  The event continues.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Explosive event began roughly 08:34.  Reported cloud heights to 30, 000 ft above sea level.","sentUtc":"2009-03-26","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-03-26T17:56:56-00:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-03-26T17:56:56-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-03-26T17:56:56-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090325\/2235Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A15\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismic activity at Redoubt Volcano has declined over the last 36 hours, although there have been several brief increases in seismicity associated with minor low-level ash emissions. The last known ash emission was at 5:12 AKDT this morning. The plume from this event did not extend above about 15,000 feet. Based on the level of seismic activity, AVO is lowering the aviation color code to ORANGE and the volcanic alert level to WATCH. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCurrent seismicity at Redoubt is at times suggestive of intermittent lava extrusion at the volcano's summit. However, the existence of a new lava dome has not been confirmed because of poor weather.  Growth of lava domes is common at volcanoes like Redoubt and was observed several times throughout the last eruption of 1989-1990.  As dome size increases, so does the possibility of dome collapse along with a return to a more explosive eruptive style.  Though a distinct rise in seismicity often precedes dome failure, domes can fail with little or no warning and may result in a sudden explosion and ash emission.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nBased on observations from the Redoubt eruption of 1989-1990, episodes of dome growth followed by explosive dome destruction is a likely but by no means certain, near-term scenario. Cycles of dome growth and failure could occur for several months. In the event of an escalation in seismic activity or confirmation of a significant ash producing eruption, AVO would accordingly raise the color code and alert level to Red\/Warning.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nIt is possible that dome collapse events will initiate pyroclastic flows over Drift glacier that will result in meltwater generation and downstream mudflows and floods. Some of these floods could reach Cook Inlet within hours.  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EOver a 21 hour period beginning on Sunday, at March 22, 2009, 22:38 AKDT (Monday, March 23, 2009, 06:38 UTC ), 6 separate explosions occurred at Redoubt Volcano, each producing ash plumes exceeding 30,000 feet (10,000 m) above sea level. The last of these explosions occurred on Monday, March 23, 2009, at 19:41 AKDT (Tuesday, March 24, 2009, 03:41 UTC), about 36 hours ago as of this writing.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDuring and following these events, large lahars (volcanic mud and debris flows) were observed traveling down the Drift River Valley, some reaching the mouth of the Valley at the Cook Inlet. Light ashfall (less than 5 mm) from the explosions has been reported at several locales spanning a region of about 100,000 square kilometers, mainly to the north of the volcano.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No explosions in last 36 hours and seismicity has declined.  Possible lava dome growth at the summit. Explosions could resume without much warning.","sentUtc":"2009-03-25","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-03-25T22:35:06-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-03-25T22:35:06-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-03-25T22:35:06-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090325\/1453Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A14\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA small explosion occurred at Redoubt volcano at 05:12 AKDT (1312 UTC).  The cloud height is estimated to be about 15,000 ft and is drifting north to northwest of the volcano.  The event lasted about 10 minutes.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Small explosion at 05:12 AKDT, 1312 UTC, cloud height at 15,000 ft above sea level. ","sentUtc":"2009-03-25","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-03-25T14:53:13-00:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-03-25T14:53:13-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-03-25T14:53:13-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090324\/0514Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A13\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAnother phase of vigorous ash eruption at Redoubt Volcano began at 7:41 pm (AKDT). AVO remains at Aviation Color Code RED and Alert Level WARNING.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe top of the ash cloud is estimated to be at least 50,000 ft above sea level based on NWS radar.  Winds in the vicinity of the volcano vary with altitude and are expected to carry the ash cloud primarily to the west and north.  Seismicity has declined somewhat since the start of the event but remains elevated.\u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\nAVO remains staffed 24 hours per day will issue further information as it becomes available.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nFor up-to-date Ashfall Advisories and wind trajectories, please refer to the National Weather Service website: http:\/\/pafc.arh.noaa.gov\/volcano.php\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"A significant explosive event at Redoubt began at 0341 UTC (7:41 pm local).  The top of the volcanic cloud is in excess of 50,000 ft above sea level.  ","sentUtc":"2009-03-24","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-03-24T05:14:56-00:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-03-24T05:14:56-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-03-24T05:14:56-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090323\/0826Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A12\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe eruption of Mt. Redoubt continues. The height of the eruption cloud is estimated to be 50,000 ft above sea level.  Further reports will be issued as more information becomes available. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"An eruption of Mt. Redoubt, AK, began at approximately 22:38 AKDT, March 22, 2009 (0638 UTC). Eruption cloud height estimated at 50,000 ft above sea level.","sentUtc":"2009-03-23","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-03-23T08:26:32-00:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-03-23T08:26:32-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-03-23T08:26:32-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090323\/0756Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A11\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAn eruption of Mt. Redoubt began at approximately 22:38 AKDT, March 22, 2009 (0638 UTC). AVO is raising the aviation color code to Red and the alert level to Warning.  Initial height of the eruption cloud is estimated at less than 20,000 ft above sea level at present. Further reports will be issued as more information becomes available. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"An eruption of Mt. Redoubt, AK, began at approximately 22:38 AKDT, March 22, 2009 (0638 UTC).","sentUtc":"2009-03-23","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-03-23T07:56:25-00:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-03-23T07:56:25-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-03-23T07:56:25-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090322\/0709Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A10\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAVO is raising the aviation color code to Orange and the alert level to Watch. Seismic activity has continued to increase and conditions may evolve rapidly culminating in an eruption within days to weeks.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Likelihood of eruption has increased.","sentUtc":"2009-03-22","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-03-22T07:09:44-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-03-22T07:09:44-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-03-22T07:09:44-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090320\/2001Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EOkmok  (VNUM #311290)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A9\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 23 min W 168 deg 9 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E3520 ft (1073 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAVO is decreasing the Aviation Color Code to GREEN and the Volcanic Alert Level to NORMAL for Okmok volcano. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSeismic activity at Okmok has been at low to near background levels and satellite views show no activity over the past two weeks. AVO has received no reports of activity.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EOkmok volcano was in vigorous eruption from July 12 through mid-August, 2008. Energetic, intermittent ash emission from several vents within the caldera blanketed much of the northeast portion of Umnak Island with ash and dusted Unalaska\/Dutch Harbor with fine ash on several occasions. Rain-induced remobilization of debris from high on the volcano's flanks produced lahars down many drainages, forming new deltas at the coastline. A new, 200-300 m-high (660-980 ft) tephra cone developed inside the caldera at the primary eruption site. Since late August 2008, seismicity at Okmok has generally declined. The last confirmed ash emission at Okmok occurred on August 19, 2008.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nOkmok volcano is a 6-mile-wide caldera that occupies most of the eastern end of Umnak Island, located 75 miles southwest of Unalaska\/Dutch Harbor in the eastern Aleutian Islands. Okmok has had several eruptions in historic time typically consisting of ash emissions occasionally to over 30,000 feet ASL but generally much lower; lava flows crossed the caldera floor in 1945 and 1958. Prior to 2008, the volcano last erupted in February 1997 producing lava flows and intermittent ash emissions over the course of several months.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe nearest settlement is Nikolski, population about 35, roughly 45 miles west of the volcano. A ranch caretaker family lives at Fort Glenn on the flank of the volcano about 6 miles east of the caldera rim.\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Decreased seismic activity. No eruptive activity observed.","sentUtc":"2009-03-20","obs":"avo","vName":"Okmok","vnum":"311290","noticeId":"DOI-USGS-AVO-2009-03-20T20:01:48-00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-03-20T20:01:48-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-03-20T20:01:48-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090318\/1841Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A8\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe Alaska Volcano Observatory is lowering the Aviation Color Code to \u003Cb\u003EYELLOW\u003C\/b\u003E and the Alert Level to Advisory for Mount Redoubt. Following the steam and ash emission on Sunday, March 15, seismicity has declined to levels prior to that event, and no additional emissions have been observed in web camera or satellite images.  The new magma beneath the volcano does not show signs of upward movement at this time. The volcano remains restless with abnormally high rates of gas emission and continued melting of the summit glacier. It is still possible for the current period of unrest to result in an eruption. However, the type of unrest we have observed so far could persist for many months to a year or more and not lead to an eruption. It is possible for conditions at the volcano to change rapidly, advancing from relatively low levels of activity to eruption in time periods as short as 24 hours or less.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO will continue to monitor Redoubt closely, but will no longer be formally staffed 24 hours per day. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"It does not appear at this time that a significant eruption is likely in the short term, but conditions may evolve rapidly.\r\n","sentUtc":"2009-03-18","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-03-18T18:41:36-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-03-18T18:41:36-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-03-18T18:41:36-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090315\/2350Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A7\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismic activity at Redoubt has increased since about 13:00 AKDT and is continuing. An AVO observation flight reported that a steam and ash plume rose as high as 15,000 ft above sea level and produced minor ash fall on the upper south flank of Redoubt. Last reports are that the plume is now mainly steam.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nBased on thsi change in activity AVO is increasing the level of concern and alert level to ORANGE\/WATCH.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nIt does not appear at this time that a significant eruption is likely in the short term, but conditions may evolve rapidly. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO is monitoring the situation closely and the AVO operations center in Anchorage is now resuming 24 hour per day staffing.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Color code and alert levels to orange\/watch. Minor ash emission on upper flanks of volcano.","sentUtc":"2009-03-15","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-03-15T23:50:14-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-03-15T23:50:14-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-03-15T23:50:14-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090310\/1856Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A6\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe Alaska Volcano Observatory is lowering the Aviation Color Code to YELLOW and the Alert Level to Advisory for Mount Redoubt. The new magma beneath the volcano does not show any signs of upward movement at this time. The volcano remains restless with abnormally high gas emission rates and melting of the summit glacier still evident. It is still quite possible, though far from certain, that the current volcanic unrest at Mount Redoubt could result in an eruption.  Also, this unrest could persist for many months to a year or more and not lead to an eruption. During this unrest, it is possible for unrest at the volcano to change rapidly, advancing from relatively low levels to eruption in time periods as short as 24 hours or less. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAVO will continue to monitor Redoubt closely, but will no longer be formally staffed 24 hours per day.  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Color code and alert levels lowered to yellow and advisory at Mt. Reodubt. Likelihood of an eruption within days is diminished. ","sentUtc":"2009-03-10","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-03-10T18:56:59-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-03-10T18:56:59-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-03-10T18:56:59-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090303\/0552Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EOkmok  (VNUM #311290)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            GREEN                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A5\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 23 min W 168 deg 9 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E3520 ft (1073 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAVO is increasing the Aviation Color Code to YELLOW and the Volcanic Alert Level to ADVISORY for Okmok volcano. Over the past 24 hours there have been short bursts of volcanic tremor at Okmok volcano. These bursts are occurring at a rate of one per hour on average. This is the first sign significant seismic activity at the volcano since the cessation of eruption in August 2008 and represents an increase above typical background activity. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThis increase in seismic activity does not necessarily indicate that an eruption will occur, or that an eruption is likely. Clouds currently obscure satellite views of the volcano. However there is no evidence that an eruption has occurred. The AVO Operations Room is currently being staffed 24\/7 due to unrest at Redoubt Volcano.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EOkmok volcano was in vigorous eruption from July 12 through mid-August, 2008. Energetic, intermittent ash emission from several vents within the caldera blanketed much of the northeast portion of Umnak Island with ash and dusted Unalaska\/Dutch Harbor with fine ash on several occasions. Rain-induced remobilization of debris from high on the volcano's flanks produced lahars down many drainages, forming new deltas at the coastline. A new, 200-300 m-high (660-980 ft) tephra cone developed inside the caldera at the primary eruption site. Since late August 2008, seismicity at Okmok has generally declined. The last confirmed ash emission at Okmok occurred on August 19, 2008.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nOkmok volcano is a 6-mile-wide caldera that occupies most of the eastern end of Umnak Island, located 75 miles southwest of Unalaska\/Dutch Harbor in the eastern Aleutian Islands. Okmok has had several eruptions in historic time typically consisting of ash emissions occasionally to over 30,000 feet ASL but generally much lower; lava flows crossed the caldera floor in 1945 and 1958. Prior to 2008, the volcano last erupted in February 1997 producing lava flows and intermittent ash emissions over the course of several months.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe nearest settlement is Nikolski, population about 35, roughly 45 miles west of the volcano. A ranch caretaker family lives at Fort Glenn on the flank of the volcano about 6 miles east of the caldera rim. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Increased seismic activity. No eruptive activity observed.","sentUtc":"2009-03-03","obs":"avo","vName":"Okmok","vnum":"311290","noticeId":"DOI-USGS-AVO-2009-03-03T05:52:43-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-03-03T05:52:43-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-03-03T05:52:43-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090212\/0111Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin  (VNUM #311360)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A4\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E9373 ft (2857 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003E\u003Cbr \/\u003E\r\nThe Alaska Volcano Observatory is lowering the Aviation Color Code to GREEN and the Alert Code to NORMAL at Shishaldin volcano.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSeismic levels at Shishaldin volcano have decreased to background levels and have been at this level since late December 2008.  A very weak thermal anomaly was last detected on February 3, 2009.  Reports of steam issuing from the summit crater continue to be received although this is not anomalous activity at this volcano; steaming is typical.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cbr \/\u003E\r\nShishaldin volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A small summit crater typically emits a noticeable steam plume with occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, erupting atleast 28 times since 1775.  Most of Shishaldin's eruptions have consisted of small ash and steam plumes, although the most recent eruption in April-May 1999 produced an ash column that reached a height of 45,000 ft above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cbr \/\u003E\r\nTom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cbr \/\u003E\r\nA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"volcano at background levels","sentUtc":"2009-02-12","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2009-02-12T01:11:29-00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-02-12T01:11:29-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-02-12T01:11:29-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090125\/1109Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A3\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismic activity at Redoubt volcano has increased markedly.  This activity could be precursory to an eruption, perhaps within hours to days.  There is no indication that the volcano is currently erupting.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EHeavily ice-mantled Redoubt volcano is located on the western side of Cook Inlet, 170 km (106 mi) southwest of Anchorage and 82 km (51 mi) west of Kenai, within Lake Clark National Park. Redoubt is a stratovolcano which rises to 10,198 feet above sea level. Recent eruptions occurred in 1902, 1966-68, and 1989-90. The 1989-90 eruption produced mudflows, or lahars, that traveled down the Drift River and partially flooded the Drift River Oil Terminal facility. The ash plumes produced by the 1989-90 eruption affected international air traffic and resulted in minor or trace amounts of ash in the city of Anchorage and other nearby communities.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Seismic activity has increased.  Likelihood of an eruption, perhaps within days increased.","sentUtc":"2009-01-25","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2009-01-25T11:09:57-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-01-25T11:09:57-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-01-25T11:09:57-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090107\/0028Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin  (VNUM #311360)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A2\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 54 deg 45 min W 163 deg 58 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E9373 ft (2857 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAVO has detected a significant thermal anomaly and a slight increase in earthquake activity at Shishaldin Volcano on Unimak Island in the eastern Aleutians.  Together, these observations indicate a departure from background conditions at Shishaldin. AVO is raising the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY. There is no indication that an eruption is imminent or certain, although the potential for an eruption has increased.  AVO will continue to monitor the volcano closely.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EShishaldin volcano, located near the center of Unimak Island in the eastern Aleutian Islands, is a spectacular symmetric cone with a base diameter of approximately 10 miles (16 km). A small summit crater typically emits a noticeable steam plume with occasional small amounts of ash. Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc, erupting atleast 28 times since 1775.  Most of Shishaldin's eruptions have consisted of small ash and steam plumes, although the most recent eruption in April-May 1999 produced an ash column that reached a height of 45,000 ft above sea level.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPeter Cervelli, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\npcervelli@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJon Dehn, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njdehn@gi.alaska.edu (907) 474-6499\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Increased potential for eruption.","sentUtc":"2009-01-07","obs":"avo","vName":"Shishaldin","vnum":"311360","noticeId":"DOI-USGS-AVO-2009-01-07T00:28:17-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-01-07T00:28:17-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-01-07T00:28:17-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20090102\/2151Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2009\/A1\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EA brief but explosive ash emission was detected in satellite images of Cleveland Volcano this morning. An ash plume was apparent in images obtained at 1645 UTC, 1809 UTC, 1812 UTC, and 1823 UTC. The ash plume reached an altitude of about 6 km (20,000 ft) drifted east-southeast about 240 km (150 mi) and dispersed over the North Pacific.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThis was a brief, short-lived, but explosive ash emission event from Cleveland Volcano and is typical of the type of events observed at this volcano in the past. Because the event was brief and the ash plume was relatively low level and dispersed rapidly AVO is not raising the color code or alert level. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJon Dehn, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\njdehn@gi.alaska.edu (907) 474-6499\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Short-lived ash emission to about 20,000 feet. Appears to have rapidly dispersed over the ocean E-SE of the volcano.","sentUtc":"2009-01-02","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2009-01-02T21:51:41-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2009-01-02T21:51:41-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2009-01-02T21:51:41-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20081224\/2222Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            UNASSIGNED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2008\/A34\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAVO is raising the aviation color code to Yellow and the alert level to Advisory. Satellite images acquired last night show a persistent thermal anomaly near the summit of Cleveland volcano.  Such observations in the past have many times, but not always, preceded eruptive activity that has sent ash to altitudes of more than 20,000 ft above sea level and in 2001 as high as 39,000 ft. Eruptions in July 2008 produced ash plumes exceeding 25,000 ft.  Cleveland volcano is not seismically monitored; satellite images and pilot reports are the primary source of information.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland volcano forms the western half of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. It is located about about 75 km (45 mi.) west of the community of Nikolski, and 1500 km (940 mi.) southwest of Anchorage. In February 2001 three explosive events occured at the volcano that produced ash clouds as high as 12 km (39,000 ft) above sea level. That eruption also produced a rubbly lava flow and hot avalanche that reached the sea. Minor explosive activity (cloud heights occasionally in excess of 20,000 ft. above sea level) has occurred periodically since 2001. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nMike West, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\nwest@gi.alaska.edu (907) 474-6977\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"The aviation color code is raised to Yellow and the alert level to Advisory for Cleveland volcano based on a persistent thermal anomaly seen in satelite data.","sentUtc":"2008-12-24","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2008-12-24T22:22:15-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2008-12-24T22:22:15-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2008-12-24T22:22:15-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20081119\/1854Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EOkmok  (VNUM #311290)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EGREEN\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2008\/A33\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 23 min W 168 deg 9 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E3520 ft (1073 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EOver the past month, seismic activity at Okmok volcano has continued to decrease and is now at or very near pre-eruption levels. The last confirmed ash emission at Okmok occurred on August 19. The likelihood of a resumption of eruptive activity at Okmok has greatly diminished, therefore, we are reducing the Aviation Color Code to GREEN and Volcanic Alert Level to NORMAL for Okmok. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EOkmok volcano was in vigorous eruption from July 12 through mid-August, 2008. Energetic, intermittent ash emission from several vents within the caldera blanketed much of the northeast portion of Umnak Island with ash and dusted Unalaska\/Dutch Harbor with fine ash on several occasions. Rain-induced remobilization of debris from high on the volcano's flanks produced lahars down many drainages, forming new deltas at the coastline. A new, 200-300 m-high (660-980 ft) tephra cone developed inside the caldera at the primary eruption site. Since late August, seismicity at Okmok has generally declined. Occasional thermal anomalies visible in satellite images likely reflect the still-warm vent area, fumaroles, and\/or lake within the caldera. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nOkmok volcano is a 6-mile-wide caldera that occupies most of the eastern end of Umnak Island, located 75 miles southwest of Unalaska\/Dutch Harbor in the eastern Aleutian Islands. Okmok has had several eruptions in historic time typically consisting of ash emissions occasionally to over 30,000 feet ASL but generally much lower; lava flows crossed the caldera floor in 1945 and 1958. Prior to 2008, the volcano last erupted in February 1997 producing lava flows and intermittent ash emissions over the course of several months.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe nearest settlement is Nikolski, population about 35, roughly 45 miles west of the volcano. A ranch caretaker family lives at Fort Glenn on the flank of the volcano about 6 miles east of the caldera rim. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPeter Cervelli, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\npcervelli@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nMike West, Acting Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nwest@gi.alaska.edu (907) 474-6977\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No activity observed.","sentUtc":"2008-11-19","obs":"avo","vName":"Okmok","vnum":"311290","noticeId":"DOI-USGS-AVO-2008-11-19T18:54:26-00:00","colorCode":"GREEN","alertLevel":"NORMAL","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2008-11-19T18:54:26-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2008-11-19T18:54:26-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20081105\/2352Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ERedoubt  (VNUM #313030)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2008\/A32\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 60 deg 29 min W 152 deg 44 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tCook Inlet-South Central\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E10197 ft (3108 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EOver the past several months, AVO has detected potentially significant changes in gas emission and heat output from Redoubt Volcano. These changes are a departure from long-observed background activity, and therefore, AVO is raising the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY. There is no indication that an eruption is imminent or even certain. AVO is monitoring Redoubt closely and is making plans to install additional equipment on the volcano in the next several weeks.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EHeavily ice-mantled Redoubt volcano is located on the western side of Cook Inlet, 170 km (106 mi) southwest of Anchorage and 82 km (51 mi) west of Kenai, within Lake Clark National Park. Redoubt is a stratovolcano which rises to 10,198 feet above sea level. Recent eruptions occurred in 1902, 1966-68, and 1989-90. The 1989-90 eruption produced mudflows, or lahars, that traveled down the Drift River and partially flooded the Drift River Oil Terminal facility. The ash plumes produced by the 1989-90 eruption affected international air traffic and resulted in about 5 mm (0.2 inches) of ash in Kenai and trace amounts of ash in Anchorage and other nearby communities.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Alert level increase to Advisory\/Yellow. AVO has detected potentially significant changes in gas and heat output from Redoubt Volcano. ","sentUtc":"2008-11-05","obs":"avo","vName":"Redoubt","vnum":"313030","noticeId":"DOI-USGS-AVO-2008-11-05T23:52:26-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2008-11-05T23:52:26-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2008-11-05T23:52:26-00:00","nvewsThreat":"Very High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20081031\/0041Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EKasatochi  (VNUM #311130)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2008\/A31\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 10 min W 175 deg 30 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E1030 ft (314 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EOver the past 2 months, seismic activity detected on regional networks in the vicinity of Kasatochi Volcano has steadily declined in intensity.  Overflights and satellite imagery show no indication of significant continuing unrest.  The likelihood of resumed eruptive activity at Kasatochi has greatly diminished, therefore, we are reducing the Aviation Color Code to UNASSIGNED and Volcanic Alert Level to UNASSIGNED.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EThe 2008 eruption occurred on August 7, 2008 after several days of felt earthquakes, observed rockfalls, and sulfur smell reported by USFWS biologists on the island.  At least three violent explosions sent ash and gas clouds as high as 60,000 ft above sea level.  Pyroclastic debris from the explosions blanketed the entire island and extended the shoreline seaward.  The summit crater widened and the lake vanished during the explosions; water is now re-filling the summit crater producing a brownish-green, warm, and probably acidic lake.  \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nContinuing earthquake activity measured on the Great Sitkin Island seismic network is dominated by regional tectonic events unrelated to Kasatochi.  Occasional thermal anomalies visible in satellite images are produced by the still-warm, fresh, volcanic deposits and crater lake.  It is important to note that AVO has no seismic instrumentation on Kasatochi Volcano.  Our reliance on adjacent networks on Great Sitkin and Atka Islands means small earthquakes that may occur prior to an eruption could go undetected.  Despite this, the steadily declining regional seismicity and no visual signs of accelerated unrest seen in satellite data or by flight crews or mariners suggests renewed eruption is unlikely.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nKasatochi Island is the summit of a predominantly submarine volcano composed of basaltic and andesitic lava flows and pyroclastic deposits. The volcanic cone has a circular central crater more than 1 km (3300 ft) across. Prior to the 2008 eruption, the high point of the crater rim was about 314 m (1030 ft) above sea level. \u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nHistorical eruptions at Kasatochi are poorly documented, although it is possible that eruptions attributed to nearby Konuiji volcano in 1760, 1827, and 1828 were actually eruptions of Kasatochi. Eruptive activity in 1899 may have destroyed the lake within the Kasatochi crater. Kasatochi is 83 km (52 mi) east of the community of Adak, and 90 km (55 mi) west of the community of Atka. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if\u003Cbr \/\u003E\r\nconditions change significantly or alert levels are modified. While a VAN\u003Cbr \/\u003E\r\nis in effect, regularly scheduled updates are posted at\u003Cbr \/\u003E\r\nhttp:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Alert level decrease to Unassigned\/Unassigned. No new activity observed.","sentUtc":"2008-10-31","obs":"avo","vName":"Kasatochi","vnum":"311130","noticeId":"DOI-USGS-AVO-2008-10-31T00:41:08-00:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2008-10-31T00:41:08-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2008-10-31T00:41:08-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20081009\/2159Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EUNASSIGNED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2008\/A30\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EAVO is downgrading the Level of Concern Color Code for Cleveland Volcano to UNASSIGNED and the Alert Code to UNASSIGNED. Because Cleveland is not monitored with real-time seismic instrumentation, we do not assign it green or normal, because the absence of unrest cannot be confirmed.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe level of volcanic activity at Cleveland has declined significantly over the past month.  The last thermal anomaly observed in satellite imagery was on September 4 and clear web-camera views show a white snow-capped summit.  AVO has received no information to suggest that volcanic activity is continuing.   \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAVO monitors Cleveland Volcano with satellite imagery as weather allows. The lack of a real-time seismic network at Cleveland prevents AVO from tracking local earthquake activity related to volcanic unrest. Short-lived explosions of ash that could exceed 20,000 ft above sea level can occur without warning and may go undetected on satellite imagery.\u003Cbr \/\u003E\r\n \u003Cbr \/\u003E\r\nCleveland volcano forms the western half of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. It is located about about 75 km (45 mi.) west of the community of Nikolski, and 1500 km (940 mi.) southwest of Anchorage. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Alert level decrease to Unassigned\/Unassigned. The level of volcanic activity has declined significantly over the past month. Because Cleveland is not monitored with real-time seismic instrumentation, the absence of unrest cannot be confirmed.","sentUtc":"2008-10-09","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2008-10-09T21:59:36-00:00","colorCode":"UNASSIGNED","alertLevel":"UNASSIGNED","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2008-10-09T21:59:36-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2008-10-09T21:59:36-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20080904\/2326Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EKasatochi  (VNUM #311130)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2008\/A29\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 10 min W 175 deg 30 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E1030 ft (314 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismic activity at Kasatochi volcano has declined significantly since the eruptions on August 7. No activity has been observed in satellite data since August 12. Therefore AVO is lowering the aviation color code from ORANGE to YELLOW and the Alert Level from Watch to Advisory.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EKasatochi Volcano does not have a seismic network, thus AVO depends on networks on neighboring islands to monitor activity there. For this reason, low-level seismic activity may not be detected. Renewed volcanic activity is possible at any time with little or no warning.  \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ETom Murray, Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\ntlmurray@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Seismic activity continues. ","sentUtc":"2008-09-04","obs":"avo","vName":"Kasatochi","vnum":"311130","noticeId":"DOI-USGS-AVO-2008-09-04T23:26:40-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2008-09-04T23:26:40-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2008-09-04T23:26:40-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20080827\/2253Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EOkmok  (VNUM #311290)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2008\/A28\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 23 min W 168 deg 9 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E3520 ft (1073 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESeismicity at Okmok Volcano has been steadily declining for the past eight days and significant ash plumes have not been observed since August 19.  Therefore AVO is lowering the aviation color code from Orange to Yellow and the Alert Level from Watch to Advisory.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EVisual observations of the caldera floor made on August 23 indicate that low level eruptive activity has also likely stopped.  It is possible for vigorous ash emissions to resume at any time. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAF\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907) 474-7131\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Seismicity at Okmok has been declining for 8 days. AVO is lowering the aviation color code from Orange to Yellow and the Alert Level from Watch to Advisory.","sentUtc":"2008-08-27","obs":"avo","vName":"Okmok","vnum":"311290","noticeId":"DOI-USGS-AVO-2008-08-27T22:53:44-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2008-08-27T22:53:44-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2008-08-27T22:53:44-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20080825\/2351Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2008\/A27\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESatellite imagery obtained over the past few days has shown that eruptive activity at Cleveland volcano has significantly declined. AVO has received no additional information about activity at Cleveland.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EEruptive activity may resume at Cleveland volcano without warning.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJon Dehn, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndehn@gi.alaska.edu (907) 474-6499\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"No recent thermal anomalies observed.","sentUtc":"2008-08-25","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2008-08-25T23:51:40-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2008-08-25T23:51:40-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2008-08-25T23:51:40-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20080811\/2252Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2008\/A26\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThermal signatures as recorded from satellite indicate that Cleveland is still actively erupting.  The eruption seems to be predominately lava flows down its flanks.  Based on Cleveland currently being in eruption, the Aviation Color Code for Cleveland is increased from Yellow to Orange. The Alert Level remains at Watch. No ash plumes have been observed in satellite images since July 29.  \u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPlease see http:\/\/www.avo.alaska.edu\/activity\/Cleveland.php for more information.\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nchris@usgs.gov, (907)786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJon Dehn, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndehn@gi.alaska.edu (907) 474-6499\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Cleveland continues to erupt lava. No indication of ash plumes.","sentUtc":"2008-08-11","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2008-08-11T22:52:30-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2008-08-11T22:52:30-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2008-08-11T22:52:30-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20080810\/0704Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EKasatochi  (VNUM #311130)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2008\/A25\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 10 min W 175 deg 30 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E1030 ft (314 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe intense seismic activity associated with the Kasatochi eruption has declined and is no longer detected on the AVO seismic network on nearby Great Sitkin Island (about 40 km (25 mi) to the east). Vigorous ash emissions (up to 35,000 feet) have not been observed in satellite data for about 36 hours and AVO has received no pilot reports of ash clouds. Passing mariners report nothing unusual and no obvious indications that an explosive eruption is in progress. It appears that explosive eruptive activity has waned and AVO is lowering the aviation color code and alert level to ORANGE\/WATCH.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EBecause Kasatochi lacks a seismic network, it may be difficult to determine if or when ash emissions may resume and the volcano remains in a hazardous state. It is possible for explosive activity to resume with little or no warning.\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nchris@usgs.gov, (907)786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJon Dehn, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndehn@gi.alaska.edu (907) 474-6499\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Seismic activity at Kasatochi can no longer be detected on nearby stations. No ash observed in satellite data and observations by passing boats indicate activity has declined.","sentUtc":"2008-08-10","obs":"avo","vName":"Kasatochi","vnum":"311130","noticeId":"DOI-USGS-AVO-2008-08-10T07:04:18-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2008-08-10T07:04:18-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2008-08-10T07:04:18-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20080808\/0026Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EKasatochi  (VNUM #311130)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2008\/A24\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 10 min W 175 deg 30 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E1030 ft (314 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESatellite data show an ash plume to an altitude of at least 35,000 ft. in the vicinity of Kasatochi Volcano 22:30 UTC (14:30 ADT). The plume is drifting to the south-southwest. Based on this information, we are elevating the color code to RED\/WARNING. This follows the recent increase in volcanic and earthquake activity.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAVO is monitoring this situation closely and has its operations room staffed 24 hours per day. More information about activity at Kasatochi Volcano can be found on the AVO web siteat www.avo.alaska.edu or by calling 907-786-7497.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nKasatochi Island represents the emergent summit of a predominantly submarine volcano composed of basaltic and andesitic flows and pyroclastics. Kasatochi has had no known historical eruptions; however, the volcano is mantled by a cover of young appearing pyroclastic debris indicative of relatively recent explosive activity. The island consists of a single, undissected cone with a central lake-filled crater about 0.75 km in diameter. A maximum height of 314 m is on the southern crater rim; elevation of the lake is less than about 60 m. Kasatochi Island is at the northern end of a 15-km-long, 6-km-wide submarine ridge that is normal to the trend of the Andreanof Islands. Water depths along the ridge are less than 90 m; if Kasatochi is constructed entirely on the ridge, the total height of the volcanic pile is only a little more than 400 m. Kasatochi is 83 km (52 mi) east of the community of Adak , and 90 km (55 mi) west of the community of Atka. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nchris@usgs.gov, (907)786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJon Dehn, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndehn@gi.alaska.edu (907) 474-6499\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Eruption in progress. Large earthquakes and volcanic tremor are occurring in the vicinity of Kasatochi Volcano.  Kasatochi is an unmonitored volcano with no seismic network.","sentUtc":"2008-08-08","obs":"avo","vName":"Kasatochi","vnum":"311130","noticeId":"DOI-USGS-AVO-2008-08-08T00:26:35-00:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2008-08-08T00:26:35-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2008-08-08T00:26:35-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20080807\/2257Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EKasatochi  (VNUM #311130)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            YELLOW                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2008\/A23\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 10 min W 175 deg 30 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E1030 ft (314 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EEarthquake activity in the vicinity of Kasatochi Volcano continues and is now being accompanied by periods of volcanic tremor. Volcanic tremor is often associated with fluid or magma migration. This morning, a US Fish and Wildlife Service field crew on Kasatochi Island reported periods of continuous ground shaking lasting 5-10 minutes, numerous rockfalls, and strong sulfur smell. These observations combined with the elevated seismicity suggest that an eruption is more likely and AVO is raising the color code and alert level to ORANGE\/WATCH.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EAVO is monitoring this situation closely and has its operations room staffed 24 hours per day. More information about activity at Kasatochi Volcano can be found on the AVO web siteat www.avo.alaska.edu or by calling 907-786-7497.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nKasatochi Island represents the emergent summit of a predominantly submarine volcano composed of basaltic and andesitic flows and pyroclastics. Kasatochi has had no known historical eruptions; however, the volcano is mantled by a cover of young appearing pyroclastic debris indicative of relatively recent explosive activity. The island consists of a single, undissected cone with a central lake-filled crater about 0.75 km in diameter. A maximum height of 314 m is on the southern crater rim; elevation of the lake is less than about 60 m. Kasatochi Island is at the northern end of a 15-km-long, 6-km-wide submarine ridge that is normal to the trend of the Andreanof Islands. Water depths along the ridge are less than 90 m; if Kasatochi is constructed entirely on the ridge, the total height of the volcanic pile is only a little more than 400 m.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nchris@usgs.gov, (907)786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJon Dehn, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndehn@gi.alaska.edu (907) 474-6499\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Large earthquakes and volcanic tremor are occurring in the vicinity of Kasatochi Volcano. Potential for eruptive activity has increased. Kasatochi is an unmonitored volcano with no seismic network.","sentUtc":"2008-08-07","obs":"avo","vName":"Kasatochi","vnum":"311130","noticeId":"DOI-USGS-AVO-2008-08-07T22:57:34-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2008-08-07T22:57:34-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2008-08-07T22:57:34-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20080807\/0417Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EKasatochi  (VNUM #311130)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2008\/A22\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 10 min W 175 deg 30 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E1030 ft (314 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EOver the past 12 hours earthquake activity in the greater vicinity of Kasatochi volcano has increased rapidly. Earthquakes are poorly located, and it is possible that the earthquakes are associated with submarine activity. A US Fish and Wildlife Service field crew on Kasatochi Island has reported continual small tremors over the past several days. AVO is elevating the color code at Kasatochi to YELLOW due to the possibility that these earthquakes may result from magma movement toward the surface. The swarm-like character of the seismicity suggests that the activity may be related to the intrusion of magma which may or may not culminate in eruptive activity.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nEarthquake locations are very poor due to the lack of seismic monitoring in this area. There are no seismic instruments on Kasatochi Island and we are detecting the earthquakes on neighboring networks.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EKasatochi Island represents the emergent summit of a predominantly submarine volcano composed of basaltic and andesitic flows and pyroclastics. The island consists of a single, undissected cone with a central lake-filled crater about 0.75 km in diameter. A maximum height of 314 m is on the southern crater rim; elevation of the lake is less than about 60 m. Kasatochi Island is at the northern end of a 15-km-long, 6-km-wide submarine ridge that is normal to the trend of the Andreanof Islands. Water depths along the ridge are less than 90 m; if Kasatochi is constructed entirely on the ridge, the total height of the volcanic pile is only a little more than 400 m.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nchris@usgs.gov (907) 786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJon Dehn, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndehn@gi.alaska.edu (907) 474-6499\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly, alert levels are modified, or if new information becomes available. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Rapid increase in earthquake activity in the vicinity of Kasatochi Volcano. Potential for eruptive activity. Kasatochi is an unmonitored volcano with no seismic network.","sentUtc":"2008-08-07","obs":"avo","vName":"Kasatochi","vnum":"311130","noticeId":"DOI-USGS-AVO-2008-08-07T04:17:45-00:00","colorCode":"YELLOW","alertLevel":"ADVISORY","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2008-08-07T04:17:45-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2008-08-07T04:17:45-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20080806\/2016Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003ECleveland  (VNUM #311240)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EYELLOW\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2008\/A21\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 52 deg 49 min W 169 deg 56 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E5676 ft (1730 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EVolcanic unrest at Cleveland Volcano has decreased over the past week. The strong thermal anomaly observed in satellite views of the summit and flanks of the volcano, first observed July 21, has been decreasing in intensity. This indicates that the hot flows erupted onto the upper west, south, and southeast flanks are slowing or have stopped.  No ash plumes have been observed in satellite images since July 29.  Local observers have not noted plumes or ash fall from the volcano, though visibility is often limited.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe flanks of the volcano remain hazardous and occasional rockfalls and avalanches  or mudflows of hot debris may occur with little or no warning.  The alert level of watch remains in effect.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPlease see http:\/\/www.avo.alaska.edu\/activity\/Cleveland.php for more information.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCleveland volcano forms the western half of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. It is located about 75 km (45 mi.) west of the community of Nikolski, and 1500 km (940 mi.) southwest of Anchorage. The volcano's most recent significant eruption began in February, 2001 and had 3 explosive events that produced ash clouds as high as 12 km (39,000 ft) above sea level. This eruption also produced a rubbly lava flow and hot avalanche that reached the sea. The most recent minor ash emissions were observed in October 2006.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nchris@usgs.gov, (907)786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJon Dehn, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndehn@gi.alaska.edu (907) 474-6499\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Volcanic unrest at Cleveland Volcano appears to have declined. No significant ash emissions have occurred since July 29. ","sentUtc":"2008-08-06","obs":"avo","vName":"Cleveland","vnum":"311240","noticeId":"DOI-USGS-AVO-2008-08-06T20:16:48-00:00","colorCode":"YELLOW","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2008-08-06T20:16:48-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2008-08-06T20:16:48-00:00","nvewsThreat":"Moderate Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20080803\/0035Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EOkmok  (VNUM #311290)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2008\/A20\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 23 min W 168 deg 9 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E3520 ft (1073 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe episode of strong volcanic tremor at Okmok that peaked at about 4:30 AKDT (12:30 UTC) has declined in intensity. Occasional bursts of tremor, lasting from 2-5 minutes are still occurring but these do not appear to be associated with large ash emissions reaching above 20,000 feet.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSatellite and local observations indicate a lower level dark ash plume and a slightly higher steam plume.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nAlthough it remains possible for ash emissions to extend to 30,000 feet or higher, the overall trend of the seismicity suggests that lower level ash plumes will be more common.  \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nchris@usgs.gov, (907)786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJon Dehn, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndehn@gi.alaska.edu (907) 474-6499\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Strong volcanic tremor at Okmok has declined although intermittent bursts of tremor are occurring intermittently. ","sentUtc":"2008-08-03","obs":"avo","vName":"Okmok","vnum":"311290","noticeId":"DOI-USGS-AVO-2008-08-03T00:35:14-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2008-08-03T00:35:14-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2008-08-03T00:35:14-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20080802\/1342Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EOkmok  (VNUM #311290)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2008\/A19\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 23 min W 168 deg 9 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E3520 ft (1073 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EStrong volcanic tremor has returned to Okmok.  Tremor amplitudes began to climb at around 04:05 AKDT (12:05 UTC) and have remained high since. In the past, tremor of this amplitude usually indicates the potential for strong explosive activity with ash plumes exceeding 30,000 ft ASL.  No satellite data collected since the elevated tremor began are currently available.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EChris Waythomas, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\nchris@usgs.gov, (907)786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJon Dehn, Acting Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\ndehn@gi.alaska.edu (907) 474-6499\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Strong volcanic tremor resumed at Okmok beginning at about 04:05 AKDT (12:05 UTC).","sentUtc":"2008-08-02","obs":"avo","vName":"Okmok","vnum":"311290","noticeId":"DOI-USGS-AVO-2008-08-02T13:42:41-00:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2008-08-02T13:42:41-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2008-08-02T13:42:41-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20080730\/1934Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EOkmok  (VNUM #311290)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2008\/A18\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 23 min W 168 deg 9 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E3520 ft (1073 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESatellite images and recent pilot reports indicate the ash plume at Okmok has decreased to altitudes between 15,000 and 20,000 ft and is moving west from the volcano. Seismicity continues to alternate between periods of continuous and pulsating tremor. The pulses continue to be identified on seismometers on Makushin Volcano on Unalaska Island. Based on these observations AVO is lowering the aviation color code at Okmok volcano to ORANGE and the Alert Code to WATCH.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nStronger explosive activity could resume at any time with little or no warning.\u003Cbr \/\u003E\r\n\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPlease see http:\/\/www.avo.alaska.edu\/activity\/Okmok.php for more information.\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov, (907)786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907)978-5458\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Satellite images and pilot reports indicate the ash plume at Okmok is at altitudes between 15,000 and 20,000 ft. Color CODE is now ORANGE. Alert Code is now WATCH","sentUtc":"2008-07-30","obs":"avo","vName":"Okmok","vnum":"311290","noticeId":"DOI-USGS-AVO-2008-07-30T19:34:51-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2008-07-30T19:34:51-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2008-07-30T19:34:51-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20080729\/0151Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EOkmok  (VNUM #311290)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2008\/A17\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 23 min W 168 deg 9 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E3520 ft (1073 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003ESatellite images indicate ash may have reached 35,000 ft in a plume heading E to SE from the volcano. The intensity and duration of seismicity from the eruption at Okmok has changed from continuous tremor to a pulsating signal over the past 7.0 hours. These pulses are strong enough to be easily identified on seismometers on Makushin Volcano on Unalaska Island.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nStronger explosive activity could resume at any time with little or no warning.\u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPlease see http:\/\/www.avo.alaska.edu\/activity\/Okmok.php for more information.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov, (907)786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907)978-5458\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"Satellite images indicate ash may have reached 35,000 ft in a plume heading E to SE from the volcano.","sentUtc":"2008-07-29","obs":"avo","vName":"Okmok","vnum":"311290","noticeId":"DOI-USGS-AVO-2008-07-29T01:51:58-00:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2008-07-29T01:51:58-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2008-07-29T01:51:58-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20080726\/2001Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EOkmok  (VNUM #311290)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003EORANGE\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            RED                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2008\/A16\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 23 min W 168 deg 9 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E3520 ft (1073 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe amplitude and duration of seismic activity has decreased over the last five hours. Satellite data indicate ash is rising to 20,000 to 22,000 feet. Based on these observations AVO is decreasing the aviation color code at Okmok volcano to ORANGE, and the alert level to WATCH. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPlease see http:\/\/www.avo.alaska.edu\/activity\/Okmok.php for more information.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe nearest settlements are Nikolski, population about 35, roughly 45 miles west of the volcano, and a small number of people at the abandoned Fort Glenn military base 10 miles east of the volcano. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov, (907)786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907)978-5458\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"The intensity and duration of tremor from the eruption at Okmok has decreased over the last five hours.  ","sentUtc":"2008-07-26","obs":"avo","vName":"Okmok","vnum":"311290","noticeId":"DOI-USGS-AVO-2008-07-26T20:01:10-00:00","colorCode":"ORANGE","alertLevel":"WATCH","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2008-07-26T20:01:10-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2008-07-26T20:01:10-00:00","nvewsThreat":"High Threat"},{"noticeHtml":"\u003Cstyle\u003E\n\ttd {\n\t\tpadding: .25em;\n\t}\n\u003C\/style\u003E\n\u003Ctable\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd colspan=\u00222\u0022\u003E\n\t\t\t(1) \u003Cb\u003EVOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)\u003C\/b\u003E\n\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd width=\u0022250\u0022\u003E(2) Issued:\u003C\/td\u003E \n\t\t\u003Ctd valign=\u0022top\u0022\u003E(20080725\/2247Z)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(3) Volcano:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EOkmok  (VNUM #311290)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(4) Current Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cb\u003ERED\u003C\/b\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(5) Previous Color Code:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n                            ORANGE                    \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(6) Source:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\t\t\t\t\tAlaska Volcano Observatory\t\t\t\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(7) Notice Number:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E2008\/A15\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(8) Volcano Location:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EN 53 deg 23 min W 168 deg 9 min\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(9) Area:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\n\t\t\tAleutians\t\t\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(10) Summit Elevation:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E3520 ft (1073 m)\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(11) Volcanic Activity Summary:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003Cspan name=\u0022summary\u0022\u003EThe amplitude of seismic activity has increased in the past hour. Two pilots report ash to 40,000 feet. Satellite data confirm ash to at least 35,000. Based on these observations AVO is increasing the aviation color code at Okmok volcano to RED, and the alert level to WARNING. \u003C\/span\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n    \n        \t\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(12) Volcanic cloud height:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(13) Other volcanic cloud information:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(14) Remarks:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EPlease see http:\/\/www.avo.alaska.edu\/activity\/Okmok.php for more information.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nThe nearest settlements are Nikolski, population about 35, roughly 45 miles west of the volcano, and a small number of people at the abandoned Fort Glenn military base 10 miles east of the volcano. \u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(15) Contacts:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EJohn Power, Acting Scientist-in-Charge, USGS\u003Cbr \/\u003E\r\njpower@usgs.gov, (907)786-7497\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nSteve McNutt, Coordinating Scientist, UAFGI\u003Cbr \/\u003E\r\nsteve@giseis.alaska.edu (907)978-5458\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\t\u003Ctr\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003E(16) Next Notice:\u003C\/td\u003E\n\t\t\u003Ctd valign=\u0022top\u0022\u003EA new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http:\/\/www.avo.alaska.edu\u003C\/td\u003E\n\t\u003C\/tr\u003E\n\u003C\/table\u003E","noticeSynopsis":"The intensity of eruption at Okmok has increased over the last hour.  ","sentUtc":"2008-07-25","obs":"avo","vName":"Okmok","vnum":"311290","noticeId":"DOI-USGS-AVO-2008-07-25T22:47:24-00:00","colorCode":"RED","alertLevel":"WARNING","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2008-07-25T22:47:24-00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2008-07-25T22:47:24-00:00","nvewsThreat":"High Threat"}]