[{"noticeTitle":"ALASKA VOLCANO OBSERVATORY DAILY UPDATE","noticeHtml":"\u003Cbr\/\u003E\n            \u003Ccenter\u003E\n                \u003Cp class=\u0022text-center\u0022\u003E\n                    \u003Cb\u003EALASKA VOLCANO OBSERVATORY DAILY UPDATE\u003C\/b\u003E\u003Cbr\/\u003E\n                    \u003Cb\u003EU.S. Geological Survey\u003C\/b\u003E\u003Cbr\/\u003E\n            \u003Cb\u003ESaturday, April 11, 2026, 10:29 AM AKDT (Saturday, April 11, 2026, 18:29 UTC)\u003C\/b\u003E\n                \u003C\/p\u003E\n            \u003C\/center\u003E\n            \u003Cbr\/\u003E\n            \u003Cb\u003EGREAT SITKIN\u003C\/b\u003E (VNUM #311120)\u003Cbr\/\u003E52\u00b04'35\u0022 N 176\u00b06'39\u0022 W, Summit Elevation 5709 ft (1740 m)\u003Cbr\/\u003ECurrent Volcano Alert Level: WATCH\u003Cbr\/\u003ECurrent Aviation Color Code: ORANGE\u003Cbr\/\u003E\u003Cbr\/\u003E\u003Cspan name=\u0022summary\u0022\u003E\u003Cp\u003ELava continues to erupt slowly within the summit crater of Great Sitkin Volcano. The volcano was seismically quiet over the past day with very few observed events. Satellite and web camera images were obscured by clouds over the past day.\u003C\/p\u003E\u003Cp\u003EThe current lava eruption began in July 2021 and, since then, has filled most of the summit crater and advanced into valleys below. There have been no explosions at Great Sitkin Volcano since an event in May 2021. The volcano is monitored using local seismic and infrasound sensors, satellite data, webcams, and regional infrasound and lightning networks.\u003C\/p\u003E\u003C\/span\u003E\u003Cbr\/\u003E\u003Cbr\/\u003E\u003Cp\u003ETo view monitoring data and other information about Great Sitkin: \u003Ca href=\u0022https:\/\/avo.alaska.edu\/volcano\/great-sitkin\u0022\u003Ehttps:\/\/avo.alaska.edu\/volcano\/great-sitkin\u003C\/a\u003E\u003C\/p\u003E\u003Cbr\/\u003E\u003Cbr\/\u003E\u003Cb\u003EATKA VOLCANIC COMPLEX\u003C\/b\u003E (VNUM #311160)\u003Cbr\/\u003E52\u00b019'51\u0022 N 174\u00b08'20\u0022 W, Summit Elevation 5030 ft (1533 m)\u003Cbr\/\u003ECurrent Volcano Alert Level: ADVISORY\u003Cbr\/\u003ECurrent Aviation Color Code: YELLOW\u003Cbr\/\u003E\u003Cbr\/\u003E\u003Cspan name=\u0022summary\u0022\u003E\u003Cp\u003ELow-level unrest continues at the Atka volcanic complex characterized by weak seismic tremor. Satellite observations were obscured by clouds over the past day.\u003C\/p\u003E\u003Cp\u003EThe Atka volcanic complex includes several vents, including Korovin Volcano, Mount Kliuchef and Sarichef Volcano. Korovin has been the site of most historical eruptions that typically produce minor amounts of ash and occasional but small lava flows. The Atka volcanic complex is monitored by local seismic and infrasound sensors and webcam, satellite data, and regional lightning detection instruments.\u003C\/p\u003E\u003C\/span\u003E\u003Cbr\/\u003E\u003Cbr\/\u003E\u003Cp\u003ETo view monitoring data and other information about the Atka volcano complex: \u003Ca href=\u0022https:\/\/avo.alaska.edu\/volcano\/atka-volcanic-complex\u0022\u003Ehttps:\/\/avo.alaska.edu\/volcano\/atka-volcanic-complex\u003C\/a\u003E\u003C\/p\u003E\u003Cbr\/\u003E\u003Cbr\/\u003E\u003Cb\u003ESHISHALDIN\u003C\/b\u003E (VNUM #311360)\u003Cbr\/\u003E54\u00b045'19\u0022 N 163\u00b058'16\u0022 W, Summit Elevation 9373 ft (2857 m)\u003Cbr\/\u003ECurrent Volcano Alert Level: ADVISORY\u003Cbr\/\u003ECurrent Aviation Color Code: YELLOW\u003Cbr\/\u003E\u003Cbr\/\u003E\u003Cspan name=\u0022summary\u0022\u003E\u003Cp\u003EUnrest continues at Shishaldin Volcano. Seismic and infrasound activity remains elevated over the past day.  A plume of sulfur dioxide gas was observed in satellite data from yesterday afternoon. Satellite and web camera views of the volcano were mostly obscured by clouds over the past day. \u003C\/p\u003E\u003Cp\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 images to detect eruptions. \u003C\/p\u003E\u003C\/span\u003E\u003Cbr\/\u003E\u003Cbr\/\u003E\u003Cp\u003ETo view monitoring data and other information about Shishaldin: \u003Ca href=\u0022https:\/\/avo.alaska.edu\/volcano\/shishaldin\u0022\u003Ehttps:\/\/avo.alaska.edu\/volcano\/shishaldin\u003C\/a\u003E\u003C\/p\u003E\u003Cbr\/\u003E\u003Cbr\/\u003E               \n                \u003Cbr\/\u003E\u003Cbr\/\u003E\n                \u003Cb\u003ECONTACT INFORMATION:\u003C\/b\u003E\u003Cbr\/\u003E\u003Cbr\/\u003E\n                \u003Cp\u003E\u003Ca href=\u0022javascript:hansJs.addContactToNotice(' + contact.observatory_contact_id + ')\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/a\u003E\u003C\/p\u003E\u003Cp\u003E\u003Ca href=\u0022javascript:hansJs.addContactToNotice(' + contact.observatory_contact_id + ')\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/a\u003E\u003C\/p\u003E\u003Cbr\/\u003E\u003Cbr\/\u003E\u003Cp\u003EContact AVO: \u003Ca href=\u0022https:\/\/avo.alaska.edu\/contact\u0022\u003Ehttps:\/\/avo.alaska.edu\/contact\u003C\/a\u003E\u003C\/p\u003E\u003Cp\u003EThe Alaska Volcano Observatory is a cooperative program of the U.S. Geological Survey, the University of Alaska Fairbanks Geophysical Institute, and the Alaska Division of Geological and Geophysical Surveys.\u003C\/p\u003E","sentUtc":"2026-04-11","obs":"avo","noticeId":"DOI-USGS-AVO-2026-04-11T18:28:03+00:00","noticeUrl":"https:\/\/volcanoes.usgs.gov\/hans2\/view\/notice\/DOI-USGS-AVO-2026-04-11T18:28:03+00:00","noticeData":"https:\/\/volcanoes.usgs.gov\/vsc\/api\/hansApi\/notice\/DOI-USGS-AVO-2026-04-11T18:28:03+00:00","obsAlertLevel":"WATCH","obsColorCode":"ORANGE","noticeHighestAlertLevel":"WATCH","noticeHighestColorCode":"ORANGE","noticeSections":[{"sectionHtml":"\u003Cbr\/\u003E\n            \u003Ccenter\u003E\n                \u003Cp class=\u0022text-center\u0022\u003E\n                    \u003Cb\u003EALASKA VOLCANO OBSERVATORY DAILY UPDATE\u003C\/b\u003E\u003Cbr\/\u003E\n                    \u003Cb\u003EU.S. Geological Survey\u003C\/b\u003E\u003Cbr\/\u003E\n            \u003Cb\u003ESaturday, April 11, 2026, 10:29 AM AKDT (Saturday, April 11, 2026, 18:29 UTC)\u003C\/b\u003E\n                \u003C\/p\u003E\n            \u003C\/center\u003E\n            \u003Cbr\/\u003E\n            \u003Cb\u003EATKA VOLCANIC COMPLEX\u003C\/b\u003E (VNUM #311160)\u003Cbr\/\u003E52\u00b019'51\u0022 N 174\u00b08'20\u0022 W, Summit Elevation 5030 ft (1533 m)\u003Cbr\/\u003ECurrent Volcano Alert Level: ADVISORY\u003Cbr\/\u003ECurrent Aviation Color Code: YELLOW\u003Cbr\/\u003E\u003Cbr\/\u003E\u003Cspan name=\u0022summary\u0022\u003E\u003Cp\u003ELow-level unrest continues at the Atka volcanic complex characterized by weak seismic tremor. Satellite observations were obscured by clouds over the past day.\u003C\/p\u003E\u003Cp\u003EThe Atka volcanic complex includes several vents, including Korovin Volcano, Mount Kliuchef and Sarichef Volcano. Korovin has been the site of most historical eruptions that typically produce minor amounts of ash and occasional but small lava flows. The Atka volcanic complex is monitored by local seismic and infrasound sensors and webcam, satellite data, and regional lightning detection instruments.\u003C\/p\u003E\u003C\/span\u003E\u003Cbr\/\u003E\u003Cbr\/\u003E\u003Cp\u003ETo view monitoring data and other information about the Atka volcano complex: \u003Ca href=\u0022https:\/\/avo.alaska.edu\/volcano\/atka-volcanic-complex\u0022\u003Ehttps:\/\/avo.alaska.edu\/volcano\/atka-volcanic-complex\u003C\/a\u003E\u003C\/p\u003E\u003Cbr\/\u003E\u003Cbr\/\u003E\u003Cbr\/\u003E\u003Cb\u003EThis notice contains volcanoes not displayed here:\u003C\/b\u003E Great Sitkin (WATCH\/ORANGE), Shishaldin (ADVISORY\/YELLOW).\u003Cbr\/\u003E\u003Cbr\/\u003E               \n                \u003Cbr\/\u003E\u003Cbr\/\u003E\n                \u003Cb\u003ECONTACT INFORMATION:\u003C\/b\u003E\u003Cbr\/\u003E\u003Cbr\/\u003E\n                \u003Cp\u003E\u003Ca href=\u0022javascript:hansJs.addContactToNotice(' + contact.observatory_contact_id + ')\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/a\u003E\u003C\/p\u003E\u003Cp\u003E\u003Ca href=\u0022javascript:hansJs.addContactToNotice(' + contact.observatory_contact_id + ')\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/a\u003E\u003C\/p\u003E\u003Cbr\/\u003E\u003Cbr\/\u003E\u003Cp\u003EContact AVO: \u003Ca href=\u0022https:\/\/avo.alaska.edu\/contact\u0022\u003Ehttps:\/\/avo.alaska.edu\/contact\u003C\/a\u003E\u003C\/p\u003E\u003Cp\u003EThe Alaska Volcano Observatory is a cooperative program of the U.S. Geological Survey, the University of Alaska Fairbanks Geophysical Institute, and the Alaska Division of Geological and Geophysical Surveys.\u003C\/p\u003E","summary":"\u003Cp\u003ELow-level unrest continues at the Atka volcanic complex characterized by weak seismic tremor. Satellite observations were obscured by clouds over the past day.\u003C\/p\u003E\u003Cp\u003EThe Atka volcanic complex includes several vents, including Korovin Volcano, Mount Kliuchef and Sarichef Volcano. Korovin has been the site of most historical eruptions that typically produce minor amounts of ash and occasional but small lava flows. The Atka volcanic complex is monitored by local seismic and infrasound sensors and webcam, satellite data, and regional lightning detection instruments.\u003C\/p\u003E","synopsis":"AVO Atka volcanic complex YELLOW\/ADVISORY - Weak seismic activity detected.","alertLevel":"ADVISORY","colorCode":"YELLOW","vName":"Atka volcanic complex","vnum":"311160","lat":52.3309,"lng":-174.139,"vUrl":"https:\/\/avo.alaska.edu\/volcanoes\/volcinfo.php?volcname=Atka","vImage":"","region":"Aleutians","sectionId":"DOI-USGS-AVO-2026-04-11T18:28:03+00:00"},{"sectionHtml":"\u003Cbr\/\u003E\n            \u003Ccenter\u003E\n                \u003Cp class=\u0022text-center\u0022\u003E\n                    \u003Cb\u003EALASKA VOLCANO OBSERVATORY DAILY UPDATE\u003C\/b\u003E\u003Cbr\/\u003E\n                    \u003Cb\u003EU.S. Geological Survey\u003C\/b\u003E\u003Cbr\/\u003E\n            \u003Cb\u003ESaturday, April 11, 2026, 10:29 AM AKDT (Saturday, April 11, 2026, 18:29 UTC)\u003C\/b\u003E\n                \u003C\/p\u003E\n            \u003C\/center\u003E\n            \u003Cbr\/\u003E\n            \u003Cb\u003EGREAT SITKIN\u003C\/b\u003E (VNUM #311120)\u003Cbr\/\u003E52\u00b04'35\u0022 N 176\u00b06'39\u0022 W, Summit Elevation 5709 ft (1740 m)\u003Cbr\/\u003ECurrent Volcano Alert Level: WATCH\u003Cbr\/\u003ECurrent Aviation Color Code: ORANGE\u003Cbr\/\u003E\u003Cbr\/\u003E\u003Cspan name=\u0022summary\u0022\u003E\u003Cp\u003ELava continues to erupt slowly within the summit crater of Great Sitkin Volcano. The volcano was seismically quiet over the past day with very few observed events. Satellite and web camera images were obscured by clouds over the past day.\u003C\/p\u003E\u003Cp\u003EThe current lava eruption began in July 2021 and, since then, has filled most of the summit crater and advanced into valleys below. There have been no explosions at Great Sitkin Volcano since an event in May 2021. The volcano is monitored using local seismic and infrasound sensors, satellite data, webcams, and regional infrasound and lightning networks.\u003C\/p\u003E\u003C\/span\u003E\u003Cbr\/\u003E\u003Cbr\/\u003E\u003Cp\u003ETo view monitoring data and other information about Great Sitkin: \u003Ca href=\u0022https:\/\/avo.alaska.edu\/volcano\/great-sitkin\u0022\u003Ehttps:\/\/avo.alaska.edu\/volcano\/great-sitkin\u003C\/a\u003E\u003C\/p\u003E\u003Cbr\/\u003E\u003Cbr\/\u003E\u003Cbr\/\u003E\u003Cb\u003EThis notice contains volcanoes not displayed here:\u003C\/b\u003E Atka volcanic complex (ADVISORY\/YELLOW), Shishaldin (ADVISORY\/YELLOW).\u003Cbr\/\u003E\u003Cbr\/\u003E               \n                \u003Cbr\/\u003E\u003Cbr\/\u003E\n                \u003Cb\u003ECONTACT INFORMATION:\u003C\/b\u003E\u003Cbr\/\u003E\u003Cbr\/\u003E\n                \u003Cp\u003E\u003Ca href=\u0022javascript:hansJs.addContactToNotice(' + contact.observatory_contact_id + ')\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/a\u003E\u003C\/p\u003E\u003Cp\u003E\u003Ca href=\u0022javascript:hansJs.addContactToNotice(' + contact.observatory_contact_id + ')\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/a\u003E\u003C\/p\u003E\u003Cbr\/\u003E\u003Cbr\/\u003E\u003Cp\u003EContact AVO: \u003Ca href=\u0022https:\/\/avo.alaska.edu\/contact\u0022\u003Ehttps:\/\/avo.alaska.edu\/contact\u003C\/a\u003E\u003C\/p\u003E\u003Cp\u003EThe Alaska Volcano Observatory is a cooperative program of the U.S. Geological Survey, the University of Alaska Fairbanks Geophysical Institute, and the Alaska Division of Geological and Geophysical Surveys.\u003C\/p\u003E","summary":"\u003Cp\u003ELava continues to erupt slowly within the summit crater of Great Sitkin Volcano. The volcano was seismically quiet over the past day with very few observed events. Satellite and web camera images were obscured by clouds over the past day.\u003C\/p\u003E\u003Cp\u003EThe current lava eruption began in July 2021 and, since then, has filled most of the summit crater and advanced into valleys below. There have been no explosions at Great Sitkin Volcano since an event in May 2021. The volcano is monitored using local seismic and infrasound sensors, satellite data, webcams, and regional infrasound and lightning networks.\u003C\/p\u003E","synopsis":"AVO Great Sitkin ORANGE\/WATCH - Slow eruption of lava within the summit crater continues.","alertLevel":"WATCH","colorCode":"ORANGE","vName":"Great Sitkin","vnum":"311120","lat":52.0765,"lng":-176.1109,"vUrl":"https:\/\/www.avo.alaska.edu\/activity\/GreatSitkin.php","vImage":"https:\/\/avo.alaska.edu\/images\/dbimages\/display\/1102983616_16_3.jpg","region":"Aleutians","sectionId":"DOI-USGS-AVO-2026-04-11T18:28:04+00:00"},{"sectionHtml":"\u003Cbr\/\u003E\n            \u003Ccenter\u003E\n                \u003Cp class=\u0022text-center\u0022\u003E\n                    \u003Cb\u003EALASKA VOLCANO OBSERVATORY DAILY UPDATE\u003C\/b\u003E\u003Cbr\/\u003E\n                    \u003Cb\u003EU.S. Geological Survey\u003C\/b\u003E\u003Cbr\/\u003E\n            \u003Cb\u003ESaturday, April 11, 2026, 10:29 AM AKDT (Saturday, April 11, 2026, 18:29 UTC)\u003C\/b\u003E\n                \u003C\/p\u003E\n            \u003C\/center\u003E\n            \u003Cbr\/\u003E\n            \u003Cb\u003ESHISHALDIN\u003C\/b\u003E (VNUM #311360)\u003Cbr\/\u003E54\u00b045'19\u0022 N 163\u00b058'16\u0022 W, Summit Elevation 9373 ft (2857 m)\u003Cbr\/\u003ECurrent Volcano Alert Level: ADVISORY\u003Cbr\/\u003ECurrent Aviation Color Code: YELLOW\u003Cbr\/\u003E\u003Cbr\/\u003E\u003Cspan name=\u0022summary\u0022\u003E\u003Cp\u003EUnrest continues at Shishaldin Volcano. Seismic and infrasound activity remains elevated over the past day.  A plume of sulfur dioxide gas was observed in satellite data from yesterday afternoon. Satellite and web camera views of the volcano were mostly obscured by clouds over the past day. \u003C\/p\u003E\u003Cp\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 images to detect eruptions. \u003C\/p\u003E\u003C\/span\u003E\u003Cbr\/\u003E\u003Cbr\/\u003E\u003Cp\u003ETo view monitoring data and other information about Shishaldin: \u003Ca href=\u0022https:\/\/avo.alaska.edu\/volcano\/shishaldin\u0022\u003Ehttps:\/\/avo.alaska.edu\/volcano\/shishaldin\u003C\/a\u003E\u003C\/p\u003E\u003Cbr\/\u003E\u003Cbr\/\u003E\u003Cbr\/\u003E\u003Cb\u003EThis notice contains volcanoes not displayed here:\u003C\/b\u003E Great Sitkin (WATCH\/ORANGE), Atka volcanic complex (ADVISORY\/YELLOW).\u003Cbr\/\u003E\u003Cbr\/\u003E               \n                \u003Cbr\/\u003E\u003Cbr\/\u003E\n                \u003Cb\u003ECONTACT INFORMATION:\u003C\/b\u003E\u003Cbr\/\u003E\u003Cbr\/\u003E\n                \u003Cp\u003E\u003Ca href=\u0022javascript:hansJs.addContactToNotice(' + contact.observatory_contact_id + ')\u0022\u003EMatt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497\u003C\/a\u003E\u003C\/p\u003E\u003Cp\u003E\u003Ca href=\u0022javascript:hansJs.addContactToNotice(' + contact.observatory_contact_id + ')\u0022\u003EDavid Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460\u003C\/a\u003E\u003C\/p\u003E\u003Cbr\/\u003E\u003Cbr\/\u003E\u003Cp\u003EContact AVO: \u003Ca href=\u0022https:\/\/avo.alaska.edu\/contact\u0022\u003Ehttps:\/\/avo.alaska.edu\/contact\u003C\/a\u003E\u003C\/p\u003E\u003Cp\u003EThe Alaska Volcano Observatory is a cooperative program of the U.S. Geological Survey, the University of Alaska Fairbanks Geophysical Institute, and the Alaska Division of Geological and Geophysical Surveys.\u003C\/p\u003E","summary":"\u003Cp\u003EUnrest continues at Shishaldin Volcano. Seismic and infrasound activity remains elevated over the past day.  A plume of sulfur dioxide gas was observed in satellite data from yesterday afternoon. Satellite and web camera views of the volcano were mostly obscured by clouds over the past day. \u003C\/p\u003E\u003Cp\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 images to detect eruptions. \u003C\/p\u003E","synopsis":"AVO Shishaldin YELLOW\/ADVISORY - Low-level unrest continues, with infrasound, and tremor observed. A plume of sulfur dioxide was observed in satellite data.","alertLevel":"ADVISORY","colorCode":"YELLOW","vName":"Shishaldin","vnum":"311360","lat":54.7554,"lng":-163.9711,"vUrl":"https:\/\/avo.alaska.edu\/activity\/Shishaldin.php","vImage":"https:\/\/avo.alaska.edu\/images\/dbimages\/display\/1108075524_30_3.jpg","region":"Aleutians","sectionId":"DOI-USGS-AVO-2026-04-11T18:28:05+00:00"}]}]