Recent Volcano Updates from the U.S. Geological Survey Volcano Hazards Program https://volcanoes.usgs.gov U.S. Geological Survey Volcano Hazards Program Mon, 10 Feb 2025 21:50:28 +0000 Feb 10, 2025 21:47 - Lava continues to erupt slowly in the summit crater of Great Sitkin Volcano. Seismicity has been quiet over the past day. Clouds blocked views of the volcano in web camera and satellite images.The current eruption of Great Sitkin Volcano began with a single explosive event in May 2021. The ongoing eruption of lava at the summit began shortly afterward, in July 2021. The volcano is monitored using local seismic and infrasound sensors, satellite data and web cameras, and regional infrasound and lightning networks. https://www.usgs.gov/programs/VHP/volcano-updates#avo DOI-USGS-AVO-2025-02-10T21:36:54+00:00 52.0765 -176.1109 WATCH ORANGE Feb 10, 2025 21:47 - Unrest continues at Mount Spurr, with numerous small, shallow volcanic earthquakes detected beneath the volcano over the past day. Currently, the earthquakes are being located under the Crater Peak vent as well as under the summit of Mount Spurr. Clear views of the volcano showed no unusual activity over the past day. Airborne gas measurements from the Spurr summit and the Crater Peak vent collected on Friday February 7, show no significant changes in gas output from the volcano. Sulfur dioxide and carbon dioxide gas are similar to background levels measured in previous ... https://www.usgs.gov/programs/VHP/volcano-updates#avo DOI-USGS-AVO-2025-02-10T21:36:55+00:00 61.2989 -152.2539 ADVISORY YELLOW Feb 10, 2025 19:34 - Activity Summary:  Kīlauea summit eruption paused as of February 4. A new eruptive episode may begin within the next 3 days in Hawai'i Volcanoes National Park.Episode 8 of the ongoing Halemaʻumaʻu eruption ended abruptly at 7:23 p.m. HST on February 4 after about 21.5 hours of eruptive activity. Kīlauea's current eruption in Halemaʻumaʻu crater within Kaluapele (the summit caldera) began on December 23, 2024. There have been 8 episodes of lava fountaining separated by pauses in activity. All eruptive activity remains within Hawai'i Volcanoes National Park. No ... https://www.usgs.gov/programs/VHP/volcano-updates#hvo DOI-USGS-HVO-2025-02-10T18:07:06+00:00 19.421 -155.287 WATCH ORANGE Feb 7, 2025 20:49 - Activity Update: All volcanoes in the Cascade Range of Oregon and Washington are at normal background activity levels. These include Mount Baker, Glacier Peak, Mount Rainier, Mount St. Helens, and Mount Adams in Washington State and Mount Hood, Mount Jefferson, Three Sisters, Newberry, and Crater Lake in Oregon.Past Week Observations: During the past week, small earthquakes were detected at Mount Rainier, Mount St. Helens, and Mount Hood. All monitoring data are consistent with background activity levels in the Cascade Range. Field crews performed station maintenance at ... https://www.usgs.gov/programs/VHP/volcano-updates#cvo DOI-USGS-CVO-2025-02-07T20:46:39+00:00 45.61 -122.5 NORMAL GREEN Feb 6, 2025 22:04 - Unrest at Ahyi Seamount continues. Minor activity from the direction of Ahyi was detected in hydroacoustic array data at Wake Island on February 3 and 5. A satellite image showed a plume of discolored water in the vicinity of Ahyi on February 1, indicating possible submarine activity. Similar, weak activity at Ahyi Seamount has been observed in satellite imagery off and on extending back to August 5, 2024. There are no local monitoring stations near Ahyi seamount, which limits our ability to detect and characterize volcanic unrest there. We will continue to monitor ... https://www.usgs.gov/programs/VHP/volcano-updates#nmi DOI-USGS-NMI-2025-02-06T20:14:32+00:00 20.42 145.03 ADVISORY YELLOW Feb 6, 2025 21:18 - No significant activity was detected at Ofu-Olosega Volcano during the past month. The USGS National Earthquake Information Center reported no earthquakes of magnitude 2.5 or greater in the vicinity of the volcano. https://www.usgs.gov/programs/VHP/volcano-updates#hvo DOI-USGS-HVO-2025-02-06T21:16:03+00:00 -14.175 -169.618 NORMAL GREEN Feb 6, 2025 21:18 - No significant activity was detected at Taʻū Volcano during the past month. The USGS National Earthquake Information Center reported no earthquakes of magnitude 2.5 or greater in the vicinity of the volcano. Global Positioning System (GPS) instrument on Taʻū Island recorded no significant vertical deformation. https://www.usgs.gov/programs/VHP/volcano-updates#hvo DOI-USGS-HVO-2025-02-06T21:16:04+00:00 -14.23 -169.454 NORMAL GREEN Feb 6, 2025 21:18 - No significant activity was detected at Tutuila Volcano during the past month. The USGS National Earthquake Information Center reported no earthquakes of magnitude 2.5 or greater in the vicinity of the volcano. https://www.usgs.gov/programs/VHP/volcano-updates#hvo DOI-USGS-HVO-2025-02-06T21:16:05+00:00 -14.295 -170.7 NORMAL GREEN Feb 6, 2025 20:52 - Seismicity beneath Mauna Loa's summit and upper-elevation flanks has been low over the past month; approximately 65 small-magnitude earthquakes (most below M1.5) were detected, which is expected for the post-eruption phase of this volcano and similar to the previous month.Data from Global Positioning System (GPS) instruments on Mauna Loa showed only continued minor inflation near the summit as the volcano recovers from the 2022 eruption and magma replenishes the reservoir system. Gas and temperature data from a station on Mauna Loa's Southwest Rift Zone show that H2S ... https://www.usgs.gov/programs/VHP/volcano-updates#hvo DOI-USGS-HVO-2025-02-06T20:25:48+00:00 19.475 -155.608 NORMAL GREEN Feb 6, 2025 20:52 - Seismicity has been low at Kamaʻehuakanaloa volcano (formerly Lōʻihi Seamount) over the past several months. There have been about 28 earthquakes in the past month, which is representative of background activity at the volcano; all earthquakes were of small magnitudes (below M3.0). https://www.usgs.gov/programs/VHP/volcano-updates#hvo DOI-USGS-HVO-2025-02-06T20:25:53+00:00 18.92 -155.27 UNASSIGNED UNASSIGNED Feb 6, 2025 20:52 - No significant activity was detected at Hualālai volcano during the past month. Seismic activity remained low, and was representative of background activity levels at the volcano; earthquakes were of small magnitudes (below M1.5). The continuously recording Global Positioning System (GPS) instrument on Hualālai recorded no significant deformation in the past month. https://www.usgs.gov/programs/VHP/volcano-updates#hvo DOI-USGS-HVO-2025-02-06T20:25:49+00:00 19.692 -155.87 NORMAL GREEN Feb 6, 2025 20:52 - No significant activity was detected at Haleakalā volcano during the past month. Seismic activity remained low, and was representative of background activity levels at the volcano. The continuously recording Global Positioning System (GPS) instrument on Haleakalā shows no significant changes. https://www.usgs.gov/programs/VHP/volcano-updates#hvo DOI-USGS-HVO-2025-02-06T20:25:50+00:00 20.708 -156.25 NORMAL GREEN Feb 6, 2025 20:52 - No significant activity was detected at Mauna Kea volcano during the past month. Seismic activity was at background levels at the volcano. The continuously recording Global Positioning System (GPS) instrument on Mauna Kea (MKPM, operated by NASA’s Jet Propulsion Laboratory) showed no change. https://www.usgs.gov/programs/VHP/volcano-updates#hvo DOI-USGS-HVO-2025-02-06T20:25:52+00:00 19.82 -155.47 NORMAL GREEN Feb 4, 2025 17:48 - Monitored CALIFORNIA VOLCANOESCurrent Volcano Alert Level: all NORMALCurrent Aviation Color Code: all GREENActivity Update: All volcanoes monitored by CalVO show normal background earthquake activity and ground movement. Monitored volcanoes include Mount Shasta, Medicine Lake Volcano, Lassen Volcanic Center, Clear Lake Volcanic Field, Long Valley Volcanic Region, Coso Volcanic Field, Ubehebe Craters, and Salton Buttes.Past Week Observations for January 27 (0000h PST) to February 02 (2359h PST):Typical seismicity was recorded at The Geysers geothermal field south of the ... https://www.usgs.gov/programs/VHP/volcano-updates#calvo DOI-USGS-CALVO-2025-02-04T17:13:37+00:00 37.4553648752025 -122.17073209917 NORMAL GREEN Feb 1, 2025 12:06 - SummaryYellowstone Caldera activity remains at background levels, with 56 located earthquakes in January (maximum = M3.7). Deformation measurements indicate a small amount of caldera subsidence since early October. Recent Work and NewsMinor eruptions at Steamboat Geyser continued throughout January, indicating the possibility of the geyser's first major eruption of the year in the coming days to weeks. SeismicityDuring January 2025, the University of Utah Seismograph Stations, responsible for the operation and analysis of the Yellowstone Seismic Network, located 56 ... https://www.usgs.gov/programs/VHP/volcano-updates#yvo DOI-USGS-YVO-2025-02-01T12:03:18+00:00 44.43 -110.67 NORMAL GREEN Jan 30, 2025 03:31 - Strong northwesterly winds in the vicinity of Katmai and the Valley of Ten Thousand Smokes have picked up loose volcanic ash erupted during the 1912 Novarupta-Katmai eruption and are carrying it to the southeast. The National Weather Service has issued a SIGMET for this low-level event and suggests that the maximum cloud height is 4,000 ft (1.2 km) above sea level.This phenomenon is not the result of recent volcanic activity and occurs during times of high winds and dry snow-free conditions in the Katmai area and other young volcanic areas of Alaska. No eruption is in ... https://www.usgs.gov/programs/VHP/volcano-updates#avo DOI-USGS-AVO-2025-01-30T03:28:30+00:00 58.279 -154.9533 NORMAL GREEN Jan 29, 2025 02:01 - The 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.Because this ... https://www.usgs.gov/programs/VHP/volcano-updates#avo DOI-USGS-AVO-2025-01-29T01:24:15+00:00 53.397 -168.166 UNASSIGNED UNASSIGNED