usgs.gov: https://volcanoes.usgs.gov/hans-public/notice/DOI-USGS-AVO-2026-05-23T17:58:17+00:00

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USGS Volcano Notice - DOI-USGS-AVO-2026-05-23T17:58:17+00:00 Search Search Hazard Notification System (HANS) for Volcanoes Home | VONAs | Volcano Notice Search | Resources USGS Volcano Notice - DOI-USGS-AVO-2026-05-23T17:58:17+00:00 Back ALASKA VOLCANO OBSERVATORY DAILY UPDATE U.S. Geological Survey Saturday, May 23, 2026, 10:03 AM AKDT (Saturday, May 23, 2026, 18:03 UTC) GREAT SITKIN (VNUM #311120) 52°4'35" N 176°6'39" W, Summit Elevation 5709 ft (1740 m) Current Volcano Alert Level: WATCH Current Aviation Color Code: ORANGE Summary: Slow eruption of lava within the summit crater continues. Small earthquakes associated with lava dome growth and rockfalls were detected in seismic data. Overnight satellite images indicated slightly elevated surface temperatures, consistent with slow lava advance. Webcam images of the volcano were obscured by clouds. The current eruption began in July 2021 and, since then, lava flows have 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. To view monitoring data and other information about Great Sitkin Volcano: https://avo.alaska.edu/volcano/great-sitkin SHISHALDIN (VNUM #311360) 54°45'19" N 163°58'16" W, Summit Elevation 9373 ft (2857 m) Current Volcano Alert Level: ADVISORY Current Aviation Color Code: YELLOW Summary: Ongoing unrest detected with seismic and infrasound events, minor gas emissions. Seismic and infrasound sensors continue to detect frequent small events. Steam emissions were visible in clear webcam images, and sulfur dioxide was detected in satellite images drifting east from the volcano. Local 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. To view monitoring data and other information about Shishaldin Volcano: https://avo.alaska.edu/volcano/shishaldin KUPREANOF (VNUM #312060) 56°45" N 159°47'28" W, Summit Elevation 6217 ft (1895 m) Current Volcano Alert Level: ADVISORY Current Aviation Color Code: YELLOW Summary: Unrest continues with earthquakes detected. A few small earthquakes were detected with regional seismic stations over the last day. Satellite images were obscured by clouds. There is no real-time geophysical monitoring network at Mount Kupreanof. The closest functioning seismometers are approximately 17 miles (27 km) to the east of the volcano as part of the Mount Veniaminof network. Mount Kupreanof is also monitored by satellite data, remote infrasound and lightning networks, and visual observations from pilots and mariners passing by the volcano. To view monitoring data and other information about Mount Kupreanof: https://avo.alas

• youralaskalink.com: https://www.youralaskalink.com/news/local/scientists-raise-alert-level-at-alaska-s-mount-kupreanof/article_0a526357-b5fd-422b-930e-21baa8be0c6e.html 2026-05-22
• missionlocal.org: https://missionlocal.org/2026/05/meet-the-school-board-candidates-mississippi-miracle/ 2026-05-22