ALASKA VOLCANO OBSERVATORY DAILY UPDATE
U.S. Geological Survey
Monday, February 20, 2023, 11:25 AM AKST (Monday, February 20, 2023, 20:25 UTC)
Weakly elevated surface temperatures were observed in overnight satellite imagery consistent with continued eruption of lava within the summit crater. No significant activity was observed in geophysical monitoring data or partly cloudy web camera views over the past day.
Great Sitkin Volcano is monitored by local seismic and infrasound sensors, satellite data, web cameras, and regional infrasound and lightning networks.
No unusual activity was observed in seismic, infrasound, or satellite data over the past day. Steaming from the north crater of Mount Young was observed in clear web camera views.
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 have characterized the recent activity. Additional ash-producing events could occur again with little warning.
Semisopochnoi volcano is monitored by local seismic and infrasound sensors, satellite data, web cameras, and regional infrasound and lightning networks.
Seismicity remains elevated with small earthquakes detected over the past 24 hours. No signs of unrest were observed in partly cloudy satellite views of the volcano.
Takawangha volcano is monitored by local seismic and infrasound sensors, satellite data, and regional infrasound and lightning networks.
OTHER ALASKA VOLCANOES
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Michelle Coombs, Scientist-in-Charge, USGS email@example.com (907) 786-7497
Társilo Girona, Acting Coordinating Scientist, UAFGI firstname.lastname@example.org (907) 322-4085
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