ALASKA VOLCANO OBSERVATORY DAILY UPDATE
U.S. Geological Survey
Thursday, January 5, 2023, 1:22 PM AKST (Thursday, January 5, 2023, 22:22 UTC)
Low-level explosive activity was detected in geophysical data over the past day, with elevated seismicity and infrasound signals observed on local stations. Minor steam emissions were seen in clear web camera views during the last 24 hours. Satellite images were partly cloudy and no significant plumes were observed.
Small 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.
Semisopochnoi volcano is monitored by local seismic and infrasound sensors, satellite data, web cameras, and regional infrasound and lightning networks.
Lava likely continued to erupt in the summit crater of Great Sitkin Volcano over the past day. Nothing significant was observed in clear to mostly cloudy satellite images. Web camera views were clear at times but nothing of note was seen. Seismicity at Great Sitkin was overall low during the last 24 hours.
Great Sitkin Volcano is monitored by local seismic and infrasound sensors, satellite data, web cameras, and regional infrasound and lightning networks.
No eruptive activity observed. Weakly elevated surface temperatures were observed once in clear to partly cloudy satellite images over the past day. Web camera views were clear but showed nothing of note. Occasional small low frequency events were detected in seismic data during the last 24 hours.
Small explosions associated with the current eruption could happen at any time and may be accompanied by small ash plumes within the immediate vicinity of the volcano. The level of unrest at Pavlof Volcano can change quickly and the progression to more significant eruptive activity can occur with little or no warning.
Pavlof Volcano is monitored by local seismic and infrasound sensors, satellite data, web cameras, and regional infrasound and lightning networks.
The ongoing swarm near Takawangha volcano continued over the past day. This activity may be due to the movement of magma beneath the volcano. No other signs of unrest were observed in partly cloudy to cloudy satellite images.
OTHER ALASKA VOLCANOES
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Michelle Coombs, Scientist-in-Charge, USGS, email@example.com, (907) 786-7497
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