ALASKA VOLCANO OBSERVATORY DAILY UPDATE
U.S. Geological Survey
Tuesday, May 10, 2022, 11:35 AM AKDT (Tuesday, May 10, 2022, 19:35 UTC)
No significant seismic activity was detected over the last day. Elevated surface temperatures were observed in satellite views which is consistent with continued lava effusion. It is possible that new explosive activity could occur with little or no warning.
Great Sitkin is monitored by local seismic and infrasound sensors, satellite data, web cameras, and remote infrasound and lightning networks.
Unrest continues at Pavlof. Seismic tremor continues but no explosions or ash emissions were detected over the past day. Elevated surface temperatures were observed in satellite views and the lava flow issuing from the east vent extends approximalty 1640 ft (0.5 km) downslope as of May 8.
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 can change quickly and the progression to more significant eruptive activity can occur with little or no warning.
Pavlof is monitored by local seismic and infrasound sensors, satellite data, web cameras, and remote infrasound and lightning networks.
Low-level eruptive activity continues. Seismicity remains elevated with intermittent tremor. Several explosions were detected in seismic and infrasound data over the past day. Clear satellite and web camera images showed low-level ash emissions.
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. Small explosions and associated ash emissions may continue and could be difficult to detect, especially when thick cloud cover obscures the volcano.
Semisopochnoi is monitored by local seismic and infrasound sensors, satellite data, web cameras, and remote infrasound and lightning networks.
OTHER ALASKA VOLCANOES
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Michelle Coombs, Scientist-in-Charge, USGS mcoombs@usgs.gov (907) 786-7497
Tarsilo Girona, Acting Coordinating Scientist, UAFGI, tarsilo.girona@alaska.edu, (907) 322-4085
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