USGS Volcano Notice - DOI-USGS-AVO-2023-01-12T12:48:03-08:00

Seismic activity is elevated at Semisopochnoi Volcano, with weak tremor and occasional small earthquakes. Satellite and webcam views were obscured by clouds.

Small eruptions producing minor ash deposits within the vicinity of the active north crater of Mount Young (formerly known as Mount Cerberus) 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.

Only a few small local earthquakes were detected at Great Sitkin Volcano over the past 24 hours. Satelllite and webcam views of the volcano were obscured by clouds. Lava likely continues to erupt in the volcano's summit crater.

Great Sitkin Volcano is monitored by local seismic and infrasound sensors, satellite data, web cameras, and regional infrasound and lightning networks.

No eruptive activity was observed at Pavlof Volcano over the past day in clear satellite and webcam views. Only a few small local earthquakes were detected 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, with tremor and small earthquakes detected. This activity may be due to the movement of magma beneath the volcano. Satellite views of the volcano were obscured by clouds.