Alaska Volcano Observatory

Lava continues to erupt slowly within the summit crater of Great Sitkin Volcano. Clouds obscured views of the volcano in satellite and webcam images. Little earthquake activity was detected. 

The current lava eruption began in July 2021 and since then has 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 and webcams, and regional infrasound and lightning networks.

No significant earthquake activity was detected over the last day. Satellite and webcam images showed no evidence for surface changes or activity.

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

Shishaldin Volcano continues to experience unrest with numerous small earthquakes detected over the past day. Clouds obscured webcam and satellite images. No surface changes were seen in the summit crater in a new satellite radar image. 

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 lighting data, and satellite images to detect eruptions.