Alaska Volcano Observatory

Lava continues to erupt slowly within the summit crater of Great Sitkin Volcano. A few local seismic events occurred over the past day, otherwise the volcano was quiet. Satellite and web camera views were all obscured by clouds. 

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.

Shishaldin Volcano continues to experience unrest. Over the past day, there has been slightly elevated seismic activity, including numerous small earthquakes and volcanic tremor. A plume of mostly water vapor (steam) was observed in clear web camera views over the past day. Satellite imagery captured over the past day has shown no significant changes or noteworthy features in clear to partly cloudy conditions.

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 lightning data, and satellite images to detect eruptions.