Alaska Volcano Observatory

Slow eruption of lava continues. Minor seismicity was detected over the past day. Weakly elevated surface temperatures were observed in satellite data. A clear web camera view of the summit showed no significant changes in the current activity.   

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

Occasional earthquakes continued over the past day. No activity was observed in mostly cloudy satellite views of the volcano but sulfur dioxide gas emissions were detected in satellite data. 

There is no real-time geophysical monitoring network at Mount Kupreanof. The closest functioning seismometers are approximately 17 miles (27 km) to the east of the volcano as part of the Mount Veniaminof network. Mount Kupreanof is also monitored by satellite data, remote infrasound and lightning networks, and visual observations from pilots and mariners passing by the volcano. 

Unrest continues. Minor seismic activity and infrasound were detected at the volcano. Cloudy weather obscured the volcano in satellite and web camera views from the past day. Sulfur dioxide gas emissions were observed in satellite data.  

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.