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, but the volcano was mostly quiet. Web camera and satellite views were obscured by clouds over the past day. 

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, webcams, and regional infrasound and lightning networks.

Shishaldin Volcano continues to experience unrest. Over the past day, seismic activity has been slightly elevated, with numerous small earthquakes, volcanic tremor, and infrasound detections.  Webcam views of the volcano showed steaming at the summit when conditions were clear.  Satellite imagery from the past day showed slightly elevated surface temperatures, probably associated with hot gas emissions in the crater. 

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.