USGS Volcano Notice - DOI-USGS-AVO-2024-02-01T20:39:59+00:00

Slow eruption of lava in the summit crater of Great Sitkin Volcano continues.

Infrequent, small volcanic earthquakes were detected over the past day. Satellite and web camera images were cloudy. 

The current lava flow began erupting in July 2021. No explosive events have occurred since a single event in May 2021.

Local seismic and infrasound sensors and web cameras are used to monitor Great Sitkin along with regional infrasound and lightning networks and satellite data.

Low-level unrest continues at Shishaldin Volcano in the form of small repeating volcanic earthquakes and small explosions as detected by infrasound. These explosions are restricted to the summit crater and are not producing ash emissions. Satellite and webcam views were mostly obscured by clouds over the past day; nothing unusual was observed. 

No eruptive activity has been observed since November 2023. 

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. These mo

Occasional volcanic earthquakes were detected over the past day. Satellite and web camera images were cloudy.

A steam-driven explosion occurred at Kanaga on December 18, and seismic activity at the volcano has been above background. This unrest may mean that the likelihood for ash-producing explosive activity has increased.

Local seismic and infrasound sensors and web cameras are used to monitor Kanaga. AVO also uses regional infrasound and lightning networks as well as satellite data.