USGS Volcano Notice - DOI-USGS-AVO-2024-01-21T21:14:56+00:00

Slow eruption of lava in the summit crater of Great Sitkin Volcano continues as seen in high-resolution satellite imagery collected over the past few days. No notable observations were made in partly cloudy satellite images over the last day, and local monitoring instruments remain temporarily offline due to a storm-related power failure.

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, when available. We are currently using regional infrasound and lightning networks as well as satellite data.

Unrest continues at Shishaldin Volcano in the form of small volcanic earthquakes. No explosive activity was detected in infrasound data. No unusual activity was observed in mostly cloudy satellite and webcam views.

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

No activity was observed in partly cloudy satellite images over the last day. Local monitoring data remain temporarily offline due to a storm-related power failure.

A steam-driven explosion occurred at Kanaga on December 18, and the local network recorded small volcanic earthquakes before going offline on January 2. This unrest may mean that the likelihood for ash-producing explosive activity has increased. Ash clouds exceeding 20,000 feet above sea level may develop with little warning. 

Local seismic and infrasound sensors and web cameras are used to monitor Great Sitkin, when available. We are currently using regional infrasound and lightning networks as well as satellite data.