U.S. Geological Survey
Tuesday, May 14, 2024, 11:21 AM AKDT (Tuesday, May 14, 2024, 19:21 UTC)

52°4'35" N 176°6'39" W, Summit Elevation 5709 ft (1740 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

The slow eruption of lava in the summit crater of Great Sitkin Volcano continues. Minor seismic activity was observed over the past day with occasional small earthquakes detected. The active portion of the lava flow remains warm and was snow-free in partly cloudy webcam views.

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.

54°45'19" N 163°58'16" W, Summit Elevation 9373 ft (2857 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW

Unrest at Shishaldin Volcano continues. Elevated seismicity continues with periods of volcanic tremor and earthquake activity observed over the past day. Weak infrasound signals associated with gas bubbles bursting deep within the volcanic crater were also detected. Minor steaming from the summit crater and new minor ashy deposits extending as far as to ~2000 ft (~600 m) downwind were observed in clear satellite and webcam views. These deposits are likely related to wind remobilization of ash off of bare ground at the summit and potential small rockfalls on the steep inner walls of the summit crater. No ash clouds were detected in satellite or webcam views.

The last significant ash-producing eruption occurred in 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. 


Matt Haney, Scientist-in-Charge, USGS (907) 786-7497

David Fee, Coordinating Scientist, UAF (907) 378-5460

The Alaska Volcano Observatory is a cooperative program of the U.S. Geological Survey, the University of Alaska Fairbanks Geophysical Institute, and the Alaska Division of Geological and Geophysical Surveys.

Hazard Notification System (HANS) for Volcanoes at