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USGS Volcano Notice - DOI-USGS-AVO-2024-03-24T20:04:29+00:00
ALASKA VOLCANO OBSERVATORY DAILY UPDATE
U.S. Geological Survey
Sunday, March 24, 2024, 12:15 PM AKDT (Sunday, March 24, 2024, 20:15 UTC)
GREAT SITKIN (VNUM #311120)
52°4'35" N 176°6'39" W, Summit Elevation 5709 ft (1740 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE
Slow eruption of lava in the summit crater of Great Sitkin Volcano continues. Seismicity was low over the past day with a few small earthquakes detected. Nothing was observed in cloud-obscured views of the volcano over the past day.
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.
SHISHALDIN (VNUM #311360)
54°45'19" N 163°58'16" W, Summit Elevation 9373 ft (2857 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW
Low-level unrest continues at Shishaldin Volcano. Small explosions within the conduit have been producing minor but detectable infrasound signals over the past day. Clouds obscured views of the volcano in webcam imagery. Clear satellite views of the volcano summit over the past day showed nothing noteworthy
No significant 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.
CONTACT INFORMATION:
Matt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497
David Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (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.