USGS Volcano Notice - DOI-USGS-AVO-2024-09-19T20:06:06+00:00

ALASKA VOLCANO OBSERVATORY DAILY UPDATE
U.S. Geological Survey
Thursday, September 19, 2024, 12:18 PM AKDT (Thursday, September 19, 2024, 20:18 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

Lava continues to erupt slowly at Great Sitkin Volcano. Ongoing activity is adding to a thick lava flow that fills most of the summit crater. The local seismic network continues to detect small earthquakes and other signals associated with the ongoing lava eruption. Satellite and web camera views were clear this morning, but have since become obscured by clouds and fog. Slightly elevated surface temperatures were observed early this morning; nothing noteworthy was observed in web camera views.

A single explosive event occurred in May 2021 and was followed by the ongoing eruption of lava that began in July 2021. No explosive events have occurred since 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.



CONTACT INFORMATION:

Hannah Dietterich, Acting Scientist-in-Charge, USGS hdietterich@usgs.gov (907) 786-7497

Pavel Izbekov, Acting Coordinating Scientist, UAFGI peizbekov@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.