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ALASKA VOLCANO OBSERVATORY DAILY UPDATE
U.S. Geological Survey
Monday, March 5, 2018, 1:54 PM AKST (Monday, March 5, 2018, 22:54 UTC)
52°49'20" N 169°56'42" W,
Summit Elevation 5676 ft (1730 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW
The Aviation Color Code and Volcano Alert Level were decreased to YELLOW/ADVISORY at Cleveland Volcano earlier today. The last detected explosive activity was on March 2, 2018, and low-level unrest continues. Satellite observations from earlier today show that the explosion on March 2 deepened the summit crater and ejected rocks onto the upper flanks of the volcano. Elevated surface temperatures from the emission of hot gases (rather than lava effusion) were observed in thermal satellite data. No significant activity was observed in seismic or infrasound data over the last 24 hours.
Cleveland volcano is monitored with a limited real-time seismic network, which inhibits AVO's ability to detect precursory unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data.
OTHER ALASKA VOLCANOES
Information on all Alaska volcanoes is available at : http://www.avo.alaska.edu.
For definitions of Aviation Color Codes and Volcano Alert Levels, see: http://www.avo.alaska.edu/color_codes.php
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Michelle Coombs, Scientist-in-Charge, USGS
firstname.lastname@example.org (907) 786-7497
Pavel Izbekov, Acting Coordinating Scientist, UAFGI
email@example.com (907) 322-4085
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.