Printer friendly versionAVO/USGS Volcanic Activity Notice
Current Volcano Alert Level: ADVISORY
Previous Volcano Alert Level: WATCH
Current Aviation Color Code: YELLOW
Previous Aviation Color Code: ORANGE
Friday, February 9, 2018, 1:44 PM AKST
Alaska Volcano Observatory
N 52 deg 49 min W 169 deg 56 min
5676 ft (1730 m)
Volcanic Activity Summary: The last detected explosive activity at Cleveland Volcano was on December 18, 2017. There is no evidence of significant activity since that time. Thus, AVO is reducing the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY. Future explosive activity is likely, and would occur without warning. Previous explosions have produced hazardous conditions primarily near the summit crater, but occasionally they have been large enough to produce a drifting ash cloud.
Cleveland Volcano is not monitored with a full real-time seismic network and this inhibits AVO's ability to detect unrest that may lead to future activity. We are able to detect explosive activity using infrasound and limited seismic instruments on the island.
[Volcanic cloud height] None
[Other volcanic cloud information] n/a
Michelle Coombs, Scientist-in-Charge, USGS
email@example.com (907) 786-7497
Pavel Izbekov, Acting Coordinating Scientist, UAFGI
firstname.lastname@example.org (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.