Printer friendly versionAVO/USGS Volcanic Activity Notice
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE
Monday, September 25, 2017, 6:15 PM AKDT
Alaska Volcano Observatory
N 52 deg 49 min W 169 deg 56 min
5676 ft (1730 m)
Volcanic Activity Summary: A moderate, 2-minute-long eruption occurred at Cleveland Volcano beginning at 17:47 September 25 AKDT (01:47 September 26 UTC). The explosion was detected by seismic and infrasound (air pressure) sensors. Nothing has been observed in satellite data so far. We are keeping the Aviation Color Code/Alert Level at ORANGE/WATCH.
[Volcanic cloud height] Unknown
[Other volcanic cloud information] Unknown
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.
Michelle Coombs, Scientist-in-Charge, USGS
firstname.lastname@example.org (907) 786-7497
Jeff Freymueller, 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.