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
Monday, June 26, 2017, 12:06 PM AKDT
Alaska Volcano Observatory
N 52 deg 49 min W 169 deg 56 min
5676 ft (1730 m)
Volcanic Activity Summary: Recent observations of Cleveland Volcano suggest that unrest has declined and it is unlikely that eruptive activity is continuing. Satellite observations have yielded no evidence for continuing lava effusion and there have been no detections of anomalous seismicity or infrasound from the volcano since a brief explosion on Tuesday evening (May 16) at 19:17 AKDT (03:17 May 17 UTC). Evidence for lava effusion in the summit crater was observed in satellite data on June 7, but since then observed surface temperatures have become weaker, suggesting that lava effusion has paused or ended.
The overall decline in unrest and lack of evidence for lava effusion warrants downgrading the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.
[Volcanic cloud height] N/A
[Other volcanic cloud information] N/A
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
email@example.com (907) 786-7497
Jeff Freymueller, Coordinating Scientist, UAF
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.