USGS Volcano Hazards Program Volcano Update


AVO update page and observatory web site


A thermal anomaly was visible at Cleveland Volcano over the past 24 hours. No explosions have been detected by regional infrasound data.

Sudden explosions of blocks and ash are possible with little or no warning. Ash clouds, if produced, could exceed 20,000 feet above sea level. If a large ash-producing event occurs, nearby seismic, infrasound, or volcanic lightning networks should alert AVO staff quickly. However, for some events, a delay of several hours is possible. Cleveland Volcano does not have a local seismic network and is monitored using only distant seismic and infrasound instruments and satellite data.

AVO will continue to monitor the volcano and issue additional information as available.


Update in Common Alerting Protocol (CAP) format