USGS Volcano Hazards Program Volcano Update


AVO update page and observatory web site


No activity was observed in satellite images of Cleveland Volcano over the past 24 hours. AVO has received no reports of activity from local observers or passing aircraft.

It remains possible for intermittent, sudden explosions of ash to occur at any time. Ash clouds exceeding 20,000 feet above sea level may develop. Such explosions and their associated ash clouds may go undetected in satellite imagery for hours. If a large, explosive, ash-producing event occurs, seismic, infrasound, or volcanic lightning may be detected by local and regional monitoring networks. There is no real-time seismic monitoring network on Mount Cleveland.

Update in Common Alerting Protocol (CAP) format