USGS Volcano Hazards Program Volcano Update


AVO update page and observatory web site


Elevated surface temperatures were detected in satellite images of Cleveland in the last 24 hours. AVO has received no other reports of activity.

The development of a lava dome in the summit crater indicates that 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. There is no real-time seismic monitoring network on Mount Cleveland and AVO is unable to track activity in real time.

Update in Common Alerting Protocol (CAP) format