According to the Alaska Volcano Observatory, no further explosive activity has been detected at Cleveland Volcano following the event at 2:05 p.m. Alaska Daylight Time yesterday. The small ash emission resulting from that explosion was last visible in satellite data east-southeast of the volcano this morning before dissipating. Due to the increased likelihood of explosive activity at Cleveland, the Aviation Color Code/Volcano Alert Level remains at ORANGE/WATCH.
Additional sudden explosions of blocks and ash are possible with little or no warning. It is possible for associated ash clouds to exceed 20,000 feet above sea level. If a large ash-producing event occurs, seismic, infrasound, or volcanic lightning networks should detect the event and alert AVO staff. There is no real-time seismic monitoring network on Mount Cleveland so AVO is unable to track activity in real time.
For more details, visit http://www.avo.alaska.edu.
PHOTO CAPTION/CREDIT: The true color Worldview-2 image of Cleveland Volcano was collected on June 9, 2012. Image courtesy of D. Schneider.