ALASKA VOLCANO OBSERVATORY DAILY UPDATE U.S. Geological Survey Saturday, May 5, 2018, 12:41 PM AKDT (Saturday, May 5, 2018, 20:41 UTC)
52°49'20" N 169°56'42" W,
Summit Elevation 5676 ft (1730 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE
Local seismic and infrasound sensors recorded an explosion last night at 05:49 UTC (21:49 local time). The brief explosion produced an ash cloud up to 22,000 ft asl which was observed in satellite data. No significant activity was observed in cloudy satellite images or local monitoring data since the explosion.
Cleveland volcano is monitored by only two seismic stations, which restricts AVO's ability to detect precursory unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data.
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.