ALASKA VOLCANO OBSERVATORY STATUS REPORT
U.S. Geological Survey
Saturday, April 7, 2012, 11:57 AM AKDT (Saturday, April 7, 2012, 19:57 UTC)
60°1'55" N 153°5'30" W,
Summit Elevation 10016 ft (3053 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW
Seismic activity at Iliamna Volcano remains slightly above background. Intermittent clear web camera and satellite views show no unusual activity today.
The current activity at Iliamna does not indicate an imminent or certain eruption. A similar seismic swarm at Iliamna in 1996-1997 was not followed by eruptive activity. Prior to an eruption, AVO would expect to see a further increase in earthquake activity.
52°49'20" N 169°56'42" W,
Summit Elevation 5676 ft (1730 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE
The low-level eruption of Cleveland continues. Two short-duration explosions occurred yesterday at approximately 4:35PM AKDT (00:35 UTC) and 9:26PM AKDT (05:26 UTC) that were detected by distant infrasound (air pressure) and seismic stations. The resulting eruption clouds were low level, ash poor and did not rise above the about 10,000 feet above sea level (3km). Elevated surface temperatures were observed in satellite images near the times of the explosions, further indicating that low-level unrest continues. There have been no observations of renewed dome growth at this time.
While the volcano remains active, sudden explosions of blocks and ash are likely. It is possible for associated ash clouds to exceed 20,000 feet above sea level. If a larger 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.
VOLCANO INFORMATION ON THE INTERNET: http://www.avo.alaska.edu
RECORDING ON THE STATUS OF ALASKA'S VOLCANOES (907) 786-7478
John Power, Scientist-in-Charge, USGS
firstname.lastname@example.org (907) 786-7497
Mike West, Acting Coordinating Scientist, UAF
email@example.com (907) 474-6977
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.