Printer friendly versionALASKA VOLCANO OBSERVATORY CURRENT STATUS REPORTWednesday, April 4, 2012 12:27 PM AKDT (Wednesday, April 4, 2012 20:27 UTC)CLEVELAND VOLCANO
52°49'20" N 169°56'42" W, Summit Elevation 5676 ft (1730 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE
A small, short duration explosion was detected today from Cleveland Volcano on distant infrasound seismic networks. The time of the explosion was approximately 1:12 AM AKDT (9:12 UTC), but cloudy weather prevented satellite observation of the eruption cloud. This explosion was similar to small events that occurred in December 2011. The small ash clouds from those events dissipated quickly and did not affect air traffic.
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.ILIAMNA VOLCANO
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. Partly cloudy web camera and satellite views over the past 24 hours show no unusual activity.
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.
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
Jonathan Dehn, Acting Coordinating Scientist, UAF
email@example.com (907) 474-6499
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.