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ALASKA VOLCANO OBSERVATORY STATUS REPORT
U.S. Geological Survey
Sunday, November 13, 2011, 12:27 PM AKST (Sunday, November 13, 2011, 21:27 UTC)
52°49'20" N 169°56'42" W,
Summit Elevation 5676 ft (1730 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW
Weakly elevated temperatures at Cleveland's summit were observed overnight in satellite images, at the site of the new lava dome.
We are uncertain if the lava eruption has stopped or paused, and it is possible for effusion of lava to resume at any time. If it does, this could lead to the formation of lava flows that overtop the crater rim and flow down the flanks of the volcano. Such lava flows could collapse and produce avalanches of hot debris that reach the sea and may be accompanied by small ash clouds.
It remains possible for sudden explosions and ash emission to occur, and ash clouds exceeding 20,000 feet above sea level may develop. Such explosions and their associated ash clouds may go undetected in satellite imagery for hours. However, in cooperation with the University of Washington, AVO has implemented a lightning alarm system that may detect significant ash-producing events within minutes of onset. If a large explosive event occurs, seismic signals may be recorded on AVO seismic networks at nearby volcanoes; however, there is no real-time seismic monitoring network on Mt. Cleveland.
Additional information on Cleveland Volcano and the current activity may be found at this link:
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.