ALASKA VOLCANO OBSERVATORY DAILY UPDATE
U.S. Geological Survey
Sunday, August 29, 2010, 10:20 AM AKDT (Sunday, August 29, 2010, 18:20 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
Weather conditions remain cloudy today at Cleveland Volcano preventing a view of the summit in satellite imagery. The last clear image of Cleveland Volcano was on Tuesday August 24 and showed a thermal anomaly. AVO continues to monitor the volcano using satellite imagery.
Without a real-time seismic network at Cleveland, AVO is unable to track local earthquake activity related to volcanic unrest. Low-level ash emissions at Cleveland occur frequently and do not necessarily mean a larger eruption is imminent. Short-lived explosions with ash clouds or plumes that could exceed 20,000 ft above sea level can occur without warning and may go undetected on satellite imagery.
Cleveland volcano forms the western half of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. It is located about 75 km (45 mi.) west of the community of Nikolski, and 1500 km (940 mi.) southwest of Anchorage. The volcano's most recent significant eruption was in July of 2008 and produced an ash plume to over 6 km (20,000 ft) above sea level. Another significant eruption began in February, 2001 and it produced 3 explosive events that produced ash clouds as high as 12 km (39,000 ft) above sea level. The 2001 eruption also produced a rubbly lava flow and hot avalanche that reached the sea. The most recent minor ash emissions were observed in and June 2010.
Chris Waythomas, Acting Scientist-in-Charge, USGS
email@example.com (907) 786-7497
Jon Dehn, Acting Coordinating Scientist, UAF
firstname.lastname@example.org (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.