Printer friendly versionALASKA VOLCANO OBSERVATORY
Current Status Report
Sunday, July 29, 2007 1:15 PM AKDT (2115 UTC)
52°49'20" N169°56'42" W, Summit Elevation 5676 ft (1730 m)
Current Aviation Color Code: ORANGE
Current Volcano Alert Level: Watch
Conditions have been mostly cloudy at Cleveland and no thermal anomalies have been reported in the last 24 hours. No steam plume nor any indications of ash emissions were observed. The possibility of an explosion sending an ash cloud to heights in excess of 20,000 ft above sea level remains.
The lack of a real-time seismic network at Cleveland means that AVO is unable to track local earthquake activity related to volcanic unrest. Short-lived explosions with ash plumes that could exceed 20,000 ft above sea level can occur without warning and may go undetected on satellite imagery.
KOROVIN VOLCANO (ATKA ISLAND)
52°22'48" N174°9'22" W, Summit Elevation 5030 ft (1533 m)
Current Aviation Color Code: YELLOW
Current Volcano Alert Level: Advisory
Intermittent, low-level seismic activity continues at Korovin. Clouds obscured views of the volcano by satellite today. On July 27 at 14:30 local (2330 UTC) a steam plume rising 700-800 ft (200-250 m) above the volcano was observed in Atka.
Korovin has erupted several times in the past 200 years, most recently in 1998. Eruptions typically produce minor amounts of ash and occasional, small lava flows. Ash plume heights could exceed 20,000 ft above sea level. Korovin occasionally produces large steam plumes from its summit.
VOLCANO INFORMATION ON THE INTERNET: http://www.avo.alaska.edu
RECORDING ON THE STATUS OF ALASKA'S VOLCANOES (907) 786-7478
Tom Murray, Scientist-in-Charge, USGS
firstname.lastname@example.org (907) 786-7497
Steve McNutt, Coordinating Scientist, UAF-GI
email@example.com (907) 474-7131
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.