Printer friendly versionALASKA VOLCANO OBSERVATORY
Tuesday, February 14, 2006 1:45 PM AKST (2245 UTC)
59°21'48"N 153°26'W , Summit Elevation 4134 ft (1260 m)
Current Level of Concern Color Code: ORANGE
Poor weather and steam have prevented direct views of Augustine's summit over the past several days. However, rock falls and small pyroclastic flows continue as indicated by signals on AVO seismometers. A low-light camera operated by the University of Alaska Fairbanks captured a small hot avalanche down the north flank of the volcano just before midnight on February 12-13. The event was also recorded on AVO's pressure sensor on Augustine Island. On yesterday's observation flight, a light dusting of new ash on the east flank of the volcano may have been related to this avalanche event. Satellite data show that a thermal anomaly persists at the volcano's summit. Together, these data suggest that the lava dome continues to grow and experience occasional, minor collapse events.
A plume composed of variable amounts of gas, steam, and small amounts of ash is likely being emitted from the summit and occasional very localized ash clouds are likely to be produced by collapses from the lava dome.
It is still possible for brief, energetic explosions to occur with little or no warning, although none have occurred since January 30. Such explosions could produce larger amounts of ash leading to the formation of drifting ash clouds that could rise more than 25,000 feet above sea level.
Based on all available data, AVO believes that dome building eruptive activity will continue over the next few days or weeks and may continue intermittently over the next several months.
AVO is monitoring the situation closely and the observatory is staffed 24/7. For up-to-date Ashfall Advisories and wind trajectories, please refer to the National Weather Service website: http://pafc.arh.noaa.gov/augustine.php
ABBREVIATED COLOR CODE KEY
(contact AVO for complete description):
GREEN volcano is dormant; normal seismicity and fumarolic activity occurring
YELLOW volcano is restless; eruption may occur
ORANGE volcano is in eruption or eruption may occur at any time
RED significant eruption is occurring or explosive eruption expected at any time
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, Acting 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.