Printer friendly versionALASKA VOLCANO OBSERVATORY
Saturday, February 11, 2006 1:20 PM AKST (2220 UTC)
59.3633°N 153.4333°W, Summit Elevation 4134 ft (1260 m)
Current Level of Concern Color Code: ORANGE
Seismic data indicate that the new lava dome on Augustine's summit continues to grow. Seismic stations on the flanks of the volcano continue to record rockfalls and pyroclastic flows associated with small volume collapses of the lava dome. This activity is occurring at a rate similar to yesterday.
A plume composed of gas, steam, and small amounts of ash likely continues to be emitted from the summit and low-level, dilute ash clouds are likely present in the vicinity of the volcano. It is possible that more energetic explosions may occur without warning. These 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
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.