Printer friendly versionALASKA VOLCANO OBSERVATORY
Sunday, February 12, 2006 1:00 PM AKST (2200 UTC)
59.3633°N 153.4333°W, Summit Elevation 4134 ft (1260 m)
Current Level of Concern Color Code: ORANGE
Seismic data continues to indicate that a new lava dome is growing on the summit of Augustine Volcano. In the past 24 hours, rock fall events and small pyroclastic flows have occurred intermittently and this activity is probably associated with minor collapses of the lava dome. The rate of activity is similar to yesterday.
A plume composed of variable amounts of gas, steam, and small amounts of ash is likely being emitted from the summit although AVO has been unable to confirm this due to poor weather. Given the current level of unrest, it is possible that low-level, dilute ash clouds are present in the vicinity of the volcano. 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
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.