Printer friendly versionALASKA VOLCANO OBSERVATORY
Saturday, February 4, 2006 9:10 AM AKST (1810 UTC)
59.3633°N 153.4333°W, Summit Elevation 4134 ft (1260 m)
Current Level of Concern Color Code: ORANGE
Seismicity at Augustine dropped significantly yesterday evening and has remained low throughout this morning. Observations from a fixed wing overflight yesterday afternoon were hampered by cloudy conditions, but observers could see that a steam-rich, ash-poor plume emerged from the cloud tops and reached no higher than 6,000 feet above sea level. The National Weather Service reports seeing no ash in satellite or radar and has cancelled their SIGMET for Augustine. These observations indicate that eruptive activity has declined and consists of low-level ash plumes and occasional pyroclastic flows on the island's flanks.
Further explosive activity producing ash clouds to altitudes over 25,000 feet may still occur with little or no warning. AVO is monitoring the situation closely and the observatory is staffed 24/7. Please refer to our hourly updates and information releases for the most up-to-date status of volcanic activity. 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
John Eichelberger, Coordinating Scientist, UAF-GI
email@example.com (907) 474-5530 OR (907) 590-8247
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.