Printer friendly versionALASKA VOLCANO OBSERVATORY
Wednesday, January 11, 2006 9:40 AM AKST (1840 UTC)
59.3633°N 153.4333°W, Summit Elevation 4134 ft (1260 m)
Current Level of Concern Color Code: RED
AVO recorded two discrete explosions at the summit of Augustine Volcano this morning at 4:44 a.m. and 5:13 a.m. (AST) and responded by changing the level of concern color code from ORANGE to RED. Satellite data confirm that an ash cloud was produced and in collaboration with the National Weather Service (NWS), the height of the cloud was estimated at 30,000 feet above sea level. NWS and AVO are tracking the ash plume which has detached from the vent and is presently drifting to the north and east of Augustine. As of 7:40 a.m. (AST), the ash cloud had traveled 25 mi (40 km) east and 30 mi (50 km) north. An ash-fall advisory was issued by the NWS at 6:44 a.m. (AST). Seismicity has decreased significantly since the explosions, however, it is likely that stronger seismicity and further volcanic activity will resume.
There is no tsunami hazard associated with the current activity.
If the volcano follows a pattern similar to the 1976 and 1986 eruptions, we would expect a further intensification of seismic activity prior to similar or larger explosive events. It is also possible that an explosive eruption could occur with little or no warning.
AVO is monitoring the situation closely and will issue further updates as new information and analyses become available.
Further information on Augustine Volcano and related hazards and response plans can be found at the following web sites:
Alaska Volcano Observatory: Most recent information on Augustine Volcano
U.S. Geological Survey: Hazards associated with volcanic ash fall
NOAA National Weather Service: Ash cloud trajectories and aviation warnings
NOAA West Coast and Alaska Tsunami Warning Center: Tsunami issues related to Augustine
Alaska Division of Homeland Security and Emergency Management: Community preparedness
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 OR (907) 474-7274
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.