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ARCHIVED REPORT
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ALASKA VOLCANO OBSERVATORY

INFORMATION RELEASE

Sunday, January 29, 2006 6:30 PM AKST (330 UTC)




AUGUSTINE VOLCANO (CAVW#1103-01-)

59.3633°N 153.4333°W, Summit Elevation 4134 ft (1260 m)

Current Level of Concern Color Code: RED



Augustine volcano has been in a state of continuous eruption for about the past 24 hours. The eruption has been characterized by steady ash emission and small pyroclastic flows. The present eruption began Saturday afternoon at 14:30 AKST and since 20:19 AKST January 28 (0519 January 29 UTC) the level of seismicity has been generally elevated.



An observation flight to the volcano this afternoon encountered diffuse drifting ash clouds from the summit to about 25,000 feet. The ash clouds and overcast conditions hindered attempts to make close-in observations. Ash and steam clouds were observed rising from pyroclastic flows on the north flank of the volcano. Steam plumes were observed rising from the NNE coastline indicating that some of the the pyroclastic flows had entered the sea.



Ash emission from the volcano has been obvious in satellite and radar observations. The plume is ash-rich and is drifting to the west-southwest and then south (over Kodiak Island) at up to 25,000 to 30,000 feet above sea level. For current ash fall advisories and wind trajectories, please see the National Weather Service website: http://pafc.arh.noaa.gov/augustine.php.



At this time it is uncertain how long this phase of the eruption will last, but the present type of activity may continue for hours to days.



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



CONTACT INFORMATION:

Tom Murray, Scientist-in-Charge, USGS

tlmurray@usgs.gov (907) 786-7497



John Eichelberger, Coordinating Scientist, UAF-GI

eich@gi.alaska.edu (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.
VOLCANO ALERT LEVELS
NORMAL
Volcano is in typical background, noneruptive state or, after a change from a higher level, volcanic activity has ceased and volcano has returned to noneruptive background state.
ADVISORY
Volcano is exhibiting signs of elevated unrest above known background level or, after a change from a higher level, volcanic activity has decreased significantly but continues to be closely monitored for possible renewed increase.
WATCH
Volcano is exhibiting heightened or escalating unrest with increased potential of eruption, timeframe uncertain, OR eruption is underway but poses limited hazards.
WARNING
Hazardous eruption is imminent, underway, or suspected.

AVIATION COLOR CODES
GREEN
Volcano is in typical background, noneruptive state or, after a change from a higher level, volcanic activity has ceased and volcano has returned to noneruptive background state.
YELLOW
Volcano is exhibiting signs of elevated unrest above known background level or, after a change from a higher level, volcanic activity has decreased significantly but continues to be closely monitored for possible renewed increase.
ORANGE
Volcano is exhibiting heightened or escalating unrest with increased potential of eruption, timeframe uncertain, OR eruption is underway with no or minor volcanic-ash emissions [ash-plume height specified, if possible].
RED
Eruption is imminent with significant emission of volcanic ash into the atmosphere likely OR eruption is underway or suspected with significant emission of volcanic ash into the atmosphere [ash-plume height specified, if possible].

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Page modified: May 27, 2014 10:23
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