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ARCHIVED REPORT
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ALASKA VOLCANO OBSERVATORY

CURRENT STATUS REPORT

Saturday, February 25, 2006 12:30 PM AKST (2130 UTC)




AUGUSTINE VOLCANO (CAVW#1103-01-)

59°21'48"N 153°26'W , Summit Elevation 4134 ft (1260 m)

Current Level of Concern Color Code: ORANGE



Unrest continues at Augustine Volcano. Over the past 24 hours, seismicity has been relatively low but remains above background levels. Seismic data indicate that small rock avalanches from the lava dome are occurring intermittently. A plume composed of variable amounts of gas, steam, and small amounts of ash is likely being emitted intermittently from Augustine's summit. Occasional, but localized ash clouds and light ash fall may be produced by collapses of the lava dome. Evidence of light ash fall on the flanks of the volcano is visible in images from the on-island web camera this week.



During a visit to the island on February 24, AVO staff performed maintenance on geophysical instruments. An over flight of the volcano to make observations and measure volcanic gas yesterday also was successful. No new changes at the summit were observed, and information on gas emissions will be available later next week.



Dome building eruptive activity will likely continue over the next few days or weeks and may continue intermittently over the next several months. During dome building eruptions, brief, energetic explosions can occur with little or no warning. 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.



AVO is monitoring the situation closely and the observatory remains 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





KOROVIN VOLCANO (ATKA ISLAND) (CAVW#1101-16)

52°22'52"N 174°9'15"W , Summit Elevation 5030 ft (1533 m)

Current Level of Concern Color Code: YELLOW



Seismicity at Korovin Volcano remains slightly above background. Clouds have obscured views of the volcano by satellite. AVO has received no reports of activity at the volcano. There are no indications that an eruption is imminent.



VOLCANO INFORMATION ON THE INTERNET: http://www.avo.alaska.edu



RECORDING ON THE STATUS OF ALASKA'S VOLCANOES (907) 786-7478



CONTACT INFORMATION:

Chris Waythomas, Acting Scientist-in-Charge, USGS

chris@usgs.gov (907) 786-7497



Steve McNutt, Acting Coordinating Scientist, UAF-GI

steve@giseis.alaska.edu (907) 474-7131



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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