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ARCHIVED REPORT
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ALASKA VOLCANO OBSERVATORY

CURRENT STATUS REPORT

Monday, February 28, 2005, 3:50 PM AST (Feb 29 0050 UTC)



ALASKA VOLCANOES WITH ELEVATED COLOR CODES:



MOUNT VENIAMINOF VOLCANO (CAVW #1102-07)

5610'N 15923'W, Summit Cone Elevation 7,073 ft (2,156 m)

Current Level of Concern Color Code: YELLOW



Seismicity at Veniaminof volcano remains near background levels. Clear

views of the volcano in satellite and web camera images throughout the day

show only intermittent, low-level steaming. Although activity has

diminished, low-level explosions of steam and ash similar to those observed

over the past month could resume and these may pose a hazard to people and

low flying aircraft in the vicinity of the active cone.



MOUNT SPURR VOLCANO (CAVW#1103-04)

6118' N 15215' W, Summit Elevation 11,070 ft (3,374 m)

Current Level of Concern Color Code: YELLOW



Elevated levels of seismicity continue much as they have for the past

month. Clear views of the volcano in satellite and web camera images were

possible throughout the day but no activity was observed. There are no

indications that an eruption is imminent.



KOROVIN VOLCANO (Atka volcanic center-CAVW #1101-16)

52.381 N 174.154 W, Summit Cone Elevation 5,029 ft (1,533 m)

Current Level of Concern Color Code: YELLOW



AVO has received no new information or reports of further activity at

Korovin volcano. Data from a seismometer in Atka village show no signals

similar to that recorded during the event witnessed on February 23.

Volcanic emissions from Korovin such as ash bursts and drifting ash clouds

could pose a hazard to people and low flying aircraft in the vicinity of

the volcano and light ash fall on parts of Atka Island, including the

village of Atka may occur. There are no indications that a large 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:

John Power, Acting Scientist-in-Charge, USGS

jpower@usgs.gov (907) 786-7497



Chris Nye, Acting Coordinating Scientist, UAF-GI

cnye@gieis.alaska.edu (907) 474-7430



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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