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ARCHIVED REPORT
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ALASKA VOLCANO OBSERVATORY

CURRENT STATUS REPORT

Friday, February 4, 2005 3:35 PM AST (February 5, 0035 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: ORANGE



After a decrease in seismic activity through the early morning, seismicity

at Mount Veniaminof picked up and is again at a level similar to last night

when strombolian activity, or ejection of hot blocks and lava, was clearly

visible to residents of Perryville, 30 km (22 miles) from the volcano. The

eruption was also visible in web camera views and seen by satellite as an

increase in surface temperature. We do not expect that this current

activity will put ash into the air above 13,000 ft (4,000 m) above sea

level.



Low-level strombolian activity that ejects blocks of hot rock and lava

could occur with little or no warning, though the ejecta would stay within

the summit caldera. We expect steam and ash emissions to continue and could

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

active cone. Light ash falls outside of the summit caldera are possible.

There are no indications that a larger eruption is imminent.



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 to be recorded beneath Mount Spurr.

The volcano was clear in web camera and satellite views today and showed

nothing unusual. 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:



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



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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