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ARCHIVED REPORT
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ALASKA VOLCANO OBSERVATORY

Current Status Report

Thursday, October 5, 2006 1:25 PM AKDT (2125 UTC)




FOURPEAKED VOLCANO (CAVW#1102-26-)

58°46'12" N153°40'19" W, Summit Elevation 6903 ft (2104 m)

Current Level of Concern Color Code: YELLOW

Current Volcanic Activity Alert Level: Advisory



Seismic data indicate that low level earthquake activity continues at Fourpeaked. Seismicity rates however have decreased since the swarm reported yesterday. Cloudy conditions have prevented any visual or satellite observations of Fourpeaked over the past 24 hours.



Fourpeaked volcano is not known to have erupted historically and the age of the last eruption is not known. Geological investigations have been limited and ice covers much of the area. Because of this, the range of sizes and styles of past eruptions are not well-constrained. However, the composition of the volcano indicates that eruptions of Fourpeaked can be explosive, possibly producing plumes that reach in excess of 10 km (33,000 ft) above sea level and local ashfall.



CLEVELAND VOLCANO (CAVW#1101-24-)

52°49'24" N169°56'35" W, Summit Elevation 5676 ft (1730 m)

Current Level of Concern Color Code: YELLOW

Current Volcanic Activity Alert Level: Advisory



Cleveland has been obscured by clouds during most of the past 24 hours. AVO has received no new information about the status of Cleveland Volcano.



There is no real-time seismic network at Cleveland and AVO is unable to track local earthquake activity that may indicate volcanic unrest. Short-lived ash explosions may occur without warning and may go undetected on satellite imagery. Should significant activity send ash above 20,000 feet, detection by satellite is more likely.



VENIAMINOF VOLCANO (CAVW#1102-07-)

56°11'44" N159°23'18" W, Summit Elevation 8225 ft (2507 m)

Current Level of Concern Color Code: YELLOW

Current Volcanic Activity Alert Level: Advisory



Web camera images today show a small steam plume from Veniaminof's cone. Seismicity at Veniaminof remains low but above background.



Intermittent, short-lived, very small-volume steam and ash bursts from the intracaldera cone have been common over the past few years. Ash from these events is not likely to extend beyond the caldera rim. There are no indications that a larger 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, UAFGI

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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