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ARCHIVED REPORT
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ALASKA VOLCANO OBSERVATORY


Current Status Report


Monday, September 24, 2007 12:35 PM AKDT (2035 UTC)




CLEVELAND VOLCANO (CAVW#1101-24-)

52°49'20" N169°56'42" W, Summit Elevation 5676 ft (1730 m)

Current Aviation Color Code: YELLOW

Current Volcano Alert Level: Advisory



Cloudy conditions have obscured views of the volcano by satellite.



AVO continues to monitor the volcano closely with satellite imagery as weather allows. The lack of a real-time seismic network at Cleveland means that AVO is unable to track local earthquake activity related to volcanic unrest. Short-lived explosions of ash that could exceed 20,000 ft above sea level can occur without warning and may go undetected on satellite imagery.



PAVLOF VOLCANO (CAVW#1102-03-)

55°24'57" N161°53'24" W, Summit Elevation 8261 ft (2518 m)

Current Aviation Color Code: YELLOW

Current Volcano Alert Level: Advisory



Seismic activity at Pavlof Volcano remains low. Cloudy conditions obscure the volcano from satellite and web camera views today. The decrease in seismicity and cessation of eruptive activity may be a lull in the current eruption. Other historical eruptions of Pavlof have been characterized by periods of diminished activity followed by periods of low-level eruption and occasional explosive events. Renewed eruptive activity can begin at any time with little precursory seismicity. AVO continues to monitor the volcano closely.



AUGUSTINE VOLCANO (CAVW#1103-01-)

59°21'45" N153°26'6" W, Summit Elevation 4134 ft (1260 m)

Current Aviation Color Code: YELLOW

Current Volcano Alert Level: Advisory



Shallow seismic activity at Augustine Volcano continues. A cloud cap over the volcano has obscured the summit from satellite and web camera views.



The earthquakes that have been occurring are small and shallow. However, some disruption of the summit dome may be occurring as a result of this activity and this could cause rock fall and rock avalanche events on the flanks of the volcano.



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



Steve McNutt, Coordinating Scientist, UAF

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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