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VOLCANO ACTIVITY NOTIFICATIONS

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ALASKA VOLCANO OBSERVATORY DAILY UPDATE
Sunday, July 28, 2013 10:13 AM AKDT (Sunday, July 28, 2013 18:13 UTC)


VENIAMINOF VOLCANO (CAVW #1102-07-)
56°11'52" N 159°23'35" W, Summit Elevation 8225 ft (2507 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Low-level eruptive activity consisting of lava effusion and minor emissions of steam and ash continues. Nearly continuous, gradually fluctuating volcanic tremor and occasional explosions have been observed in seismic data from Veniaminof Volcano over the past 24 hours. Elevated surface temperatures at the intracaldera cone also have been observed in satellite data. Web camera views from Perryville have been obscured by clouds and fog. Yesterday, AVO received a pilot report of ash emission to 1,000 - 2,000 feet above the cone, drifting to the northwest. This did not correspond with any unusual seismicity. Since then, we have received no additional reports of activity at the volcano.

PAVLOF VOLCANO (CAVW #1102-03-)
55°25'2" N 161°53'37" W, Summit Elevation 8261 ft (2518 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW

Seismicity has remained at low levels over the past 24 hours. Elevated surface temperatures, consistent with cooling lava flows, were detected in satellite data over the past 24 hours, although, views of the volcano in satellite data and in the Cold Bay web camera were often obscured by clouds. It remains possible for eruptive activity to resume at any time and the degree of seismic activity remains above background levels.

CLEVELAND VOLCANO (CAVW #1101-24-)
52°49'20" N 169°56'42" W, Summit Elevation 5676 ft (1730 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW

Elevated surface temperatures were detected at the summit of Cleveland Volcano intermittently in satellite data over the past 24 hours. A possible plume was observed in satellite data at 03:26 UTC that extended about 50 miles to the northwest of the volcano. Since then, nothing has been observed in satellite data. Views of the summit in the Nikolski web camera have been obscured by clouds and fog. AVO has received no other reports of activity at 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:
John Power, Scientist-in-Charge, USGS
jpower@usgs.gov (907) 786-7497

Jeff Freymueller, Coordinating Scientist, UAFGI
jeff.freymueller@gi.alaska.edu (907) 378-7556

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 16, 2014 09:40
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