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ALASKA VOLCANO OBSERVATORY DAILY UPDATE
Thursday, July 25, 2013 12:13 PM AKDT (Thursday, July 25, 2013 20:13 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

Nearly continuous, low-level volcanic tremor continues to be seen in seismic data. Elevated surface temperatures at the intracaldera cone of Veniaminof volcano were detected in satellite data today. Incandescence in night-time views and low-level ash and steam emissions were observed in images from the FAA web camera positioned in Perryville. A pilot report from 8:00 AM AKDT this morning described an ash plume to 200-300 feet above the erupting cone and dispersing 15 miles to the south. Available data indicate an ongoing low-level eruption characterized by intermittent effusion of lava and emission of minor amounts of ash and steam.

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 remains at low levels at Pavlof. Elevated surface temperatures, consistent with cooling lava flows, were detected in satellite data over the past 24 hours. Most views of the volcano by satellite and web cameras have been obscured by clouds. No ash or gas emissions have been detected in satellite data, web camera images, or reported by pilots.

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 Cleveland in satellite data over the past 24 hours. A plume was detected in satellite imagery from 07:22 AM AKDT (15:22 UTC) July 24 until 5:24 PM AKDT (1:24 UTC July 25). No ash signal was detected in satellite data, thus the plume may have been mostly composed of steam and gas. Views of the summit during this time were obscured by clouds. 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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