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U.S. Geological Survey
Saturday, June 15, 2013, 12:04 PM AKDT (Saturday, June 15, 2013, 20:04 UTC)

55°25'2" N 161°53'37" W, Summit Elevation 8261 ft (2518 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Eruptive activity at Pavlof has declined somewhat over the past 24 hours. Elevated surface temperatures persisted until 15 June 2013 08:20 UTC (16:20 AKDT on June 14), and none have been observed since. No plumes were visible in satellite images.

Concurrent with the decrease in thermal activity, seismic tremor and explosion signals also declined in the past 24 hours. Minor ash emissions have also likely stopped. Web camera images show cloudy conditions. Eruptive activity could increase again with little warning.

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

The eruption of Veniaminof volcano continues. Photographs taken yesterday from Port Moller show no ash emission in progress. A Landsat-8 satellite image collected yesterday afternoon shows the lava flow and vent as well as a very minor ash deposit on snow within the ice-filled caldera north of the active intracaldera cinder cone.

Recent satellite images show intense elevated surface temperatures at the intracaldera cinder cone consistent with the presence of lava. Volcanic tremor continues unchanged in the past 24 hours. Web camera images have been obscured by clouds.

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

Low-level clouds obscured the volcano in web camera the past 24 hours. No elevated surface temperatures were observed in satellite images. We have received no other reports of activity at the volcano.

Sudden explosions of blocks and ash are still possible with little or no warning. Ash clouds, if produced, could exceed 20,000 feet above sea level. If a large ash-producing event occurs, nearby seismic, infrasound, or volcanic lightning networks should alert AVO staff quickly. However, for some events, a delay of several hours is possible. Cleveland volcano does not have a local seismic network and is monitored using only distant seismic and infrasound instruments and satellite data.

VOLCANO INFORMATION ON THE INTERNET: http://www.avo.alaska.edu


Stephanie Prejean, Acting Scientist-in-Charge, USGS
sprejean@usgs.gov (907) 786-7497

Jessica Larsen, Acting Coordinating Scientist, UAFGI
jflarsen@alaska.edu (907) 474-7992

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.
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URL: www.avo.alaska.edu/activity/report.php
Page modified: December 2, 2016 10:12
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