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AVO VOLCANO ACTIVITY NOTIFICATION

ALASKA VOLCANO OBSERVATORY DAILY UPDATE
U.S. Geological Survey
Sunday, May 15, 2016, 1:24 PM AKDT (Sunday, May 15, 2016, 21:24 UTC)


CLEVELAND VOLCANO (VNUM #311240)
52°49'20" N 169°56'42" W, Summit Elevation 5676 ft (1730 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Cleveland Volcano has been obscured by clouds over the past day and nothing of note has been observed in satellite data. No anomalous seismicity or explosions have been detected.

PAVLOF VOLCANO (VNUM #312030)
55°25'2" N 161°53'37" W, Summit Elevation 8261 ft (2518 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Minor ash emissions at Pavlof Volcano were observed by local observers and in web camera views yesterday evening from about 19:27-21:07 AKDT (3:27-5:07 UTC). The diffuse ash plume reached heights of 15,000-18,000 feet above sea level and did not travel far and remained in the general vicinity of the volcano. Since early last evening, the volcano has been relatively quiet and no additional ash emissions have been observed. Clear satellite views of the volcano obtained over the past day have not indicated any ash plumes or thermal signals until about 8:50 AM AKDT(16:50 UTC) this morning, when elevated surface temperatures were observed in satellite data. Thermal signals at Pavlof are typically associated with lava effusion and it is possible that low-level lava fountaining may have been temporarily occurring this morning. Seismic activity remains elevated and above background levels. AVO will continue to monitor Pavlof closely as the present levels of seismicity indicate that the volcano remains in a restless state and additional ash emissions and lava effusion at the summit may resume with little or no warning.

OTHER ALASKA VOLCANOES

Other Alaska volcanoes show no signs of significant unrest: http://www.avo.alaska.edu/activity/

AVO scientists conduct daily checks of earthquake activity at all seismically-monitored volcanoes, examine web camera and satellite images for evidence of airborne ash and elevated surface temperatures, and consult other monitoring data as needed.

For definitions of Aviation Color Codes and Volcano Alert Levels, see: http://www.avo.alaska.edu/color_codes.php

FOR MORE INFORMATION ON ALASKA VOLCANOES: http://www.avo.alaska.edu

SUBSCRIBE TO VOLCANO ALERT MESSAGES by email: http://volcanoes.usgs.gov/vns/

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CONTACT INFORMATION:

Michelle Coombs, Scientist-in-Charge, USGS
mcoombs@usgs.gov (907) 786-7497

Jeff Freymueller, Coordinating Scientist, UAFGI
jeff.freymueller@gi.alaska.edu (907) 322-4085

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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Page modified: December 2, 2016 10:12
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