ALASKA VOLCANO OBSERVATORY DAILY UPDATE
U.S. Geological Survey
Monday, March 28, 2016, 1:46 PM AKDT (Monday, March 28, 2016, 21:46 UTC)


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

The eruption of Pavlof Volcano that began yesterday afternoon continues. Seismic tremor remains at levels above background, but is significantly lower than the highest levels observed during the eruption. The latest web camera views show a sustained ash plume emanating from the volcano.

According to satellite data, ash emissions continue through 12:30 pm AKDT (20:30 UTC) and an ash plume extends over a distance of more than 400 miles (650 km) to the northeast over interior Alaska. Strongly elevated surface temperatures suggest lava flows at the surface. SIGMET warning messages issued by the National Weather Service (NWS) Alaska Aviation Weather Unit indicate maximum ash cloud altitude of 37,000 ft above sea level. Please see the NWS web page for additional guidance and forecasts of ash movement. http://www.weather.gov/aawu/sigmets

Lava fountaining from the summit crater was observed throughout the night by mariners, pilots, and by residents in Cold Bay, located 37 miles (60 km) to the SW. Volcanic mudflows are likely on the flanks of the volcano and could present a hazard in the local river valleys.


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

Cleveland has been obscured by clouds and no significant activity was observed in satellite views of the volcano over the past 24 hours. No significant activity was detected in seismic or infrasound (pressure sensor).

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

Jessica Larsen, Acting Coordinating Scientist, UAFGI
faust@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.