ALASKA VOLCANO OBSERVATORY STATUS REPORT
U.S. Geological Survey
Friday, December 23, 2016, 7:34 PM AKST (Saturday, December 24, 2016, 04:34 UTC)
53°55'38" N 168°2'4" W,
Summit Elevation 492 ft (150 m)
Current Volcano Alert Level: WARNING
Current Aviation Color Code: RED
Following the hour-long explosive eruption that occurred this morning beginning at about 09:30 AKST (18:30 UTC), seismicity (as recorded on nearby islands) has remained elevated and variable today. The submarine vent for the eruption is immediately adjacent to the northeast shore of Bogoslof Island and there is apparently continuous interaction of hot eruptive products with sea water. Although there is no evidence of current strong explosive activity, based on the unpredictability of the situation and the occurrence of three explosive eruptions in the past four days, the status of the volcano remains Aviation Color Code at RED and Alert Status WARNING.
AVO has no ground-based volcano monitoring equipment on Bogoslof volcano. We will monitor satellite images and data from distant seismic and infrasound instruments for indications of significant activity.
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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Michelle Coombs, Scientist-in-Charge, USGS
firstname.lastname@example.org (907) 786-7497
Janet Schaefer, Acting Coordinating Scientist, DGGS
email@example.com (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.