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.
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.
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.