ALASKA VOLCANO OBSERVATORY DAILY UPDATE
U.S. Geological Survey
Monday, December 25, 2017, 10:32 AM AKST (Monday, December 25, 2017, 19:32 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
No eruptive activity was observed in cloudy satellite views, or detected by seismic or infrasound sensors, over the past 24 hours.
GREAT SITKIN VOLCANO
(VNUM #311120)
52°4'35" N 176°6'39" W,
Summit Elevation 5709 ft (1740 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code:
YELLOW
No eruptive activity was observed in cloudy satellite views or in seismic or infrasound data over the past 24 hours.
SHISHALDIN VOLCANO
(VNUM #311360)
54°45'19" N 163°58'16" W,
Summit Elevation 9373 ft (2857 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code:
YELLOW
Low-level unrest continues at Shishaldin Volcano, with seismicity elevated slightly above background levels. No activity was observed in relatively clear satellite images acquired over the past 24 hours, but web camera views showed that the volcano continues to produce a small steam plume.
OTHER ALASKA VOLCANOES
Information on all Alaska volcanoes is available at : http://www.avo.alaska.edu.
For definitions of Aviation Color Codes and Volcano Alert Levels, see: http://www.avo.alaska.edu/color_codes.php
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
Janet Schaefer, Acting Coordinating Scientist, DGGS
janet.schaefer@alaska.gov (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.