ALASKA VOLCANO OBSERVATORY DAILY UPDATE U.S. Geological Survey Saturday, October 10, 2020, 12:15 PM AKDT (Saturday, October 10, 2020, 20:15 UTC)
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
Seismicity was low over the past day. Satellite and web camera observations were obscured by clouds over the past day.
Great Sitkin volcano is monitored by local seismic and infrasound sensors, satellite data, web cameras, and remote infrasound and lightning networks.
PAVLOF VOLCANO
(VNUM #312030)
55°25'2" N 161°53'37" W,
Summit Elevation 8261 ft (2518 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW
Seismicity remained low over the past day. Minor and typical steaming from the summit was observed in web camera images during periods of clear weather. Satellite data showed no evidence of increased surface temperatures.
The level of unrest at Pavlof can change quickly and the progression to eruptive activity can occur with little or no warning. AVO continues to monitor Pavlof closely and will provide any new information about the status of the volcano when or if it becomes available.
Pavlof is monitored by local seismic and infrasound sensors, satellite data, web cameras, and distant infrasound and lightning networks.
SEMISOPOCHNOI VOLCANO
(VNUM #311060)
51°55'44" N 179°35'52" E,
Summit Elevation 2625 ft (800 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW
Seismicity remained low over the past day. No activity was detected on the regional infrasound network or in satellite data.
Semisopochnoi is monitored by local seismic sensors, satellite data, and regional infrasound and lightning detection instruments. An infrasound array on Adak Island may detect explosive emissions from Semisopochnoi with a slight delay (approximately 13 minutes) if atmospheric conditions permit.
David Fee, Coordinating Scientist, UAFGI
dfee1@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.