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ALASKA VOLCANO OBSERVATORY INFORMATION STATEMENT
U.S. Geological Survey
Friday, March 18, 2022, 3:33 PM AKDT (Friday, March 18, 2022, 23:33 UTC)


A regional telecommunication link in King Salmon was repaired on Thursday and data from seismic networks that monitor seven volcanoes in the Katmai region are now available. The Alaska Volcano Observatory (AVO) can now confidently monitor seismic unrest at these volcanoes. With renewed seismic monitoring, these volcanoes are being moved from UNASSIGNED to a volcano alert level of NORMAL and an aviation color code of GREEN.

Telemetry for the the network that monitors Ugashik-Peulik and Ukinrek Maars, on the Alaska Peninsula, has also been restored. However, only three seismic stations in the network are currently returning data, likely due to heavy snow cover at other stations. This smaller network inhibits AVO's ability to detect precursory unrest that may lead to an eruption; therefore, these volcanoes remain at UNASSIGNED for the time being.

As at other Alaska volcanoes, AVO will continue to monitor seismic, satellite, infrasound, and lightning data, and reports from pilots and ground observers to detect signs of eruptive activity.


GRIGGS VOLCANO (VNUM #312190)
58°21'26" N 155°6'13" W, Summit Elevation 7602 ft (2317 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN

Aviation color code and alert level changed to GREEN/NORMAL due to reestabilished communication links to instrumental monitoring data.

KATMAI VOLCANO (VNUM #312170)
58°16'44" N 154°57'12" W, Summit Elevation 6716 ft (2047 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN

Aviation color code and alert level changed to GREEN/NORMAL due to reestabilished communication links to instrumental monitoring data.

MAGEIK VOLCANO (VNUM #312150)
58°11'41" N 155°15'16" W, Summit Elevation 7103 ft (2165 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN

Aviation color code and alert level changed to GREEN/NORMAL due to reestabilished communication links to instrumental monitoring data.

MARTIN VOLCANO (VNUM #312140)
58°10'9" N 155°21'24" W, Summit Elevation 6102 ft (1860 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN

Aviation color code and alert level changed to GREEN/NORMAL due to reestabilished communication links to instrumental monitoring data.

NOVARUPTA VOLCANO (VNUM #312180)
58°15'55" N 155°9'33" W, Summit Elevation 2759 ft (841 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN

Aviation color code and alert level changed to GREEN/NORMAL due to reestabilished communication links to instrumental monitoring data.

SNOWY MOUNTAIN VOLCANO (VNUM #312200)
58°20'1" N 154°41'9" W, Summit Elevation 7090 ft (2161 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN

Aviation color code and alert level changed to GREEN/NORMAL due to reestabilished communication links to instrumental monitoring data.

TRIDENT VOLCANO (VNUM #312160)
58°14'3" N 155°6'9" W, Summit Elevation 3599 ft (1097 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN

Aviation color code and alert level changed to GREEN/NORMAL due to reestabilished communication links to instrumental monitoring data.

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/

FOLLOW AVO ON FACEBOOK: https://facebook.com/alaska.avo

FOLLOW AVO ON TWITTER: https://twitter.com/alaska_avo

CONTACT INFORMATION:

Michelle Coombs, Scientist-in-Charge, USGS, mcoombs@usgs.gov, (907) 786-7497

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.