Hazard Notification System (HANS) for Volcanoes

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AVO/USGS Volcanic Activity Notice

Volcano: Westdahl (VNUM #311340)

Current Volcano Alert Level: NORMAL
Previous Volcano Alert Level: UNASSIGNED

Current Aviation Color Code: GREEN
Previous Aviation Color Code: UNASSIGNED

Issued: Thursday, October 15, 2020, 12:25 PM AKDT
Source: Alaska Volcano Observatory
Notice Number:
Location: N 54 deg 31 min W 164 deg 38 min
Elevation: 5118 ft (1560 m)
Area: Aleutians

Volcanic Activity Summary: The Alaska Volcano Observatory (AVO) has reestablished seismic monitoring instruments at Westdahl volcano and can now confidently monitor seismic unrest at the volcano. With renewed seismic monitoring, the volcano moves from UNASSIGNED to Volcano Alert Level NORMAL and Aviation Color Code GREEN. 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.

Recent Observations:
[Volcanic cloud height] n/a
[Other volcanic cloud information] n/a

Contacts: 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.
(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)
(2) Issued: (20201015/2025Z)
(3) Volcano: Westdahl (VNUM #311340)
(4) Current Color Code: GREEN
(5) Previous Color Code: UNASSIGNED
(6) Source: Alaska Volcano Observatory
(7) Notice Number:
(8) Volcano Location: N 54 deg 31 min W 164 deg 38 min
(9) Area: Aleutians
(10) Summit Elevation: 5118 ft (1560 m)
(11) Volcanic Activity Summary: The Alaska Volcano Observatory (AVO) has reestablished seismic monitoring instruments at Westdahl volcano and can now confidently monitor seismic unrest at the volcano. With renewed seismic monitoring, the volcano moves from UNASSIGNED to Volcano Alert Level NORMAL and Aviation Color Code GREEN. 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.
(12) Volcanic cloud height: n/a
(13) Other volcanic cloud information: n/a
(14) Remarks:
(15) Contacts: Michelle Coombs, Scientist-in-Charge, USGS
mcoombs@usgs.gov (907) 786-7497

David Fee, Coordinating Scientist, UAFGI
dfee1@alaska.edu (907) 322-4085
(16) Next Notice: