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USGS Volcano Notice - DOI-USGS-AVO-2020-12-15T15:50:51-09:00
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AVO/USGS Volcanic Activity Notice
Volcano: Makushin (VNUM #311310)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN
Issued: Tuesday, December 15, 2020, 3:59 PM AKST
Source: Alaska Volcano Observatory
Notice Number: 2020/A1284
Location: N 53 deg 53 min W 166 deg 55 min
Elevation: 5906 ft (1800 m)
Area: Aleutians
Volcanic Activity Summary: The previous Aviation Color Code and the Volcano Alert Level change was a false alarm. Activity at Makushin Volcano remains at background levels, thus the Aviation Color Code and the Volcano Alert Level are being decreased to GREEN/NORMAL.
Recent Observations:
[Volcanic cloud height] n/a
[Other volcanic cloud information] n/a
Remarks: Makushin volcano is located on northern Unalaska Island in the eastern Aleutian Islands. Makushin is a broad, ice-capped stratovolcano which rises to an elevation of 6680 feet. The summit caldera, 3 km diameter, is the site of frequent steam and minor ash eruptions; however, no large eruptions have occurred in this century. The community of Unalaska and port of Dutch Harbor are located 25 km (16 miles) east of Makushin volcano.
Contacts: Matt Haney, Acting Scientist-in-Charge, USGS
mhaney@usgs.gov (907) 786-7497
Jessica Larsen, Acting Coordinating Scientist, UAFGI
jflarsen@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.
Volcano: Makushin (VNUM #311310)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN
Issued: Tuesday, December 15, 2020, 3:59 PM AKST
Source: Alaska Volcano Observatory
Notice Number: 2020/A1284
Location: N 53 deg 53 min W 166 deg 55 min
Elevation: 5906 ft (1800 m)
Area: Aleutians
Volcanic Activity Summary: The previous Aviation Color Code and the Volcano Alert Level change was a false alarm. Activity at Makushin Volcano remains at background levels, thus the Aviation Color Code and the Volcano Alert Level are being decreased to GREEN/NORMAL.
Recent Observations:
[Volcanic cloud height] n/a
[Other volcanic cloud information] n/a
Remarks: Makushin volcano is located on northern Unalaska Island in the eastern Aleutian Islands. Makushin is a broad, ice-capped stratovolcano which rises to an elevation of 6680 feet. The summit caldera, 3 km diameter, is the site of frequent steam and minor ash eruptions; however, no large eruptions have occurred in this century. The community of Unalaska and port of Dutch Harbor are located 25 km (16 miles) east of Makushin volcano.
Contacts: Matt Haney, Acting Scientist-in-Charge, USGS
mhaney@usgs.gov (907) 786-7497
Jessica Larsen, Acting Coordinating Scientist, UAFGI
jflarsen@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.
VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)
WMAK01 PAVO 160059 VONA DTG: 20201216/0059Z VOLCANO: MAKUSHIN 311310 PSN: N5353 W16656 AREA: ALASKA SOURCE ELEV: 5906FT AMSL NOTICE NR: 2020/03 CURRENT COLOUR CODE: GREEN PREVIOUS COLOUR CODE: GREEN SVO: ALASKA VOLCANO OBSERVATORY ACT STS: ONSET: DUR: NIL VA CLD HGT: HGT SOURCE: MOV: CTC: RMK: NXT NOTICE: A NEW VONA WILL BE ISSUED IF COND CHANGE SIGNIFICANTLY OR IF THE COLOR CODE CHANGES NNNN