Karymsky Volcano Volcanic Ash Advisory: VA AT 20201212/2230Z FL130 EXTD N OBS VA DTG: 12/2230Z to 13000 ft (4000 m)

Sat, 12 Dec 2020, 23:15
23:15 PM | BY: VN
Satellite image of Karymsky volcano on 12 Dec 2020
Satellite image of Karymsky volcano on 12 Dec 2020
Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 13000 ft (4000 m) altitude or flight level 130 and is moving at 15 kts in N direction.
The full report is as follows:

FVFE01 at 23:09 UTC, 12/12/20 from RJTD
VA ADVISORY
DTG: 20201212/2309Z
VAAC: TOKYO
VOLCANO: KARYMSKY 300130
PSN: N5403 E15927
AREA: RUSSIA
SUMMIT ELEV: 1513M
ADVISORY NR: 2020/119
INFO SOURCE: HIMAWARI-8
AVIATION COLOUR CODE: NIL
ERUPTION DETAILS: VA AT 20201212/2230Z FL130 EXTD N
OBS VA DTG: 12/2230Z
OBS VA CLD: SFC/FL130 N5429 E15921 - N5439 E15925 - N5435 E15944 -
N5425 E15942 MOV N 15KT
FCST VA CLD +6 HR: 13/0430Z SFC/FL130 N5556 E15920 - N5431 E15903 -
N5447 E15829 - N5605 E15842
FCST VA CLD +12 HR: 13/1030Z SFC/FL120 N5706 E15847 - N5612 E15804 -

N5427 E15818 - N5531 E15733 - N5714 E15733 - N5737 E15804
FCST VA CLD +18 HR: NO VA EXP
RMK: SOME PART OF VA OBSCURED BY MET CLOUD.
NXT ADVISORY: 20201213/0300Z=

Previous news

Background:

Karymsky, the most active volcano of  Kamchatka's eastern volcanic zone, is a symmetrical stratovolcano constructed within a 5-km-wide caldera that formed during the early Holocene.  The caldera cuts the south side of the Pleistocene Dvor volcano and is located outside the north margin of the large mid-Pleistocene Polovinka caldera, which contains the smaller Akademia Nauk and Odnoboky calderas. 
Most seismicity preceding Karymsky eruptions originated beneath Akademia Nauk caldera, which is located immediately south of Karymsky volcano.  The caldera enclosing Karymsky volcano formed about 7600-7700 radiocarbon years ago; construction of the Karymsky stratovolcano began about 2000 years later.  The latest eruptive period began about 500 years ago, following a 2300-year quiescence.  Much of the cone is mantled by lava flows less than 200 years old.  Historical eruptions have been vulcanian or vulcanian-strombolian with moderate explosive activity and occasional lava flows from the summit crater.


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Source: GVP, Smithsonian Institution


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