Volcano news: Karymsky
Karymsky Volcano Volcanic Ash Advisory: VA AT 20210102/0235Z FL160 EXTD SE MOV 15KT REPORTED to 16000 ft (4900 m)

The full report is as follows:
FVFE01 at 03:10 UTC, 02/01/21 from RJTD
VA ADVISORY
DTG: 20210102/0310Z
VAAC: TOKYO
VOLCANO: KARYMSKY 300130
PSN: N5403 E15927
AREA: RUSSIA
SUMMIT ELEV: 1513M
ADVISORY NR: 2021/5
INFO SOURCE: HIMAWARI-8 UHPP
AVIATION COLOUR CODE: NIL
ERUPTION DETAILS: VA AT 20210102/0235Z FL160 EXTD SE MOV 15KT
REPORTED
OBS VA DTG: 02/0240Z
OBS VA CLD: SFC/FL160 N5404 E15926 - N5409 E15935 - N5406 E15939 -
N5357 E15934 - N5359 E15926 MOV SE 15KT
FCST VA CLD +6 HR: 02/0840Z SFC/FL160 N5310 E16134 - N5237 E16104 -
N5232 E16002 - N5332 E16048
FCST VA CLD +12 HR: 02/1440Z SFC/FL170 N5243 E16351 - N5145 E16252 -
N5240 E16214 - N5117 E16016 - N5240 E16116 - N5335 E16054 - N5353
E16203
FCST VA CLD +18 HR: NO VA EXP
RMK: NIL
NXT ADVISORY: 20210102/0600Z=
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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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