Karymsky Volcano Volcanic Ash Advisory: POSS ERUPTION OBS AT 20190228/0620Z FL080 EXTD E OBS VA DTG: 28/0850Z to 8000 ft (2400 m)

Thu, 28 Feb 2019, 09:30
09:30 AM | BY: VN
Satellite image of Karymsky volcano on 28 Feb 2019
Satellite image of Karymsky volcano on 28 Feb 2019
Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 8000 ft (2400 m) altitude or flight level 080 and is moving at 15 kts in E direction.
The full report is as follows:

FVFE01 at 09:16 UTC, 28/02/19 from RJTD
VA ADVISORY
DTG: 20190228/0916Z
VAAC: TOKYO
VOLCANO: KARYMSKY 300130
PSN: N5403 E15927
AREA: RUSSIA
SUMMIT ELEV: 1513M
ADVISORY NR: 2019/66
INFO SOURCE: HIMAWARI-8
AVIATION COLOUR CODE: NIL
ERUPTION DETAILS: POSS ERUPTION OBS AT 20190228/0620Z FL080 EXTD E
OBS VA DTG: 28/0850Z
OBS VA CLD: SFC/FL080 N5404 E15928 - N5404 E16003 - N5352 E16050 -
N5349 E16048 - N5400 E16002 - N5401 E15927 MOV E 15KT
FCST VA CLD +6 HR: 28/1450Z SFC/FL080 N5331 E16357 - N5320 E16355 -
N5324 E16154 - N5335 E16149 - N5346 E16249
FCST VA CLD +12 HR: 28/2050Z SFC/FL070 N5304 E16744 - N5309 E16429 -

N5327 E16439 - N5339 E16522 - N5339 E16625
FCST VA CLD +18 HR: NO VA EXP
RMK: SOME PART OF VA OBSCURED BY MET CLOUD.
NXT ADVISORY: 20190228/1200Z=

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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