Karymsky Volcano Volcanic Ash Advisory: VA AT 20200925/2230Z FL060 EXTD SE OBS VA DTG: 25/2230Z to 6000 ft (1800 m)

Fri, 25 Sep 2020, 23:15
23:15 PM | BY: VN
Satellite image of Karymsky volcano on 25 Sep 2020
Satellite image of Karymsky volcano on 25 Sep 2020
Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 6000 ft (1800 m) altitude or flight level 060 and is moving at 20 kts in SE direction.
The full report is as follows:

FVFE01 at 23:08 UTC, 25/09/20 from RJTD
VA ADVISORY
DTG: 20200925/2308Z
VAAC: TOKYO
VOLCANO: KARYMSKY 300130
PSN: N5403 E15927
AREA: RUSSIA
SUMMIT ELEV: 1513M
ADVISORY NR: 2020/66
INFO SOURCE: HIMAWARI-8
AVIATION COLOUR CODE: NIL
ERUPTION DETAILS: VA AT 20200925/2230Z FL060 EXTD SE
OBS VA DTG: 25/2230Z
OBS VA CLD: SFC/FL060 N5404 E15927 - N5356 E15940 - N5352 E15936 -
N5402 E15926 MOV SE 20KT
FCST VA CLD +6 HR: 26/0430Z SFC/FL060 N5252 E16029 - N5205 E16002 -
N5217 E15945 - N5301 E15951 - N5403 E15926
FCST VA CLD +12 HR: 26/1030Z SFC/FL060 N5307 E16120 - N5227 E16148 -

N5050 E16031 - N5058 E16012 - N5230 E16031 - N5403 E15926
FCST VA CLD +18 HR: NO VA EXP
RMK: NIL
NXT ADVISORY: 20200926/0300Z=

Previous news

Wed, 2 Sep 2020, 06:00
KVERT reported that explosions at Karymsky were last recorded on 29 July. A thermal anomaly was weak for most of August and undetectable after 21 August. The Aviation Color Code was lowered to Green (the lowest level on a four-color scale) on 3 September. ... Read all
Wed, 26 Aug 2020, 06:00
KVERT reported that a thermal anomaly over Karymsky was identified in satellite images on 18 and 21 August; weather clouds prevented views of the volcano on the other days during 14-28 August. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). ... Read all
Show more

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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