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Klyuchevskoy Volcano Volcanic Ash Advisory: VA AT 20200421/0450Z FL180 EXTD S OBS VA DTG: 21/0450Z to 18000 ft (5500 m)

Tue, 21 Apr 2020, 05:45
05:45 AM | BY: VN
Satellite image of Klyuchevskoy volcano on 21 Apr 2020
Satellite image of Klyuchevskoy volcano on 21 Apr 2020
Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 18000 ft (5500 m) altitude or flight level 180 and is moving at 20 kts in S direction.
The full report is as follows:

FVFE01 at 05:36 UTC, 21/04/20 from RJTD
VA ADVISORY
DTG: 20200421/0536Z
VAAC: TOKYO
VOLCANO: KLYUCHEVSKOY 300260
PSN: N5603 E16039
AREA: RUSSIA
SUMMIT ELEV: 4754M
ADVISORY NR: 2020/151
INFO SOURCE: HIMAWARI-8
AVIATION COLOUR CODE: NIL
ERUPTION DETAILS: VA AT 20200421/0450Z FL180 EXTD S
OBS VA DTG: 21/0450Z
OBS VA CLD: SFC/FL180 N5603 E16037 - N5603 E16043 - N5515 E16030 -
N5525 E16024 MOV S 20KT
FCST VA CLD +6 HR: 21/1050Z SFC/FL180 N5151 E16410 - N5258 E16032 -
N5441 E16002 - N5604 E16040 - N5329 E16149
FCST VA CLD +12 HR: 21/1650Z SFC/FL180 N5122 E16341 - N4859 E17050 -

N4952 E16510 - N5215 E15939 - N5403 E15930 - N5557 E16039
FCST VA CLD +18 HR: NO VA EXP
RMK: VA OF PREVIOUS VAA HAS DISSIPATED IN SATELLITE IMAGERY. NEW VA

OBS IN SATELLITE IMAGERY.
NXT ADVISORY: 20200421/0900Z=

Previous news


NASA photo of the eruption of Klyuchevsky volcano on 30 September, 1994, the volcano's largest explosion in 40 years. The large
NASA photo of the eruption of Klyuchevsky volcano on 30 September, 1994, the volcano's largest explosion in 40 years. The large

Background:

Kliuchevskoi is Kamchatka's highest and most active volcano.  Since its origin about 6000 years ago, the beautifully symmetrical, 4835-m-high basaltic stratovolcano has produced frequent moderate-volume explosive and effusive eruptions without major periods of inactivity.  Kliuchevskoi rises above a saddle NE of sharp-peaked Kamen volcano and lies SE of the broad Ushkovsky massif.  More than 100 flank eruptions have occurred at Kliuchevskoi during the past roughly 3000 years, with most lateral craters and cones occurring along radial fissures between the unconfined NE-to-SE flanks of the conical volcano between 500 m and 3600 m elevation.  The morphology of its 700-m-wide summit crater has been frequently modified by historical eruptions, which have been recorded since the late-17th century.  Historical eruptions have originated primarily from the summit crater, but have also included numerous major explosive and effusive eruptions from flank craters.


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Source: Klyuchevsky information by the GVP (Smithsonian Institution)



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