FVXX21 KNES 190421
VA ADVISORY
DTG: 20120919/0421Z
VAAC: WASHINGTON
VOLCANO: SHEVELUCH 1000-27
PSN: N5638 E16121
AREA: KAMCHATKA
SUMMIT ELEV: 10771 FT (3283 M)
ADVISORY NR: 2012/010
INFO SOURCE: GOES-15. MTSAT. GFS WINDS. HYSPLIT.
ERUPTION DETAILS: ERUPTION AT 17/2319Z
OBS VA DTG: 19/0400Z
OBS VA CLD: SFC/FL290 N4404 W16812 - N4254 W16744
- N4242 W17053 - N4339 W17106 - N4404 W16812 MOV
NE 0KT
FCST VA CLD +6HR: 19/1000Z SFC/FL290 N4942 W16521
- N4931 W16245 - N4559 W16358 - N4559 W16535 -
N4942 W16521
FCST VA CLD +12HR: 19/1600Z SFC/FL290 NO ASH EXP
FCST VA CLD +18HR: 19/2200Z NO ASH EXP
RMK: VA CAN STILL BE SEEN IN SPLIT WINDOW AND
FAINTLY IN VIS AT THE BASE OF THE TROF/NEAR THE
CYCLONE CENTER. EARLY DISSEMINATION OF VAA TO
ACCOUNT FOR CHANGE IN VA DIRECTION...THOUGH
EXPECTING SHEARING/DIFFUSION AND DEPOSITION OF
REMAINING VA OVER NEXT 6-12HRS. ...GALLINA
NXT ADVISORY: WILL BE ISSUED BY 20120919/1015Z
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