Semisopochnoi Volcano Volcanic Ash Advisory: OCNL ERUPTIONS. to 12000 ft (3700 m)

Wed, 29 Sep 2021, 09:45
09:45 AM | BY: VN
Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Anchorage warned about a volcanic ash plume that rose up to estimated 12000 ft (3700 m) altitude or flight level 120 and is moving at 35 kts in E direction.
The full report is as follows:

FVAK21 at 09:35 UTC, 29/09/21 from PAWU
VAAAK1
VA ADVISORY

DTG: 20210929/0935Z

VAAC: ANCHORAGE

VOLCANO: SEMISOPOCHNOI 311060

PSN: N5156 E17935

AREA: ALEUTIAN ISLANDS

SUMMIT ELEV: 4006 FT [1221 M]

ADVISORY NR: 2021/148

INFO SOURCE: HIMAWARI/GOES 17/WEBICORDER

AVIATION COLOR CODE: ORANGE

ERUPTION DETAILS: OCNL ERUPTIONS.

OBS VA DTG: 29/0935Z

OBS VA CLD: SFC/FL120 N5306 W17407 - N5214 W17417 - N5149 E17932
- N5209 E17932 - N5306 W17407 MOV E 35KT.

FCST VA CLD +6HR: 29/1535Z SFC/FL120 N5306 W17407 - N5213 W17415
- N5148 E17935 - N5209 E17933 - N5306 W17407 - N5306 W17407.

FCST VA CLD +12HR: 29/2135Z NO VA EXP.

FCST VA CLD +18HR: 30/0335Z NO VA EXP.

RMK: OCNL ERUPTIVE ACTIVITY PRSTS AT SEMISOPOCHNOI. VA SIGNALS IN SATELLITE
IMAGERY HAVE BECM OBSC BY METEOROLOGICAL CLDS. WEBICORDER DATA SUGGESTS MOST
RECENT ERUPTION MAY HAVE OCCURRED AROUND 20210929/0630Z.

NXT ADVISORY: WILL BE ISSUED BY 20210929/1535Z

JAM SEP 2021 AAWU

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