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Semisopochnoi Volcano Volcanic Ash Advisory: PERIODIC VA ERUPTIONS CONTINUE. to 12000 ft (3700 m)

Tue, 21 Sep 2021, 12:30 | 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 15 kts in WNW direction.
The full report is as follows:

FVAK21 at 12:20 UTC, 21/09/21 from PAWU
VAAAK1
VA ADVISORY

DTG: 20210921/1220Z

VAAC: ANCHORAGE

VOLCANO: SEMISOPOCHNOI 311060

PSN: N5156 E17935

AREA: ALEUTIAN ISLANDS

SUMMIT ELEV: 4006 FT [1221 M]

ADVISORY NR: 2021/131

INFO SOURCE: HIMAWARI

AVIATION COLOR CODE: ORANGE

ERUPTION DETAILS: PERIODIC VA ERUPTIONS CONTINUE.

OBS VA DTG: 21/1220Z

OBS VA CLD: SFC/FL120 N5208 W17959 - N5139 E17929 - N5247 E17424
- N5405 E17426 - N5208 W17959 MOV WNW 15KT.

FCST VA CLD +6HR: 21/1820Z SFC/FL120 N5214 E17943 - N5132 E17948
- N5215 E17340 - N5416 E17345 - N5214 E17943 - N5214 E17943.

FCST VA CLD +12HR: 22/0020Z NO VA EXP.

FCST VA CLD +18HR: 22/0620Z NO VA EXP.

RMK: NONE.

NXT ADVISORY: WILL BE ISSUED BY 20210921/1820Z

BH SEP 2021 AAWU

Previous news

Tue, 21 Sep 2021, 04:45

Semisopochnoi volcano (Aleutian Islands): ash emissions decreased, Volcanic Alert Level lowered to Orange again

TROPOMI SO2 product showing a robust gas plume traveling south-southeast from Semisopochnoi volcano on 19 September (image: AVO)
The activity at the volcano continues to be elevated. ... Read all
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Stratovolcano 1221 m / 4,006 ft
United States, Aleutian Islands, 51.93°N / 179.58°E
Current status: normal or dormant (1 out of 5) Semisopochnoi volcano eruptions:
2021, 2020, 2019, 2018, 1987
Typical eruption style
unspecified