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Semisopochnoi Volcano Volcanic Ash Advisory: ERUPTED AT APPROXIMATELY 20211021/2115Z. to 8000 ft (2400 m)

ven., 22 oct. 2021, 00:30
00:30 AM | AUTEUR : VN
Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Anchorage warned about a volcanic ash plume that rose up to estimated 8000 ft (2400 m) altitude or flight level 080 and is moving at 40 kts in SE direction.
The full report is as follows:

FVAK21 at 00:26 UTC, 22/10/21 from PAWU
VAAAK1
VA ADVISORY

DTG: 20211022/0020Z

VAAC: ANCHORAGE

VOLCANO: SEMISOPOCHNOI 311060

PSN: N5156 E17935

AREA: ALEUTIAN ISLANDS

SUMMIT ELEV: 4006 FT [1221 M]

ADVISORY NR: 2021/169

INFO SOURCE: HIMAWARI/WEBCAM.

AVIATION COLOR CODE: ORANGE

ERUPTION DETAILS: ERUPTED AT APPROXIMATELY 20211021/2115Z.

OBS VA DTG: 22/0020Z

OBS VA CLD: SFC/FL080 N5205 E17943 - N5100 W17627 - N5019 W17730
- N5150 E17925 - N5205 E17943 MOV SE 40KT

FCST VA CLD +6HR: 22/0620Z SFC/FL080 N5205 E17943 - N5100 W17628
- N5021 W17731 - N5149 E17926 - N5205 E17943 - N5205 E17943

FCST VA CLD +12HR: 22/1220Z NO VA EXP

FCST VA CLD +18HR: 22/1820Z NO VA EXP

RMK: VOLCANO ERUPTED AT APPROXIMATELY 2115Z PER SATELLITE AND WEBCAM
IMAGERY. A FAINT STREAM OF VA EMISSIONS CAN STILL BE OBSERVED ON
HIMAWARI ASH AND DUST RGB IMAGERY AS WELL AS ON NEARBY WEBCAMS...NS

NXT ADVISORY: WILL BE ISSUED BY 20211022/0620Z

Actualités précédentes

mer., 20 oct. 2021, 06:00

Semisopochnoi volcano (Aleutian Islands, USA) - Smithsonian / USGS Weekly Volcanic Activity Report for 20 October-26 October 2021 (Continuing Activity)

AVO reported that eruptive activity at Semisopochnoi's North Cerberus crater continued during 19-26 October. Tremor and multiple minor explosions were detected daily in seismic and infrasound data. Although weather clouds often prevented webcam and satellite views, intermittent, low-level ash emissions were visible during clear weather rising to altitudes up to 3 km (10,000 ft a.s.l.); the farthest plume drifted 250 km on 19 October. ... Read all
Montrer plus
Stratovolcano 1221 m / 4,006 ft
United States, Aleutian Islands, 51.93°N / 179.58°E
Condition actuelle: en vigilance - niveau agité (2 sur 5) Eruptions du volcan Semisopochnoi:
2021, 2020, 2019, 2018, 1987
Style éruptif tipique
unspecified
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