Semisopochnoi Volcano Volcanic Ash Advisory: OCCASIONAL LOW LEVEL ERUPTIONS. to 7000 ft (2100 m)

ven., 29 oct. 2021, 01:15
01:15 AM | AUTEUR : VN
Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Anchorage warned about a volcanic ash plume that rose up to estimated 7000 ft (2100 m) altitude or flight level 070 and is moving at 25 kts in SSE direction.
The full report is as follows:

FVAK21 at 01:13 UTC, 29/10/21 from PAWU
VAAAK1
VA ADVISORY

DTG: 20211029/0100Z

VAAC: ANCHORAGE

VOLCANO: SEMISOPOCHNOI 311060

PSN: N5156 E17935

AREA: ALEUTIAN ISLANDS

SUMMIT ELEV: 4006 FT [1221 M]

ADVISORY NR: 2021/175

INFO SOURCE: HIMAWARI/WEBCAM

AVIATION COLOR CODE: ORANGE

ERUPTION DETAILS: OCCASIONAL LOW LEVEL ERUPTIONS.

OBS VA DTG: 29/0100Z

OBS VA CLD: SFC/FL070 N5205 E17948 - N5027 W17854 - N5014 E17927
- N5159 E17909 - N5205 E17948 MOV SSE 25KT

FCST VA CLD +6HR: 29/0700Z SFC/FL070 N5205 E17948 - N5019 W17825
- N4955 W17956 - N5153 E17910 - N5205 E17948 - N5205 E17948

FCST VA CLD +12HR: 29/1300Z NO VA EXP

FCST VA CLD +18HR: 29/1900Z NO VA EXP

RMK: OCCASIONAL LOW LEVEL VA EMISSIONS SEEN ON HIMAWARI ASH AND DUST
RGB IMAGERY AS WELL AS ON NEARBY WEBCAMS. VA NOT RISING MUCH ABOVE
THE TOPS OF CLOUDS ESTIMATED AT FL070...NS

NXT ADVISORY: WILL BE ISSUED BY 20211029/0700Z

Actualités précédentes

mer., 27 oct. 2021, 06:00
AVO reported that eruptive activity at Semisopochnoi's North Cerberus crater continued during 26 October-2 November. Daily tremor and minor explosions were detected in seismic and infrasound data. Although weather clouds often prevented webcam and satellite views, intermittent, low-level ash emissions were visible during clear views, rising as high as 3.7 km (12,000 ft) a.s.l. and dissipating quickly. ... Read all
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