Semisopochnoi Volcano Volcanic Ash Advisory: OCNL ERUPTIONS. to 10000 ft (3000 m)

Sun, 26 Sep 2021, 11:15
11:15 AM | BY: VN
Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Anchorage warned about a volcanic ash plume that rose up to estimated 10000 ft (3000 m) altitude or flight level 100 and is moving at 35 kts in NNW direction.
The full report is as follows:

FVAK23 at 11:05 UTC, 26/09/21 from PAWU
VAAAK3
VA ADVISORY

DTG: 20210926/1105Z

VAAC: ANCHORAGE

VOLCANO: SEMISOPOCHNOI 311060

PSN: N5156 E17935

AREA: ALEUTIAN ISLANDS

SUMMIT ELEV: 4006 FT [1221 M]

ADVISORY NR: 2021/145

INFO SOURCE: WEBCAM/WEBICORDER

AVIATION COLOR CODE: ORANGE

ERUPTION DETAILS: OCNL ERUPTIONS.

OBS VA DTG: 26/1105Z

OBS VA CLD: SFC/FL100 N5437 E17922 - N5154 E17952 - N5150 E17929
- N5405 E17647 - N5437 E17922 MOV NNW 35KT.

FCST VA CLD +6HR: 26/1705Z SFC/FL100 N5607 E17935 - N5154 E17957
- N5150 E17926 - N5522 E17604 - N5607 E17935.

FCST VA CLD +12HR: 26/2305Z SFC/FL100 N5626 E17917 - N5307
W17706 - N5145 E17942 - N5206 E17917 - N5429 E17859 - N5541
E17504 - N5626 E17917 - N5626 E17917.

FCST VA CLD +18HR: 27/0505Z NO VA EXP.

RMK: NO VA SIGNAL NOTED IN SATELLITE IMAGERY DUE TO WDSPRDG METEOROLOGICAL
CLDS FM OCFNT. HOWEVER ERUPTIVE ACTIVITY W/VA WAS OBS IN WEBCAMERAS UNTIL
LOSS OF DAYLIGHT AROUND 20210926/0600Z. SEISMIC ACTIVITY PER WEBICORDER HAS
NOT CHANGED APPRECIABLY AND THUS BELIEVE ERUPTIONS ARE STILL OCCURING. STG
SOUTHERLY TRANSPORT WINDS LOOK TO SHIFT AND BECM MORE OUT OF THE SOUTHWEST
W/FROPA.

NXT ADVISORY: WILL BE ISSUED BY 20210926/1705Z

JAM SEP 2021 AAWU

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