FVFE01 RJTD 191036
VAAAK1
VA ADVISORY

DTG: 20211119/1030Z

VAAC: ANCHORAGE

VOLCANO: SEMISOPOCHNOI 311060

PSN: N5156 E17935

AREA: ALEUTIAN ISLANDS

SUMMIT ELEV: 4006 FT (1221 M)

ADVISORY NR: 2021/194

INFO SOURCE: HIMAWARI/GOES 17/WEBICORDER

AVIATION COLOR CODE: ORANGE

ERUPTION DETAILS: OCNL ERUPTIONS.

OBS VA DTG: 19/1030Z

OBS VA CLD: SFC/FL080 N5248 E17810 - N5205 E17955 - N5146 E17933
- N5223 E17744 - N5248 E17810 MOV WNW 15KT

FCST VA CLD +6HR: 19/1630Z SFC/FL080 N5225 E17730 - N5204 E17948
- N5124 E17936 - N5133 E17734 - N5225 E17730

FCST VA CLD +12HR: 19/2230Z SFC/FL080 N5206 E17945 - N5038
W17931 - N5006 E17831 - N5115 E17630 - N5134 E17744 - N5206 E17945

FCST VA CLD +18HR: 20/0430Z SFC/FL080 N5203 E17947 - N4936
W17741 - N4843 W17941 - N4948 E17728 - N5022 E17817 - N5003
W17928 - N5149 E17917 - N5203 E17947 - N5203 E17947

RMK: METEOROLOGICAL CLDS HAVE MOVED FAR ENOUGH AWAY FROM THE VOLCANO
SUMMIT
THAT A VA SIGNAL IS OBSERVED. THIS SIGNAL EMERGED ALG WITH AN UPTICK
IN SEISMIC
WEBICORDER DATA. TRANSPORT WINDS INITIALLY OUT OF THE SE BECMG MORE O
UT OF THE
N IN COMING HRS AS A LOW PRES SYSTEM TRACKS INTO THE CENTRAL ALUTNS F
M THE PAC
SIDE. ...JAM

NXT ADVISORY: WILL BE ISSUED BY 20211119/1630Z=