FVXX22 KNES 170818
VA ADVISORY
DTG: 20210917/0818Z

VAAC: WASHINGTON

VOLCANO: POPOCATEPETL 341090
PSN: N1901 W09837

AREA: MEXICO

SUMMIT ELEV: 17802 FT (5426 M)

ADVISORY NR: 2021/564

INFO SOURCE: GOES-16. WEBCAM. NWP MODELS. 

ERUPTION DETAILS: CONTG FRQ VA EMS.

OBS VA DTG: 17/0806Z

OBS VA CLD: SFC/FL200 N1925 W09845 - N1914 W09842
- N1912 W09853 - N1924 W09853 - N1925 W09845 MOV
NW 10KT SFC/FL220 N1916 W09904 - N1902 W09838 -
N1901 W09838 - N1904 W09910 - N1916 W09904 MOV NW
10KT SFC/FL240 N1901 W09838 - N1859 W09837 -
N1838 W09940 - N1859 W09945 - N1901 W09838 MOV W
10KT 

FCST VA CLD +6HR: 17/1400Z SFC/FL200 NO VA
EXPSFC/FL220 N1921 W09938 - N1903 W09836 - N1901
W09838 - N1859 W09941 - N1921 W09938 SFC/FL240
N1902 W09838 - N1859 W09835 - N1819 W10041 -
N1855 W10048 - N1902 W09838 

FCST VA CLD +12HR: 17/2000Z SFC/FL220 NO VA
EXPSFC/FL240 N1902 W09837 - N1859 W09834 - N1810
W10038 - N1855 W10047 - N1902 W09837 

FCST VA CLD +18HR: 18/0200Z SFC/FL240 N1902
W09837 - N1858 W09835 - N1809 W10039 - N1855
W10047 - N1902 W09837 

RMK: VA OBS FANNING OUT N TO WSW FM SUMMIT.
REMNANT VA FM EARLIER EM TO FL240 NOW 65 NM WSW
FM SUMMIT. FL MVMT AT ALL LVLS FCST TO TURN TO
WSW BY T+12 HRS. ...CLARK

NXT ADVISORY: WILL BE ISSUED BY 20210917/1415Z