FVXX22 KNES 171442
VA ADVISORY
DTG: 20210817/1442Z

VAAC: WASHINGTON

VOLCANO: POPOCATEPETL 341090
PSN: N1901 W09837

AREA: MEXICO

SUMMIT ELEV: 17802 FT (5426 M)

ADVISORY NR: 2021/518

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

ERUPTION DETAILS: INTMT VA EMS.

OBS VA DTG: 17/1431Z

OBS VA CLD: SFC/FL190 N1903 W09850 - N1902 W09837
- N1901 W09837 - N1856 W09849 - N1903 W09850 MOV
W 10KT SFC/FL210 N1905 W09844 - N1902 W09837 -
N1901 W09837 - N1902 W09844 - N1905 W09844 MOV W
15KT 

FCST VA CLD +6HR: 17/2030Z SFC/FL190 N1902 W09837
- N1901 W09837 - N1846 W09913 - N1901 W09915 -
N1902 W09837 SFC/FL210 NO VA EXP

FCST VA CLD +12HR: 18/0230Z SFC/FL190 N1909
W09914 - N1902 W09837 - N1901 W09837 - N1852
W09914 - N1909 W09914 

FCST VA CLD +18HR: 18/0830Z NO VA EXP

RMK: VA EMS OBSD AT 1259Z AND 1404Z ON WEBCAM.
FLS ESTD FM WEBCAM AND 12Z MMMX RADIOSONDE. VA
OBSD TO 12NM W OF SUMMIT AND 6 NM WNW OF SUMMIT.
NWP MDLS FCST FURTHER VA EMS TO MOV WSW-W THRU
T+12HR. ...HOSLEY

NXT ADVISORY: WILL BE ISSUED BY 20210817/2045Z