FVXX24 KNES 211255 VA ADVISORY DTG: 20190921/1255Z VAAC: WASHINGTON VOLCANO: POPOCATEPETL 341090 PSN: N1901 W09837 AREA: MEXICO SUMMIT ELEV: 17802 FT (5426 M) ADVISORY NR: 2019/877 INFO SOURCE: GOES-EAST. WEB CAM. NWP MODELS. VOLCAT. ERUPTION DETAILS: CONT VA EMS OBS OBS VA DTG: 21/1220Z OBS VA CLD: SFC/FL220 N1917 W10003 - N1904 W09837 - N1847 W10000 - N1917 W10003 MOV W 15-20KT FCST VA CLD +6HR: 21/1830Z SFC/FL220 N1917 W10004 - N1903 W09835 - N1846 W10002 - N1917 W10004 FCST VA CLD +12HR: 22/0030Z SFC/FL220 N1918 W10004 - N1904 W09836 - N1847 W10002 - N1918 W10004 FCST VA CLD +18HR: 22/0630Z SFC/FL220 N1918 W10004 - N1904 W09835 - N1846 W10002 - N1918 W10004 RMK: CONT VA EMS OBS MOV W FM SUMMIT TO NEAR 25NM FM SUMMIT. VA FCST TO CONT W MOV THRU T+18HRS BEFORE DISP. ...FISHER NXT ADVISORY: WILL BE ISSUED BY 20190921/1900Z