FVXX22 KNES 081416 VA ADVISORY DTG: 20210508/1416Z VAAC: WASHINGTON VOLCANO: POPOCATEPETL 341090 PSN: N1901 W09837 AREA: MEXICO SUMMIT ELEV: 17802 FT (5426 M) ADVISORY NR: 2021/430 INFO SOURCE: GOES-16. WEBCAM. NWP MODELS. RADIOSONDE. ERUPTION DETAILS: OCCL VA EMS OBS. OBS VA DTG: 08/1351Z OBS VA CLD: SFC/FL190 N1908 W09826 - N1900 W09825 - N1859 W09835 - N1901 W09837 - N1908 W09826 MOV E 5KT FCST VA CLD +6HR: 08/2000Z SFC/FL190 N1914 W09807 - N1901 W09805 - N1859 W09836 - N1902 W09838 - N1914 W09807 FCST VA CLD +12HR: 09/0200Z NO VA EXP FCST VA CLD +18HR: 09/0800Z NO VA EXP RMK: OCCL SLOW MOV VA EMS OBS IN STLT AND WEBCAM MOV ENE OF SUMMIT. FL AND WINDS BASED ON RADIOSONDE. FCST BASED ON NWP MODEL GDNC. ...JLEVINE NXT ADVISORY: WILL BE ISSUED BY 20210508/2015Z