FVXX20 KNES 061053 VA ADVISORY DTG: 20210306/1053Z VAAC: WASHINGTON VOLCANO: POPOCATEPETL 341090 PSN: N1901 W09837 AREA: MEXICO SUMMIT ELEV: 17802 FT (5426 M) ADVISORY NR: 2021/257 INFO SOURCE: GOES-16. NWP MODELS. VOLCAT. ERUPTION DETAILS: NEW VA EM OBS. OBS VA DTG: 06/1041Z OBS VA CLD: SFC/FL210 N1902 W09837 - N1902 W09824 - N1852 W09828 - N1901 W09837 - N1902 W09837 MOV SE 0KT FCST VA CLD +6HR: 06/1630Z SFC/FL210 N1902 W09837 - N1853 W09808 - N1841 W09817 - N1901 W09837 - N1902 W09837 FCST VA CLD +12HR: 06/2230Z NO VA EXP FCST VA CLD +18HR: 07/0430Z NO VA EXP RMK: VA OBS EXT 11 NM ESE FM SUMMIT. OBS VA FL BASED ON VOLCAT ALERT AND NWP MDLS. FL WINDS EXP TO PERSIST THRU T+6 HRS. ...CLARK NXT ADVISORY: WILL BE ISSUED BY 20210306/1700Z