FVXX21 KNES 050854 VA ADVISORY DTG: 20211005/0854Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0004 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2021/858 INFO SOURCE: GOES-16. NWP MODELS. ERUPTION DETAILS: PSBL CONTG VA EMS. OBS VA DTG: 05/0830Z OBS VA CLD: SFC/FL160 S0002 W07740 - S0005 W07739 - S0013 W07756 - S0008 W07759 - S0002 W07740 MOV SW 15KT FCST VA CLD +6HR: 05/1430Z SFC/FL160 S0002 W07739 - S0004 W07739 - S0011 W07758 - S0004 W07759 - S0002 W07739 FCST VA CLD +12HR: 05/2030Z NO VA EXP FCST VA CLD +18HR: 06/0230Z NO VA EXP RMK: PSBL VA OBS IN SAT AMONG MET CLD OBSCN MOV WSW FM SUMMIT. OBS VA FL ESTD FM NWP MDLS. FL MVMT FCST TO VEER SLIGHTLY TO W THRU T+6 HRS. ...CLARK NXT ADVISORY: WILL BE ISSUED BY 20211005/1500Z