FVXX23 KNES 200921 VA ADVISORY DTG: 20211220/0921Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0004 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2021/1160 INFO SOURCE: GOES-16. WEBCAM. NWP MODELS. ERUPTION DETAILS: PSBL CONTG VA EMS. OBS VA DTG: 20/0900Z OBS VA CLD: SFC/FL150 S0002 W07759 - S0003 W07740 - S0005 W07739 - S0009 W07759 - S0002 W07759 MOV W 10KT FCST VA CLD +6HR: 20/1500Z NO VA EXP FCST VA CLD +12HR: 20/2100Z NO VA EXP FCST VA CLD +18HR: 21/0300Z NO VA EXP RMK: VA NOT OBS IN SAT OR WEBCAM WITH MET CLD OBSCN OF SUMMIT. CONTG VA EMS PSBL BASED ON RECENT ACT. OBS VA AREA ESTD FM NWP MDLS AND PREV VAA. ...CLARK NXT ADVISORY: WILL BE ISSUED BY 20211220/1515Z