FVXX20 KNES 202332 VA ADVISORY DTG: 20210520/2332Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0004 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2021/377 INFO SOURCE: GOES-16. NWP MODELS. GEOPHYSICAL INST. ERUPTION DETAILS: POSSIBLE VA EM OBS VA DTG: 20/2250Z OBS VA CLD: SFC/FL150 N0002 W07743 - S0004 W07740 - S0005 W07740 - S0002 W07747 - N0002 W07743 MOV NW 5KT FCST VA CLD +6HR: 21/0500Z SFC/FL150 S0003 W07749 - S0005 W07740 - S0005 W07739 - S0008 W07748 - S0003 W07749 FCST VA CLD +12HR: 21/1100Z NO VA EXP FCST VA CLD +18HR: 21/1700Z NO VA EXP RMK: VA EM NOT SEEN ON STLT IMAGERY. VO RPRTS VA AROUND FL150 MOV NW. VA HEIGHT AND FRCST BASED ON VO RPRT AND MODEL GUIDANCE. ...KIM NXT ADVISORY: WILL BE ISSUED BY 20210521/0530Z