FVXX21 KNES 172040 VA ADVISORY DTG: 20210917/2040Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0005 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2021/789 INFO SOURCE: GOES-16. WEBCAM. NWP MODELS. ERUPTION DETAILS: VA ERUPTION OBS IN WEBCAM OBS VA DTG: 17/2010Z OBS VA CLD: SFC/FL150 N0007 W07753 - S0004 W07740 - S0005 W07740 - S0002 W07759 - N0007 W07753 MOV NW 15KT FCST VA CLD +6HR: 18/0200Z SFC/FL150 N0007 W07753 - S0005 W07738 - S0005 W07739 - S0002 W07759 - N0007 W07753 FCST VA CLD +12HR: 18/0800Z NO VA EXP FCST VA CLD +18HR: 18/1400Z NO VA EXP RMK: VA ERUPTION OBS IN WEBCAM AT 1946Z. POSS LGT VA OBS IN WEBCAM TO NW OF SUMMIT, BUT WX CLD COVERS MUCH VIS FM STLT. FL AND FCST BASED ON NWP. ...JLEVINE NXT ADVISORY: WILL BE ISSUED BY 20210918/0245Z