FVXX20 KNES 190240 VA ADVISORY DTG: 20170819/0240Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S-0004 W-07739 AREA: ECUADOR-ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2017/309 INFO SOURCE: GOES-13. GFS MODEL WINDS. ERUPTION DETAILS: ONGOING VA AND STEAM EMISSIONS. OBS VA DTG: 18/0215Z OBS VA CLD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL150 045/10-15KT. FCST VA CLD +6HR: 19/0830Z. FCST VA CLD +12HR: 19/1430Z. FCST VA CLD +18HR: 19/2030Z. RMK: 557 WW FOR WASHINGTON VAAC. ASH NOT VISIBLE ON LATEST METSAT IMAGERY. ...MIKHAYLEVSKIY NXT ADVISORY: WILL BE ISSUED BY 20170819/0900Z.