FVXX21 KNES 141017 VA ADVISORY DTG: 20210814/1017Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0005 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2021/639 INFO SOURCE: GOES-16. WEBCAM. NWP MODELS. ERUPTION DETAILS: ONGOING VA EMS. OBS VA DTG: 14/0950Z OBS VA CLD: SFC/FL150 N0004 W07755 - S0004 W07738 - S0005 W07738 - S0004 W07757 - N0004 W07755 MOV NW 10KT FCST VA CLD +6HR: 14/1600Z SFC/FL150 N0005 W07754 - S0002 W07738 - S0005 W07742 - S0004 W07756 - N0005 W07754 FCST VA CLD +12HR: 14/2200Z NO VA EXP FCST VA CLD +18HR: 15/0400Z NO VA EXP RMK: INTERMITTENT VA EMS EVIDENT IN WEB CAM AND VOLCAT IMAGERY. VA MOV TO NW OF SUMMIT. ...LEE NXT ADVISORY: WILL BE ISSUED BY 20210814/1615Z