FVXX20 KNES 230512 VA ADVISORY DTG: 20210623/0512Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0004 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2021/480 INFO SOURCE: GOES-16. WEBCAM. NWP MODELS. ERUPTION DETAILS: CONTG OCNL VA EMS. OBS VA DTG: 23/0450Z OBS VA CLD: SFC/FL150 N0006 W07755 - S0002 W07738 - S0004 W07740 - S0001 W07758 - N0006 W07755 MOV NW 10KT FCST VA CLD +6HR: 23/1100Z SFC/FL150 N0009 W07756 - S0002 W07738 - S0004 W07740 - N0001 W07801 - N0009 W07756 FCST VA CLD +12HR: 23/1700Z NO VA EXP FCST VA CLD +18HR: 23/2300Z NO VA EXP RMK: OCNL V EMS OBS IN PAST FEW HRS MOV WNW UP TO 20 NM FM SUMMIT BEFORE DSIPTG. WEBCAM SHOWS CONTG STEAM AND GAS EMS WHICH COULD INCLUDE VA. LTLCG FCST IN FL WIND THRU T+6 HRS. ...CLARK NXT ADVISORY: WILL BE ISSUED BY 20210623/1115Z