FVXX23 KNES 301153 VA ADVISORY DTG: 20210530/1153Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0005 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2021/400 INFO SOURCE: WEBCAM. NWP MODELS. ERUPTION DETAILS: POSS VA CLDS. OBS VA DTG: 30/1110Z OBS VA CLD: SFC/FL150 S0000 W07756 - S0004 W07740 - S0005 W07739 - S0005 W07756 - S0000 W07756 MOV W 10KT FCST VA CLD +6HR: 30/1700Z SFC/FL150 S0000 W07756 - S0004 W07739 - S0005 W07739 - S0005 W07756 - S0000 W07756 FCST VA CLD +12HR: 30/2300Z NO VA EXP FCST VA CLD +18HR: 31/0500Z NO VA EXP RMK: ERUPTION OBS IN WEBCAM BUT VA CLD NOT OBS DUE TO HVY WX CLD COVER. POSS VA CLD BELOW WX CLD DECK MOV W AT 10 KTS. FL BASED ON NWP. ...JLEVINE NXT ADVISORY: WILL BE ISSUED BY 20210530/1800Z