FVXX20 KNES 271921 VA ADVISORY DTG: 20230827/1921Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0004 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2023/503 INFO SOURCE: GOES-16. NWP MODELS. ERUPTION DETAILS: POSS VA EMS OBS VA DTG: 27/1800Z OBS VA CLD: SFC/FL150 N0007 W07749 - S0004 W07739 - S0006 W07740 - N0000 W07753 - N0007 W07749 MOV NW 15KT FCST VA CLD +6HR: 28/0000Z NO VA EXP FCST VA CLD +12HR: 28/0600Z NO VA EXP FCST VA CLD +18HR: 28/1200Z NO VA EXP RMK: VA EMS/CLDS NOT SEEN IN SAT DUE TO MET CLDS. VA FL/DIR BASED ON PREV ADVY AND MDL GUIDANCE. NWP MDL FCST THRU T+0HR. ...ZENG NXT ADVISORY: WILL BE ISSUED BY 20230828/0115Z