FVXX20 KNES 050511 VA ADVISORY DTG: 20210405/0511Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0005 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2021/237 INFO SOURCE: GOES-16. WEBCAM. NWP MODELS. ERUPTION DETAILS: PSBL CONTG VA EMS. OBS VA DTG: 05/0450Z OBS VA CLD: SFC/FL150 S0001 W07754 - S0004 W07739 - S0005 W07739 - S0005 W07755 - S0001 W07754 MOV W 5KT FCST VA CLD +6HR: 05/1100Z NO VA EXP FCST VA CLD +12HR: 05/1700Z NO VA EXP FCST VA CLD +18HR: 05/2300Z NO VA EXP RMK: VA NOT OBS IN SAT DUE TO XTNSV WX CLD OBSCN. WEBCAM SHOWS PSBL OCNL VA AND GAS EMS CONTG. OBS VA AREA BASED ON NWP MDLS AND PREV VAA. ...CLARK NXT ADVISORY: WILL BE ISSUED BY 20210405/1115Z