FVXX22 KNES 181921 VA ADVISORY DTG: 20190818/1921Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0004 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2019/896 INFO SOURCE: GOES-EAST. NWP MODELS. VOLCAT. ERUPTION DETAILS: POSS ONGOING VA EMS OBS VA DTG: 18/1900Z OBS VA CLD: SFC/FL160 N0005 W07804 - S0004 W07739 - S0006 W07740 - S0007 W07806 - N0005 W07804 MOV NW 15-20KT FCST VA CLD +6HR: 19/0100Z SFC/FL160 N0006 W07803 - S0004 W07738 - S0006 W07740 - S0004 W07806 - N0006 W07803 FCST VA CLD +12HR: 19/0700Z SFC/FL160 NO ASH EXP FCST VA CLD +18HR: 19/1300Z NO ASH EXP RMK: VA NOT VISIBLE IN STLT IMAGERY DUE TO WX CLD IN AREA. VA EM LIKELY. OBS BASED ON NWP MODEL GUIDANCE. ...BOLL NXT ADVISORY: WILL BE ISSUED BY 20190819/0115Z