FVXX21 KNES 132018 VA ADVISORY DTG: 20180413/2018Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0005 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2018/377 INFO SOURCE: GOES-EAST. NWP MODELS. CIMSS VOLCAT. ERUPTION DETAILS: POSS VA EMS OBS VA DTG: 13/1945Z OBS VA CLD: SFC/FL220 S0003 W07740 - S0006 W07738 - S0024 W07752 - S0019 W07758 - S0003 W07740 MOV SW 5-10KT FCST VA CLD +6HR: 14/0200Z SFC/FL220 S0002 W07739 - S0006 W07737 - S0025 W07752 - S0019 W07758 - S0002 W07739 FCST VA CLD +12HR: 14/0800Z SFC/FL220 NO ASH EXP FCST VA CLD +18HR: 14/1400Z NO ASH EXP RMK: VA IS EXPECTED IN THE AREA, BUT IS DIFFICULT TO OBS DUE TO WX CLDS. VA IS DRAWN BASED ON PREVIOUS FCST. NWP MODEL GUIDANCE SUGGESTS A SW MOV THRU +6 HRS. ...ZHU NXT ADVISORY: WILL BE ISSUED BY 20180414/0215Z