FVXX21 KNES 122207 VA ADVISORY DTG: 20180412/2207Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0004 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2018/373 INFO SOURCE: GOES-EAST. NWP MODELS. CIMSS VOLCAT. ERUPTION DETAILS: ONGOING VA EMS OBS VA DTG: 12/2130Z OBS VA CLD: SFC/FL160 N0013 W07728 - N0005 W07716 - S0006 W07737 - S0003 W07738 - N0013 W07728 MOV NE 5-10KT FCST VA CLD +6HR: 13/0330Z SFC/FL160 N0020 W07728 - N0002 W07705 - S0008 W07738 - S0004 W07739 - N0020 W07728 FCST VA CLD +12HR: 13/0930Z SFC/FL160 NO ASH EXP FCST VA CLD +18HR: 13/1530Z 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 WIND IS WEAK AND VARIABLE, SO LOW CONFIDENCE IN FCST VA MOV. ...ZHU NXT ADVISORY: WILL BE ISSUED BY 20180413/0400Z