FVXX23 KNES 311221 VA ADVISORY DTG: 20190531/1221Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0004 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2019/601 INFO SOURCE: GOES-EAST. ERUPTION DETAILS: ONGOING VA EM OBS VA DTG: 31/1200Z OBS VA CLD: SFC/FL170 N0003 W07800 - S0005 W07739 - S0006 W07739 - S0007 W07804 - N0003 W07800 MOV W 10-15KT FCST VA CLD +6HR: 31/1800Z SFC/FL170 N0005 W07802 - S0005 W07739 - S0005 W07738 - S0004 W07806 - N0005 W07802 FCST VA CLD +12HR: 01/0000Z SFC/FL170 N0004 W07804 - S0004 W07739 - S0006 W07738 - S0008 W07806 - N0004 W07804 FCST VA CLD +18HR: 01/0600Z SFC/FL170 N0004 W07805 - S0005 W07739 - S0006 W07739 - S0008 W07806 - N0004 W07805 RMK: VA EM NOT VISIBLE IN STLT IMAGERY DUE TO WX CLD. RECENT RPRT OF VA EM RECEIVED. OBS AND FCST T+18 HRS BASED ON NWP MODEL GUIDANCE. ...BOLL NXT ADVISORY: WILL BE ISSUED BY 20190531/1815Z