FVXX20 KNES 040857 VA ADVISORY DTG: 20200104/0857Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0004 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2020/015 INFO SOURCE: GOES-EAST. WEB CAM. NWP MODELS. VOLCAT. ERUPTION DETAILS: UPDATED VA CLD OBS VA DTG: 04/0820Z OBS VA CLD: SFC/FL1700 N0007 W07822 - S0004 W07739 - S0006 W07739 - S0004 W07823 - N0007 W07822 MOV W 15-20KT FCST VA CLD +6HR: 04/1430Z SFC/FL1700 N0004 W07823 - S0004 W07739 - S0005 W07739 - S0005 W07824 - N0004 W07823 FCST VA CLD +12HR: 04/2030Z SFC/FL170 N0004 W07824 - S0004 W07739 - S0005 W07738 - S0005 W07824 - N0004 W07824 FCST VA CLD +18HR: 05/0230Z SFC/FL1700 N0000 W07825 - S0004 W07739 - S0005 W07738 - S0011 W07826 - N0000 W07825 RMK: ONGOING VA EMS VISIBLE IN STLT IMAGERY EXTENDING 40 NMI W FM SUMMIT FL170. NWP MODELS SUGGEST CONT WESTWARD FLOW THRU T+18 HRS. ...BOLL NXT ADVISORY: WILL BE ISSUED BY 20200104/1500Z