FVXX20 KNES 180228 VA ADVISORY DTG: 20190818/0228Z VAAC: WASHINGTON VOLCANO: SANGAY 352090 PSN: S0200 W07820 AREA: ECUADOR SUMMIT ELEV: 17159 FT (5230 M) ADVISORY NR: 2019/130 INFO SOURCE: GOES-EAST. GUAYAQUIL MWO. NWP MODELS. VOLCAT. ERUPTION DETAILS: ONGOING VA EMS OBS VA DTG: 18/0021Z OBS VA CLD: SFC/FL280 S0146 W07840 - S0201 W07819 - S0201 W07820 - S0152 W07846 - S0146 W07840 MOV NW 15-20KT FCST VA CLD +6HR: 18/0630Z SFC/FL280 NO ASH EXP FCST VA CLD +12HR: 18/1230Z NO ASH EXP FCST VA CLD +18HR: 18/1830Z NO ASH EXP RMK: WE RECEIVED ASHTAM INDICATING VA EM AT FL280. VOLCAT IMAGEY SHOWS FAINT VA MOV NW, WHICH DOES NOT AGREE WITH WIND DIR AT FL280 BASED ON NWP MDL. LOW CONFIDENCE IN FL AND VA FUTURE MOV. ...ZHU NXT ADVISORY: WILL BE ISSUED BY 20190818/0830Z