FVXX22 KNES 190021 VA ADVISORY DTG: 20170519/0021Z VAAC: WASHINGTON VOLCANO: TURRIALBA 345070 PSN: N1001 W08346 AREA: COSTA.RICA SUMMIT ELEV: 10958 FT (3340 M) ADVISORY NR: 2017/153 INFO SOURCE: GOES-EAST. GFS WINDS. VOLCANO WEB CAMERA. ERUPTION DETAILS: ONGOING VA EMS OBS VA DTG: 18/2345Z OBS VA CLD: SFC/FL160 N1055 W08315 - N1040 W08259 - N1002 W08344 - N1003 W08346 - N1055 W08315 MOV NE 5-10KT FCST VA CLD +6HR: 19/0600Z SFC/FL160 N1045 W08307 - N1032 W08253 - N1001 W08345 - N1003 W08346 - N1045 W08307 FCST VA CLD +12HR: 19/1200Z SFC/FL160 NO ASH EXP FCST VA CLD +18HR: 19/1800Z NO ASH EXP RMK: T+0 CONFIDENCE HIGH. ONGOING VA EMS OBS IN STLT IMAGERY. VA CONT MOV NE OF SUMMIT. ...FISHER NXT ADVISORY: WILL BE ISSUED BY 20170519/0615Z