FVXX21 KNES 281228 VA ADVISORY DTG: 20170928/1228Z VAAC: WASHINGTON VOLCANO: TURRIALBA 345070 PSN: N1001 W08346 AREA: COSTA_RICA SUMMIT ELEV: 10958 FT (3340 M) ADVISORY NR: 2017/261 INFO SOURCE: GOES-EAST. NON-OPERATIONAL GOES-16. NWP MODELS. OVSICORI-UNA. ERUPTION DETAILS: ERUPTION BEGINNING 28/1130Z OBS VA DTG: 28/1200Z OBS VA CLD: VA NOT IDENTIFIABLE FROM SATELLITE DATA WINDS SFC/FL130 045/5KT FCST VA CLD +6HR: 28/1800Z FCST VA CLD +12HR: 29/0000Z FCST VA CLD +18HR: 29/0600Z RMK: VO RPRT NEW ERUPTION BEGINNING AT 1130Z WITH VA TO FL125 MOV SW. VA NOT SEEN IN STLT IMAGERY DUE TO WX CLD. MODEL FCST WINDS DO NOT AGREE WITH THE OBS MOTION BUT MODEL WINDS ARE LITE AND VRBL. ...TURK NXT ADVISORY: WILL BE ISSUED BY 20170928/1830Z