FVXX20 KNES 121841 VA ADVISORY DTG: 20180212/1841Z VAAC: WASHINGTON VOLCANO: TURRIALBA 345070 PSN: N1001 W08346 AREA: COSTA_RICA SUMMIT ELEV: 10958 FT (3340 M) ADVISORY NR: 2018/062 INFO SOURCE: GOES-EAST. NWP MODELS. VOLCANO WEB CAMERA. OVSICORI-UNA. ERUPTION DETAILS: ONGOING VA EMS. OBS VA DTG: 12/1815Z OBS VA CLD: SFC/FL150 N1005 W08420 - N1002 W08346 - N1001 W08346 - N0941 W08414 - N1005 W08420 MOV W 10-15KT FCST VA CLD +6HR: 13/0030Z SFC/FL150 N1002 W08415 - N1002 W08346 - N1001 W08345 - N0940 W08411 - N1002 W08415 FCST VA CLD +12HR: 13/0630Z SFC/FL150 N1001 W08346 - N1000 W08346 - N0940 W08411 - N1001 W08416 - N1001 W08346 FCST VA CLD +18HR: 13/1230Z SFC/FL150 N1002 W08346 - N0959 W08346 - N0940 W08411 - N0958 W08416 - N1002 W08346 RMK: PRONOUNCED ONGOING VA EMS NOTED IN WEBCAM IMAGERY. VA EMS SPREADING W THRU SW TO APPROX 30 NM DOWNWIND OF SUMMIT. ...LEE NXT ADVISORY: WILL BE ISSUED BY 20180213/0045Z