FVXX21 KNES 181900 VA ADVISORY DTG: 20170718/1900Z VAAC: WASHINGTON VOLCANO: TURRIALBA 345070 PSN: N1001 W08346 AREA: COSTA.RICA SUMMIT ELEV: 10958 FT (3340 M) ADVISORY NR: 2017/196 INFO SOURCE: VOLCANO WEB CAMERA. ERUPTION DETAILS: VA SEEN ON WEB CAM AT 18/1855Z. RMK: WE HAVE RECEIVED INFORMATION SUGGESTING A POSSIBLE VA EMISSION. WE WILL GATHER FURTHER INFORMATION AND ISSUE A FULL ADVISORY AS SOON AS POSSIBLE. NXT ADVISORY: AS SOON AS POSSIBLE