FVXX21 KNES 261941 VA ADVISORY DTG: 20181026/1941Z VAAC: WASHINGTON VOLCANO: TURRIALBA 345070 PSN: N1001 W08346 AREA: COSTA_RICA SUMMIT ELEV: 10958 FT (3340 M) ADVISORY NR: 2018/230 INFO SOURCE: OVSICORI-UNA. ERUPTION DETAILS: OVSICORI-UNA RPRTS VA EMS AT 26/1934Z. 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