FVXX24 KNES 281638 VA ADVISORY DTG: 20170828/1638Z VAAC: WASHINGTON VOLCANO: TURRIALBA 345070 PSN: N1001 W08346 AREA: COSTA_RICA SUMMIT ELEV: 10958 FT (3340 M) ADVISORY NR: 2017/232 INFO SOURCE: GOES-EAST. NON-OPERATIONAL GOES-16. OVSICORI-UNA. ERUPTION DETAILS: PSBL VA EM RPT 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