FVXX20 KNES 150147 VA ADVISORY DTG: 20180815/0147Z VAAC: WASHINGTON VOLCANO: RINCON DE LA VIEJA 345020 PSN: N1049 W08519 AREA: COSTA.RICA SUMMIT ELEV: 6286 FT (1916 M) ADVISORY NR: 2018/004 INFO SOURCE: OVSICORI-UNA. ERUPTION DETAILS: PSBL ERUPTION AT 0028Z. 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