FVXX20 KNES 081557 VA ADVISORY DTG: 20120908/1557Z VAAC: WASHINGTON VOLCANO: SAN CRISTOBAL 1404-02 PSN: N1241 W08659 AREA: NICARAGUA SUMMIT ELEV: 5725 FT (1745 M) ADVISORY NR: 2012/001 INFO SOURCE: GOES-13. PILOT REPORT. ERUPTION DETAILS: POSSIBLE ERUPTION AROUND 1500Z SEEN IN IMAGERY AT 1515Z MOV NW FL UNKN 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 NNNN