FVXX20 KNES 281546 VA ADVISORY DTG: 20120728/1545Z VAAC: WASHINGTON VOLCANO: SANTA MARIA 1402-03 PSN: N1445 W09133 AREA: GUATEMALA SUMMIT ELEV: 12375 FT (3772 M) ADVISORY NR: 2012/053 INFO SOURCE: GOES-13. ERUPTION DETAILS: VA SEEN EXTENDING 30 NM W OF SUMMIT 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