FVXX21 KNES 281910 VA ADVISORY DTG: 20120728/1909Z VAAC: WASHINGTON VOLCANO: SANGAY 1502-09 PSN: S0201 W07820 AREA: ECUADOR SUMMIT ELEV: 17159 FT (5230 M) ADVISORY NR: 2012/039 INFO SOURCE: PILOT REPORT. NOTE VOLCANO NAME CHANGE ERUPTION DETAILS: REPORT OF EMISSION TO FL220 MOV W AT 1800Z 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