FVXX21 KNES 281943 VA ADVISORY DTG: 20120728/1942Z VAAC: WASHINGTON VOLCANO: SANGAY 1502-09 PSN: S0201 W07820 AREA: ECUADOR SUMMIT ELEV: 17159 FT (5230 M) ADVISORY NR: 2012/040 INFO SOURCE: GOES-13. GFS WINDS. PILOT REPORT. GEOPHYSICAL INST. ERUPTION DETAILS: SMALL EMISSION BURST AROUND 1745Z NOW DISSIPATED. OBS VA DTG: 28/1915Z OBS VA CLD: VA NOT IDENTIFIABLE FROM SATELLITE DATA WINDS FL100/FL220 080/10-15KT FCST VA CLD +6HR: 29/0130Z FCST VA CLD +12HR: 29/0730Z FCST VA CLD +18HR: 29/1330Z RMK: A PIREP AT 1800Z RPRTD VA CLD TO FL220 MOV W. IN SAT IMAGERY A SMALL BURST THRU LAYER CLDS SEEN AT 1745Z THAT MOVS W AND DISPD BY 1845Z AND ALSO NOT SEEN AT 1915Z. MAY HAVE BEEN MOSTLY GASES. ...SWANSON NXT ADVISORY: NO FURTHER ADVISORIES NNNN