FVXX20 KWBC 240748 VOLCANIC ASH ADVISORY ISSUED: 2003SEP24/0800Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/279 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. GUAYAQUIL MWO SIGMET ERUPTION DETAILS: EMISSION AT 21/2345Z OBS ASH DATE/TIME: 24/0715Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/260 MOVING W 10 KNOTS. FCST ASH CLOUD+6H: SEE SIGMETS. REMARKS: ASH CANNOT BE SEEN IN SATELLITE IMAGERY THROUGH 0715Z. THE LAST KNOWN ASH OBSERVATION WAS BY THE GEOPHYSICAL INSTITUTE THAT OBSERVED ASH TO FL260 MOVING TO THE NORTHWEST AT 24/0003Z. NEXT ADVISORY: WILL BE ISSUED BY 2003SEP24/1400Z. NNNN