FVXX20 KWBC 241401 VOLCANIC ASH ADVISORY ISSUED: 2003SEP24/1400Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/280 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. GUAYAQUIL MWO SIGMET ERUPTION DETAILS: EMISSION AT 21/2345Z OBS ASH DATE/TIME: 24/1315Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/250 MOVING W 10-15 KNOTS. FCST ASH CLOUD+6H: SEE SIGMETS. REMARKS: ASH IS NOT VISIBLE IN THE SATELLITE IMAGERY THROUGH 24/1315Z. THE LAST ASH OBSERVATION WAS FROM AN AIRCRAFT REPORT THAT OBSERVED ASH BETWEEN FL165/250 MOVING WEST AT 24/1225Z ....WALTER NEXT ADVISORY: WILL BE ISSUED BY 2003SEP24/2000Z. NNNN