FVXX20 KWBC 230953 VOLCANIC ASH ADVISORY ISSUED: 2003SEP23/1000Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/275 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. ERUPTION DETAILS: EMISSION AT 21/2345Z OBS ASH DATE/TIME: 23/0815Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL230 MOVING SW 10-15 KNOTS. FCST ASH CLOUD+6H: SEE SIGMETS. REMARKS: ASH CANNOT BE SEEN IN SATELLITE IMAGERY THROUGH 23/0815Z DUE TO SCATTERED CLOUDS OVER THE REGION. NEXT ADVISORY: WILL BE ISSUED BY 2003SEP23/1600Z. NNNN