FVXX20 KWBC 281323 VOLCANIC ASH ADVISORY ISSUED: 2003OCT28/1330Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/424 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. GUAYAQUIL MWO SIGMET ERUPTION DETAILS: CONTINUED ASH AND STEAM EXHALATIONS. OBS ASH DATE/TIME: 28/1245Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA WINDS FL100/230 MOVING SW 10-15 KNOTS. FCST ASH CLOUD+6H: SEE SIGMETS REMARKS: ASH COULD NOT BE SEEN IN THE CURRENT SATELLITE IMAGERY THROUGH 28/1245Z. THE LATEST GROUND OBSERVATION OF ASH OVER THE VOLCANO WAS AT 28/1200Z....WALTER NEXT ADVISORY: WILL BE ISSUED BY 2003OCT28/1930Z. NNNN