FVXX20 KWBC 221545 CCA VOLCANIC ASH ADVISORY-CORRECTION ISSUED: 2003AUG22/1345Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/154 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. ERUPTION DETAILS: ASH ERUPTION STARTED AT 20/1745Z. OBS ASH DATE/TIME: 22/1315Z. OBS ASH CLOUD: SFC/FL200 S0128W07826 S0128W07841 S0224W08028 S0255W07935 S0135W07824 S0128W07826 MOVING SW 5-10 KNOTS. FCST ASH CLOUD+6H: SEE SIGMETS AND VAFTAD. REMARKS: CORRECTION OF TIME ISSUED. SATELLITE IMAGERY AT 1315Z SHOWED A PLUME OF ASH EXTENDING APPROXIMATELY 131 NM TO THE SOUTHWEST. GUAYAQUIL REPORTED A 1200Z PIREP WITH ASH AT FL180 MOVING W. BROWN NEXT ADVISORY: WILL BE ISSUED BY 2003AUG22/2000Z. NNNN