FVXX20 KWBC 290157 VOLCANIC ASH ADVISORY ISSUED: 2003AUG29/0200Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/180 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. GUAYAQUIL MWO SIGMETS. ERUPTION DETAILS: ONGOING ERUPTION SINCE 20/1745Z. OBS ASH DATE/TIME: 29/0145Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE IN SATELLITE DATA. WINDS FL100/240 MOVING W 10-15 KNOTS. FCST ASH CLOUD+6H: SEE SIGMETS AND VAFTAD. REMARKS: RAPID SCAN SATELLITE OPERATIONS LIMITS VIEWING SOUTH OF 1.7S. THE LATEST FULL DISK IMAGE AT 28/2345Z SHOWED A PLUME OF ASH UP TO 15 NM WIDE EXTENDING APPROXIMATELY 80 NM WESTSOUTHWEST OF THE SUMMIT. LOCAL AIRCRAFT AND SURFACE REPORTS INDICATE ASH AT FL240 MOVING WEST. NEXT ADVISORY: WILL BE ISSUED BY 2003AUG29/0800Z. NNNN