FVXX20 KWBC 260752 VOLCANIC ASH ADVISORY ISSUED: 2003AUG26/0800Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/169 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. GUAYAQUIL MWO SIGMETS. . ERUPTION DETAILS: ASH ERUPTION STARTED AT 20/1745Z. OBS ASH DATE/TIME: 26/0715Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/270 MOVING WEST 10-20 KNOTS. FCST ASH CLOUD+6H: SEE SIGMETS AND VAFTAD. REMARKS: ASH CANNOT BE SEEN IN SATELLITE IMAGERY THROUGH 26/0715Z. HOWEVER A WEAK INTERMITTENT HOTSPOT CAN SOMETIMES BE SEEN. THE MOST RECENT KNOWN ASH OBSERVATION WAS AT 26/0144Z WHEN THE GEOPHYSICAL INSTITUTE OBSERVED ASH TO FL270 MOVING TOWARD THE WEST. . NEXT ADVISORY: WILL BE ISSUED BY 2003AUG26/1400Z. NNNN