FVXX20 KWBC 232330 VOLCANIC ASH ADVISORY ISSUED: 2002AUG23/2330Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2002/413 . INFORMATION SOURCE: GOES-8 IMAGERY. AVN MODEL ERUPTION DETAILS: ERUPTION AT 23/2313Z. . OBS ASH DATE/TIME: 23/2315Z . OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL260 MOVING W 10-15 KNOTS . FCST ASH CLOUD+6H: SEE SIGMETS. . REMARKS: NO ASH WAS DETECTED IN SATELLITE DATA THROUGH 2315Z DUE TO EXTENSIVE LOW AND MID LEVEL CLOUDS. THE GEOPHYSICAL INSTITUTE ESTIMATED THE ASH TO FL260. KARST . NEXT ADVISORY: WILL BE ISSUED BY 2002AUG24/0530Z. . NNNN