FVXX20 KWBC 101930Z VOLCANIC ASH ADVISORY ISSUED: 2002AUG10/1930Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2002/387 . INFORMATION SOURCE: GOES-8 IMAGERY GUAYAQUIL MWO SIGMET. GEOPHYSICAL INSTITUTE REPORT. AVN MODEL WINDS FORECAST ERUPTION DETAILS: ASH OBSERVED AT 10/1240Z TO FL220 BY AIRCRAFT AND 10/1551 BY GEOPHYSICAL INSTITUTE MOVING WEST. . OBS ASH DATE/TIME: 10/1551Z . OBS ASH CLOUD: ASH NOT IDENTIFIABLE IN SATELLITE DATA. . FCST ASH CLOUD+6H: SEE SIGMETS. . REMARKS: ASH CANNOT BE CURRENTLY SEEN IN IMAGERY THROUGH 10/1845Z ALTHOUGH THERE ARE EXTENSIVE CLOUDS PRESENT. . NEXT ADVISORY: WILL BE ISSUED BY 2002AUG11/0130Z. . NNNN