FVXX20 KWBC 121120 VOLCANIC ASH ADVISORY ISSUED: 2002JUL12/1120Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2002/326 . INFORMATION SOURCE: GOES-8 IMAGERY. GUAYAQUIL MWO SIGMET. . ERUPTION DETAILS: ASH OBSERVED AT 12/1042Z TO FL165/200. . OBS ASH DATE/TIME: 12/1042Z . OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. . FCST ASH CLOUD+6H: SEE SIGMETS. . REMARKS: THE GEOPHYSICAL INSTITUTE REPORTED AN ERUPTION OCCURRED AT 12/1042Z WITH ASH UP TO FL200. ASH CANNOT BE DETECTED IN SATELLITE IMAGERY THROUGH 12/1045Z POSSIBLY DUE TO THE LOW CLOUDS IN THE AREA. . NEXT ADVISORY: WILL BE ISSUED BY 12/1730Z . NNNN