FVXX20 KWBC 250120 CCA VOLCANIC ASH ADVISORY ISSUED: 2002JUL25/0120Z VAAC: WASHINGTON . CORRECTION TO OBS ASH DATE/TIME . VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2002/354 . INFORMATION SOURCE: GOES-8 IMAGERY. AVN MODEL WINDS FORECAST. GUAYAQUIL MWO SIGMET. GEOPHYSICAL INSTITUTE. . ERUPTION DETAILS: ONGOING ASH AND STEAM EMISSIONS . OBS ASH DATE/TIME: 25/0016Z . OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL200 MOVING W UP TO 15 KNOTS. FL200/FL250 MOVING SW 10 KNOTS. . FCST ASH CLOUD+6H: SEE SIGMETS. . REMARKS: ASH CANNOT BE SEEN IN SATELLITE IMAGERY THROUGH 25/0045Z DUE TO CLOUDINESS OVER THE REGION. AT 25/0016Z THE GEOPHYSICAL INSTITUTE OBSERVED ASH BETWEEN FL165 AND FL200. A PILOT REPORT PLACED ASH UP TO FL240 AT 24/2336Z. . NEXT ADVISORY: WILL BE ISSUED BY 2002JUL25/0730Z. . NNNN