FVXX20 KWBC 260730 VOLCANIC ASH ADVISORY ISSUED: 2002JUL25/0730Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2002/355 . 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: 25/0404Z . OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL170 MOVING WEST 20 KNOTS. . FCST ASH CLOUD+6H: SEE SIGMETS. . REMARKS: ASH CANNOT BE SEEN IN SATELLITE IMAGERY THROUGH 25/0715Z DUE TO CONTINUED CLOUDINESS OVER THE REGION. AT 25/0016Z THE GEOPHYSICAL INSTITUTE OBSERVED ASH BETWEEN FL165....WALTER . NEXT ADVISORY: WILL BE ISSUED BY 2002JUL25/1330Z. . NNNN