FVXX20 KWBC 042255 VOLCANIC ASH ADVISORY ISSUED: 2002MAR04/2255Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S7826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M). . ADVISORY NUMBER: 2002/117 . INFORMATION SOURCE: GOES-8 IMAGERY. GEOPHYSICAL OBSERVATORY REPORT. AVN MODEL WINDS FORECAST. . ERUPTION DETAILS: ASH OBSERVED AT 04/1610Z. . OBS ASH DATE/TIME: 04/1610Z . OBS ASH CLOUD: SFC/FL250 MOVING W 10 KNOTS. ASH NOT IDENTIFIABLE FROM SATELLITE DATA. . FCST ASH CLOUD+6H: SEE SIGMETS. . REMARKS: THE GEOPHYSICAL INSTITUTE REPORTS ASH OVER THE SUMMIT AT 04/1610Z. CURRENT SATELLITE IMAGERY THROUGH 2215Z SHOWS SOME CLOUDINESS TO THE WEST OF THE VOLCANO BUT WITH SOME BREAKS IN THE CLOUDS. NO ASH IS SEEN IN SATELLITE IMAGERY. ANALYST..RUMINSKI . NEXT ADVISORY: WILL BE ISSUED BY 2002MAR05/0500Z. . NNNN