FVXX20 KWBC 040830 VOLCANIC ASH ADVISORY . ISSUED: 2002APR04/0830Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S07826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2002/196 . INFORMATION SOURCE: GOES-8 IMAGERY. AVN MODEL WINDS FORECAST. GEOPHYSICAL INSTITUTE. . ERUPTION DETAILS: STEAM AND ASH EMISSION OBSERVED AT 03/2338Z FO FL165/230. . OBS ASH DATE/TIME: 03/2338Z . OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL165/230 MOVING WEST AROUND 15-20 KNOTS. . FCST ASH CLOUD+6H: SEE SIGMETS. . REMARKS: SATELLITE IMAGERY THROUGH 0745Z CONTINUES TO BE OBSCURED BY EXTENSIVE CLOUD COVER WITH NO DETECTION OF ASH. . . NEXT ADVISORY: WILL BE ISSUED BY 2002APR04/1430Z. . NNNN