FVXX20 KWBC 031430 VOLCANIC ASH ADVISORY . ISSUED: 2002APR03/1430Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S07826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2002/193 . INFORMATION SOURCE: GOES-8 IMAGERY. AVN MODEL WINDS FORECAST. GUAYAQUIL MWO SIGMET. . ERUPTION DETAILS: STEAM AND ASH EMISSION OBSERVED AT 03/1327Z. . OBS ASH DATE/TIME: 03/1345Z . OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/250 MOVING WEST AROUND 15-20 KNOTS. . FCST ASH CLOUD+6H: SEE SIGMETS. . REMARKS: THE GUAYAQUIL SIGMET REPORTS THE GEOPHYSICAL INSTITUTE OBSERVED VA OVER THE VOLCANO RISING TO ESTIMATED FL250. IMAGERY THROUGH 1345Z IS MOSTLY CLOUDY BUT THERE IS SOME SUGGESTION OF A PLUME THROUGH THE BREAKS IN CLOUD COVER MOVING WEST FROM THE SUMMIT. HOWEVER DUE TO CLOUDS THE LENGTH AND WIDTH WOULD BE HARD TO DEFINE. . NEXT ADVISORY: WILL BE ISSUED BY 2002APR03/2030Z. . NNNN