FVXX20 KWBC 241935 VOLCANIC ASH ADVISORY ISSUED: 2002APR24/2000Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S07826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2002/221 . INFORMATION SOURCE: GOES-8 IMAGERY. GEOPHYSICAL INSTITUTE. AVN MODEL WINDS FORECAST. . ERUPTION DETAILS: EXHALATION AT 24/1315Z . OBS ASH DATE/TIME: 24/1615Z . OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL250 MOVING SW 15-20 KNOTS. . FCST ASH CLOUD+6H: SEE SIGMETS AND VAFTAD. . REMARKS: GEOPHYSICAL INSTITUTE INDICATED THAT ASH PLUME HAS THINNED OUT A BIT BUT STILL IS OBSERVED. ASH CANNOT BE SEEN IN SATELLITE IMAGERY FROM 1615Z THROUGH 1915Z DUE TO EXTENSIVE WEATHER CLOUDS...GALLINA/KIBLER . NEXT ADVISORY: WILL BE ISSUED BY 2002APR25/02000Z . NNNN