FVXX20 KWBC 291715 VOLCANIC ASH ADVISORY ISSUED: 2002MAY29/1715Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2002/248 . INFORMATION SOURCE: GEOPHYSICAL INSTITUTE. GUAYAQUIL MWO SIGMET. GOES-8 IMAGERY. AVN MODEL WINDS FORECAST. . ERUPTION DETAILS: EMISSION AT 29/0849Z. . OBS ASH DATE/TIME: 29/1220Z. . OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL260 MOVING WEST AT 10 TO 15 KNOTS. . FCST ASH CLOUD+6H: SEE SIGMETS. . REMARKS: THE GEOPHYSICAL INSTITUTE REPORTED OBSERVED ASH OVER THE SUMMIT TO FL230. YET THE MOST RECENT GUAYAQUIL MWO SIGMET (1248Z)INDICATED AN AIRCRAFT REPORT OF ASH TO FL260. SATELLITE IMAGERY THROUGH 29/1615Z HAS NOT SHOWN ANY ASH....GALLINA. NEXT ADVISORY: WILL BE ISSUED BY 2002MAY29/2315Z. . NNNN