FVXX20 KWBC 202243 VOLCANIC ASH ADVISORY ISSUED: 2002MAR20/2240Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S07826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M). . ADVISORY NUMBER: 2002/161 . INFORMATION SOURCE: GOES-8 IMAGERY. LOCAL SURFACE OBSERVATION AS REPORTED BY GUAYAQUIL MWO . ERUPTION DETAILS: ERUPTION REPORTED AT 20/2200Z TO FL230 MOVING N TO NORTHWEST. OBS ASH DATE/TIME: 20/2200Z . OBS ASH CLOUD: ENHANCEMENT IN VICINITY OF SUMMIT INDICATES LIKELY PRESENCE OF ASH. . FCST ASH CLOUD+6H: SEE SIGMETS. . REMARKS: NEXT ADVISORY: WILL BE ISSUED BY 2002MARCH21/05000Z . NNNN