FVXX20 KWBC 210500 VOLCANIC ASH ADVISORY ISSUED: 2002MAR21/0500Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S07826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M). . ADVISORY NUMBER: 2002/162 . INFORMATION SOURCE: GOES-8 IMAGERY. . ERUPTION DETAILS: ERUPTION REPORTED AT 20/2200Z TO FL230 MOVING N TO NORTHWEST. OBS ASH DATE/TIME: NIL . OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA . FCST ASH CLOUD+6H: SEE SIGMETS. . REMARKS: ASH IS NOT SEEN IN THE SATELLITE IMAGERY THROUGH 21/0345Z....WALTER NEXT ADVISORY: NO FURTHER ADVISORIES . NNNN