FVXX20 KWBC 211907 VOLCANIC ASH ADVISORY ISSUED: 2004MAR21/1900Z VAAC: WASHINGTON VOLCANO: COLIMA 1401-04 LOCATION: N1931W10337 AREA: MEXICO SUMMIT ELEVATION: 12631 FT (3800 M) ADVISORY NUMBER: 2004/37 INFORMATION SOURCE: GOES-12 IMAGERY. MEXICO CITY MWO. ERUPTION DETAILS: ERUPTION OBSERVED AT 21/1330Z OBS ASH DATE/TIME: NIL OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. FCST ASH CLOUD+6H: NOT AVBL FCST ASH CLOUD+12H: NOT AVBL FCST ASH CLOUD+18H: NOT AVBL REMARKS: THE ASH PLUME OBSERVED EARLIER HAS DISSIPATED NEXT ADVISORY: NO FURTHER ADVISORIES NNNN