FVXX20 KNES 201851 VOLCANIC ASH ADVISORY ISSUED: 20070420/1851Z VAAC: WASHINGTON VOLCANO: SANTA MARIA 1402-03 LOCATION: N1445 W09133 AREA: GUATEMALA SUMMIT ELEVATION: 12375 FT (3772 M) ADVISORY NUMBER: 2007/051 INFORMATION SOURCE: GOES-12. GFS WINDS. ERUPTION DETAILS: EMISSION OF GASES AND POSSIBLE ASH OBS ASH DATE/TIME: 20/1815Z OBS ASH CLOUD: VA NOT IDENTIFIABLE FROM SATELLITE DATA. FCST ASH CLOUD +6H: NOT AVBL FCST ASH CLOUD +12H: NOT AVBL FCST ASH CLOUD +18H: NOT AVBL REMARKS: ASH IS NO LONGER VISIBLE IN IMAGERY. ... NEXT ADVISORY: NO FURTHER ADVISORIES