FVXX21 KWBC 281600 VOLCANIC ASH ADVISORY ISSUED: 2003MAR28/1600Z VAAC: WASHINGTON VOLCANO: TEST LOCATION: XXX AREA: XXX SUMMIT ELEVATION: XX ADVISORY NUMBER: XX INFORMATION SOURCE: XX ERUPTION DETAILS: XX OBS ASH DATE/TIME: XX OBS ASH CLOUD: THIS IS A TEST OF COMMS. FCST ASH CLOUD +6H: REMARKS: NIL. TEST VAA 1 NEXT ADVISORY: NO FURTHER ADVISORIES. NNNN