FVXX22 KWBC 040508 VOLCANIC ASH ADVISORY ISSUED: 2003JUN04/0500Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 LOCATION: N1621E14540 AREA: MARIANA ISLANDS SUMMIT ELEVATION: 2585 FT (788 M) ADVISORY NUMBER: 2003/103 INFORMATION SOURCE: GOES-9 IMAGERY. GFS MODEL WINDS FORECAST. ERUPTION DETAILS: CONTINUOUS ASH AND GAS EMISSIONS SINCE MAY 10. OBS ASH DATE/TIME: 04/0413Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL050 MOVING SW 10 KNOTS. FL050/FL190 MOVING W 10-15 KNOTS. FCST ASH CLOUD +6H: SEE SIGMETS. REMARKS: ASH IS NOT IDENTIFIABLE IN SATELLITE IMAGERY THROUGH 04/0413Z DUE TO EXTENSIVE CLOUDINESS. KARST NEXT ADVISORY: WILL BE ISSUED BY 2003JUN04/1100Z. NNNN