FVXX22 KWBC 031058 VOLCANIC ASH ADVISORY ISSUED: 2003JUN03/1100Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 LOCATION: N1621E14540 AREA: MARIANA ISLANDS SUMMIT ELEVATION: 2585 FT (788 M) ADVISORY NUMBER: 2003/100 INFORMATION SOURCE: GOES-9 IMAGERY. GFS MODEL WINDS FORECAST. ERUPTION DETAILS: CONTINUOUS ASH AND GAS EMISSIONS SINCE MAY 10. OBS ASH DATE/TIME: 03/1013Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL150 MOVING SW 5-10 KNOTS. FL150/FL250 MOVING W 5-10 KNOTS. FCST ASH CLOUD +6H: SEE SIGMETS. REMARKS: ASH IS NOT IDENTIFIABLE IN SATELLITE IMAGERY DUE TO EXTENSIVE CLOUDINESS. GUAM MWO RELAYED A PILOT REPORT OF ASH AT FL250 OVER THE VOLCANO. NEXT ADVISORY: WILL BE ISSUED BY 2003JUN03/1700Z. NNNN