FVXX22 KWBC 310659 VOLCANIC ASH ADVISORY ISSUED: 2003MAY31/0700Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 LOCATION: N1621E14540 AREA: MARIANA ISLANDS SUMMIT ELEVATION: 2585 FT (788 M) ADVISORY NUMBER: 2003/087 INFORMATION SOURCE: GOES-9 IMAGERY. GFS MODEL WINDS FORECAST. PILOT REPORT. ERUPTION DETAILS: CONTINUOUS ASH AND GAS EMISSIONS SINCE MAY 10. OBS ASH DATE/TIME: 31/0602Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL060 MOVING N 5-10 KNOTS. FL060/FL120 MOVING NE 5-10 KNOTS. FL120/180 MOVING E 5-10 KNOTS. FL180/250 MOVING S 10-15 KNOTS FCST ASH CLOUD +6H: SEE SIGMETS REMARKS: ASH NOT IDENTIFIABLE IN SATELLITE IMAGERY THROUGH 31/0602Z AS CLOUD COVER CONTINUES TO OBSCURE THE VOLCANO. A PILOT REPORT WAS RECEIVED AT 30/2230Z INDICATING THAT ASH WAS TO FL250. WE WILL CONTINUE TO CLOSELY MONITOR ANATAHAN AS CLOUD COVER ACROSS THE VOLCANO COULD DISSIPATE AT ANY TIME....KIBLER NEXT ADVISORY: WILL BE ISSUED BY 2003MAY31/1300Z. NNNN