FVXX22 KWBC 081106 VOLCANIC ASH ADVISORY ISSUED: 2003JUN08/1100Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 LOCATION: N1621E14540 AREA: MARIANA ISLANDS SUMMIT ELEVATION: 2585 FT (788 M) ADVISORY NUMBER: 2003/121 INFORMATION SOURCE: GOES-9 IMAGERY. GFS MODEL WINDS FORECAST. ERUPTION DETAILS: CONTINUOUS ASH AND GAS EMISSIONS SINCE MAY 10. OBS ASH DATE/TIME: 08/1013Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA WINDS SFC/FL170 MOVING NW 5-10 KNOTS BECOMING W 5-10 KNOTS. FCST ASH CLOUD +6H: SEE SIGMETS. REMARKS: AT 1013Z DUE TO WEATHER CLOUDS THE PREVIOUS NW MOVING ASH CLOUD COULD NO LONGER BE DETECTED IN IMAGERY HOWEVER AT 0802Z THE ASH PLUME COULD STILL BE SEEN MOVING NW AROUND 5-10 KNOTS AND EXTENDED NW AROUND 60 NM FROM THE VOLCANO. THE PREVIOUS LOWER LEVEL ASH MOVING SW HAD DISSIPATED IN IMAGERY AROUND 0802Z. A COUPLE PILOT REPORTS RELAYED BY THE MWO IN GUAM REPORTED THE PREVIOUS SW MOVING ASH CLOUD TO FL090. NEXT ADVISORY: WILL BE ISSUED BY 2003JUN08/1700Z. NNNN