FVXX22 KWBC 231252 VOLCANIC ASH ADVISORY ISSUED: 2003JUN23/1300Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 LOCATION: N1621E14540 AREA: MARIANA ISLANDS SUMMIT ELEVATION: 2585 FT (788 M) ADVISORY NUMBER: 2003/182 INFORMATION SOURCE: GOES-9 IMAGERY. GFS MODEL WINDS FORECAST. ERUPTION DETAILS: CONTINUOUS ASH AND GAS EMISSIONS SINCE MAY 10. OBS ASH DATE/TIME: 23/1202Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL080 MOVING W 10-15 KNOTS. FCST ASH CLOUD +6H: SEE SIGMETS. REMARKS: CLOUDS COVER THE REGION TO THE WEST OF THE VOLCANO MAKING IT DIFFICULT TO DETECT ASH. ANY ASH UP TO FL080 SHOULD MOVE TO THE WEST AT 10-15 KNOTS. NEXT ADVISORY: WILL BE ISSUED BY 2003JUN23/1900Z. NNNN