FVXX20 KNES 181744 VOLCANIC ASH ADVISORY ISSUED: 2005AUG18/1743Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 LOCATION: N1621E14540 AREA: MARIANA.ISLANDS SUMMIT ELEVATION: 2585 FT (788 M) ADVISORY NUMBER: 2005/691 INFORMATION SOURCE: GFS MODEL WINDS. RADIOSONDE. GOES-9. ERUPTION DETAILS: CONTINUOUS ASH EMISSIONS OBS ASH DATE/TIME: 18/1649Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL070 MOVING TO W 0-5 KNOTS. FL080/FL150 MOVING TO N 0-5 KNOTS. FCST ASH CLOUD +6H: 18/2300Z FCST ASH CLOUD +12H: 19/0500Z FCST ASH CLOUD +18H: 19/1100Z REMARKS: ASH COULD NOT BE DETECTED IN SATELLITE DATA THROUGH 1649Z DUE TO EXTENSIVE CLOUD COVER. MODEL DATA SHOWS LIGHT WINDS THROUGH A DEEP LAYER. ...TURK NEXT ADVISORY: WILL BE ISSUED BY 2005AUG18/2345Z NNNN