FVXX20 KNES 161440 VOLCANIC ASH ADVISORY ISSUED: 2005JUL16/1439Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 LOCATION: N1621E14540 AREA: MARIANA.ISLANDS SUMMIT ELEVATION: 2585 FT (788 M) ADVISORY NUMBER: 2005/550 INFORMATION SOURCE: GFS MODEL WINDS. RADIOSONDE. GOES-9. USGS. ERUPTION DETAILS: CONTINUOUS ASH EMISSIONS OBS ASH DATE/TIME: 16/1402Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL100 MOVING TO N 5-10 KNOTS. FL120/FL320 MOVING TO SW 5-15 KNOTS. FL330/FL360 MOVING TO S 15 KNOTS. FCST ASH CLOUD +6H: 16/2000Z NOT AVBL. FCST ASH CLOUD +12H: 17/0200Z NOT AVBL. FCST ASH CLOUD +18H: 17/0800Z NOT AVBL. REMARKS: THE USGS REPORTED TWO STRONG SEISMIC EVENTS AT 1145Z AND 1350Z. ALTHOUGH NO ASH COULD BE DETECTED IN SATELLITE IMAGERY THROUGH 1402Z DUE TO EXTENSIVE CLOUD COVER THE USGS NOTED THAT SEISMIC EVENTS OF THIS MAGNITUDE AT ANATAHAN IN THE PAST HAVE GENERATED ASH CLOUDS OVER FL300. ...TURK NEXT ADVISORY: WILL BE ISSUED BY 2005JUL16/2045Z NNNN