FVXX20 KNES 151839 VOLCANIC ASH ADVISORY ISSUED: 2005AUG15/1838Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 LOCATION: N1621E14540 AREA: MARIANA.ISLANDS SUMMIT ELEVATION: 2585 FT (788 M) ADVISORY NUMBER: 2005/679 INFORMATION SOURCE: GFS MODEL WINDS. RADIOSONDE. GOES-9. ERUPTION DETAILS: CONTINUOUS ASH EMISSIONS OBS ASH DATE/TIME: 15/1802Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL150 MOVING TO E 5-10 KNOTS. FCST ASH CLOUD +6H: 16/0000Z FCST ASH CLOUD +12H: 16/0600Z FCST ASH CLOUD +18H: 16/1200Z REMARKS: ASH IS NOT DISCERNIBLE IN SATELLITE IMAGERY DUE DENSE WEATHER CLOUDS. THE USGS REPORTED AN INCREASE IN SEISMIC ACTIVITY AT 1659Z. ...BROWN NEXT ADVISORY: WILL BE ISSUED BY 2005AUG16/0045Z NNNN