FVXX20 KNES 161839 VOLCANIC ASH ADVISORY ISSUED: 2005AUG16/1839Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 LOCATION: N1621E14540 AREA: MARIANA.ISLANDS SUMMIT ELEVATION: 2585 FT (788 M) ADVISORY NUMBER: 2005/683 INFORMATION SOURCE: HONOLULU MWO. GFS MODEL WINDS. GOES-9. ERUPTION DETAILS: CONTINUOUS ASH EMISSIONS OBS ASH DATE/TIME: 16/1802Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL180 MOVING TO E 10-15 KNOTS. FCST ASH CLOUD +6H: 17/0000Z FCST ASH CLOUD +12H: 17/0600Z FCST ASH CLOUD +18H: 17/1200Z REMARKS: CLOUDS ARE OBSCURING THE AREA AROUND THE VOLCANO MAKING ASH DETECTION DIFFICULT IN MULTISPECTRAL SATELLITE IMAGERY. ... NEXT ADVISORY: WILL BE ISSUED BY 2005AUG17/0045Z NNNN