FVXX20 KNES 061317 VOLCANIC ASH ADVISORY ISSUED: 2005AUG06/1316Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 LOCATION: N1621E14540 AREA: MARIANA.ISLANDS SUMMIT ELEVATION: 2585 FT (788 M) ADVISORY NUMBER: 2005/639 INFORMATION SOURCE: GFS MODEL WINDS. GOES-9. ERUPTION DETAILS: CONTINUOUS EMISSIONS CONTAINING ASH OBS ASH DATE/TIME: 06/1225Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL160 MOVING TO W 10-15 KNOTS. FL170/FL180 MOVING TO SW 15 KNOTS. FCST ASH CLOUD +6H: 06/1830Z FCST ASH CLOUD +12H: 07/0030Z FCST ASH CLOUD +18H: 07/0630Z REMARKS: UNTIL THE PAST COUPLE OF HOURS FAIRLY THICK ASH COULD BE SEEN EXTENDING FROM THE VOLCANO TOWARD THE WEST. HOWEVER DENSE WEATHER CLOUDS OVER THE AREA ARE NOW PREVENTING UNAMBIGUOUS ASH DETECTION BY SATELLITE. THE ASH THAT IS CURRENTLY BELIEVED TO BE MOVING TO THE WEST IS EXPECTED TO CONTINUE TO MOVE TO THE WEST OR WEST SOUTHWEST OR WEST NORTHWEST THROUGHOUT THE NEXT 18 HOURS. ... NEXT ADVISORY: WILL BE ISSUED BY 2005AUG06/1915Z NNNN