FVXX20 KNES 071909 VOLCANIC ASH ADVISORY ISSUED: 2005AUG07/1909Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 LOCATION: N1621E14540 AREA: MARIANA.ISLANDS SUMMIT ELEVATION: 2585 FT (788 M) ADVISORY NUMBER: 2005/644 INFORMATION SOURCE: GFS MODEL WINDS. GOES-9. ERUPTION DETAILS: ONGOING ASH EMISSIONS OBS ASH DATE/TIME: 07/1825Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL140 MOVING TO W 10-20 KNOTS. FL150/FL180 MOVING TO NW 10 KNOTS. FCST ASH CLOUD +6H: 08/0030Z FCST ASH CLOUD +12H: 08/0630Z FCST ASH CLOUD +18H: 08/1230Z REMARKS: DENSE WEATHER CLOUDS CURRENTLY PREVENT ASH DETECTION BY SATELLITE. UNTIL ABOUT 07/0800Z A 20 NM WIDE ASH PLUME TO FL180 WAS SEEN IN SATELLITE IMAGERY EXTENDING FROM THE SUMMIT TOWARD THE WEST. ... NEXT ADVISORY: WILL BE ISSUED BY 2005AUG08/0115Z NNNN