FVXX20 KNES 210508 VOLCANIC ASH ADVISORY ISSUED: 2005JUL21/0508Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 LOCATION: N1621E14540 AREA: MARIANA.ISLANDS SUMMIT ELEVATION: 2585 FT (788 M) ADVISORY NUMBER: 2005/570 INFORMATION SOURCE: HONOLULU MWO. GFS MODEL WINDS. GOES-9. ERUPTION DETAILS: ERUPTION AT 20/2215Z OBS ASH DATE/TIME: 21/0413Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL300 MOVING TO S 10-20 KNOTS. FL300/FL510 MOVING TO SE 10-15 KNOTS. FCST ASH CLOUD +6H: 21/1000Z FCST ASH CLOUD +12H: 21/1600Z FCST ASH CLOUD +18H: 21/2200Z REMARKS: SATELLITE IMAGERY IS STILL TOO CLOUDY TO DETERMINE THE EXTENT OF THE ASH PLUME. WINDS BETWEEN FL300 AND FL510 ARE GENERALLY MOVING EAST TO SOUTHEAST. ... NEXT ADVISORY: WILL BE ISSUED BY 2005JUL21/1115Z NNNN