FVXX20 KNES 211039 VOLCANIC ASH ADVISORY ISSUED: 2005JUL21/1038Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 LOCATION: N1621E14540 AREA: MARIANA.ISLANDS SUMMIT ELEVATION: 2585 FT (788 M) ADVISORY NUMBER: 2005/571 INFORMATION SOURCE: GUAM WFO. HONOLULU MWO. GFS MODEL WINDS. GOES-9. ERUPTION DETAILS: ERUPTION AT 20/2215Z OBS ASH DATE/TIME: 21/0902Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL300 MOVING TO NE 20-30 KNOTS. FCST ASH CLOUD +6H: 21/1500Z FCST ASH CLOUD +12H: 21/2100Z FCST ASH CLOUD +18H: 22/0300Z REMARKS: SATELLITE IMAGERY STILL SHOWS EXTENSIVE CLOUD COVER OVER THE VOLCANO. THE HEIGHT OF THESE CLOUDS HAS LOWERED SO THAT ASH ABOVE FL300 COULD BE VISIBLE IF PRESENT. GUAM REPORTS NO NEW ACTIVITY AND THEY CAN NO LONGER SEE ANY ASH IN RADAR. ... NEXT ADVISORY: WILL BE ISSUED BY 2005JUL21/1645Z NNNN