FVXX20 KNES 311550 VOLCANIC ASH ADVISORY ISSUED: 2005MAR31/1549Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 LOCATION: N1621E14540 AREA: MARIANA.ISLANDS SUMMIT ELEVATION: 2585 FT (788 M) ADVISORY NUMBER: 2005/100 INFORMATION SOURCE: GFS MODEL WINDS. GOES-9. ERUPTION DETAILS: CONTINUOUS LOW LEVEL EMISSIONS OBS ASH DATE/TIME: 31/1525Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL100 MOVING TO W 5-15 KNOTS. FCST ASH CLOUD +6H: 31/2125Z SFC/FL100 N1756E14329 - N1629E14539 - N1614E14540 - N1609E14335 - N1756E14329 FCST ASH CLOUD +12H: 31/0325Z SFC/FL100 N1925E14325 - N1629E14539 - N1614E14540 - N1628E14503 - N1647E14323 - N1925E14325 FCST ASH CLOUD +18H: NOT AVBL REMARKS: LOW LEVEL ASH CLOUD VERY DIFFICULT TO DISCERN ON GOES 9 IMAGERY. HOWEVER...AN OCCASIONAL HOTSPOT CAN BE SEEN INDICATING CONTINUED LOW LEVEL ACTIVITY. FORECAST FOR A SLIGHT SHIFT FROM DUE WEST TO NW BY THE END OF THE FORECAST PERIOD. ...GALLINA NEXT ADVISORY: WILL BE ISSUED BY 2005MAR31/2145Z NNNN