FVXX20 KNES 230157 VOLCANIC ASH ADVISORY ISSUED: 2005APR23/0150Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 LOCATION: N1621E14540 AREA: MARIANA.ISLANDS SUMMIT ELEVATION: 2585 FT (788 M) ADVISORY NUMBER: 2005/193 INFORMATION SOURCE: GFS MODEL WINDS. GOES-9. ERUPTION DETAILS: CONTINUOUS LOW LEVEL ASH EMISSIONS OBS ASH DATE/TIME: 23/0125Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL100 MOVING TO NW 15 KNOTS. FCST ASH CLOUD +6H: 23/0700Z SFC/FL100 15NM WIDE LINE BETWEEN N1738E14421 - N1620E14536. FCST ASH CLOUD +12H: 23/1300Z SFC/FL100 15NM WIDE LINE BETWEEN N1804E14358 - N1621E14538. FCST ASH CLOUD +18H: NOT AVBL REMARKS: IT IS DIFFICULT TO DETECT ASH FROM SATELLITE IMAGERY DUE TO EXTENSIVE CLOUDS OVER THE VOLCANO. ANY ASH UP TO FL100 SHOULD MOVE TOWARDS THE NW AT 15 KTS. ...KARST NEXT ADVISORY: WILL BE ISSUED BY 2005APR23/0745Z NNNN