FVXX20 KNES 201844 VOLCANIC ASH ADVISORY ISSUED: 2005APR20/1844Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 LOCATION: N1621E14540 AREA: MARIANA.ISLANDS SUMMIT ELEVATION: 2585 FT (788 M) ADVISORY NUMBER: 2005/182 INFORMATION SOURCE: GOES-12. GFS MODEL WINDS. RADIOSONDE. ERUPTION DETAILS: CONTINOUS ASH AND STEAM EMISSIONS OBS ASH DATE/TIME: /Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL100 MOVING TO W 20-25 KNOTS. FCST ASH CLOUD +6H: 21/0100Z SFC/FL100 15NM WIDE LINE BETWEEN N1626E14320 - N1622E14538. FCST ASH CLOUD +12H: 21/ 0700Z SFC/FL100 15NM WIDE LINE BETWEEN N1655E14317 - N1622E14538. FCST ASH CLOUD +18H: 21/1300Z SFC/FL100 15NM WIDE LINE BETWEEN N1720E14317 - N1622E14539. REMARKS: INFRARED AND MULTISPECTRAL IMAGERY SHOWS NO ASH ALTHOUGH THERE ARE SOME CLOUDS PRESENT ...SCHWARTZ NEXT ADVISORY: WILL BE ISSUED BY 2005APR21/0045Z NNNN