FVXX20 KNES 281711 VOLCANIC ASH ADVISORY ISSUED: 2005APR28/1711Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 LOCATION: N1621E14540 AREA: MARIANA.ISLANDS SUMMIT ELEVATION: 2585 FT (788 M) ADVISORY NUMBER: 2005/214 INFORMATION SOURCE: GFS MODEL WINDS. GOES-9. ERUPTION DETAILS: CONTINUOUS ASH EMISSIONS OBS ASH DATE/TIME: 28/1613Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL090 MOVING TO SW 5-10 KNOTS. FCST ASH CLOUD +6H: NOT AVBL FCST ASH CLOUD +12H: NOT AVBL FCST ASH CLOUD +18H: NOT AVBL REMARKS: ASH CAN NOT BE SEEN IN MULTISPECTRAL IMAGERY THROUGH 28/1613Z. THIN LOW LEVEL ASH IS NOTORIOUSLY DIFFICULT TO SEE AT NIGHT. ... NEXT ADVISORY: WILL BE ISSUED BY 2005APR28/2315Z NNNN