FVXX21 KWBC 151218 VOLCANIC ASH ADVISORY ISSUED: 2004JUL15/0937Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 LOCATION: N1621E14540 AREA: MARIANA.ISLANDS SUMMIT ELEVATION: 2585 FT (788 M) ADVISORY NUMBER: 2004/012 INFORMATION SOURCE: GFS MODEL WINDS FORECAST. GOES-9 IMAGERY. ERUPTION DETAILS: ONGOING ASH AND/OR STEAM EMISSIONS OBS ASH DATE/TIME: 15/0902Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL050 MOVING TO W 15-20 KNOTS. FCST ASH CLOUD +6H: NOT AVBL FCST ASH CLOUD +12H: NOT AVBL FCST ASH CLOUD +18H: NOT AVBL REMARKS: NO ASH COULD BE DETECTED IN SATELLITE IMAGERY THROUGH 0902Z DUE TO CLOUD COVER. ...BROWN NEXT ADVISORY: WILL BE ISSUED BY 2004JUL15/1530Z NNNN