FVXX22 KWBC 131854 VOLCANIC ASH ADVISORY ISSUED: 2003JUL13/1900Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 LOCATION: N1621E14540 AREA: MARIANA ISLANDS SUMMIT ELEVATION: 2585 FT (788 M) ADVISORY NUMBER: 2003/264 INFORMATION SOURCE: GOES 9 IMAGERY. GFS MODEL WINDS FORECAST. ERUPTION DETAILS: ASH AND GAS EMISSIONS SINCE MAY 10. OBS ASH DATE/TIME: 13/1825Z. OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL080 MOVING W 10-15 KNOTS. FCST ASH CLOUD +6H: SEE SIGMETS. REMARKS: NO ASH IS VISIBLE IN INFRARAD OR MULTISPECTRAL IMAGERY. NEXT ADVISORY: WILL BE ISSUED BY 2003JUL14/0100Z. NNNN