FVXX22 KWBC 091841 VOLCANIC ASH ADVISORY ISSUED: 2003JUL09/1900Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 LOCATION: N1621E14540 AREA: MARIANA ISLANDS SUMMIT ELEVATION: 2585 FT (788 M) ADVISORY NUMBER: 2003/248 INFORMATION SOURCE: GOES 9 IMAGERY. GFS MODEL WINDS FORECAST ERUPTION DETAILS: ASH AND GAS EMISSIONS SINCE MAY 10. OBS ASH DATE/TIME: 09/1802Z. OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL080 MOVING SW 10-15 KNOTS. FCST ASH CLOUD +6H: SEE SIGMETS. REMARKS: ASH NOT IDENTIFIABLE FROM SATELLITE DATA DUE TO ASH IS VERY LOW IN HEIGHT AND IT CAN BE DIFFICULT TO DETECT AT NIGHT...GALLINA NEXT ADVISORY: WILL BE ISSUED BY 2003JUL10/0100Z. NNNN