FVXX22 KWBC 0413490 VOLCANIC ASH ADVISORY ISSUED: 2003JUL04/1400Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 LOCATION: N1621E14540 AREA: MARIANA ISLANDS SUMMIT ELEVATION: 2585 FT (788 M) ADVISORY NUMBER: 2003/226 INFORMATION SOURCE: GOES 9 IMAGERY. UPPER AIR SOUNDING. GFS MODEL WINDS FORECAST. GUAM MWO ERUPTION DETAILS: ASH AND GAS EMISSIONS SINCE MAY 10. OBS ASH DATE/TIME: 04/1302Z. OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL080 MOVING NW 10-15 KNOTS. FCST ASH CLOUD +6H: SEE SIGMETS. REMARKS: ASH COULD NOT BE DETECTED IN GOES-9 SATELLITE IMAGERY THROUGH 04/1302Z DUE TO EXTENSIVE CLOUD COVER. THE GUAM MET OFFICE COULD NOT SEE ASH IN DMSP IMAGERY DUE TO CLOUD COVER ACROSS ANATAHAN...KIBLER NEXT ADVISORY: WILL BE ISSUED BY 2003JUL04/2000Z. NNNN