FVXX22 KWBC 181224 VOLCANIC ASH ADVISORY ISSUED: 2003JUN18/1245Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 LOCATION: N1621E14540 AREA: MARIANA ISLANDS SUMMIT ELEVATION: 2585 FT (788 M) ADVISORY NUMBER: 2003/162 INFORMATION SOURCE: GOES-9 IMAGERY. GFS MODEL WINDS FORECAST. ERUPTION DETAILS: CONTINUOUS ASH AND GAS EMISSIONS SINCE MAY 10. OBS ASH DATE/TIME: 18/0602Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL090 MOVING W 15-20 KNOTS. FCST ASH CLOUD +6H: SEE SIGMETS. REMARKS: WEATHER CLOUDS STILL COVER THE SUMMIT AREA OBSCURING DETECTION OF ANY ASH CLOUD AT THIS TIME. HOWEVER...CLOUDS DO APPEAR TO BE BREAKING UP A BIT SO DETECTION MAY BECOME EASIER AS THE DAY PROGRESSES. WILL SEND AN EARLY UPDATE VAA IF ASH BECOMES DETECTABLE BEFORE 1845Z...GALLINA NEXT ADVISORY: WILL BE ISSUED BY 2003JUN18/1845Z. NNNN