FVXX22 KWBC 221858 VOLCANIC ASH ADVISORY ISSUED: 2003JUN22/1900Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 LOCATION: N1621E14540 AREA: MARIANA ISLANDS SUMMIT ELEVATION: 2585 FT (788 M) ADVISORY NUMBER: 2003/179 INFORMATION SOURCE: NOAA16 IMAGERY. GUAM MWO. GFS MODEL WINDS FORECAST. ERUPTION DETAILS: CONTINUOUS ASH AND GAS EMISSIONS SINCE MAY 10. OBS ASH DATE/TIME: 22/1640Z OBS ASH CLOUD: SFC/FL080 10 NM WIDE LINE OF ASH BETWEEN N1621E14540 N1627E14507 MOVING WEST 10-15 KNOTS. FCST ASH CLOUD +6H: SEE SIGMETS. REMARKS: BASED ON NOAA16 DATA. CLOUDS IN THE AREA OBSCURE ANY ASH THAT MIGHT BE FURTHER WEST. NEXT ADVISORY: WILL BE ISSUED BY 2003JUN23/0100Z. NNNN