FVXX22 KWBC 211931 - CCA VOLCANIC ASH ADVISORY - CORRECTION ISSUED: 2003JUN21/1915Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 LOCATION: N1621E14540 AREA: MARIANA ISLANDS SUMMIT ELEVATION: 2585 FT (788 M) ADVISORY NUMBER: 2003/175 INFORMATION SOURCE: N16 IMAGERY MWO GUAM. GFS MODEL WINDS FORECAST. ERUPTION DETAILS: CONTINUOUS ASH AND GAS EMISSIONS SINCE MAY 10. OBS ASH DATE/TIME: 21/1648Z OBS ASH CLOUD: SFC/FL080 10 NM WIDE LINE OF ASH EXTENDING BETWEEN N1621E14540 N1623E14527 MOVING WEST AT 10-15 KNOTS. FCST ASH CLOUD +6H: SEE SIGMETS. REMARKS: BASED ON NOAA 16 PASS AS REPORTED BY GUAM MWO. CORRECTED FOR LAT LON POINT NEXT ADVISORY: WILL BE ISSUED BY 2003JUN22/0100Z. NNNN