FVXX22 KWBC 280921 VOLCANIC ASH ADVISORY ISSUED: 2003JUN28/0830Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 LOCATION: N1621E14540 AREA: MARIANA ISLANDS SUMMIT ELEVATION: 2585 FT (788 M) ADVISORY NUMBER: 2003/201 INFORMATION SOURCE: GOES 9 IMAGERY. GUAM MWO. AIRCRAFT REPORT. GFS MODEL WINDS FORECAST. ERUPTION DETAILS: ASH AND GAS EMISSIONS SINCE MAY 10. OBS ASH DATE/TIME: 28/0725Z OBS ASH CLOUD: SFC/FL080 5 NM WIDE LINE OF ASH EXTENDING BETWEEN N1621E14540 N1605E14456. ASH IS MOVING W 15-20 KNOTS. FCST ASH CLOUD +6H: SEE SIGMETS. REMARKS: SATELLITE IMAGERY AT 28/0725Z SHOWS A VERY THIN PLUME OF ASH EXTENDING AROUND 45 NM WEST FROM THE SUMMIT. RECENT AIRCRAFT REPORTS ESTIMATE THE ASH TO FL080. THE GFS MODEL WINDS FORECAST CONFIRMS THIS HEIGHT....KIBLER NEXT ADVISORY: WILL BE ISSUED BY 2003JUN28/1430Z. NNNN