FVXX22 KWBC 081541 VOLCANIC ASH ADVISORY ISSUED: 2003JUL08/1600Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 LOCATION: N1621E14540 AREA: MARIANA ISLANDS SUMMIT ELEVATION: 2585 FT (788 M) ADVISORY NUMBER: 2003/243 INFORMATION SOURCE: GOES 9 IMAGERY. GFS MODEL WINDS FORECAST. PILOT REPORTS. ERUPTION DETAILS: ASH AND GAS EMISSIONS SINCE MAY 10. OBS ASH DATE/TIME: 08/1502Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL080 MOVING SW 15 KNOTS. FCST ASH CLOUD +6H: SEE SIGMETS REMARKS: THE GUAM MWO RELAYED A 0600Z PILOT REPORT OF THICK PLUME OF ASH AT FL030 BUT IT DID NOT EXTEND FAR FROM THE SUMMIT. A LATER PILOT REPORT NEAR 1100Z INDICATED NO ASH COULD BE SEEN. THIS HAS BEEN A SIMILAR PATTERN FOR THE PAST COUPLE OF DAYS...WHERE ASH CAN BE SEEN NEAR SUMMIT AND QUICKLY DISSIPATES TO THE WEST. THRU 1502Z SATELLITE IMAGERY DID NOT INDICATE ANY ASH. WINDS IN THE AREA ARE MOVING SSW AT ABOUT 15 KNOTS. WILL CONTINUE TO MONITOR...GALLINA NEXT ADVISORY: WILL BE ISSUED BY 2003JUL08/2200Z. NNNN