FVXX22 KWBC 131840 VOLCANIC ASH ADVISORY ISSUED: 2003JUN13/1900Z VAAC: WASHINGTON VOLCANO: ANATAHAN 0804-20 LOCATION: N1621E14540 AREA: MARIANA ISLANDS SUMMIT ELEVATION: 2585 FT (788 M) ADVISORY NUMBER: 2003/143 INFORMATION SOURCE: GOES-9 IMAGERY. GFS MODEL WINDS FORECAST. ERUPTION DETAILS: CONTINUOUS ASH AND GAS EMISSIONS SINCE MAY 10. OBS ASH DATE/TIME: 13/1802Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL080 MOVING W 5-10 KNOTS. FCST ASH CLOUD +6H: SEE SIGMETS. REMARKS: WEATHER CLOUDS IN THE AREA HAVE COVERED THE VOLCANO SUMMIT AND THE SURROUNDING REGION TO THE WEST WHERE ASH MAY BE AT THIS TIME. THE ASH SEEN EARLIER HAS SINCE DISSIPATED OR HAS BECOME TO DIFFUSE TO BE DETECTED IN MULTI-SPECTRAL IMAGERY. THERE HAVE BEEN NO INDICATIONS THAT THE ACTIVITY AT THE SUMMIT HAS DECREASED...GALLINA NEXT ADVISORY: WILL BE ISSUED BY 2003JUN14/0100Z. NNNN