FVXX20 KWBC 041157 VOLCANIC ASH ADVISORY ISSUED: 2003SEP04/1155Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/208 INFORMATION SOURCE: GOES-12 IMAGERY. ERUPTION DETAILS: ONGOING ERUPTION SINCE 20/1745Z. OBS ASH DATE/TIME: 05/1115Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/200 MOVING W 15-20 KNOTS. FCST ASH CLOUD+6H: SEE SIGMETS AND VAFTAD. REMARKS: ASH HAS BECOME TOO DIFFUSE TO BE SEEN IN MULTISPECTRAL IMAGERY. ANY ASH SHOULD MOVE TOWARDS THE WEST UP TO FL200. WILL REASSESS AFTER VISIBLE IMAGERY BECOMES AVAILABLE. NEXT ADVISORY: WILL BE ISSUED BY 2003SEP04/1800Z. NNNN