FVXX20 KWBC 180200 VOLCANIC ASH ADVISORY ISSUED: 2003DEC18/0200Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/619 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. GEOPHYSICAL INSTITUTE. GUAYAQUIL MWO SIGMET. ERUPTION DETAILS: ASH EMISSIONS AT 17/1330Z OBS ASH DATE/TIME: 18/0045Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/260 MOVING TO W 15-25 KNOTS. FCST ASH CLOUD+6H: NOT AVBL FCST ASH CLOUD+12H: NOT AVBL FCST ASH CLOUD+18H: NOT AVBL REMARKS: THE GEOPHYSICAL INSTITUTE OBSERVED ASH TO FL260 AT 17/2113Z. SATELLITE IMAGERY DOES NOT INDICATE ANY ASH DUE TO EXTENSIVE CLOUDS IN THE VICINITY OF THE VOLCANO THROUGH 0045Z. TURK NEXT ADVISORY: WILL BE ISSUED BY 2003DEC18/0800Z. NNNN