FVXX20 KWBC 112153 VOLCANIC ASH ADVISORY ISSUED: 2004JAN11/2200Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2004/035 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. GEOPHYSICAL INSTITUTE. GUAYAQUIL MWO SIGMET ERUPTION DETAILS: GAS AND ASH EMISSIONS. OBS ASH DATE/TIME: 11/2115Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/220 MOVING TO E 10-15 KNOTS. FCST ASH CLOUD+6H: NOT AVBL FCST ASH CLOUD+12H: NOT AVBL FCST ASH CLOUD+18H: NOT AVBL REMARKS: THE ASH PLUME OBSERVED EARLIER MOVING TO THE EAST HAS BECOME DIFFICULT TO DETECT DUE TO CLOUDS. ACCORDING TO UPPER AIR FORECASTS ANY ASH TO FL220 SHOULD MOVE TO THE EAST AT 10-15 KNOTS. NEXT ADVISORY: WILL BE ISSUED BY 2003JAN12/0400Z NNNN