FVXX20 KWBC 281655 VOLCANIC ASH ADVISORY ISSUED: 2003NOV28/1700Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/542 INFORMATION SOURCE: GOES-12 IMAGERY. AVN MODEL WINDS FORECAST. GUAYAQUIL MWO SIGMET. ERUPTION DETAILS: OCCASIONAL ASH EMISSIONS OBS ASH DATE/TIME: 28/1615Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/230 MOVING TO SW 15-20 KNOTS. FCST ASH CLOUD+6H: NOT AVBL FCST ASH CLOUD+12H: NOT AVBL FCST ASH CLOUD+18H: NOT AVBL REMARKS: EXTENSIVE CLOUD COVER IN THE VICINITY OF THE VOLCANO MAKES IT DIFFICULT TO DETECT ASH. THE LAST OBSERVATION OF ASH WAS BY THE GEOPHYSICAL INSTITUTE AT 27/2215Z WITH ASH TO FL230 MOVING W TO SW. NEXT ADVISORY: WILL BE ISSUED BY 2003NOV28/2300Z. NNNN