FVXX20 KWBC 280444 VOLCANIC ASH ADVISORY ISSUED: 2003NOV28/0500Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/540 INFORMATION SOURCE: GOES-12 IMAGERY. AVN MODEL WINDS FORECAST. GUAYAQUIL MWO SIGMET. ERUPTION DETAILS: OCCASIONAL ASH EMISSIONS OBS ASH DATE/TIME: 28/0415Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/230 MOVING TO SW 15 KNOTS. FCST ASH CLOUD+6H: NOT AVBL FCST ASH CLOUD+12H: NOT AVBL FCST ASH CLOUD+18H: NOT AVBL REMARKS: THE MOST RECENT KNOWN ASH OBSERVATION WAS AT 27/2251Z WHEN THE GEOPHYSICAL INSTITUTE OBSERVED ASH FL165/230 MOVING W/SW. NO ASH OR HOTSPOTS CAN BE SEEN IN SATELLITE IMAGERY THROUGH 28/0415Z BUT LOW LEVEL WEATHER CLOUDS MIGHT BE HINDERING ASH DETECTION. NEXT ADVISORY: WILL BE ISSUED BY 2003NOV28/1100Z. NNNN