FVXX20 KWBC 271846 VOLCANIC ASH ADVISORY ISSUED: 2003SEP27/1900Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/293 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. GEOPHYSICAL INSTITUTE. GUAYAQUIL MWO SIGMET. ERUPTION DETAILS: SERIES OF EMISSIONS STARTING AT 21/2345Z OBS ASH DATE/TIME: 27/1815Z OBS ASH CLOUD: ASH IS NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/240 MOVING SW 10-15 KNOTS. FCST ASH CLOUD+6H: SEE SIGMETS. REMARKS: THE ASH OBSERVED EARLIER HAS BECOME DIFFICULT TO SEE DUE TO CLOUDS OBSCURING THE VOLCANO. THE LATEST OBSERVATION OF ASH FROM THE INSTITUTE WAS AT 27/1315Z TO FL240. A HOT SPOT IS NO LONGER DETECTED IN MULTISPECTRAL IMAGERY. UPPER AIR WIND FORECASTS SUGGEST THAT ANY ASH SHOULD MOVE TO THE SOUTHWEST AT 10-15 KNOTS. NEXT ADVISORY: WILL BE ISSUED BY 2003SEP28/0100Z. NNNN