FVXX20 KWBC 280030 VOLCANIC ASH ADVISORY ISSUED: 2003SEP28/0100Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/294 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: 28/0015Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/310 MOVING SW 10-15 KNOTS. FCST ASH CLOUD+6H: SEE SIGMETS. REMARKS: THE LATEST OBSERVATION OF ASH FROM THE INSTITUTE WAS AT 27/2021Z TO FL310. UPPER AIR WIND FORECASTS SUGGEST THAT ANY ASH SHOULD MOVE TO THE SOUTHWEST AT 10-15 KNOTS. CLOUDS IN THE VICINITY OF THE VOLCANO MAKE IT DIFFICULT TO DETECT ANY ASH FROM SATELLITE IMAGERY. NEXT ADVISORY: WILL BE ISSUED BY 2003SEP28/0700Z. NNNN