FVXX20 KWBC 180040 VOLCANIC ASH ADVISORY ISSUED: 2003OCT18/0045Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/380 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. GUAYAQUIL MWO SIGMET ERUPTION DETAILS: EXHALATION AT 17/1715Z. OBS ASH DATE/TIME: 10/0015Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE IMAGERY. WINDS FL160/FL200 MOVING N 5-10 KNOTS. FCST ASH CLOUD+6H: SEE SIGMETS REMARKS: NO HOTSPOT SEEN ON MULTISPECTRAL IMAGERY. LAST EVIDENCE OF ASH WAS OBSERVED ON 2315Z IMAGE ABOUT 60 NMI TO THE NW OF THE SUMMIT. MOST RECENT SIGMET FROM GROUND STATION SERB AT 2100Z HAD ASH CLOUD OVER STATION AT FL160 MOVING SW. HOWEVER, ANY EVIDENCE OF ASH CANNOT BE SEEN CURRENTLY IN SATELLITE IMAGERY THROUGH 18/0015Z. BALDWIN NEXT ADVISORY: WILL BE ISSUED BY 2003OCT18/0645Z. NNNN