FVXX20 KWBC 262327 VOLCANIC ASH ADVISORY ISSUED: 2003OCT26/2330Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/417 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. GUAYAQUIL MWO SIGMET ERUPTION DETAILS: CONTINUED ASH AND STEAM EXHALATIONS. OBS ASH DATE/TIME: 26/2245Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA WINDS FL100/240 MOVING NW 10-15 KNOTS. FCST ASH CLOUD+6H: SEE SIGMETS REMARKS: A VERY THIN AND NARROW PLUME WAS VISIBLE IN THE 1915Z IMAGE EXTENDING ABOUT 15 NM WEST NORTHWEST OF THE VOLCANO. ASH IS NO LONGER VISIBLE IN SATELLITE DATA THROUGH 26/2245Z DUE TO EXTENSIVE WEATHER CLOUDS. NEXT ADVISORY: WILL BE ISSUED BY 2003OCT27/0530Z. NNNN