FVXX20 KWBC 241921 VOLCANIC ASH ADVISORY ISSUED: 2003OCT24/1930Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/408 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. ERUPTION DETAILS: CONTINUED ASH AND STEAM EXHALATIONS. OBS ASH DATE/TIME: 24/1845Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/230 MOVING SW 15-20 KNOTS. FCST ASH CLOUD+6H: SEE SIGMETS REMARKS: ASH CAN NOT BE SEEN IN THE SATELLITE IMAGERY THROUGH 24/1845Z. THE LAST OBSERVATION OF ASH WAS AT 24/1500Z WITH ASH OBSERVED TO FL230....WALTER NEXT ADVISORY: WILL BE ISSUED BY 2003OCT25/0130Z. NNNN