FVXX20 KWBC 241226 VOLCANIC ASH ADVISORY ISSUED: 2003DEC24/1230Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/643 INFORMATION SOURCE: GOES-12 IMAGERY. MODEL WINDS FORECAST. ERUPTION DETAILS: ASH EMISSIONS OBS ASH DATE/TIME: 24/1145Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/250 MOVING TO W 10-15 KNOTS. FCST ASH CLOUD+6H: NOT AVBL FCST ASH CLOUD+12H: NOT AVBL FCST ASH CLOUD+18H: NOT AVBL REMARKS: ASH CAN NOT BE DETECTED IN IMAGERY DUE TO EXTENSIVE CLOUD COVER OVER THE REGION. THE GEOPHYSICAL INSTITUTE YESTERDAY EVENING REPORTED A NEARLY CONSTANT EMISSION OF VAPOR AND ASH THAT WAS MOVING DOWNWIND FROM THE SUMMIT AND ESTIMATED BELOW FL220. NEXT ADVISORY: WILL BE ISSUED BY 2003DEC24/1830Z. NNNN