FVXX20 KWBC 201400 VOLCANIC ASH ADVISORY ISSUED: 2002SEP20/1345Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2002/447 . INFORMATION SOURCE: GOES-8 IMAGERY. GUAYAQUIL MWO SIGMET. AVIATION MODEL WIND FORECAST. . ERUPTION DETAILS: CONTINUOUS ASH EMISSIONS. . OBS ASH DATE/TIME: 20/1225Z. . OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL230 MOVING NW 15-20 KNOTS. . FCST ASH CLOUD+6H: SEE SIGMETS AND VAFTAD. . REMARKS: ASH CANNOT BE SEEN IN SATELLITE IMAGERY THROUGH 1315Z BUT THERE ARE SOME WEATHER CLOUDS IN THE AREA THAT MIGHT BE OBSCURING ASH. A SIGMET CITES A 1225Z AIRCRAFT OBSERVATION OF WESTWARD MOVING VOLCANIC ASH FL165/230 . NEXT ADVISORY: WILL BE ISSUED BY 2002SEP20/2000Z. . NNNN