FVXX20 KWBC 241020 VOLCANIC ASH ADVISORY ISSUED: 2002MAR24/1020Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S07826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M). . ADVISORY NUMBER: 2002/175 . INFORMATION SOURCE: GOES-8 IMAGERY. AVN MODEL WINDS FORECAST. GUAYAQUIL MWO SIGMET . ERUPTION DETAILS: NEARLY CONTINUOUS EMISSION OF GASES AND LIGHT ASH SINCE 20/2200Z. . OBS ASH DATE/TIME: 24/0716Z. . OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL250 MOVING SW TO W AROUND 10 KNOTS. . FCST ASH CLOUD+6H: SEE SIGMETS. . REMARKS: ASH NOT IDENTIFIABLE FROM IMAGERY THROUGH 24/0945Z DUE TO CLOUD COVER OVER REGION. GEOPHYSICAL INSTITUTE REPORT AT 0716Z IN SIGMET REPORTED ASH TO FL230 MOVING WEST. . NEXT ADVISORY: WILL BE ISSUED BY 2002MAR24/1630Z . NNNN