FVXX20 KWBC 230800 VOLCANIC ASH ADVISORY ISSUED: 2002MAR23/0800Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S07826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M). . ADVISORY NUMBER: 2002/170 . INFORMATION SOURCE: GOES-8 IMAGERY. AVN MODEL WINDS FORECAST. GUAYAQUIL MWO SIGMET. . ERUPTION DETAILS: NEARLY CONTINUOUS EMISSION ON GASES AND LIGHT ASH SINCE 20/2200Z. . OBS ASH DATE/TIME: 22/2250Z. . OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FORECAST FL165/FL250 MOVING W AROUND 10 KNOTS. . FCST ASH CLOUD+6H: SEE SIGMETS. . REMARKS: THE REGION IS OBSCURED BY CLOUDS PRECLUDING THE DETECTION OF ASH THROUGH 23/0745Z. . NEXT ADVISORY: WILL BE ISSUED BY 2002MAR23/1400Z . NNNN