FVXX20 KWBC 241630 VOLCANIC ASH ADVISORY ISSUED: 2002MAR24/1630Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S07826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M). . ADVISORY NUMBER: 2002/176 . 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: 24/1545Z. . OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL250 MOVING SW 10 KNOTS. . FCST ASH CLOUD+6H: SEE SIGMETS. . REMARKS: THE LAST OBSERVED ASH FROM THE GEOPHYSICAL INSTITUTE WAS AT 0716Z TO FL230. LOW CLOUDS COVER THE REGION AROUND THE VOLCANO MAKING IT DIFFICULT TO DETECT ASH FROM SATELLITE DATA. . NEXT ADVISORY: WILL BE ISSUED BY 2002MAR24/2230Z . NNNN