FVXX20 KWBC 231400 VOLCANIC ASH ADVISORY ISSUED: 2002MAR23/1400Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S07826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M). . ADVISORY NUMBER: 2002/171 . INFORMATION SOURCE: GOES-8 IMAGERY. AVN MODEL WINDS FORECAST. GUAYAQUIL MWO SIGMET. . ERUPTION DETAILS: EMISSION OF ASH AND STEAM . OBS ASH DATE/TIME: 23/1315Z. . OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL250 MOVING W 10 KNOTS. . FCST ASH CLOUD+6H: SEE SIGMETS. . REMARKS: LOW CLOUDS COVER THE AREA AROUND THE VOLCANO MAKING IT DIFFICULT TO DETECT ANY ASH OR STEAM. . NEXT ADVISORY: WILL BE ISSUED BY 2002MAR23/2000Z . NNNN