FVXX20 KWBC 121200 VOLCANIC ASH ADVISORY ISSUED: 2002MAR12/1200Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S7826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M). . ADVISORY NUMBER: 2002/143 . INFORMATION SOURCE: GOES-8 IMAGERY. GUAYAQUIL MWO SIGMETS. AVN MODEL WINDS FORECAST. . ERUPTION DETAILS: ASH OBSERVED AT 11/1110Z AND 11/1200Z. . OBS ASH DATE/TIME: 11/1200Z. . OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL300 MOVING NW 10-20 KNOTS. . FCST ASH CLOUD+6H: SEE SIGMETS. . REMARKS: SIGMETS REPORTED ASH FL165/FL270 AT 11/1110Z AND ASH OVER VOLCANO AT 11/1200Z. NO ASH CAN BE SEEN IN SATELLITE IMAGERY THROUGH 12/1145Z BUT LOW LEVEL WEATHER CLOUDS MIGHT BE HINDERING ASH DETECTION. . NEXT ADVISORY: WILL BE ISSUED BY 2002MAR12/1800Z. . NNNN