FVXX20 KWBC 120000 VOLCANIC ASH ADVISORY ISSUED: 2002MAR12/0000Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S7826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M). . ADVISORY NUMBER: 2002/141 . INFORMATION SOURCE: GOES-8 IMAGERY. GUAYAQUIL MWO SIGMET. AVN MODEL WINDS FORECAST. . ERUPTION DETAILS: ASH TO FL270 OBSERVED AT 11/1110Z. . OBS ASH DATE/TIME: 11/1200Z. . OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL300 MOVING WNW 15 TO 20 KNOTS. . FCST ASH CLOUD+6H: SEE SIGMETS. . REMARKS: SIGMET REPORTED ASH OVER VOLCANO AT 1200Z. PREVIOUS INFORMATION PLACED ASH BETWEEN FL165/FL270. EXTENSIVE CLOUDINESS IN THE REGION IS PREVENTING ANY ASH DETECTION IN SATELLITE IMAGERY THROUGH 11/2315Z. ANALYST RUMINSKI . NEXT ADVISORY: WILL BE ISSUED BY 2002MAR12/0600Z. . NNNN