FVXX20 KWBC 110100 VOLCANIC ASH ADVISORY ISSUED: 2002MAR11/0100Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S7826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M). . ADVISORY NUMBER: 2002/137 . INFORMATION SOURCE: GOES-8 IMAGERY. GEOPHYSICAL INSTITUTE AND AVN MODEL WINDS FORECAST. . ERUPTION DETAILS: ASH OBSERVED AT 10/2051Z AND 10/2251Z . OBS ASH DATE/TIME: 11/0015Z. . OBS ASH CLOUD: SFC/FL230 MOVING W 10 TO 15 KNOTS ASH NOT IDENTIFIABLE FROM SATELLITE IMAGERY. . FCST ASH CLOUD+6H: SEE SIGMETS. . REMARKS: THE LATEST OBSERVATION OF ASH FROM THE GEOPHYSICAL INSTITUTE IS NOT OBSERVED IN SATELLITE IMAGERY. . NEXT ADVISORY: WILL BE ISSUED BY 2002MAR11/0700Z. . NNNN