FVXX20 KWBC 041230 VOLCANIC ASH ADVISORY ISSUED: 2002AUG04/1230Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2002/372 . INFORMATION SOURCE: GOES-8 IMAGERY. AVN MODEL WINDS FORECAST. GUAYAQUIL MWO SIGMET. . ERUPTION DETAILS: REPORT OF ASH 04/1111Z. . OBS ASH DATE/TIME: 04/1111Z . OBS ASH CLOUD: SFC/FL200 5 NM WIDE LINE OF ASH EXTENDING BETWEEN S0128W07826 S0125W07841. ASH MOVING W 30 KNOTS. . FCST ASH CLOUD+6H: SEE SIGMETS. . REMARKS: SATELLITE IMAGERY THROUGH 04/1215Z SHOWS A POSSIBLE FAINT NARROW PLUME EXTENDING TO THE WEST AWAY FROM THE SUMMIT. UNCERTAINTY OF PLUME IS DUE TO THE EXTENSIVE CLOUD COVER IN THE REGION WHICH IS MAKING DETECTION DIFFICULT....WALTER. . NEXT ADVISORY: WILL BE ISSUED BY 2002AUG04/1830Z. . NNNN