FVXX20 KWBC 182350 VOLCANIC ASH ADVISORY ISSUED: 2002JUL18/2350Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2002/331 . INFORMATION SOURCE: GOES-8 IMAGERY. GUAYAQUIL MWO SIGMET. AVN MODEL WINDS FORECAST. GEOPHYSICAL INSTITUTE. . ERUPTION DETAILS: ASH OBSERVED AT 18/1647Z. . OBS ASH DATE/TIME: 18/2141Z. . OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL1650/FL200 MOV W UP TO 10 KTS . FCST ASH CLOUD+6H: SEE SIGMETS. . REMARKS: THE GEOPHYSICAL INSTITUTE REPORTS ASH FROM FL165/200 MOVING W. ASH IS NOT IDENTIFIABLE FROM SATELLITE DATA THROUGH 18/2315Z DUE TO EXTENSIVE CLOUDS ACROSS THE REGION. . NEXT ADVISORY: WILL BE ISSUED BY 2002JULY19/0600Z . NNNN