FVXX20 KWBC 180100 VOLCANIC ASH ADVISORY ISSUED: 2002FEB18/0100Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S7826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M). . ADVISORY NUMBER: 2002/079 . INFORMATION SOURCE: GOES-8 IMAGERY. AVN MODEL WINDS FORECAST. GEOPHYSICAL INSTITUTE . ERUPTION DETAILS: ERUPTION AROUND 18/0005Z. . OBS ASH DATE/TIME: 18/0005Z . OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. . FCST ASH CLOUD+6H: SEE SIGMETS. . REMARKS: THE GEOPHYSICAL INSTITUTE OBSERVED VOLCANIC ASH OVER THE VOLCANO BUT HEIGHT IS UNKNOWN AND DIRECTION OF MOVEMENT IS UNKNOWN. . NEXT ADVISORY: NO FURTHER ADVISORIES . NNNN