The UHG- (70.5 cm wavelength) and S-band (10 cm wavelength) radars at NASA Goddard Space Flight Center/Wallops Flight Facility in Virginia have been used to relate lightning activity to altitude and to the reflectivity structure of a thunderstorm. Two centers of lightning flash density were found, one between 6 and 8 km altitude and another between 11 and 15 km. Our observations show a tendency for lightning to be within the high reflectivity region and ahead of it in the less intense precipitation at the leading edge of the storm.