Measurements were made of the radio emissions (atmospherics) from a severe local storm which produced three tornadoes in west Texas on June 2, 1974. The radio data were obtained at a frequency of 58 MHz and were analyzed to determine the pulse rate and the frequency spectrum of the pulse envelopes. The pulse rate was highly variable during the largest tornado, in contrast to the smooth increase as the storm was initially building. Radar data showed a characteristic hook echo. |