A Dual Doppler Radar Image of an F5 Tornado

This is a dual Doppler radar image of an F5 tornado near Moore, Oklahoma, on May 3, 1999. The left image (reflectivity) shows precipitation in the supercell thunderstorm. The right image shows motion of the precipitation along the radar beam, that is, how fast rain or hail are moving toward or away from the radar. In this example, the radar was unusually close to the tornadoŚclose enough to make out the signature of the tornado itself (most of the time only the weaker and larger mesocyclone is detected).