The crossword solution for the term 'Tornado Relative' is 'WATERSPOUT, ' which is a weather phenomenon consisting of a rotating column of air and water droplets. Waterspouts are usually classified as either tornadic or fair-weather, with the former being more intense and destructive than the latter. Tornadic waterspouts are related to tornadoes, as they form in the same way and have similar characteristics. Fair-weather waterspouts, on the other hand, are generally weaker and form in areas of light wind and low pressure.