Many tornadoes which appear to have path lengths of 100 miles (160 km) or longer are composed of a family of tornadoes which have formed in quick succession; however, there is no substantial evidence that this occurred in the case of the Tri-State Tornado.
Moitos tornados que aparentan ter percorridos de 160 km ou máis en realidade son unha familia de tornados formados rápidamente de forma sucesiva; no entanto, non hai probas concretas de que isto ocorrese no caso do Tornado Triestatal.