Tornado Family

Often mistaken for single long track tornadoes, a tornado family is a series of tornadoes which occur along a similar path. Spawned by the same supercell, these families can cover a short span or a vast distance. Sometimes evidenced by breaks in the damage path, expert analysis is necessary to determine whether or not damage was created by a family or a single tornado. In some cases, different tornadoes of a tornado family merge, making discerning whether an event was continuous or not even more difficult.
See more at Wikipedia.org...

A series of tornadoes produced by a single supercell , resulting in damage path segments along the same general line.