In 2017, the United States saw several destructive tornado families, where multiple twisters formed from the same storm systems and struck in quick succession. One of the most significant events came during late April into early May, when powerful supercells in Texas, Oklahoma, and Kansas spawned long-tracked tornadoes that continued into Missouri, Arkansas, and Mississippi. The April 28–30 outbreak alone produced more than 70 tornadoes, including several rated EF3 and EF4, devastating towns, fa