A violent storm system that swept the nation over the weekend delivered an unusually powerful punch, spinning up more than 50 tornadoes, fanning wildfires and killing at least 42 people.

AP Photo/Mike Gullett The Joplin tornado became one of the deadliest twisters in United States history when it tore through a small city in southwestern Missouri in 2011. By the time the storm ...

Cross-country storm leaves at least 42 dead and vast destruction from tornadoes, wildfires ...

The tornado that raged through Joplin, Missouri 14 years ago is the subject of a new Netflix documentary. "The Twister: ...