In this video segment adapted from NOVA, scientists are on the hunt for tornadoes. Using Doppler radar, they gather data in the hopes of solving the mystery of how tornadoes form. [5:21]

This montage of powerful F5 tornadoes shows the incredible damage they cause as they make their way through tornado alley and other parts of the USA. [1:23]

EstuaryLIVE meteorologists explain how a tornado forms, how it moves, and how to measure potential damage from these dangerous storms. [10:16]