South Dakota's Tornado Alley region includes much of the Sioux Empire in the southeast of the state. If you live in one of these 10 counties there's a pretty good chance of being near a tornado.
Greenfield, Iowa was hit by an EF4 tornado back in May. That tornado must have picked up corn seeds and several of them landed on lawns in the torn up town of Greenfield.
Six people died and nearly a whole town was destroyed by one of the deadliest tornados in South Dakota history. Remember the Spencer tornado with these videos.