Tornado Prom from "This American Life."

While the seniors danced at Prom Night 2001 in Hoisington, Kansas—a town of about 3,000—a tornado hit the town, destroying about a third of it. When they emerged from the dance, they discovered what had happened, and in the weeks that followed, they tried to explain to themselves why the tornado hit where it did.

2001 Hoisington, Kansas tornado.