A storm-chaser and her estranged husband are brought together in a joint project to monitor the path of an oncoming tornado - but the pair face a race against the clock as a rival government-backed group with hi-tech resources tries to beat them to it. Action thriller, starring Helen Hunt, Bill Paxton, Cary Elwes, Jami Gertz and Philip Seymour Hoffman.

An unprecedented series of violent tornadoes is sweeping across Oklahoma. Tornado chasers, headed by Dr. Jo Harding, attempt to release a groundbreaking device that will allow them to track them and create a more advanced warning system. They are joined by Jo's soon to be ex-husband Bill, a former tornado chaser himself, and his girlfriend Melissa.