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.
- Genre: Action, Adventure, Drama
- Studio: Universal Pictures, Amblin Entertainment, Warner Bros. Pictures, Constant c Productions, Twister Productions
- Keyword: husband wife relationship, tornado, twister, oklahoma, metereologist, invention, climate, barn, natural disaster, truck, disaster, storm chaser, divorce, disaster movie, motley crew
- Cast: Helen Hunt, Bill Paxton, Cary Elwes, Jami Gertz, Philip Seymour Hoffman, Lois Smith