Twister

Twister is a 1996 disaster film starring Helen Hunt and Bill Paxton as storm chasers researching tornadoes. It was directed by Jan de Bont. The film was based upon a script by Michael Crichton and his wife, former actress Anne-Marie Martin.In the movie, a team of "storm chasers" try to perfect a data-gathering instrument, designed to be released into the funnel of a tornado, while competing with another better-funded team with a similar device.
June 1969- The film starts in a rural farm, as a severe thunderstorm hits. (They did not feature any downpours of rain in the beginning, just threatening skies and lightning.) Jo's father is watching a TV news report about a tornado warning for Oklahoma County. His wife quickly awakens their daughter, Jo ,and all 3 take off for the storm cellar as a tornado hits the family farm. As lightning flashes all around them, one bolt hits a tree; sending branches crashing to the ground and chickens running. Once inside, his daughter screams that the family dog is still outside, and Jo's father opens the cellar door just in time to let him in. As Jo's mother lights a candle, the twister makes a direct hit on the cellar. The twister turns out to be too powerful, and after a struggle, it rips the door off—which takes Joe's father with it—into the vortex while Jo and her mother scream in horror. Daylight reveals that the tornado destroyed everything it touched.