The Coriolis Effect (1994)

Two young lovers Ray and Suzy are split apart by the revelation of Suzy's one night stand with Ray's best friend, and fellow storm chaser, Stanley. Both friends operate a Toteable Tornado Observatory ("Toto" for short) in a pickup truck. Before Ray and Suzy can resolve their issues, Ray is called away to chase the biggest tornado producing storm to hit Texas in a century along with Stanley. As they race towards the storm, arguing and fighting with each other, they come across a mysterious woman named Ruby, who changes the course of their destiny and scramble their senses and lives.

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