TV weatherman Bill Harding(Bill Paxton) is trying to get his tornado-hunter wife, Jo((Helen Hunt), to sign divorce papers so he can marry his girlfriend Melissa(Jami Gertz). But Mother Nature, in the form of a series of intense storms sweeping across Oklahoma, has other plans. Soon the three have joined the team of stormchasers as they attempt to insert a revolutionary measuring device into the very heart of several extremely violent tornados.
