This television film was inspired by a real-life near disaster that had taken place on June 24. 1998, when an F2 tornado hit the Davis-Besse Nuclear Power Station in Ohio resulting in the loss of off-site power. Despite that, the film bears no resemblance to the actual events at Davis-Besse.
I so rarely get to reference this “so bad it’s good” made-for-TV movie: https://en.wikipedia.org/wiki/Atomic_Twister
I’ve seen that one! I vaguely remember not being blown away, but also thinking it wasn’t as terrible as I was expecting going into it.