Corrected entry: At the part when they are driving in the car (near the climax scene of the big tornado) the weather radio in the car is issuing alerts about the big "F5" tornado on the ground nearby. That is a huge mistake, because there is no way to know that until a survey is done of the tornado damage afterwards. Only then can a tornado be called an "F5" or "F3".
Mad Ade
17th May 2006
Twister (1996)
Correction: Announcer was Gary England; who is a very well known meteorologist out of Oklahoma.
Correction: More of a character mistake than a movie mistake. The radio anouncer probably knew it was a huge twister and incorrectly pronounced it an "F5" before it could be correctly classified later.
Mad Ade