Audio problem: When the two storm chasing crews have stopped at the Hot Pit Bar-B-Q, in the shot where Bill runs over to beat up Jonas for supposedly stealing his design for Dorothy, Jonas's mouth is not moving and yet we hear him continuing to talk about DOT 3. (00:19:45)
Audio problem: When Dusty is yelling for Melissa to look at the camera shot, he says "oh my God, oh my God." His mouth doesn't match up. He looks to be saying something far worse.
Suggested correction: The scale back then was based on the size of the tornado, it's only more recently it is based on damage. So during the time of the movie, the scale was being used correctly for size not damage.
The Fujita scale was introduced in 1971 and was in use during the 90's when this film came out. The Fujita scale measured the damage caused by a tornado to man-made structures after ground or aerial surveys, it was not a measurement of tornado size (an F5 tornado is a tornado that's rated on the Fujita scale). It is true the Fujita scale was replaced by the enhanced Fujita scale in 2007, but that was only to align the ratings to the damage better, it did not change rating tornadoes from size to destructive powers.
Bishop73