Continuity: In the very opening scene where Jo is just a baby and her dad and mom are carrying her and running from the house to enter the storm shelter, the tornado is just 60 seconds or so from destroying their house and sucking Jo's dad away. If you look at the trees behind them as they are running, you can see the trees are barely moving from any wind at all. If a real tornado was that close, the trees would be half bent over from the 60-100+ mph wind.

Continuity: When they are chasing the second tornado, Bill Paxton says something about the tornado being a sidewinder and brakes suddenly, allowing the "bad" corporate team to go past them. However, the six-car "bad" team takes almost thirty seconds to overtake them; indeed, you see the same cars pass Paxton's car two or three times.

Continuity: When they all go to Meg's to eat, the gravy is set down in front of Melissa and Dusty. Dusty picks up the bowl, tells her to she has to have it, and spoons gravy on to her potatoes - but you can see that she already has gravy on her potatoes.

Factual error: Near the beginning, when we see Bill and Jo in Jo's truck driving in an off-road ditch being "chased" by a tornado, there is a shot where we see the tornado dismantle a barn. In real life, you wouldn't be able to see it dismantle the barn board by board. The tornado would actually cover the barn, and when it leaves, you would see the barn in desolation.

Continuity: When Jo, Melissa and Bill are in his car, they see Jonas wave from his car. Just before this had happened, Jonas looked in his rear view mirror. He only saw a red car with a background of a paved street. Where is the rest of Jo and Bill's crew?

Continuity: In the scene where Bill, Jo, and Bill's therapist fiancée are in Bill's red truck and about to be engulfed in the tornado where the cows are flying around, the fiancé's cell phone is ringing for about the fifth time in as many minutes. The fiancée answers the phone with a disgusted look on her face like she resents having to answer the phone during such a dangerous time. If you were close enough to a tornado and about to be engulfed in it you certainly wouldn't answer a phone let alone be able to hear it ring amongst the noise of all the wind.

Continuity: If the base of the twister at the end of the movie is a mile wide, and while attached to the pipes they see the center of the tornado, and the wide view of the two of them hanging on to the pipes after the tornado passes show they are about twenty yards from the house, logic would follow that the house would be taken also, wouldn't it?