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)
Continuity mistake: When the red truck is driving to the tornado where the sensors spill, the scenery and pavement change between shots. First, they are driving down a road with trees on both sides. Then, they are driving down a large empty area where you can see the the horizon. Finally, they drive into a valley with forests on both sides. And this happens in a matter of seconds.
Continuity mistake: In the first sequence, they family is in the house with the child in bed. It looks to be night. When they run from the house to the shelter, they scatter a flock of chickens. Chickens don't go outside after dark... Even during eclipses and such...
Other mistake: The order of action performed to activate Dorothy 2 (jumping tornado scene) and 4 (F5 tornado scene) is reversed. Also, Bill somehow has more switches to flip. Jo pressed a button, flipped a couple switches and then told Bill Dorothy was ready, while Bill had to flip the same switches, then flip some more, then press the buttons before starting to unstrap the device from the truck. (Jo didn't have to unstrap D4 because they realised at that point it had to be anchored to something heavy because the device was too light and decided to sacrifice the truck). However it is possible that Bill actually flipped the same switches twice. We can see him flip the switches, then we have a quick close shot of Dorothy 2 then the camera goes back to Bill flipping the switches again. There is no such angle change during the part where Jo activate D4, so it's very much probable that they got two angles of Bill Paxton flipping the switches, but forgot to cut one. (00:59:15 - 01:36:00)Chanook Lefebvre
Continuity mistake: When Jo and Bill are traveling in the ditch during the tornado they show them hitting the bridge from the front and then they change the angle to the passenger side (Jo's side) and they show them hitting the bridge again.
Factual error: When the team is attempting to intercept the second tornado, Bill floors the gas pedal in the Dodge Ram after Jo expresses disgust at how slow he's driving. The next shot shows the dashboard, where the speedometer moves from 50-70 MPH, the engine is heard accelerating in the background, but the tachometer stays around 1500 RPM. The truck is an automatic and so it would have downshifted when Bill pressed the accelerator to the floor, and therefore revved much higher.
Continuity mistake: In the opening scene, where Jo is very young 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 mistake: When they are driving in the Dodge Ram, the window gets shattered at one point, and then they literally drive through a house and then as they come out, the window is intact again.
Continuity mistake: When Bill and Jo are in the yellow pick-up going after the first tornado, there is a yellow raincoat with a visible metal snap hanging from a hook mounted on the rear window directly behind Jo. As the scene progresses, it moves to a position higher up and off the window when Jo says, "We're moving to intercept, guys. Get ready to set up." Then Bill gets off the road and down into the ditch, right before Bill says, "Are we having fun yet?" the raincoat is back hanging from the hook on the window behind Jo in a different position (no snap visible).Sheri Hartman
Continuity mistake: When 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 fiancée'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. Obviously the call is deliberate 'comic relief', even though they were so close to the tornado and about to be engulfed, but the real problem is in reality she would not have been able to hear it ring amongst the grand noise of all the wind.
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.
Factual error: In the scene when Bill and Joe are about to deploy Dorothy 2, we see that the tornado (F-2 I believe) rips out an entire row of power poles high into the sky with the power lines still attached to the poles straight from the ground. In real life, when a tornado runs over power poles, it would only knock them down.Movie Lover
Continuity mistake: At the roadside restaurant, when Bill first sees Jonas' version of Dorothy, we see it from Bill's perspective. You can see that the panels in DOT's top are open. In the next shot, Jonas is discussing DOT with the press and the top is closed then opens as he describes the sensors. (00:20:25)Guy
Continuity mistake: Towards the end of the film when they are preparing Dorothy 4, the twister behind them is about 5 metres away. Then it it much further back the next time we see it.
Continuity mistake: Near the beginning, when Bill and Melissa have gone to get the divorce papers, Bill leaves Melissa talking to Dusty. When Dusty starts telling her about the "suck zone" there are a couple of black cows behind Dusty. Next, Jo comes over to meet Melissa and when the camera pans to the same area behind Dusty, there are no cows. (00:12:50)Sheri Hartman
Continuity mistake: 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?