Continuity: In the scene where Jack is briefing the President, he draws a line on a map of the U.S. and tells the President to have everybody south of that line evacuated. The shape of the line changes between shots.

Factual error: The football (soccer in the U.S.) match we see relatively early on in the film is said to be between Manchester United and Celtic, in Glasgow. However, the non-MU team isn't wearing Celtic's home strip as they should be if playing in Glasgow (it's actually Boca Juniors from Argentina, in a match played in 2002) and the stadium shown is actually Old Trafford, Man. U's home ground, as shown by the advertising billboards in the background.

Visible crew/equipment: When Jack is in the library towards the end of the movie, he looks in a room and then the shot goes back to facing him. If you look very carefully, in the back of the hall you can see a person walk by. He is very hard to see.

Continuity: The first time we see the black bear cage, the sign (and the entire shot) is a reversed image. Twenty five minutes later, we see the black bear cage again and the sign is correct.

Factual error: When the International Space Station is shown, it's spinning. The space station doesn't spin. The centrifugal force would create gravity on all the outer sides of the space station - and make it impossible to dock other modules.

Continuity: Just before the huge wave hits the library, we see that Laura cuts her leg. She cuts it on the side of the top part of her leg. Later in the movie, when her trouser leg is pulled back to reveal the wound, it is now on the front of her lower leg.

Factual error: The International Space Station is shown taking meteorological measurements and transmitting them to earth. First of all, there are HUNDREDS of weather satellites already in orbit for that purpose, the use of which does not require distracting astronauts from other duties. Second, the ISS does not have sophisticated earth-sensing equipment.

Revealing: Very near the end of the movie, when the NOAA director is viewed in the helicopter as it approaches NYC, the image is reversed, verified by the David Clark logo on his headset being reversed. There are two different shots of this just a few seconds apart, and they are both reversed.

Factual error: NOAA headquarters is shown to be in downtown D.C, when in fact it is just outside of the District in Silver Spring, Maryland.

Continuity: When the tidal wave is hitting Manhattan, and the camera cuts to Laura walking behind the black woman and the cop, the woman panics and turns to her left to look at Laura, but in the following closeup she turned to her right to look and talk to Laura. (Slow-mo may be required.)

Other: None of the men in the movie grow any facial hair at all, even the ones stuck in the library in New York.

Revealing: In the scene where a newscaster is mentioning that two airplanes were caught up in the storm and crashed, they show footage of the AVIANCA (Colombian airline) Flight number 52, which crashed in New York on January 25th, 1990.

Continuity: After Sam's phone call to his dad, when Jack holds his wife with both hands at her cheekbones the position of her hair changes from under his hands to over, between shots.

Continuity: As the massive tidal wave is rolling through Manhattan, when it cuts to Sam looking at Laura from the steps, the two taxis in front of the library are further away from each other, than in the following shot when Sam has to jump on the cars just to get over them.

Factual error: When the North Atlantic current is shown on a world map, there are a couple of errors on it. 1) South East Asia is missing, and 2) Arabia is joined to Africa.

Continuity: When we see the news report on the TV, you can see that people are taking bottles of water from the shelves. Beside the TV you see a person's hand on the right side of the TV and a black tea flask as well. In the next shot the person's hand is much further away from the screen and the tea flask has also been moved to the opposite side of the TV.

Continuity: When Sam and his two teammates are on their way to NYC for the competition, the airplane gets hit by turbulence. Two attendants go to the back of the aisle with the drink cart, when the plane starts to shake, and in the long shot of the aisle (from the head to the back) one of them is in front of the cart and the other one is behind. However, both are behind the cart in the close up, when they try to prevent the cart from hitting anybody.

Continuity: When the two men at the start of the film are saving Dennis Quaid from falling, you can see Quaid reach for one of the others' hands, then that guy grabs him with both hands, but in the following shot, Quaid is holding the hands of both men.

Continuity: When Sam is sitting in the kitchen eating, his mother is talking to Jack on the phone and just after Jack says, "Sam is a straight A student he doesn't fail classes," Sam puts down his glass of milk and leaves his left hand up, but in the following shot it is down by his stomach.

Audio problem: The pitch of an airliner's engine doesn't change dramatically when going through rough turbulence. In the scene with the turbulence - after all is quiet, it almost sounds as if the engines are shut down. And it happens way to fast for it to be the pilots doing it. And why would the pilots speed up when entering turbulence?