Continuity mistake: When Don Cheadle walks into the OEM in the morning just after the blackout, there is a guy with a headset holding his hand on it in one shot, but just holding the end of it with his fingertips in the next shot. (00:28:30)
Continuity mistake: When Roark is running to save his daughter, the camera cuts to his point of view and Kelly is shielding the boy with her back towards Roark, yet in the following shot when Roark goes to grab her she is now standing at a side. (01:28:15)
Continuity mistake: When Roark is trying to get a radio, and Emmitt is watching on the big screen in the OEM building, there is a black man behind him who is talking to the guy with the headset on. In one shot the black guy is almost back to back with Emmitt and looks over his shoulder to look at the screen, yet when it cuts, the black guy is talking to the other guy but is not back to back with Emmitt. (00:43:25)
Continuity mistake: Before they build the lava dam, when Mike flips over a map on the hood of a truck to draw on it the map is clear of ash. In the next shot from across the hood the map is covered with ash. The next close up it is ash free again. (01:02:25)
Continuity mistake: After the bus is flipped on its side and Roarke and Barnes stop to rescue a man lying in ash, a tree falls blocking their escape with high flames, forcing a ladder truck to save the trio. When the ladder is unable to be lifted because of the weight and extreme heat, the fireman explains he will have to swing them out instead. The ladder swings in the direction of the flaming, downed tree, but the flames from the tree no longer seem to be a hindrance.
Continuity mistake: When Amy Barnes and Roark are in the park, Amy runs up to Roark and says, "Excuse me," and she goes slightly past Roark so she can face him, yet in the following shot she is side by side with Roark. (00:22:35)
Continuity mistake: At the end it starts to rain and everyone is covered in ash, soot, dust etc. However, after only a few seconds of rain, all the ash, dust and soot have vanished off Roark, Kelly and Amy instantly. (01:32:05)
Continuity mistake: Near the start, Roark is down in the drain and part of his mask melts. When he is back at the surface the mask is in perfect condition. (00:15:00)
Suggested correction: It was not a mask but some equipment on his chest near the radio, which looks pretty burned, when he finally gets outside.
Continuity mistake: When Roark has been seen looking for a radio, there is a bloke behind Emmit who has a headset on. The camera does an instant cut to the front and the headset has gone. (00:43:40)
Continuity mistake: Just after Amy gets out of the drain, her fire suit is off her one shoulder and halfway between her shoulder and elbow. The camera cuts and it is back on her shoulder up to her neck instantly. (00:32:10)
Continuity mistake: The severity of Kelly's wound to the face constantly changes. Some shots it's extremely red and raw, others it's only slightly red. (01:22:00 - 01:22:30)
Continuity mistake: Roark's car has the windscreen smashed and cracked by the volcanic ash. In some shots, mainly a distant shot of it being driven, there are no cracks in the windscreen. (00:32:35)
Continuity mistake: When Roark reaches for the phone to call a babysitter his arm is fully stretched out, yet in the following shot its not stretched out but bent at the elbow. (00:04:30)
Continuity mistake: Between the shots when Tommy Lee Jones is talking to his ex-wife, we can see the cord from his headset changing positions from left of the boom-microphone to right and back again. (00:19:00)
Continuity mistake: When the lava begins spilling from the tar pits, Tommy Lee's SUV is not parked next to the pits, but after the downed firetruck shot, the SUV is now there.
Continuity mistake: As the rescue crew is trying to open the disabled subway train, one man bashes the door just below the handle. A second later, he draws back to hit it again, and the door is undamaged from the first blow.
Continuity mistake: After losing her partner, Amy is above ground, taking off the equipment. As she does, her jacket goes from wide open and half off to almost closed in a second.
Continuity mistake: When Amy Barnes is leaning against the 4x4/humvee, she realises it is snowing so she puts her hand up. In the previous shot she touches her face with gloves on, and in the following shot the gloves are no longer on her hands. (00:35:50)
