The grounding (or antistatic) straps which are handed out only work if they are actually connected to an electrical ground. Simply wearing such a strap is worthless. Some companies claim to have a wireless grounding strap; however, they have been shown to be ineffective and are considered scams.
The correct military time for 1:10 pm is thirteen ten hours, not zero thirteen hundred ten.
The movie shows a security guard attempting to give Walter Brown an injection. Security guards are not authorized to do this. It must be a medical professional.
Early in the movie, Owen states that his watch is unaffected by the electrical disturbances. This is untrue as most modern analog watches are battery powered and would not survive an electrical pulse. The only way this would be true is if it was a self winding watch.
When Selena rescues the man from the burning SUV, the following explosions show that the car and the SUV have the same license plate numbers (KAZ 1A6).
From the road at Springfield Airport, a van is seen driving in the left background shouldn't be there.
The nuclear bomb explodes in the center of Kamchatka Peninsula, Russia & not in land locked area of Siberia, Russia, pointed to by Steve Palmer on the computer monitor when he found a pit mine in a remote location.
If there is an issue with the Movie Shack van starting up, they should have not kept shutting it off and left it running.
Following the initial destruction, someone says that they can't be meteors because there are no impact craters. However the vast majority of meteor don't leave craters; it depends on their size and what they hit. It's quite possible that they could be vaporised on impact or split into very small pieces.