Continuity mistake: The Judge and son are standing by the side of the road and there's a black bag on the ground between them. When they leave there is no bag on the ground.
Revealing mistake: In the beginning of the storm, a trashcan is blown down the street, by the wind. Most of the leaves, lying in the road, are not moving though. (01:28:05)
Factual error: In the scene in the basement during the storm Dale is running the projector on house electricity. The lights go out and he switches to a battery which must be 12 volt. He runs the projector on that current, which is impossible.
Continuity mistake: The Judge and son are sitting on the porch. The Judge is drinking, one glass, one bottle, then the son has a glass in his hand to have a drink too.