Revealing mistake: When one of the sailors peers out of the circular window and sees the fog bank you can see the window has not been lined up properly with the superimposed fog as the two collide at the right edge. The film then cuts away to the sailors and then back to the window again and this error has been fixed. (00:16:30)
Continuity mistake: During the opening credits we see a shot of the beach when the "Tom Atkins" credit appears and Stevie Wayne is on the radio. It's supposed to be just after midnight yet it looks like dawn.
Continuity mistake: There are two shots of the sun setting in the distance but at completely opposite ends of town.
Character mistake: When the second fog bank rolls in, the weatherman says it is coming from the south-east, and the DJ says the same thing once; the second time, however, she says the south-west.
