The weather effects in The Day After Tomorrow were ripped off from the 1979 novel The Sixth Winter by Douglas Orgill and John Gribbin. Specifically, the super-

The weather effects in The Day After Tomorrow were ripped off from the 1979 novel The Sixth Winter by Douglas Orgill and John Gribbin. Specifically, the super-cold storm centers were an "expanded for video" version of the "Ice Dancer" storms from the novel; they are unique enough in my rather extensive reading that I noticed the similarity immediately. (For that matter, the same director's later movie, 2012, borrowed rather strongly from Don Pendleton's 1969 novel Cataclysm, though from the credits that may have been indirectly.)