Remember the movie "The Fog" that came out several years ago. This video reminds me of that movie.

In the movie version the fog rolled into a coastal harbor town, but in the clip you see here, the huge fog cloud is seen rolling in over the lone range mountains in Newfoundland, Canada. Fortunately, it’s not like the movie where dead sailor ghosts were coming back to town for revenge on the townspeople.

Here's a trailer from the 2005 movie "The Fog" see any similarities?