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It is a sort of sci-fi movie.  The Day After Tomorrow was loosely based on this type of weather event.
temp dropped 32 degrees in 8 minutes in cheyenne. I was outside when it happened. shit was crazy, like walking into a freezer >

In 8 minutes?! Lordy, it sounds like sci-fi. Scary. I'm really worried for the homeless and elderly and anyone who loses power.