Deep Freeze Heading South to US

Some of the coldest air in 16 years is set to take hold as far south as Southern California.
3:00 | 12/03/13

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Transcript for Deep Freeze Heading South to US
Right now, let's get to the weather. It's the cold air that places that escape the cold air that get through winter without it, are getting ready for it. We're going to show you pictures out of central and southern california. Things like fruit trees need to be prepped for something like this. Some places will go 50 degrees down. There's winter storm warnings, watches and advisories out for 14 to 19 states right now. The number's up to 19. It's been growing every 30 minutes or so. Before we're done with this, there will be 23 or 25 states, half of the country involved in this. It's a bitter cold blast that focuses on the west and moves to the middle of the country. Look at the cities that will focus in on that cold air. And watch denver go from 49 to 9 degrees. Dallas gets to 35. L.A., It's more of the nighttime temperatures that are issues there. And they're prepping for all of this cold air. And look how deep this goes. Denver, two below. It's real temperatures. It's about 20 degrees colder than it normally is this time of year. And some of these places in the country haven't seen temperatures like this in 16 years. We're not talking about normal cold air. We're talking about extreme cold air. We'll be talking about it throughout the morning. We'll have the nation's forecast

This transcript has been automatically generated and may not be 100% accurate.

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