Frozen Nation

Forecasters are predicting sub-zero wind chills threatening much of the nation.
3:00 | 01/04/14

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Transcript for Frozen Nation
covering it all from the midwest to the east. And begin with gooe joe benitez in chicago. Getting more on top of the foot they have. Good evening. Reporter: Good evening, david. Yeah, the snow just started falling moments ago. In fact you can hardly see this beautiful chicago skyline already, and that chicago river completely frozen. This is our icy nation. Tonight millions are bracing for more than just a snowstorm. But also a paralyzing deep freeze, a bone-chilling blast of bitter cold now threatening much of the nation. Forecasters predicting sub zero wind chills beginning tomorrow. The most frigid in years. It's brutal. Reporter: Howl cold? Water freezing in just seconds. Now it's ice. Reporter: Temperatures expected to plummet in green bay, making tomorrow's ice bowl one of the coldest nfl games in history. THE PACKERS AND 49ers PLAYING IN Temperatures near 0. It will feel like 15 below zero. Wbay's matt smith is there. The all-important tailgating forecast calls for a wind chill of negative 15. So for the roughly 80,000 fans brave enough to embrace the bitter cold, receive free hand warmers, free coffee and hot chocolate. Reporter: While they prep for fun, there's real danger here in the midwest. Watch just how quickly heat escapes the body. This thermal camera showing the heat pulling away within minutes. 16 people have died from weather-related injuries. Doctors stressing be careful. Doctor, what are some of the injuries you're seeing today? Folks are not preventing injuries that they would encounter with strenuous exercise. Reporter: Now trying to get the homeless off the streets and into shelters. And back here in chicago, we're going to be seeing really heavy snow overnight. In fact, david, listen to this, come monday morning, we're talking about a daily temperature, a temperature in the daytime of 11 degrees or 11 below zero, david. It is going to be frigid here.

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

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