Some states could suffer the coldest air in a generation, the National Weather Service said. About 220 million people – or 75% of the continental US population – will endure below-freezing temperatures this week.
The wicked cold has already turned deadly in Iowa, where a 13-year-old boy was found dead, Marshalltown police said.
Corey Brown's body was found Sunday after he was out for days, police Chief Michael Tupper said. The teen left her home during a snowstorm Tuesday night after a discussion with her family about cell phone use. He never returned home.
In many parts of the country, the coldest life-threatening weather is yet to come.
Between Tuesday and Thursday, temperatures will drop to 20-40 degrees below zero in the Upper Midwest and Great Lakes, CNN meteorologist Dave Hennen said. Wind chills will plummet to 35-60 below zero.
"Chicago will probably see its coldest readings in nearly 25 years, with lows approaching the all-time record of 27 below and a daytime high on Wednesday of around 1
"It could stay below zero in Chicago from around noon on Tuesday until around midday on Friday."
Across the Midwest and Great Lakes, brutal cold will probably shatter dozens of records, Hennen said.
But the deep freeze is only half of the story. The Dakotas has grappling with blizzard conditions, the National Weather Service said. And heavier snow is expected in the Upper Midwest and Great Lakes, meaning "dangerous to impossible travel conditions."
While in the midst of the snow, the snow will probably extend all the way down to Mississippi and Alabama  In Atlanta, where thousands of football fans are getting ready for the Super Bowl, temperatures will plunge Tuesday as the city gets hit with up to two inches of snow.
All Georgia state offices will be closed Tuesday, Gov. Brian Kemp said.
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