Wind chills in Duluth, Minnesota, on Tuesday morning dropped as cold as minus 50 degrees. Below is a look at the latest wind chills showing where the heart of this arctic blast is located now. (MAPS: ...

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It's been a cold January for much of the U.S. David L. Ryan/The Boston Globe via Getty Images ...

However, a deep freeze, thanks to the polar vortex dipping down from Siberia, is bringing an even harsher arctic blast to million Americans this week. Maps show what to expect as the cold front ...

BOSTON (AP) — Tens of millions of residents along the East Coast are bracing for several inches of snow Sunday followed by dangerously cold temperatures that will grip much of the country from ...

An arctic blast looming across much of the U.S. will cause temperatures to plummet by 30 to 40 degrees this weekend and into next week, bringing a hazardous freeze from parts of the Midwest to the ...

That's because an Arctic blast is forecast to sweep down through Canada and blow through the Rockies on its way to the East Coast. In some places, temperatures could plunge as low as minus 30 degrees ...

That's because an Arctic blast is forecast to sweep down through Canada and blow through the Rockies on its way to the East Coast. In some places, temperatures could plunge as low as minus 30 ...