Frigid air that normally stays trapped in the Arctic has escaped, plunging deep into the United States for an extended visit that is expected to provoke teeth-chattering but not be record-shattering.

The National Weather Service said that wind chill temperatures could dip into the teens to low-20s from Texas across the Gulf Coast.

A polar vortex is currently hitting the United States, with schools closed in many areas and at least four deaths caused by treacherous conditions.

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The central, southern and eastern United States are bracing for the coldest, most persistent frigid Arctic air in years that will come in waves and last through mid-January,” ...

Tom Homan, tapped by President-elect Trump as his “border czar,” stressed that the incoming administration has to keep an eye ...

The arctic high pressure system will funnel southward from Alaska and western Canada and into the Plains on Tuesday afternoon, ushering in cold as far south as southern Texas. "High temperatures ...

The weather pattern for January is roaring like a lion as a series of fronts brings Arctic air into the United States, and ...

Temperatures are dropping in Texas on New Year's Eve ahead of next week's polar vortex, which will bring snowfall to much of ...

Snow is wrapping up in the Northeast Saturday morning, and an arctic cold blast is next. Temperatures behind this snow system are plunging. In the last 24 hours, temperatures have fallen 15 to 25 ...

Winter began early Saturday morning, and a blast of arctic cold air rings in the season this weekend. Frigid air surges in Saturday night and into Sunday. Wind chills on Sunday morning could be in ...

An Arctic cold front pushed south through Kansas late Thursday afternoon and early Thursday night bringing south winds around to the north and northwest followed by a healthy shot of cold Arctic air.