Follow NBC News live updates for the latest coverage of the freezing winter weather affecting large swaths of the U.S., from ...

A polar vortex is slated to sweep most of the continental US bringing winter storm warnings and a hazardous freeze to ...

Dangerously cold weather will put much of the United States into a deep freeze over the weekend as temperatures are expected ...

Across the Corn Belt, cold weather persists, especially in the Great Lakes States.  Early Friday, sub-0°F temperatures were ...

Tornado risk area expands. The area at higher risk for tornadoes grows from January to February as the jet stream begins to ...

The weather conditions are expected to be so intense that Donald Trump decided to move his inauguration inside the Capitol ...

The Arctic blast highlights the contrasting weather extremes gripping the country as wildfires burn up California and freezing winds in the Northeast.

Cold Weather Advisories and Extreme Cold Watches are also in effect ... ranging from the negative teens and negative single digits in the northern Plains and Upper Midwest to the single digits and ...

Amtrak has expanded its list of train cancellations in and out of Chicago because of a forecast of “extremely cold ...

A storm system that brought rain and snow to Southern California will move into Texas and the South by Wednesday, bringing ...

Temperatures are expected to drop into the single digits early this week. An expert says you need to be prepared if you want ...