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

The long-range data shows we may be done with a true Arctic air mass similar to what we experienced in January. But we ...

The most unusually cold air in the Northern Hemisphere will be over the United States early next week, bringing dangerously ...

A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of ...

Research has found that rising temperatures in the Arctic are weakening weather systems that normally trap the cold around ...

The weather flow is gradually changing now and as we head into early February. Our storm systems will come from the west and ...

A strong polar vortex in the stratosphere has brought subzero temperatures to the Midwest, Mid-Atlantic and deep into the South.

A storm will bring heavy snow, particularly to southern Nebraska and southwest Iowa, with sharp variations in snowfall totals ...

MINNEAPOLIS, Minnesota — Our entire region is under an Extreme Cold Weather Warning until 12 p.m. Tuesday; wind chills could fall as low as -45 degrees. This Arctic blast is thanks to a polar vortex.

The vortex is located in the stratosphere, the layer above the troposphere (the troposphere is where we live and most weather occurs). In the winter, the polar vortex helps keep frigid ...

It's a term you hear every couple of winters, when we get stuck in the coldest of cold patterns – polar vortex. But what exactly is it and how does it impact our weather? The polar vortex is ...

The latest monthly temperature outlook by the National Weather Service's Climate Prediction Center looks familiar to those ...