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

Major winter storm brings heavy snow to East Coast as Arctic blast puts millions under warnings from Plains to Maine ...

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

Over 135 million people across 35 states will be under cold weather alerts over the next several days as the mid-Atlantic and ...

A series of cold fronts the last few weeks has kept Florida downright chilly, as another winter storm starts to take aim this ...

The coldest temperatures of the winter season are still ahead. A new arctic blast of polar air is predicted to push down into ...

The storm had knocked out power to more than half a million utility customers by early Friday as it moved across Ireland.

An arctic blast will send wind chills plummeting below zero through Monday, Tuesday, and Wednesday. Unusually cold air ...

A potent cold front will enter the north-central U.S. before roaring across much of the rest of the nation over the weekend.

At least 10 people have died. Officials warned that arctic cold will persist for another day, and roads could remain ...

Bitter Arctic air plunged more than half the United States into a deep freeze yesterday, including New Orleans, where the ...

A series of disturbances in the atmosphere is sending the polar vortex south (again) next week with a burst of even colder ...