The polar vortex's blast of Arctic air from Canada brought the season's coldest weather to the majority of U.S. The vortex is ...

An Arctic blast that began in the northern plains on Saturday spread bitter cold from the Rockies through the East Coast and ...

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

Some areas of the U.S. may see temperatures as low as -20 or -30 degrees early next week as arctic air from Siberia rolls in.

These severe cold events occur when the polar jet stream – the familiar jet stream of winter that runs along the boundary ...

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

According to the National Weather Service, a polar vortex will impact most of the country this weekend, here is what you need ...

A blast of Arctic air is set to cover much of the United States with temperatures below freezing starting on Friday and into ...

An arctic blast will send temperatures across the United States plummeting as bitterly cold air that originated in Siberia ...

Snow and winds are likely to disrupt traffic, trigger flight cancellations, and cause headaches for people traveling to D.C.

An Arctic blast arrived in central Ohio on Monday, bringing with it the coldest air that central Ohio has felt in more than ...