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 polar vortex dipping down from Siberia will bring a cold front with frigid temperatures to nearly 300 million Americans.

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

Snow and winds are likely to trigger flight cancellations and cause headaches for people traveling to DC for Inauguration Day ...

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

Despite a cold start to the day, most of the U.S. will experience seasonably mild temperatures on Thursday. However, ...

Americans were bracing Thursday for frigid temperatures that forecasters said could produce life-threatening conditions, with ...

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

Cold air from the arctic sometimes dips southward across the American plains. What to know about the polar vortex.