The polar vortex is expected to reach the Utah-Idaho border sometime in the late afternoon and evening Friday as it continues ...

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.

Here is what is and isn't a polar vortex when Colorado receives cold like what is forecast for the holiday weekend.

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

A frigid cold front will keep Colorado below freezing over the weekend. Several rounds of snow in the Denver metro area are ...

NEWS has issued Weather Impact Days for Friday through Tuesday due to subzero temperatures, wind chill and snow.

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

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

Wind chill values are expected to drop below 10 degrees, with some locations seeing wind chills closer to zero. Forecasters ...

Storm Blair has hit most of the U.S., bringing freezing temperatures to Texas. Precipitation later this week could mean snow ...

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