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

The polar vortex can be a powerful source of winter weather, but it's not the only cause of severe cold and snow in regions better known for warmth and sunshine. The Gulf Coast states are still ...

However, a deep freeze, thanks to the polar vortex dipping down from Siberia, is bringing an even harsher arctic blast to million Americans this week. Maps show what to expect as the cold front ...

However, a deep freeze, thanks to the polar vortex dipping down from Siberia, is bringing an even harsher arctic blast to million Americans this week. Maps show what to expect as the cold front ...

This will be due to a polar vortex, an area of strong winds that encircle the Arctic and typically keeps the coldest air locked near the Pole, according to the FOX Forecast Center. This weekend ...

Knoxville could be hit with another snowfall this weekend, and very cold temperatures are coming. The National Weather Service in Morristown cited an 80% chance of rain Jan. 18 and a 70% chance of ...

Bundle up Tennessee because it's about to get downright frigid. Tennessee, along with most of the lower 48 states, can expect a blast of cold air thanks to a polar vortex. The term has recently become ...

The bitter weather -- tied to an Arctic "polar vortex" blast -- is expected to bring nighttime lows as cold as minus 23 degrees Fahrenheit (minus 31 degrees Celsius) over the weekend for some of ...

It’ll be a memorable cold outbreak as gusty winds make the frigid air dangerously cold in many locations in the coming days The polar vortex will engulf much of North America as we head into ...

the term "polar vortex" describes a massive cyclone of air that is always swirling high in the atmosphere above the North and South Pole. Cold spells like the one in the forecast this weekend can be ...

We've already fallen as low as 1° this year. Another dip in the polar vortex makes that possible for Cincinnati again next week. We've already fallen as low as 1° this year. Another dip in the ...