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 ...

Most of the US will enjoy milder temperatures on Thursday, but the warmup will be brief as a polar vortex will send ... the overall pattern is expected to remain favorable for more brutally ...

This will be due to a polar vortex, an area of strong winds that encircle the Arctic and typically ... The FOX Forecast Center said that while some moderation in temperatures may occur during the ...

The mere mention of the term "polar vortex" can set your head spinning (and maybe eyes rolling). It’s got to be clickbait, right? Or maybe someone dreamed up the name for views? Is it a storm?

What’s shaping up to be the most expansive polar vortex in over a decade is about to plunge much of North America, including nearly all of Canada, into the coldest temperatures the country has ...

its pattern of winds changes from a circular ring to a wavy band that loops further south. This unleashes the cold weather normally retained at the pole further to the south. The polar vortex ...

Most of the country will likely be hit by an arctic blast this weekend into early next week as the polar vortex ushers in cold air from Siberia and multiple storms roll in and bring the potential ...

The polar vortex will soon elongate over North America with a dangerous cold moving into sections of Canada and the U.S. One of the most notable and widespread Arctic outbreaks that we have seen ...

The first is the polar jet stream, a huge current of air that circles the globe between 50 and 60 degrees north latitude within the low-altitude troposphere, the same layer of atmosphere where ...