A big reason is we have another lobe of the Polar Vortex that is going to shift south into far southern Canada. This lobe of ...

Millions of people across the U.S. will experience subzero or below-average temperatures in the coming days as a polar vortex coming from Siberia will usher in a new cold front. The Rockies, northern ...

When the Polar Vortex is in a weakened state, a jet stream wobble sending polar air into the mid-latitudes becomes more ...

It's a term you hear every couple of winters, when we get stuck in the coldest of cold patterns – polar vortex. But what exactly is it and how does it impact our weather? The polar vortex is ...

two bands of fast-moving air – the polar jet stream and the stratospheric polar vortex – sometimes tango together to influence weather in the northern hemisphere. As the Arctic continues ...

It's like "bomb cyclone" or "firenado." It seems like the sort of phenomenon that would be responsible for the record-breaking blast of cold, snow and wintry conditions that reached all the way to the ...

At the same time we go into a touch milder southwest flow, the polar vortex will still be churning away over northeast Canada. I don’t expect a full onslaught of the polar vortex to shift south ...

While February kicked off with some moderate conditions, next week looks to feature another incursion resulting from the destabilization of the polar vortex, in this particular event, a split.

The Rockies, northern Plains, and Upper Midwest will bear the brunt of these extreme ... as far as the South and the mid-Atlantic. The polar vortex could bring life-threatening weather conditions ...