Every state but Hawaii, California and Florida is likely to get a taste of wind chills of 20 degrees or colder.

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 ...

Meteorologists warn that the coldest burst of Arctic air this season is coming to put an icy and prolonged exclamation point ...

The US is preparing for its 10th cold snap caused by the polar vortex this season as meteorologists warn it could be the ...

A mass of air called the polar vortex has escaped the Arctic and plunged southward. Some scientists see the fingerprints of climate change. transcript A powerful winter storm tore across the Gulf ...

But some emerging science suggests that, generally, the polar vortex could be changing as a result of global warming, possibly causing more cold extremes in North America. Warming temperatures at ...

The polar vortex is a gigantic circular upper-air ... The images below show how the influence of climate change from as far away as the mid-latitudes can trigger an outbreak of arctic air ...

These severe cold events occur when the polar jet stream – the familiar ... But does this cold snap contradict human-caused global warming? As an atmospheric and climate scientist, I can tell ...

Those disruptions to the circulation are happening more often as global warming has weakened the polar vortex. What’s less clear is whether those events are also leading to bouts of cold on the ...

A polar vortex will plunge Waterloo region ... Steven Flisfeder, a warning preparedness meteorologist at Environment and Climate Change Canada, says it still won't quite reach the average high for ...

The coldest burst of Arctic air this season is coming to put an icy exclamation point on America's winter of repeated polar vortex invasions, meteorologists warn. And it will stay frozen there all ...