Studying crowd dynamics could inform strategies that help to prevent dense gatherings from becoming dangerous.

The polar dance that caused snow to fall across the South in January has been studied for decades, but scientists still hope ...

Understanding the Polar Vortex The polar vortex is like a massive whirlpool of frigid air moving around our planet's poles. Think of it as a barrier that, when strong, keeps icy polar air trapped up ...

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

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 ...

This pattern change would be good for a couple ... At the same time we go into a touch milder southwest flow, the polar vortex will still be churning away over northeast Canada.

The University of Wisconsin-Madison faced a frigid start to the semester, with the polar vortex expected to bring more icy ...

As we prepare for a very busy weather week, what comes next? We told you earlier in the month the polar vortex was going to ...

The Polar Vortex is that counterclockwise flow of cold air that remains in place ... This wobbly or weak pattern in the jet stream means that more arctic air and stormy weather are in the forecast.

The polar vortex is a gigantic circular upper-air weather pattern in the Arctic that envelops the North Pole. It's a normal pattern that is stronger in the winter and tends to keep the coldest ...

you can thank — or blame — the polar vortex and its interaction with the jet stream. This dynamic duo plays a huge role in shaping winter weather patterns and determining whether we’ll be ...

When something blocks the jet stream’s westerly flow, it forces pockets of Arctic air southward. Scientists compare the wind strength of the vortex to ... of these patterns and their potential ...