The phrase “historic polar vortex” evokes a country locked in ice from the Great Lakes to the Gulf, but the most reliable ...

Cross-polar flow is a phenomenon that describes the movement of air over the North Pole. For U.S. context, this generally ...

It’s really, really cold again — as the US shivers through at least the eighth blast of air from the Arctic this winter. Winter, which is warming faster than any other season for much of the US, seems ...

A rare stratospheric warming event high above the Arctic could disrupt the polar vortex and send colder air toward Texas in the coming weeks.

A Sudden Stratospheric Warming Event describes the rapid warming and disruption of the stratospheric polar vortex above the ...

Less than a week after snow, sleet and freezing rain, we're now forecasting highs in the 70s. During its coldest point, last week saw wind chills drop to -30° to -50° in states like Iowa, Wisconsin, ...

In yet another sign that winter weather is either here or will be soon, the dreaded polar vortex is making news yet again. Its potential arrival in the United States over the next few weeks is cause ...

CHICAGO (WLS) -- "Polar Vortex" is a dreaded term that we all have become accustomed too over the past few years. But what is it? The polar vortex is always present in the Arctic Circle. It is a broad ...

An Arctic blast is expected to bring cold temperatures and heavy snow to Iowa around Thanksgiving and into early December. A rare weather phenomenon, known as a sudden stratospheric warming, could ...