High up in the atmosphere above the Arctic, something interesting is going on. The upper levels of the stratosphere, above 35 ...

Something called a sudden stratospheric warming event appears to be on the verge of occurring. Basically, that's when the ...

Over the years cold weather events have all been connected to the surface effects of sudden stratospheric warming ...

A disturbance in the polar vortex could spill icy cold air south into the United States much earlier than usual, the National ...

A rare weather phenomenon that hasn't occurred since 1968 is expected to plunge temperatures across parts of the United States.

A rare November sudden stratospheric warming event could lead to a polar vortex bringing unseasonably cold weather to Iowa at ...

This weather event may not be constant, but there will be cold waves over multiple days with single-day warmups mixed in.

The culprit behind the country’s somewhat wacky weather, or at least part of it, is the (aforementioned) probable sudden ...

With the ski season just days away, we’re still looking at dirt here on the valley floor. But a change in weather patterns ...

Once every two years there is a disruption of the polar vortex. So you get very strong warming like tens of degrees Celsius in a few days, which is associated with a breakup or stretching or ...

Nearly 82 million will be traveling up to 50 miles from November 25 to December 1, and the map allows a chance for Americans ...