A significant change in the atmosphere means the weeks after Thanksgiving could be colder and snowier than normal across ...

As we look toward mid-December into January, the door is opening for some potentially significant winter weather.

Over the next 10 days, scientists say, changes in the stratosphere will upend weather patterns and set the stage for a cold, snowy December across parts of the Northern Hemisphere.

In 2014, the term “polar vortex” burst on the scene across Canada and the U.S. as temperatures plunged. In some places, it ...

It has been a warm autumn, so far. But the polar vortex is forecast to change unusually early, and that could impact your ...

A wide swath of the western U.S. may be in for below-average temperatures as forecasts suggest an Arctic blast is looming.

It's been a warm autumn, so far. But the polar vortex is forecast to change unusually early, and that could impact your ...

After a weekend of milder temperatures, a cold snap is expected to hit the Milwaukee area starting Tuesday, Nov. 25.

The Weather Network says the polar vortex has been disrupted only three times in November since it was first documented 70 ...

The polar vortex could be disturbed in a way that hasn't happened this early in 25 years. You’d be forgiven for being ...

Forecasters are tracking new polar vortex changes that could reshape early December across the U.S. How will this affect ...