In a year without much winter weather, there’s a chance of a bitter blow before spring takes hold. Experts say a disruption of the polar vortex could unleash cold, stormy conditions to the ...

Polar vortex to bring frigid temperatures, snow and ice to millions of Americans About 60 million people are forecast to experience subzero temperatures. The polar vortex may also fuel yet another ...

Although the term polar vortex may seem relatively new, it isn’t. Disruptions of the vortex were first written about by German meteorologist Richard Scherhag in 1952 — over 70 years ago.

On Monday, the polar vortex will reach the Deep South, with temperatures down to the freezing point of 32 degrees Fahrenheit in Atlanta. Wind chills will be in the 20s.

El Niño is associated with warmer than normal temperatures and less precipitation in the Pacific Northwest but it's not a guarantee on the forecast.

The inauguration for President-elect Donald Trump will take place Monday in Washington, D.C., where the forecast shows a high of 24 degrees for Capitol Hill and a low of 8 degrees.

In El Niño years, the polar vortex usually stays strong, and it keeps a lot of cold air bottled up. But if it is disrupted, it could allow cold air to move south. Systems can tap into that and ...

Lobes of the polar vortex, like octopus tentacles, have frequently lashed the Lower 48 this season. ... In Washington, January 2014 was the coldest in decades by many counts.

WASHINGTON — A pattern flip that could send extreme cold air spilling into the region this winter may take shape. The polar vortex, which traps cold air near the North Pole, may experience a ...

WASHINGTON — We are in the middle of a blast of extreme cold weather in D.C. The polar vortex has shifted, spilling cold air across the U.S. with below freezing temperatures and subzero wind chills.