El Niño's record-breaking force could enter a chaotic dance with another wintertime powerhouse: The polar vortex.

Brutal midwinter cold is settling in across the eastern United States, and forecasters say it is not leaving quickly. A disrupted polar vortex is expected to keep Arctic air locked over the region ...

Michigan is set for several days of frigid temperatures and heavy lake-effect snow as Arctic air continues its slow march across the eastern U.S. When Arctic air surges into the U.S., the polar vortex ...

The polar vortex normally traps frigid Arctic air around the North Pole, but disruptions can send that cold much farther south. The transcript links recent extreme winter events in North America to ...

Add Yahoo as a preferred source to see more of our stories on Google. In yet another sign that winter weather is either here or will be soon, the dreaded polar vortex is making news yet again. Its ...

It seems like you cannot mention cold weather in the fall and winter without coming across the phrase “polar vortex.” Meteorologists often refer to this weather element as a potential culprit behind ...

The polar vortex is so back, and in some parts of the country, the weather system will bring with it up to a foot of snow. If “polar vortex” is giving you déjà vu, that’s because we’ve heard it before ...

Nearly all of New England has seen its share of frigid cold days and record mountain snow so far this November — and looking ahead, we’re about to get hit with another blast of Arctic air from a ...

A wide swath of the western U.S. may be in for below-average temperatures as forecasts suggest an Arctic blast is looming. Reading time 3 minutes Much of the contiguous U.S. could be in for a very ...

Forecast models show Antarctica's polar vortex strengthening as winter continues. Here's why meteorologists are watching and what it means for Ohio.

Severe temperatures are expected to dominate most of the country in the coming days, with single-digit temperatures forecast for parts of the Northeast. Overall, temperatures will begin to warm in the ...