A polar vortex — a large area of low pressure — is heading south from the Arctic, bringing with it cold weather across many ...

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

Winnipeg is particularly vulnerable when the polar vortex shifts. Its location on the open Prairies gives Arctic air an ...

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

The polar vortex is weakening, which means New England is in for a colder than usual December, with episodic cold snaps.

A blast of polar vortex cold air is expected to hit parts of the country around Thanksgiving. What to expect in Tennessee.

But across the country, AccuWeather meteorologists are predicting major travel disruptions as a storm system is set to batter ...

A weakened vortex allows cold air to escape, leading to sudden and episodic cold blasts. As a result, instead of experiencing one prolonged cold period, regions affected by a weakened polar vortex may ...

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

As winter approaches, Ontario is bracing for a significant weather event that promises to blanket the region in Arctic air and heavy snowfall. Forecasters predict that while the northern parts of the ...