The relentless winter of 2025-26 in the East is about to unleash its most brutal cold outbreak yet.

The Polar Vortex is expected to be impacted by a Sudden Stratosphere Warming, bringing cold air to the eastern US.

The cold weather appears to be here to stay in South Jersey, at least until mid-February. A polar vortex is expected to keep ...

What is the polar vortex? This article explains what a polar vortex is in simple terms, how it influences winter weather in the U.S., and why meteorologists talk about it during major cold events.

This winter’s harsh run is intensifying, with some of the coldest air so far this season plunging into New Hampshire.

A late January 2026 winter storm left more than snow and ice in its wake.

As the U.S. prepares to take on another bout of cold weather, the term "polar vortex" is getting thrown around. But what is it?

The polar vortex has shifted from obscure jargon to a phrase that can shut down schools, snarl air travel and strain power grids across continents. In the 2020s, as the climate warms and ...

A collapse in the polar vortex is letting Artic air come here. What that means, and why it happens.

Rising Arctic temperatures and melting sea ice could be causing cold air to flow into the Northern Hemisphere. But not all ...

A severe winter storm that brought freezing rain, sleet and snow to a large part of the U.S. was intensified by the polar ...

A Polar Vortex brought temperatures so cold in January 2014 that it froze Niagara Falls. Signals of a rare sudden stratospheric warming in the next two weeks have some forecasting an imminent Arctic ...