Windchill temperatures as low as minus 30 degrees are a risk to life, forecasters said.

A significant and rare polar vortex shift is currently unfolding in February 2026, triggering extreme winter conditions ...

A winter buzzword, explained.

A major weather pattern change underway across U.S. As we get into next week, the storm track looks really interesting.

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

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.

The west half of the country, including the Midwest, will start to warm up. But that won't be the case for the East Coast.

A severe winter storm that brought crippling freezing rain, sleet and snow to a large part of the U.S. in late January 2026 left a mess in states from New Mexico to New England. Hundreds of thousands ...

A warming Arctic can stretch the polar vortex, a high-altitude air ribbon, one says. The “wobble” can disrupt the jet stream, ...

Michigan are bracing for the coldest weekend of winter as Arctic air plunges south.

A sudden stratospheric warming event reversed the winds that make up the northern polar vortex on March 9. A new animation shows the vortex also moved away from the Arctic towards Europe. When you ...