Yes, it's winter. It's been a while since we've had a cold spell of this magnitude and for this long. What's causing it?

As much of the Northeast digs out from the biggest snowstorm in half a decade, New York, Philadelphia, and Boston could all ...

A blast of winter cold doesn’t contradict climate change — it often reflects how a warming planet is making weather more ...

A warmer atmosphere has the potential to hold more moisture, which can contribute to heavier precipitation in any season, scientists say.

As much of the Northeast digs out from the biggest snowstorm in half a decade, New York, Philadelphia, and Boston could all ...

So looking ahead to the winter of 2025, 2026, I see *** similar set up to last year *** weakening La Nina and *** strongly ...

Much of the nation east of the Rocky Mountains is hunkered down for what could be the worst winter storm of the season.

A huge winter storm blasting across the country could cause power outages, including here in South-Central Pennsylvania.

A massive disruption in the polar vortex has encased Moscow’s tallest tower in ice and frozen pasta mid-air in Minneapolis.

Tens of millions of people are in the path of a major winter storm. Federal cuts threaten efforts to understand the causes of such weather.

What is the polar vortex? This article explains what a polar vortex is in simple terms, how it influences winter weather in ...