Much below normal temperatures should persist across the eastern U.S. into early February before moderating slightly.

Deep penetration of cold temperatures and a coastal storm will bring bomb cyclone and polar vortex into your newsfeeds.

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.

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

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

To understand what Americans are experiencing with this winter blast, we need to look more than 20 miles above the surface of ...

A severe winter storm that brought crippling freezing rain, sleet and snow to a large part of the U.S. in late January 2026 ...

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

Welcome to the Frozen Apple. Temperatures in New York City have remained below freezing since Friday — and they’re expected to stay that way until at least early next week as arctic air has settled ...