DC swings from a warm 50 weekend to a cold start to the week, with highs in the 30s and a wintry mix as the polar vortex and ...

For millions of people living in the central and eastern United States, it’s suddenly going to feel like spring — or even summer — later this week into next.

Add Yahoo as a preferred source to see more of our stories on Google. The polar vortex is a large area of cold, spinning air that sits near the North Pole and exists year-round. When it weakens or ...

WASHINGTON - All eyes are on this weekend's potential snow and if we're expecting to get some accumulating snow. What we know Models continue to signal a healthy storm riding along the cold air ...

WASHINGTON (AP) — Warm Arctic waters and cold continental land are combining to stretch the dreaded polar vortex in a way that will send much of the United States a devastating dose of winter weather ...

A rare and disruptive atmospheric event may soon unfold, raising the prospect of significant weather shifts across the U.S.