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 ...

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 (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 ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Dangerously cold temperatures are expected across a large portion of the U.S. this week, impacting the Midwest, Mid‑Atlantic and ...

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 shifts, Arctic air can spill south, increasing the risk of snow and ...