Alerts for cold weather are in effect for nearly half of the U.S. population, running from the northern Plains to the Gulf ...

The NWS has issued storm and extreme cold warnings this weekend as powerful Arctic winds plunge temperatures nationwide.

A polar vortex is slated to sweep most of the continental US bringing winter storm warnings and a hazardous freeze to ...

However, a deep freeze, thanks to the polar vortex dipping down from Siberia, is about to bring even harsher arctic blast to ...

Snow and winds are likely to trigger flight cancellations and cause headaches for people traveling to DC for Inauguration Day ...

The coldest weather of the season to date will be due to a phenomenon called a polar vortex, an upper-level jet stream that ...

Frigid air could reach as far south as Central Florida in the coming days, updated forecasts from the NWS suggest.

Los Angeles and other areas of California are at high risk of wildfires, but they're not alone. So are parts of Texas, ...

The coldest air of the season will descend across the U.S. this weekend and early next week, bringing subzero wind chills ...

That night, a Blue Norther plunged through and switched the direction of fire spread toward the south, as seen in the ...

A chance of snow showers and sleet has emerged in the forecast. Here are five things we know so far about next week's ...