Most of the nation is in good shape on Wednesday and will be warmer on Thursday. The arctic air is coming, but not yet. The ...

NEW ORLEANS (AP) — The vast majority of Americans are about to get an extended taste of frigid Siberian weather. Another ...

The polar vortex is a long-established weather term ... To the west of that plunge, in California, it's hot and dry. But to the east and just above the dip, it's a taste of the North Pole.

Many cities across north America will feel the effects of the polar vortex, but who will see -50 wind chills for a prolonged period of time?Meteorologist Melinda Singh has all the details.

The week began with a biting cold snap that hammered much of the U.S., the product of a jet stream that slips out of its ...

Then, catastrophe in California, with wind-whipped flames ... That means more energy bouncing off and warping or moving the polar vortex, scientists say. And climate change is also messing with ...

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

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

A deep freeze, thanks to the polar vortex dipping down from Siberia, will bring frigid temperatures to nearly 300 million ...

The polar vortex is expected to reach the Utah-Idaho border sometime in the late afternoon and evening Friday as it continues ...