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 ...

The 2017 Thomas Fire, one of the largest fires in state history, was sparked by Southern California Edison power lines that ...

That means more energy bouncing off and warping or moving the polar vortex ... several celebrities, including Billy Crystal, Mandy Moore and Jhené Aiko, had lost homes. Less than 72 hours ...

But during the winter, it is joined by a second atmospheric phenomenon dubbed the polar vortex. This swirl of frigid air, located more than 10 miles above Earth’s surface, strengthens each year ...

One of the key players in these dramatic shifts is something called the polar vortex. The polar vortex is a massive area of cold air located high in the atmosphere, typically spinning over the ...

What’s shaping up to be the most expansive polar vortex in over a decade is about to plunge much of North America, including nearly all of Canada, into the coldest temperatures the country has ...

These outbreaks can happen when the polar vortex is in a weaker state, allowing cold air that is normally confined to the north to break off and move further south. Some experts say this is ...