Dangerously cold temperatures combined with wind gusts up to 60 mph are expected to cause life-threatening conditions across parts of the Midwest, Mid-Atlantic and Northeast to close out the week, ...

"This work shows that a large portion of subseasonal to seasonal variability is not random." ...

WASHINGTON — 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 later this ...

More than 95 million people in the U.S. are facing gripping cold Tuesday as a polar vortex sends temperatures plunging to record levels, closing schools, bursting pipes and forcing communities to set ...

A polar vortex split high in the stratosphere is expected to send frigid Arctic air toward Michigan and the Great Lakes. The event could bring colder-than-normal temperatures and late frosts to the ...

Forecasters are warning that the breakdown of the polar vortex high above the Arctic will not bring relief from winter, but instead lock in a brutal stretch of cold for millions across North America ...

At least five people have died as dangerous winter weather continued to take hold in multiple states on Monday. The polar vortex made many roads treacherous, forced school closures and caused ...

It’s an understatement to say it’s been a very cold winter. And it’s not close to being over. Reviewing our longer-term weather patterns, we are likely in for more freezing days ahead. You can thank a ...