The polar vortex is making a return to the forecast, but the counterintuitive weather feature is nothing to fear.

CLEVELAND — High above the Arctic, swirling like a giant icy crown, the polar vortex is a permanent feature of our atmosphere ...

The polar vortex is stirring up, bringing the earliest hints that the weather is changing with the new fall season. When is ...

A cold winter is likely in store for those in the northern U.S., with milder temperatures across the southern tier, according to NOAA’s National Weather Service winter outlook issued Thursday. The ...

The polar vortex is stirring up, bringing the earliest hints that the seasons are changing. When will Wisconsin see its first ...

A rare and abrupt disruption in the Arctic polar vortex is expected to impact spring temperatures across Europe and parts of the United States. Scientists are monitoring the event closely, as the ...

Temperatures are cooling in Illinois, which means the first snow of the season isn't too far away. Here's when to expect. the ...

North Carolina's first freeze typically occurs between late October and mid-November, depending on the specific location. The ...

HOUSTON, Texas (KTRK) -- With this most recent freeze now behind us, many Houstonians are probably wondering if another freeze could impact them this winter. When it comes to freezes, forecasters ...

The polar vortex is stirring up and bringing the earliest signs of changing weather. Here's when and what to know about the first frost in Pennsylvania ...

Mars’ north polar vortex locks its atmosphere in extreme cold and darkness, freezing out water vapor and triggering a ...