Temperatures are plunging to levels not seen since 2016 as the polar vortex dips south. Meteorologist Rhythm Reet breaks down ...

More snow is on the way for southern Ontario, with a widespread shot occurring on Wednesday. That will be followed by ...

Alabama braces for another polar vortex blast bringing well below freezing temperatures. How cold will temperatures get? Here ...

The majority of the United States will experience chilling temperatures due to a blast of arctic air from Canada. The Midwest ...

The big winter (and popular) topic is dusted off very early this season as frigid air plunges south next weekend. But what is ...

The severe weather pattern is caused by disruption of the polar vortex, which normally remains uniform over the North Pole.

The polar vortex is set to bring a winter storm to parts of Mississippi with ice, snow. But extreme cold will last for days.

Extremely cold air is going to take over Michigan, as the center of the Polar Vortex drops far south to just north of ...

Jupiter and Saturn's different polar storms reveal clues about planet interiors: Saturn has harder bottom than Jupiter.

Year-round, severe, Artic air is usually kept tightly contained in the North Pole. Arctic wind patterns create a sort of wall ...

A polar vortex is expected to bring two surges of extremely cold air to the U.S. in January. Here's what to know in Middle ...

A 'major snow storm is headed to the Northeast, AccuWeather says, bringing what could be several inches of snow to NJ. Here's ...