Across the Northern Hemisphere, familiar seasons are starting to feel unfamiliar. Heat waves linger, cold snaps arrive out of ...

There is definitely a major rearranging of the weather pattern around the northern hemisphere underway. It is going to take a ...

Behind all the snow, the arctic air moves in Sunday. Lows fall to the single digits through the morning and we won't warm up much more than 8 or 9 degrees through the afternoon. LIVE RADAR // LATEST ...

Arctic air originates near the polar regions and is among the coldest air masses on Earth. It typically stays locked in ...

A lobe of the polar vortex is currently parked over Hudson Bay, and Arctic air continues to ooze south out of Northern Canada, setting its sights on millions of Canadians in the days ahead. Here’s the ...

A weakened polar vortex is pushing frigid Arctic air into the central and eastern United States. Michigan will experience its coldest temperatures over the weekend, with some areas dipping below zero.

With over 170 million Americans facing below-average temperatures, even colder air may be on the horizon thanks to the displacement of the polar vortex that will lock in the feel of winter and park ...