After a very mild fall across most of Canada, many places experienced one of their coldest starts to December in 35 years. Colder-than-normal temperatures dominated the first half of December from the ...

Michigan is experiencing frigid temperatures and heavy snow due to a dip in the jet stream, not the polar vortex. The polar vortex is a large-scale cyclone of cold air that typically stays far north ...

New York is expected to experience one last chill with below-average temperatures from March 24–30. This final cold blast is due to the lingering effects of a displaced polar vortex over eastern ...