The polar vortex weakens, bringing plunging temperatures and snow to millions across the U.S. this Thanksgiving. Experts warn ...

Once every two years there is a disruption of the polar vortex. So you get very strong warming like tens of degrees Celsius ...

Millions are set to see temperatures plunge over the Thanksgiving holiday period as the destablizing polar vortex sends ...

A record 81.8 million people nationwide are expected to travel for the Thanksgiving holiday, AAA projects. See the best and worst times to travel.

A disturbance in the polar vortex could spill icy cold air south into the United States much earlier than usual, the National ...

Antarctica's ozone hole is showing significant recovery, appearing smaller and breaking up earlier this year. Scientists ...

As winter approaches, Ontario is bracing for a significant weather event that promises to blanket the region in Arctic air and heavy snowfall. Forecasters predict that while the northern parts of the ...

The US National Weather Service warns that La Niña, the MJO and a rare Sudden Stratospheric Warming could bring winter-like ...

Meteorologist Kalin Mitchell explains how the looming polar vortex could bring cold temperatures and fuel heavy snowfall in parts of Ontario and Quebec.

High up in the atmosphere above the Arctic, something interesting is going on. The upper levels of the stratosphere, above 35 ...