Winnipeg is particularly vulnerable when the polar vortex shifts. Its location on the open Prairies gives Arctic air an ...

A powerful blast of Arctic air is set to hit the United States starting November 26, bringing dangerous cold and snow during ...

A weakening of the polar vortex and storms could cause travel hiccups around the country. Here's what to expect in New ...

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

A highly unusual disruption of the polar vortex is taking shape in the upper atmosphere this November, raising the odds of a ...

A SSW was the same weather phenomenon that led to the brutal ‘Beast from the East’ in 2018, which transported cold air from ...

Ken Mahan explains the “tug of war” that will determine our winter weather, when to know what you’re in for this Thanksgiving, and how he tracks changing conditions.

In 2014, the term “polar vortex” burst on the scene across Canada and the U.S. as temperatures plunged. In some places, it ...

Thanksgiving is this Thursday, Nov. 27, and there is a good possibility of some rain and snow across the region. The holiday has been observed every fourth Thursday since 1942, so has been as early as ...

Early-season stratospheric warming events spark hype around frigid temperatures. Learn the myths and the science about the ...

As the UK goes through a cold snap this week - forecasters have suggested that more Arctic air could be brought to Britain ...