As we look toward mid-December into January, the door is opening for some potentially significant winter weather.

For folks who long for cold, the weeks after Thanksgiving might just be a tease for some intense Arctic cold that could ...

A polar vortex — a large area of low pressure — is heading south from the Arctic, bringing with it cold weather across many ...

The culprit behind the country’s somewhat wacky weather, or at least part of it, is the (aforementioned) probable sudden ...

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

A combination of weather conditions may make it colder than usual across parts of the Central and Northern U.S. next week.

A rare stratospheric event is forecast to unleash bone-chilling air from a weakening vortex across the US and New England, ...

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

The phrase "polar vortex" has captured public attention and is now often misused to describe short-term bouts of frigid ...

There may be a disruption to the polar vortex due to an unusually early Sudden Stratospheric Warming event. Judah Cohen, a ...

By Thursday, Arctic air will funnel across the Great Lakes Basin, dropping temperatures and fueling strong winds.

This weather event may not be constant, but there will be cold waves over multiple days with single-day warmups mixed in.