A cold front will bring plunging temperatures and snow to the Northeast this week. Polar vortex disruptions, caused by Sudden Stratospheric Warming, drive extreme cold southward. Officials advise ...

WASHINGTON (AP) — Warm Arctic waters and cold continental land are combining to stretch the dreaded polar vortex in a way that will send much of the United States a devastating dose of winter weather ...

It's that time of the year! An extensive and prolonged Arctic outbreak is on the way to impact much of the United States. From the Rockies through the Northeast and Southeast, temperatures will plunge ...

At least nine deaths are now connected to the polar vortex that's spreading dangerously cold air and causing major disruptions across the Midwest and Northeast. Nearly 90 million people are in the ...

Something unusual may be brewing in the stratosphere, and meteorologists say it could change the course of the winter forecast. The atmosphere is at a "critical juncture," and what happens in November ...

If you’re among the Canadians hoping for a white Christmas this year, there’s good news and bad news. The good news is that some forecast models point to conditions favourable for snowfall. The bad ...