The cause of the week-long deep freeze? A polar vortex collapse. Now, meteorologists are calling for another collapse in the middle of March, one that could plunge the U.S., Canada, and parts of ...

This is being driven by a break down in the polar vortex allowing the cold air ... is the very dry air moving in along with the cold. Dew points are a measure of how much moisture is in the ...

This is due to what meteorologists call the “polar vortex”, a jet stream of extremely ... "I like to get nostalgic," Wheeler said. "I’ll point out other cold snaps that were historically ...

RELATED: Polar vortex is bringing bitterly cold temps ... reflected in very low dew points. The center of this Arctic high-pressure system is forecast to position itself northwest of our region.

The Polar Vortex in the upper atmosphere has disintegrated after the intense warming of the stratosphere in mid-March. Currently, its remains are traveling eastward across Canada to the United States.

Accuweather Senior Meteorologist Paul Pastelok says the March polar vortex disruption is one of the largest meteorologists have seen in a long time. A polar vortex is a large area of low pressure ...