When the polar vortex stumbles, the weather at ground level can pivot from mild to brutal in a matter of days. A circulation that usually spins quietly above the pole can suddenly send lobes of Arctic ...

Three separate rounds of Arctic air have already swept across the central and eastern United States through mid-December, ...

With all this warming weather, you may be wondering if winter is coming back. There are signs winter will return. A researcher who tracks the polar vortex says he sees changes with the vortex ...

STATEN ISLAND, N.Y. — If you’ve been keeping a tab on winter forecasts, you’ve likely heard the term “polar vortex” and the potential impact it may have on the upcoming season. But exactly what is the ...

A researcher expects the polar vortex to strengthen over the next two weeks. This has a big impact on our day-to-day weather here in the Great Lakes region and even the Northeast. Judah Cohen, ...

FARGO — The term “Polar Vortex” came into vogue a few winters ago and it still gets tossed around every winter. Most of the time, however, the term is misused and misunderstood. The Polar Vortex is an ...

This is what a split in the polar vortex looks like! Highlighted by the red boxes, you can see two distinct circulation centers, versus strictly one. This allows for cold air to flood southward into ...