You’ve almost certainly heard of the polar vortex. But what about "sudden stratospheric warming," a weather term that’s started making the rounds on social media? They’re related to one another, and ...

New York is being hit by an arctic polar vortex, making temperatures drop hard overnight after a snow storm hit Sunday. Gov. Kathy Hochul declared a state of emergency on Sunday, including Oneida ...

The polar vortex will engulf much of North America as we head into next week, with temperatures dipping down into the -20s and -30s in some Canadian provinces. Even states like the Carolinas, Georgia, ...