It's like "bomb cyclone" or "firenado." It seems like the sort of phenomenon that would be responsible for the ...

An Arctic blast that began in the northern plains on Saturday spread bitter cold from the Rockies through the East Coast and ...

A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of ...

An arctic blast will send temperatures across the United States plummeting as bitterly cold air that originated in Siberia ...

The effects of the polar vortex are expected to reach Texas on Monday and bring freezing or below-freezing temperatures ...

Parts of Mississippi can expect freezing temperatures, lows in the teens in the coming week. Know how to prep your home, ...

A series of disturbances in the atmosphere is sending the polar vortex south (again) next week with a burst of even colder ...

A polar vortex is currently hitting the United States, with schools closed in many areas and at least four deaths caused by ...

Cold air from the arctic sometimes dips southward across the American plains. What to know about the polar vortex.

We've already fallen as low as 1° this year. Another dip in the polar vortex makes that possible for Cincinnati again next week.

Up next: another visit from the polar vortex. An Arctic air mass plunges into the Lower 48 next week. This brings the potential for multiple nights with subzero wind chills in the Ohio Valley.