Major cities across the Northeast and Midwest are facing temperatures 10-20 degrees below average, according to forecasters.

Arctic air originates near the polar regions and is among the coldest air masses on Earth. It typically stays locked in ...

Michigan is set for several days of frigid temperatures and heavy lake-effect snow as Arctic air continues its slow march ...

NORFOLK, Va. — Have you ever wondered why some winters are mild while others bring freezing temperatures and snowstorms? One of the key players in these dramatic shifts is something called the polar ...

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 ...

At the same time, every hurricane that formed, including the three powerful Category 5 storms, steered clear of the U.S. mainland. Both scenarios were unusual – and they were largely directed by the ...

We’ve got two storm systems that’ll bring impactful weather to the Stateline, with the first arriving Thursday and the second ...

The monotony of the Texas summer can get exhausting. Day after day of temperatures in the upper 90s and triple digits may have you already dreaming of the first strong cold front that arrives in fall.