The majority of the United States will experience chilling temperatures due to a blast of arctic air from Canada. The Midwest ...

Much of the nation east of the Rocky Mountains is hunkered down for what could be the worst winter storm of the season.

Another Arctic blast is on the move toward the U.S., bringing the potential for bitter cold in Massachusetts. The Climate Prediction Center (CPC) is forecasting a weakening of the polar vortex, which ...

What is the polar vortex? This article explains what a polar vortex is in simple terms, how it influences winter weather in the U.S., and why meteorologists talk about it during major cold events.

The polar vortex is weakening, and pockets of cold air are expected to break off and travel south into the United States — with some Arctic air expected to encroach on New England after Thanksgiving, ...

Bitingly cold Arctic air keeps pummeling the U.S. with ruthless cold snaps—despite warming winters nationwide. A study explains why: the solution lies far above your head, in the upper atmosphere ...

An Arctic blast is expected to bring below-average temperatures to the central U.S. and New England in late November and early December. A weakening polar vortex, influenced by a rare weather ...

The frigid temperatures, massive snow and deadly ice storm taking shape east of the Rockies might seem to conflict with life on a rapidly warming planet. But all of these things still happen, even ...