The polar vortex is coming back. After a half-month hiatus, frigid air will again surge across the United States beginning this weekend through next week, as the unusually cold blob of air dips ...

This is because the polar vortex has stretched and sent cold air south into the United States ten times this season. Typically, this might happen only once, maybe two or three times in a normal ...

Computer forecast models say that the polar vortex is likely to stretch again, sending cold air south somewhere and probably to the United States, around March 5, Cohen said.

When high pressure builds into the Arctic Circle, the polar vortex is pushed south and away from the pole, giving it an opportunity to sink into the United States.

Computer forecast models say that the polar vortex is likely to stretch again, sending cold air south somewhere and probably to the United States, around March 5, Cohen said.

The winter weather outlook from both Farmers' Almanac and the Old Farmer's Almanac predict tough conditions ahead for 2025. Here's what to expect.