The stratospheric polar vortex is entering its seasonal collapse. But that doesn’t mean calm weather is coming. What's ...

Winter weather is back in the East, but the extended forecast has some good news for milder weather later in March.

Winter Tightens Its Grip as Polar Vortex Reappears ...

Michigan and the Great Lakes are bracing for another cold shot later month as a polar vortex split in the stratosphere nudges frigid Arctic air south.

The polar vortex is a large area of cold, spinning air that sits near the North Pole and exists year-round. When it weakens or shifts, Arctic air can spill south, increasing the risk of snow and ...

The battle between spring and winter is playing out across the Northeast, with coastal areas expected to have brief spurts of 60-degree temperatures. A final Arctic blast looms late-week with ...

A rapidly intensifying storm system over the northern High Plains will move eastward toward the Great Lakes Thursday night, ...

The United States is getting slammed by a stretch of weather extremes, from flooding rain to record heat and late-season snow ...

This is read by an automated voice. Please report any issues or inconsistencies here. Nearly every U.S. region faces extreme weather: scorching Southwest heat, Arctic cold in the East and Midwest, ...