Michigan and the Great Lakes are bracing for another cold shot later this month — down to single digits in places — as a polar vortex split in the stratosphere nudges frigid Arctic air southward.

A shift in the polar vortex earlier this spring is helping to set the stage for repeated chilly stretches across the central and eastern United States in the weeks ahead, with below-average days ...

WASHINGTON(7News) — If you’re in Washington, D.C., and wondering why highs will only be in the 30s Monday and Tuesday after a gorgeous, warm weekend, you aren’t alone. Chief Meteorologist Veronica ...

Florida State University researchers have created a method to forecast stratospheric polar vortex behavior months before ...