The next step upward to spring weather is showing in the extended forecast. This week and much of next week look and feel ...

Add Yahoo as a preferred source to see more of our stories on Google. This winter’s harsh run in the East is intensifying, with some of the coldest air so far this season plunging into Vermont this ...

The infamous weather pattern is actually partly influencing our weather as February ends. And it may again throughout the month of March.

Add Yahoo as a preferred source to see more of our stories on Google. This winter’s harsh run is intensifying, with some of the coldest air so far this season plunging into New Hampshire this weekend ...

Around the same time as the heat starts blasting Phoenix, the polar vortex — a system that usually keeps frigid air penned up near the North Pole — is forecast to send its chill deep into the Midwest ...

A polar vortex split is expected to bring frigid Arctic air to the Great Lakes and Northeast later this month. Temperatures could drop 15 to 25 degrees below normal, with single-digit lows possible in ...

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 ...

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.