The polar vortex is making a return to the forecast, but the counterintuitive weather feature is nothing to fear.

In an early sign of the winter weather that's coming, the dreaded polar vortex is making news yet again. The polar vortex is "ramping up from its summer slumber," said meteorologist Judah Cohen in an ...

CLEVELAND — High above the Arctic, swirling like a giant icy crown, the polar vortex is a permanent feature of our atmosphere ...

While much of the nation is predicted to be mild, the Almanac foresees a chilly and snowy winter in North Carolina. Published ...

Temperatures are cooling in Illinois, which means the first snow of the season isn't too far away. Here's when to expect. the ...

The Pacific Ocean along the equator is where a phenomenon called La Niña develops. La Niña is the “cool sister” to El Niño.

The Northeast and Mid-Atlantic States: For this region, a weak La Niña can be very unpredictable. Sometimes the jet stream’s ...