The forecast released Oct. 16 predicts where above- or below-normal temperatures and above- or below-normal precipitation are most likely.

The polar vortex is a broad, fast ribbon of cold air that encapsulates the Arctic high in the stratosphere. Stable, it confines cold air near the North Pole. Unstable, it is rocked and stretched out ...

The polar vortex, a mass of cold air over the Arctic, is beginning its seasonal strengthening. A strong polar vortex typically keeps the coldest air locked near the North Pole. A weaker or wobbling ...

History shows Kansans can expect their first freeze of the cold-weather season within the next month. Here's when and where they historically happen.

Brace yourselves; winter is coming. "Polar vortex" may have been the weather catchphrase of last winter, but it's coming back and it's bringing snow and freezing temperatures along with it. While it ...

A cold winter is in store for those in the northern U.S., with milder temperatures across the southern tier, according to ...

CHICAGO (WLS) -- Polar Vortex? Not quite, but Chicago weather is on pace for a cool down next week. "The jet stream will be buckling unusually far south for mid-July, allowing a cross polar flow of ...

The polar vortex is beginning to stir, signaling a gradual shift toward cooler, autumnal weather in the northern U.S. While temperatures are expected to cool, the Climate Prediction Center forecasts ...

CHICAGO (WLS) -- "Polar Vortex" is a dreaded term that we all have become accustomed too over the past few years. But what is it? The polar vortex is always present in the Arctic Circle. It is a broad ...

The polar vortex is stirring over the far north, which will lead to cooler weather, including some storms ... Mississippi, Family Watchdog help track, map data Food Network says longtime Mississippi ...

From record heat to Arctic collapse, the planet’s climate systems are colliding in ways never seen before. Scientists warn ...