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 sky may seem like a huge open playground for airplanes to fly without speed limits in any direction they wish. In reality, planes adhere to certain rules and follow fixed flight paths, much like ...

After waves of severe storms and heavy rainfall this month, the Jet Stream is shifting after the latest rounds of storms moved out of our State last night. Going forward, at least for now, the Jet ...

WASHINGTON -- The jet stream — America's stormy weather maker — is creeping northward and weakening, new research shows. That potentially means less rain in the already dry South and Southwest and ...

Dartmouth researchers used machine learning and long-term climate records to construct a timeline of jet-stream variability since 1901. Nearly all prior studies of the jet stream focus on the period ...

A Dartmouth study challenges the idea that climate change has caused large waves in the polar jet stream (pictured) in recent years as scientists have suggested. These large waves have brought ...

A sudden, dramatic shift in temperatures high in the atmosphere will dance with the La Niña weather pattern. There won't be a clear winner.