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 ...

A jet stream plays a very important role when it comes to influencing weather patterns, particularly in bringing colder temperatures to different locations.

Last week's marathon winter storm was the result of a big dip in the jet stream. Here's why, and how we use the location of the jet stream to forecast.

Extreme weather caused by shifts in a jet stream seems to have brought summers of fires, failed harvests and rampant disease across Europe over the past 700 years.

The shifting jet stream has magnified wildfires and plagues. What’s next? When the bubonic plague reached England in the summer of 1348 — spread by fleas, lice, or infected humans, according ...

A multi-century climate record suggests that current Atlantic jet-stream variations are not the cause of an increase in extreme weather events.