When people refer to "the jet stream" they are usually referring to the polar-front jet stream or the subtropical jet stream, two major currents that shape weather patterns around the world.

Planes even use it to cut down on fuel consumption and travel times. There are usually two jet streams in each hemisphere, the polar jet and the subtropical jet. When we talk about "the jet stream ...

Given the pattern the jet stream is about to enter, this might be the tip of the iceberg. Beginning this weekend, the atmosphere will take on an alignment that has been linked to extreme weather ...

The jet stream can usually get to speeds this high only in the winter because temperature differences between the north and south are maximized. Temperatures on Tuesday hovered around minus-10 to ...

The jet streams usually move at 50 miles an hour, but they can exceed one hundred miles per hour and sometimes reach peak speeds over two hundred miles per hour at their core. As with any river ...

Airplanes use it like a highway. If flights are heading eastbound across the Atlantic, they surf the jet stream, usually shaving an hour or more off their journeys. Westbound flights take longer ...

On the other hand, a slower, more buckled jet stream can lead to areas of higher pressure taking control, which usually provides dry skies, moderate winds, and less stormy weather. The jet stream ...