Moving at roughly 20,505 miles per hour along the distant world's equator, it’s the fastest known jet stream that wraps ...

The animation below illustrates the Futurecast 850 millibar Temperature, which clearly shows the Arctic Air spilling south.

How Would You Define a Jet Stream? The jet stream, one of the most dramatic forces of nature, was discovered during World War II when aviators first tried to cross the Pacific. This strong wind ...