One knot equals 1.1 mph. The red flags indicate wind direction. For up-to-date maps of the jet stream (and other weather-related maps) visit the FNMOC Web site.

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 ...

Most of the U.S. is expected to see less snow this year, continuing a long-term trend of snowfall decline as global ...

Last week's marathon winter storm was the result of a big dip in the jet stream. Here's how the jet stream works, and how we ...

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 ...