a Newsweek map shows. The powerful 115 mph upper-level jet stream winds will heighten storm conditions from eastern Texas to western Mississippi. The National Weather Service (NWS) has issued an ...

So what is the jet stream? And why is it there? Perhaps your image of the jet stream comes from maps broadcast during the weather portion of your local news. You know the kind: the ones where ...

You can't see it above you, but the jet stream's strong winds can have a big influence on the weather you see, and even your flight time.

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.

Temperatures could soar to 24C as weather maps for the UK turn a dark orange thanks to the jet stream, new maps and charts ...