Thomas McLaughlin, age 11, of El Sobran

Where are the jet streams located?

A jet stream is a. long, wavy ribbon of high speed winds. It is like a. flat oval tunnel with the fastest winds in the center. The tunnel may be 300 miles wide, but only about four miles high. They blow in the upper airs from 20,000 feet to 40,000 feet above the ground and most of them seem to blow from west to east.

Experts think that the jet streams form because of strong temperature contrasts in the weathery atmosphere below them. No one knows when one of them will form. No one can chart its path. One often forms over Japan and blows a wavy path a s far as New England. In winter, there are three routes which the jet streams tend to take over North America. One may blow over Canada, one over the Central States and one over the far Southland. But no one can tell when, or exactly where, to expect them.