Coeur dâAlene sits on a small spit at the north end of a large lake of the same name. The setting is decidedly attractive, with lake views on three sides of downtown and mountains on all sides looking south. The mountains are densely forested with fir trees, while trees in the immediate area of the town are sparse.
Each hemisphere has two primary jet streams â a polar and a subtropical. The polar jet streams form between the latitudes of 50 and 60 degrees north and south of the equator, and the subtropical jet stream is closer to the equator and takes shape at latitudes of 20 to 30 degrees.
A: The jet stream is often described as a fast-moving river of air that forms along the boundaries of the cold and warm air masses that surround the Earth. The greater the temperature contrast, the stronger the jet stream. Low-pressure areas (storms) form along these boundaries and are often near the jet streams. These jets and lows are really waves in our ocean of air and like other waves can interact, amplify and strengthen. Storms don't create the jet stream, but a strong jet stream can help create a very powerful storm.