Jet Streams On Earth and Jupiter Tues. These rivers of air are often collectively referred to as the jet stream, and they form at the boundaries of warm and cold air. Speeds average between 50 and 100 m.p.h. These separate bands of wind snake about, separating and combining at various times. The course of the fast winds affect air masses, which in turn affect the course of the winds.
Winter storms tend to track along the jet streams.
A storm's energy, in the form of increased thunderstorm activity, alters the path of the polar jet stream, typically kicking it further north, where it can block Arctic air from moving into the East. The Jovian jets zip along at up to 300 m.p.h. On Jupiter, the jets control the planet's bands of color. Some of the chemicals condense to form clouds. Depending on the rate of updraft and other factors, the clouds can have different colors.