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A superrotating wind (or prograde wind) is a wind carrying atmosphere around a world (planet or moon) in the same direction as the world is rotating (prograde). The notion can seem non-intuitive even though in daily life, there is nothing unusual about a wind coming from the west (the prograde direction on Earth); wind can as easily be prograde as retrograde, and the Coriolis force is a mechanism for producing winds in each of these directions, specifically in Hadley cells and similar circulation patterns. On Earth, the westerlies and jet streams are examples of superrotating winds.
Planets and moons with multiple zonal flows, such as Jupiter and Saturn typically have jet streams (in their case, often shortened to jets, which demarcate their visible bands), some being prograde (superrotating jets). Venus has a strong superrotating wind, reaching 700 km/hour and Titan has similar superrotating winds. The possibility and effects are of interest in the study of extra-solar planets.