The direction of travel of midlatitude wave cyclones is controlled largely by the polar jet stream.

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Midlatitude wave cyclones, also known as extratropical cyclones, are generally driven by the strong westerly winds of the polar front jet stream, which blows from west to east across the midlatitudes. These cyclones typically follow the same general path as the jet stream, although their exact track and intensity can be influenced by various factors such as ocean temperatures, topography, and atmospheric stability.

The Direction of Travel of Midlatitude Wave Cyclones Is Controlled