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Earth's rotation is responsible for something called the Coriolis effect, which is what causes hurricanes to spin. How it operates is complicated to explain, but in simple terms, relative to an observer on earth air currents in the northern hemisphere get deflected to the right, and those in the Southern Hemisphere are deflected to the left. This means that low pressure systems such as hurricanes will rotate counterclockwise and clockwise respectively.

If it were not for this effect then hurricanes would never develop, and would instead remain as disorganized clusters of thunderstorms.

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12y ago

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