Where is the Coriolis force lowest?

The Coriolis force is a result of the Earth's rotation and varies with latitude. It is strongest at the poles and weakest at the equator. The underlying reason for this is related to the rotational dynamics of the Earth. At the equator, the speed of rotation is greatest due to the larger circumference of the Earth, but the Coriolis effect depends on the change in position relative to the Earth's rotation. Since the equator has no change in the orientation of the wind relative to the rotation of the Earth, the Coriolis force effectively becomes zero there.

In contrast, at the poles, the Coriolis force is maximized due to the complete rotation around the axis of the Earth. This results in significant deflection of winds and ocean currents. Mid-latitudes experience a moderate Coriolis force, while low latitudes, though they have some Coriolis effect, are still considerably influenced by phenomena associated with the equator, leading to lesser deflection.

Thus, the Coriolis force is lowest at the equator because it does not influence the direction of moving objects.