The main difference between mid-latitude cyclones in the northern and southern hemisphere is their rotation direction. Mid-latitude cyclones in the northern hemisphere rotate counterclockwise, while in the southern hemisphere, they rotate clockwise. This is due to the Coriolis effect, which is a result of the Earth's rotation. The Coriolis effect causes moving air to be deflected to the right in the northern hemisphere and to the left in the southern hemisphere. As a result, the circulation around mid-latitude cyclones is opposite in the two hemispheres.
