On the other hand, in the Southern Hemisphere, hurricanes and such spin clockwise and high pressure systems go counter-clockwise. That's due to the Coriolis Force -- which is caused by the Earth's rotation. The Earth spins faster at the equator than the poles.
Low pressure is due to areas of rising air, which then start to spin counter-clockwise due to the Coriolis Force. High pressure is tied to sinking air, which the Coriolis Force turns the air clockwise. In tomorrow's column, we'll deal with what happens if a hurricane crosses into the other hemisphere.