Tornadoes do occur in the Southern Hemisphere, albeit at a greatly reduced frequency than in the Northern Hemisphere, primarily because it includes the U.S., which hosts about 75 percent of the ...

Usually, tornadoes in the U.S. rotate counterclockwise. Coriolis force, imparted due to the Earth’s rotation, causes air around low centers to circulate counterclockwise in the northern hemisphere.

Mike Moss: It is true that large scale low pressure systems in the Southern Hemisphere have winds that spiral into them in a clockwise manner, as opposed to the counterclockwise flow around lows in ...