Tornadoes happen in both hemispheres.
The winds in a tornado spin, so the wind itself can come from any direction. Except for rare cases, tornadoes in the northern hemisphere rotate counterclockwise while those in the southern hemisphere spin clockwise.
A tornado in the southern hemisphere is still called a tornado.
A tornado that spins in the opposite direction is known as an anticyclonic tornado. These tornadoes are rare and rotate clockwise in the Northern Hemisphere and counterclockwise in the Southern Hemisphere.
In the northern hemisphere the right side of a tornado is generally worse. Since most tornadoes in the northern hemisphere rotate clockwise the winds right side of the tornado will be equal to the speed at which it spins plus the speed it is moving at. The opposite is true in the southern hemisphere.
Most tornadoes in the southern hemisphere spin clockwise.
Anticyclones in the northern hemisphere rotate clockwise while those in the southern hemisphere rotate counterclockwise.
A tornado is a very localised intense low pressure system. In the Northern Hemisphere it will rotate anticlockwise, similsr to a hurricane/low pressure system. In the Southern Hemisphere it will rotate clockwise.
A tornado that spins in the opposite direction from normal (e.g. clockwise in the northern hemisphere) it is called an anticyclonic tornado.
In the northern hemisphere, ocean currents generally flow clockwise due to the Coriolis effect, which is caused by the Earth's rotation. This effect causes moving fluids to curve to the right in the northern hemisphere and to the left in the southern hemisphere.
counter clockwise in the northern hemisphere, clockwise in the southern hemisphere. However, about 0.1-1% of tornadoes are exceptions to this.
The vast majority of tornadoes have cyclonic rotation, meaning that those in the northern hemisphere rotate counterclockwise while those in the southern hemisphere rotate clockwise. About one tornado in every thousand breaks this trend.
In the southern hemisphere, ocean currents flow clockwise due to the Coriolis effect.