Set in the Central Business District of Nairobi, Kenya, the ad depicts a woman on the street losing her umbrella cover to the violent wind.

FORBES: Funny African Commercial Of The Week: Trust Condoms

These violent storms almost always require that the wind speeds increase from 20 mph on the ground to more than 100 mph (horizontally) aloft.

CNN: The making of a nightmare tornado

The energy released in the updrafts then interacts with our second ingredient needed for violent tornadoes, the change of the wind direction and speed at you go upward from the ground.

CNN: The making of a nightmare tornado

As it came to life out in the Caribbean around October 22nd, Mitch's wind speeds had made weathermen class it among the most violent hurricanes on record.

ECONOMIST: After Mitch