Tornadoes

Tornadoes are of the element air! And so i am posting this post under the element air.
They come in many different sizes but they are all generally in the shape of a funnel, the narrow end of which is in contact with the the earth. The wide end is usally in contact with the base of a comulonimbus cloud and rarely with the base of a cumulus cloud! The end of the tornado that is in contact with the ground is usually surrounded with the debris that it has picked up.
Usually tornadoe's wind speeds are between 40 and 110mph and are about 75 meters across. They are able to travel a few miles before they break up. Some can reach wind speeds of up to 300mph and can be as wide as 1 mile and can travel for dozens of miles. The only continent that a tornado has not been seen on is Antarctica and most of them occur in America!

I got this image from http://www.uwm.edu/~kahl/Images/Weather/Severe/multiple_tornadoes.html