The tornado is caused by pressure difference of the giant air funnel. It rotates at a breakneck pace and draws in more or less large objects. In America it is destructive atmospheric phenomenon called the tornado.
Tornado is a rapidly rotating funnel-shaped tornado, falling from a cumulonimbus cloud or formed under Cumulus rain cloud and on the ground. Approaching, tornado sounds, similar to grohotun trains or on the sound of the waterfall.
How does this terrible phenomenon? First looms ominous storm cloud. Becoming extremely stuffy and hot. Then light wind rises and begins to drizzle rain. Suddenly the temperature drops sharply. Comes the unbearable cold. From the overhanging clouds lowered the pole, rotating at great speed.
Meet him with the surface of the earth moves a giant vortex. If they are closed, there is a pillar, as if connecting heaven and earth. He rolls with a deafening roar, sucking in everything along the way: people, cars, houses, trees. It lasts about ten minutes. Then it all calms down, and on earth there is a strip of several kilometres in length and width from 50 to 400 meters, which look as if they drove a giant bulldozer.
These tornadoes are so strong that it raised in the air and carry long distances not only garbage, but heavy objects. There are cases when the tornado lifted and moved in the space of roofs, walls, trees and cars.
Often tornadoes formed in the United States, in the States of Texas and Ohio. Warm moist air from the Gulf of Mexico is facing in the U.S. with cold air from Canada and the dry air from the Rockies. The result is a large number of thunderstorms, heavy rain, squally winds, which carry the threat of tornadoes.
Each year over America sweeps around 900 tornadoes. The strongest tornado was raging over the Middle West of the USA of 18 March 1925. He took 689 lives.