Tornadoes are whirl winds that rotate at high speeds. Tornadoes form when warm, moist air collides with cold, dry air. Tornadoes are common occurrence in North America and are also known to occur in some European countries as well. Tornadoes occur particularly in north east region of North America.
Tornadoes are ranked by severity by what we call the Fujita Scale. Tornadoes destroy trees, power lines, cars and houses. Most of tornado victims are killed by flying debris. Objects are blown around at high speeds and become lethal projectiles.
