A tornado is a violent windstorm characterized by a twisting, funnel-shaped cloud. The word "tornado" comes from the Spanish or Portuguese verb tornar, meaning "to turn." Tornadoes form in storms all around the world, most famously in a broad area of the American Midwest and South known as Tornado Alley. Although in pure number of incidences, the United States experiences more tornadoes than any other country, the United Kingdom is the most proportionally tornado-prone country for its size. ...