Tornadoes occur in many parts of the world, but the largest amount can be found in the USA. Around 1,000 tornadoes hit the U.S. yearly from April to early June. "Tornado Alley" is a nickname for an area that stretches through Oklahoma, Kansas, Nebraska, east Colorado, Iowa, and Northern Texas where tornadoes occur. Compared with other states, Texas has the most frequent tornadoes, the highest numbers of deaths and injuries, and the greatest cost of damages.
Every year around 153 tornadoes take place here, usually in the afternoons. The average tornado runs with the speed of 40-64 km per hour. Winds inside a tornado can swirl at close to 150 km per hour. They stay on the ground for an average of just 4-5 minutes, but they can touch down several times. Tornadoes often form in the southwest as a part of thunderstorms. The average path of a tornado is 6.5 km long and 365 m wide but can be even 160 km long and a 1.6 km wide.