1.  Tornadoes in USA are very frequent. Probably the largest number of tornadoes occurs southeast inTexas, Louisiana, Mississippi and Florida. In this areas are many tornadoes every year and they are a popular place for „ hitchhikers tornadoes“  Other areas of the United States, where tornadoes occur, are areas in the middle of the USA. Most in the State of Oklahoma, north Texas and on the border of Nebraska, Colorado and Kansas.

2. On October 1927 was in St. St. Louis, Missouri most destructive tornado of F3 type. At this event died 28 people. On March 1925 hit USA the largest tornado in American history. Tornado´s name is „ Tornado of three countires“. Tornado hit areas in northeast Ellington, Missouri and northwest Princeton, Indiana. At this event died 695 people.

3.  On August 2007 big tornado with flash owl nest damaged 90% houses in Northwood, Frand Forks Country and North Dakota. Fortunately, at this event died only one person. On May 1840 was in United States the second largest tornado with name „ The Great Natchez Tornado“. This tornado hit plantations. At this event died 317 people.