Tornado Alley
States such as Missouri, Iowa, Minnesota, Wisconsin, Illinois, Indiana, and western Ohio are sometimes included in Tornado Alley. Research suggests that tornadoes are becoming more frequent in the northern parts of Tornado Alley where it reaches the Canadian prairies.
Harrah, Oklahoma
Oklahoma is located in a temperate region and experiences occasional extremes of temperature and precipitation typical of a continental climate. Harrah lies in an area known as Tornado Alley characterized by frequent interaction between cold and warm air masses producing severe weather. An average of 54 tornadoes strike the state per year.