Tornado Alley
It has also been asserted that there are numerous Tornado Alleys. In addition to the Texas/Oklahoma/Kansas core, such areas include the Upper Midwest, the lower Ohio Valley, the Tennessee Valley and the lower Mississippi valley. Some studies suggest that there are also smaller tornado alleys located across the United States.
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.