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.
Indiana
In a 2012 report, Indiana was ranked eighth in a list of the top 20 tornado-prone states based on National Weather Service data from 1950 through 2011. A 2011 report ranked South Bend 15th among the top 20 tornado-prone cities in the United States, while another report from 2011 ranked Indianapolis eighth. Despite its vulnerability, Indiana is not a part of tornado alley.