Tornado Alley
The term was first used in 1952 as the title of a research project to study severe weather in areas of Texas, Oklahoma, Kansas, South Dakota, Iowa, Missouri, Nebraska, Colorado, North Dakota, and Minnesota. It is largely a media-driven term although tornado climatologists distinguish peaks in activity in certain areas and storm chasers have long recognized the Great Plains tornado belt.
Norman, Oklahoma
Norman lies within Tornado Alley, the region of the United States where tornadic activity is most frequent. The city has a tornado season lasting from March through June, with over 80% of all reported tornadoes occurring during these months. The Oklahoma City metropolitan area, including Norman, is the most tornado-prone area in the United States. As recently as May 10, 2010, a tornado outbreak occurred in southeastern Norman that resulted in the loss of multiple homes and businesses. On April 13, 2012 Norman was struck by a weak tornado. On May 6, 2015, the northwestern part of Norman was hit by a weak tornado.