query: What states are included in Tornado Alley?
passage: 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[2] and storm chasers have long recognized the Great Plains tornado belt.[3]
passage: Tornado Alley
Florida: 12.2 Kansas: 11.7 Maryland: 9.9 Illinois: 9.7 Mississippi: 9.2 Iowa: 9.1 Oklahoma: 9 South Carolina: 9 Alabama: 8.6 Louisiana: 8.5 Arkansas: 7.5 Nebraska: 7.4 Missouri: 6.5 North Carolina: 6.4 Tennessee: 6.2 Indiana: 6.1 Texas: 5.9