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.
Tornado (ProSlide ride)
The first Tornado slides opened at Mountain Creek Waterpark, Six Flags Hurricane Harbor: New England and Splashin' Safari in 2003. To this date, ProSlide has installed 97 Tornados.