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.
Tennessee Tornado
The Tennessee Tornado is a roller coaster at Dollywood, in Pigeon Forge, Tennessee in the United States. It debuted April 17, 1999, and was Dollywood's first major coaster expansion as well as one of Arrow Dynamics' last major coasters. The ride opened in a valley location previously occupied by Thunder Express, an Arrow Dynamics Runaway Mine Train roller coaster relocated from Six Flags St. Louis in 1989 and opened in 2002 at Magic Springs and Crystal Falls.