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.
Tornado outbreak of mid-November 2005
The tornado outbreak of mid-November 2005 was a tornado outbreak on November 15, 2005, in the Midwestern United States. It occurred along a cold front separating warm, humid air from the southeast from cold Arctic air to the north and northwest. At least 50 confirmed tornadoes have been reported in the central United States in the states of Alabama, Arkansas, Illinois, Indiana, Kentucky, Missouri and Tennessee over that afternoon and evening. Strong winds and large hail caused additional damage throughout the region. The National Weather Service confirmed 49 tornado touchdowns during the outbreak.