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Tornado Alley, also known as Tornado Valley, is a loosely defined location of the central United States and Canada where tornadoes are most frequent. [1] The term was first used in 1952 as the title of a research project to study severe weather in areas of Texas , Louisiana , Oklahoma , Kansas , South Dakota , Iowa and Nebraska .
List of United States tornado outbreaks – 1910–1919 Outbreak Dates Region Tornadoes Casualties Notes Tornado outbreak of November 11, 1911: November 11, 1911: Midwestern United States: ≥9: 13 fatalities, 117 injuries: Outbreak was produced by a large and dynamic storm system. F4 struck Janesville, Wisconsin, and killed nine people.
The United States has the most tornadoes of any country. Many of these form in an area of the central [c] United States known as Tornado Alley. [5] [6] This area extends into Canada, particularly the prairie provinces and Ontario. Activity in Canada, however, is less frequent and intense than that of the US. Strong tornadoes occur in northern ...
The 2011 Super Outbreak was the largest tornado outbreak spawned by a single weather system in recorded history; it produced 367 tornadoes from April 25–28, with 223 of those in a single 24-hour period on April 27 from midnight to midnight CDT, [4] [11] fifteen of which were violent EF4–EF5 tornadoes. 348 deaths occurred in that outbreak, of which 324 were tornado related.
At one point, the tornado was moving with a forward speed of 73 miles per hour (117 km/h), setting the record as the fastest forward moving violent tornado in history. The tornado also became the deadliest tornado in United States history as well as the longest traveled tornado in history.
This article's lead section may be too long. Please read the length guidelines and help move details into the article's body. (August 2024) Tornadoes in the United States 1950-2019 A tornado strikes near Anadarko, Oklahoma. This was part of the 1999 Oklahoma tornado outbreak on May 3, 1999. Tornadoes are more common in the United States than in any other country or state. The United States ...
These are some notable tornadoes, tornado outbreaks, and tornado outbreak sequences that have occurred around the globe. Exact death and injury counts are not possible; especially for large events and events before 1955. Prior to 1950 in the United States, only significant tornadoes are listed for the number of tornadoes in outbreaks.
List of United States tornadoes from September to December 2023. December 2023 Tennessee tornado outbreak; Tornadoes of 2024. List of European tornadoes in 2024; List of United States tornadoes in 2024 List of United States tornadoes from January to March 2024. January 8–10, 2024 North American storm complex; Tornado outbreak of March 13–15 ...