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Illinois has had large tornado outbreaks in the past, including the tornado outbreak sequence of December 18–20, 1957 and the 1967 Oak Lawn tornado outbreak. Illinois is vulnerable to tornadoes with an average of 35 occurring annually, which puts much of the state at around 5 tornadoes per 10,000 square miles (30,000 km 2) annually. [1]
List of tornadoes in the May 1995 tornado outbreak sequence; Tornado outbreak sequence of April 1996; Tornado outbreak of April 15–16, 1998; List of tornadoes in the 1999 Oklahoma tornado outbreak; Tornado outbreak of April 27–28, 2002; List of tornadoes in the May 2003 tornado outbreak sequence; Tornado outbreak sequence of May 2003 ...
A deadly outbreak, including the deadliest and longest-tracked tornado in U.S. history–the Tri-State tornado, a massive F5 tornado that traveled 219 mi (352 km) across the three states of Missouri, Illinois, and Indiana, killing 695 people. Third-costliest U.S. tornado ever.
613 deaths in Southern Illinois. 695 deaths overall Deadliest single tornado in US history. Most extreme tornado in recorded history. Holds the record longest path length (219 miles, 352 km), longest duration (about 3.5 hours), and fastest forward speed for a significant tornado (73 mph, 117 km/h).
The outbreak included the Tri-State Tornado, the deadliest disaster in Illinois, the deadliest tornado in U.S. history, and the second-deadliest registered in world history. [ 4 ] [ 5 ] [ 6 ] The 219-mile-long (352 km) track left by the tornado, as it crossed from southeastern Missouri, through southern Illinois, and then into southwestern ...
The 1967 Oak Lawn tornado outbreak was a destructive tornado outbreak and severe weather event that occurred on April 21, 1967, across the central Midwest, in particular the towns of Belvidere and Oak Lawn, Illinois, United States.
The most "extreme" tornado in recorded history was the Tri-State tornado, which spread through parts of Missouri, Illinois, and Indiana on March 18, 1925. It is considered an F5 on the Fujita Scale , holds records for longest path length at 219 miles (352 km) and longest duration at about 3 + 1 ⁄ 2 hours.
In the midday and afternoon hours of March 18, 1925, the deadliest tornado in United States history and second-deadliest worldwide moved through Eastern Missouri, Southern Illinois and Southern Indiana, killing 695 people and injuring 2,027 more in what became known as the Great Tri-State tornado.