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Illinois has had large tornado outbreaks in the past, the most notable being the tornado outbreak sequence of December 18–20, 1957. 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 ]
The city of Springfield, Illinois saw two strong tornadoes track directly through the city from this storm. It also did damage near Sedalia , Columbia , and Mexico, Missouri . The deadliest tornado from this outbreak sequence came from another supercell; an F3 which killed 4 people near the town of Renick, Missouri .
Springfield, Illinois, which was struck by two tornadoes less than a month earlier, was hit again by tornadoes and damaging straight-line winds of up to 80 miles per hour (70 kn; 130 km/h), as was the St. Louis, Missouri area. [10] Wind damage was reported in Cincinnati, Louisville, Kentucky, and Indianapolis, among other cities. [4]
1975 Canton, Illinois, tornado; Marion, Illinois, tornado outbreak; 1990 Plainfield tornado; June 1990 Lower Ohio Valley tornado outbreak; Tornado outbreak sequence of May 6–27, 1995; 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 ...
Since its initial usage in May 1999, the National Weather Service (NWS) in the United States has used the tornado emergency bulletin — a high-end classification of tornado warning — sent through either the issuance of a warning or via a "severe weather statement" that provides updated information on an ongoing warning—that is issued when a violent tornado (confirmed by radar or ground ...
The 1990 Plainfield tornado was a devastating tornado that occurred on the afternoon of Tuesday, August 28, 1990. The violent tornado killed 29 people and injured 353. [1] It is the only F5/EF5 rated tornado ever officially recorded in August in the United States (unofficially the 1883 Rochester, Minnesota cyclone is considered an F5), and the only F5 tornado to strike the Chicago area.
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).