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The 2009 Super Derecho was an extreme progressive derecho and mesoscale convective vortex (MCV) event that struck southeastern Kansas, southern Missouri, and southwestern Illinois on May 8, 2009. [ 9 ] [ 10 ] Thirty-nine tornadoes, including two of EF3 strength on the Enhanced Fujita Scale , were reported in addition to high non-tornadic winds ...
Radar track of the derecho from August 10 at 2 a.m. CDT to August 11 at 4 ... (spreading south toward southern Illinois) Winds to 70 mph (110 km/h) Hail to 1.5" (3.8 ...
Chanute Air Force Base, Rantoul, Illinois (closed in 1993) Hanna City Air Force Station , Hanna City, Illinois (closed in 1968; now site of an FAA Long Range Radar ) Scott Air Force Base , Shiloh, Illinois
In southern Illinois, the weather service office in Lincoln said the Little Wabash River was within several inches of impacting U.S. Route 50, a major highway that runs from Sacramento, California ...
Southern Illinois is a region of the U.S. state of Illinois comprising the southern third of the state, principally south of Interstate 70.Part of downstate Illinois, it is bordered by the two most voluminous rivers in the United States: the Mississippi below its connection with the Missouri River to the west and the Ohio River to the east and south, with the tributary Wabash River, extending ...
In 1974 another radar was installed in Marseilles greatly improving the radar coverage in Central Illinois. [2] A new radar, WSR-74C, was installed in Moline and helped the Peoria NWS issue severe weather warnings for the region. [2] In 1980 the Springfield office received a WSR-74C radar system to use for local warning operations. [2]
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 ]
The Marion tornado outbreak was a small, severe tornado outbreak that affected southern portions of the Midwestern United States on May 29, 1982.. Tornadoes touched down in the states of Illinois, Missouri, and Indiana, with Marion, Illinois, being the hardest hit.