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The May 2009 Southern Midwest 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.
This page documents notable tornadoes and tornado outbreaks worldwide in 2009. Strong and destructive tornadoes form most frequently in the United States, Argentina, Brazil, Bangladesh, and Eastern India, but can occur almost anywhere under the right conditions.
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] Peak tornado activity occurs between February and May, but storms can and have produced tornadoes in the winter.
A history of twisters: Tornadoes in Illinois 2009. The National Oceanic and Atmospheric Administration has been tracking tornadoes for decades. This interactive map, which contains data from...
19 sie 2009 · A vigorous upper-level disturbance in conjunction with a warm front lifting northward through central Illinois triggered strong to severe thunderstorms during the afternoon and evening of August...
8 maj 2021 · On Friday, May 8, 2009, an extreme derecho struck areas of Kansas, Mo., and Illinois. The term "derecho" means "directionally straight" in Spanish. It's a straight-line, widespread and...
This document provides facts about a windstorm known as a derecho that caused extensive damage along a path from western and southern Kansas through southern Missouri, northern Arkansas, southern Illinois, southern Indiana, Kentucky, and northern Tennessee on May 8, 2009.
