Illinois State Water Survey Illinois State Climatologist

June 5 Tornado Outbreak in Illinois

SPC storm reports for June 5, 2010

A large tornado outbreak occurred in Illinois on June 5. The NOAA Storm Prediction Center has 31 preliminary damage reports for the state (see below). In some cases a single tornado generated multiple damage reports  as it moves cross-country. At this time there appears to have been 15 confirmed tornadoes involved. NWS offices conducted extensive […]

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Central IL tornado climatology updated

Tornado tracks, Champaign County, 1950-2009.

The NWS office in Lincoln, IL has updated their tornado climatology for central and southeastern Illinois for the period 1950-2009. During this period McLean County reported an incredible 100 tornadoes, the highest for any county in central Illinois. However, McLean County is the biggest county in this area (a bigger county means a bigger target). […]

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First Documented Radar Hook Echo

Radar hook echo

The Illinois State Water Survey is home to the first ever documented radar hook associated with an actual tornado. Water Survey staff captured the historic event on film on April 9, 1953. This was a major turning point in monitoring severe weather, demonstrating that tornadoes could be identified by radar. This discovery helped lead to […]

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