Illinois Weather Trivia for June 30th
- An overnight tornado in Madison County moved near North Alton, Bethalto, Collinsville, Bunker Hill, and Godfrey. Three hangars were destroyed at the Bethalto airport, with 48 aircraft damaged or destroyed, resulting in $1 million damage.
- Mississippi River levels rose dramatically during the last half of June 1993. On the Upper Mississippi River basin near the Quad Cities, river levels rose above major floods which occurred in 1965 and 1973. Near Grafton, Illinois, dozens of buildings were damaged during the month.
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