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Rainfall Records Broken. One record that was not broken : Calendar day precipitation 21 July 1909 → 5.20". Comparison to 1972 Flash Flood. Comparison to 1972 Flash Flood. 8/20/1972. 9/20/1972. Historical Significance: 2012 Flood. Historical Significance: 2012 Flood.
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Rainfall Records Broken • One record that was not broken: • Calendar day precipitation • 21 July 1909 → 5.20"
Comparison to 1972 Flash Flood 8/20/1972 9/20/1972
Historical Rainfall in Duluth July 22, 1909 June 20, 2012 Aug 20 & Sept 20, 1972 July 4, 1897 Sept 5, 1990 May 5, 1912