![]() ![]() ![]() Peak 3-hour rainfall amounts (with gauges overlaid)ġ8-hour rainfall annual exceedance probability (midnight - 7 PM July 2, 2023) Zoomed-in view of the bias-corrected rainfall estimates and gauge observations over Chicagoīias-corrected radar-estimated rainfall totals (midnight - 7 PM on Sunday, July 2, 2023) This was the highest daily rainfall total to be observed at Chicago-O'Hare Airport since May 2020, when O'Hare received 3.53" of rain on May 14 and 3.11" of rain on May 17.īias-corrected radar-estimated rainfall totals (midnight - 7 PM on Sunday, July 2, 2023) with rain gauges overlaid.Chicago-Midway Airport received 4.68" of rain. Chicago-O'Hare Airport received 3.35" of rain on July 2nd, which surpassed Chicago's previous daily record rainfall for this date of 2.06" set on July 2, 1982.The worst of the flooding occurred on the west and southwest sides of Chicago and in the near west and southwest suburbs, where numerous roads and homes flooded.Daily rainfall totals in and in the immediate vicinity of Chicago largely ranged from roughly 3 to 7 inches, though a few localized rain totals greater than 8 inches were seen on the far west side of Chicago and in Cicero, Berwyn, and Oak Park.This occurred after localized 1-2” rainfall amounts fell over parts of the Chicago metro and nearby areas during the afternoon and evening of July 1st.A slow-moving low pressure system that crawled across the Midwest combined with copious amounts of atmospheric moisture to result in multiple extended rounds of heavy/torrential rainfall in and near Chicago, leading to flash flooding. ![]()
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