Sunday’s heavy rain showed upward of eight inches of rainfall in Berwyn, Cicero and Garfield Park, according to preliminary reports from weather officials.
The National Weather Service said that daily rainfall totals ranged from three to seven inches in the immediate Chicago area after “extended rounds of heavy/torrential rainfall.”
The preliminary data came from radar estimates, personal weather stations and rain gauges. Official information will be released over the next few days, weather officials said.
Flash flood warnings were in effect throughout Sunday and a flood warning remained in effect until 1 a.m. Monday.
The worst of the flooding occurred on the west and southwest sides of Chicago and in the near west and southwest suburbs, weather officials said.
Portions of I-290 and I-55 were flooded, some CTA services stopped and homes flooded across Chicago. The majority of 311 calls for flooding on Saturday afternoon were from Austin.
The severe weather over the weekend delayed the scheduled 4:05 p.m. start of the NASCAR Cup Series Grant Park 220, where puddles on the racetrack made for slippery conditions.
O’Hare International Airport broke the record for daily rainfall on Sunday, recording 3.35 inches of rain. The previous record was 2.06 inches in July 1982.
Hot and humid conditions are forecast for Monday and Tuesday, July 4. Weather officials said the next two days would stay mostly dry, with a chance of isolated showers on Tuesday afternoon.
Current conditions at O’Hare International Airport are sunny and 68 degrees.
vla@chicagotribune.com
