The following events were reported: Flash Flood, Flood, Heavy Rain. These occurred near station USW00014819, approximately 25.1158 km away, between 2020-05-17 13:30:00 and 2020-05-19 03:00:00. The flood was caused by Heavy Rain. Thankfully, no injuries or fatalities were reported. No significant property or crop damage was reported. Episode Narrative: Heavy rain fell across many areas of northeast Illinois on May 17th producing widespread flooding which continued into May 18th. Two brief tornadoes also occurred during the afternoon of May 17th. Scattered showers produced a few funnel clouds on May 18th. Some of the highest 48 hour rainfall totals ending Monday morning May 18th included 8.61 inches in River Forest; 5.18 inches near Oak Forest; 4.75 inches near Burr Ridge; 4.70 inches three miles southwest of Midway Airport; 4.59 inches in Palos Heights; 4.14 inches in Burr Ridge; 3.99 inches in Joliet; 3.88 inches in Harwood Heights; 3.80 inches at the National Weather Service office in Romeoville; 3.73 inches in Algonquin; 3.60 inches near Manhattan; 3.59 inches in Minooka; 3.59 inches at Chicago O'Hare Airport (ORD) and 3.32 inches in Cary. Heavy rain fell across many areas of northeast Illinois on May 17th producing widespread flooding which continued into May 18th. Event Narrative: Route 6 was closed due to flooding at an underpass near Route 50. Flooding caused the closure of 107th Street near Route 45. Interstate 290 was flooded near Des Plaines Avenue. The CTA suspended Blue Line service between the Forest Park and Harlem stations due to flooding. Numerous roads were flooded including Smith Road at Foxford Drive, Smith Road near McCormick Way and Smith Road near Schoolhouse Road. Flooding was also reported along Manhattan-Monee Road. Prairie Creek flooded the intersection of Bruns Road and Kankakee Street. Main Street was closed due to flooding between 4th Street and Walker Road. Numerous roads were flooded in Plainfield with water several feet deep in some locations. Route 126 was closed west of Plainfield due to flooding. Flood waters 12 to 18 inches deep were reported on Caton Farm and Ridge Roads. Flooding was reported on Nelson Road at numerous locations. First Avenue was closed near Forest Avenue due to a flooded underpass. Around 40 people were evacuated by boat near Salt Creek in Lyons, where flood waters were chest deep in some areas and flooded some homes. Several inches of water was reported on Weber Road at 135th Street. Flood waters at least one foot deep were reported on residential streets in Clarendon Hills. Kedzie Avenue was closed due to flooding between 137th Street and 139th Street. Cal-Sag Road was closed due to flooding between Cicero Avenue and 135th Street. Flooding from Stony Creek inundated yards and approached structures near Ridgeland Avenue and 103rd Street. Flooding caused damage to Route 53 near Interstate 80 with chunks of pavement removed. Numerous cars were stalled in flood waters at 159th Street and Central Avenue. Rainfall of 1.80 inches was measured in one hour. Rainfall of 3.00 inches was measured in 2 hours. Some streets north of Pilcher Park were reported to be washed out with street and basement flooding. After heavy rain and flash flooding on May 17th, flooding continued on May 18th across many areas in DuPage County. After heavy rain and flash flooding on May 17th, flooding continued on May 18th across many areas in eastern Will County. After heavy rain and flash flooding on May 17th, flooding continued on May 18th across many areas in southern Cook County. Will-Cook Road was closed between 151st Street and 159th Street due to flooding. Residential structure flooding was reported along Kingbury Street due to flooding from the North Branch Chicago River. Flooding from the Chicago River also flooded all of Lower Wacker Drive which was closed. Several cars were stalled in the flood waters and six homeless people were rescued. Flooding from the Chicago River was reported to be the worst in nearly 60 years and flooded the basement lower levels of the Willis Tower. The water had to recede and it took several days to pump water from the lower levels. Power was lost which affected numerous TV and radio station broadcasts, including the NOAA Weather Radio Station which broadcasts from the Willis Tower. The flow of the Chicago River was reversed to avoid overbank flooding, which allowed storm water and sewage to flow directly into Lake Michigan. The Chicago Riverwalk was also flooded in several locations.