The following events were reported: Flood, Thunderstorm Wind, Tornado. These occurred near station USW00014819, approximately 20.9435 km away, between 2021-06-20 22:02:00 and 2021-06-21 01:30:00. The flood was caused by Heavy Rain. The events resulted in 11 injuries and 0 fatalities. No significant property or crop damage was reported. Episode Narrative: A line of severe thunderstorms moved across northern Illinois during the late evening of June 20th and the early morning of June 21st producing wind damage and three tornadoes. A line of severe thunderstorms moved across northern Illinois during the late evening of June 20th and the early morning of June 21st producing wind damage and three tornadoes. Event Narrative: Several trees were blown down in Westmont. Tree damage was reported. Flooding blocked two lanes of Interstate 55 near Pulaski Avenue. Tree damage was reported in Bolingbrook. Sporadic minor tree damage consistent with straight line winds occurred in the vicinity of Meadow Lane between 143rd Street and Lockport Street, east to Route 59. A tornado with peak winds of 85 mph touched down near the intersection of Route 59 and Route 126, just north of downtown Plainfield. Numerous large tree limbs and a few trees were blown down in a neighborhood south of Route 126 and north of Lockport Street. A tree limb was impaled into a home on Hawthorn Circle. Minor tree damage occurred in the Lake Renwick Preserve. The tornado crossed Interstate 55 with a path of sporadic tree damage in the Fieldstone neighborhood of Romeoville near Helen Drive. Tree damage occurred in the Mistwood Golf Club including tree limbs removed from the top of trees. A narrow path of concentrated tree damage occurred near Rosemarie Lane. The tornado lifted in the vicinity of Thomas Drive just east of Weber Road. A tornado which touched down in Naperville and moved across far southern DuPage County crossed into Cook County near 83rd Street. The tornado produced only tree damage along its path in Cook County and the tornado ended near the Buffalo Woods just east of Forest Avenue. Numerous tree limbs were blown down. A tree limb broke a window. Some trees were snapped near the top. Trees and power lines were blown down. A tornado with peak winds of 140 mph touched down just south of 75th Street, west of Book Road in the western portion of the Springbrook Prairie Forest Preserve. The near continuous damage path started near Plainfield-Naperville Road and Sheppey Court where considerable tree damage occurred. Significant tree damage began just east of Modaff Road with trees snapped and others uprooted along Quall Drive. Significant tree damage occurred near Verdin Lane with trees uprooted, trunks snapped and large tree limbs broken and tossed into homes. Damage to homes in this area appeared to be primarily due to falling trees. Tree damage continued through Killdeer Drive and along Bailey Road. Damage to roofs occurred to some homes in this area. Several utility poles were blown down on Bailey Road, between Lighthouse Drive and Coach Drive. Windows were broken and debris was embedded in stucco on a southside wall of an apartment building on the southeast corner of Bailey Road and Coach Drive. The tornado gradually intensified east of Naper Boulevard. Large trees were snapped just east of Naper Boulevard along Bailey Road. One fell onto a home causing roof damage. Naperville Fire Station #2 was damaged.||The tornado jogged to the northeast and began to increase in width with tree damage continuing through Fender Road, where roof and wall damage occurred to a home from a falling tree. Tree damage continued through Clemson Drive and Wehrli Road. Widespread tree damage occurred near 77th Street where one car was flipped over and a second car was damaged by debris. Roof and siding damage occurred to homes and a garage wall was removed. A garage door was blown in and a wall was destroyed on Siebert Court. The tornado destroyed a home on Princeton Circle. The house completely collapsed with debris deposited to the northeast, though homes on either side remained standing with only minor damage. It is at this location that the tornado reached peak intensity of EF3. In the same block, considerable damage occurred to roofs of several nearby homes. Damage to homes continued along Nutmeg Lane to Shady Grove Court, including the removal of walls on the second floor of at least one home and roofing damage to several others. The tornado increased in width as it moved between 75th and 79th Streets, destroying garages and lifting roofing of an apartment complex along Gladstone Drive. Considerable tree damage also occurred in the Green Valley Forest Preserve as the tornado crossed Greene Road.||The tornado continued east across Route 53 with tree and roof damage noted. More significant damage began again near Woodridge Drive. Several homes were damaged with large trees uprooted or snapped. Multiple fences were also blown down. Damage to homes continued near Evergreen Lane and James Court where several homes suffered significant roof and second story damage. The tornado crossed Interstate 355 where a large portion of a traffic sign on southbound Interstate 355 was ripped off two steel posts. The missing section of the traffic sign was found in a pond in the Lake Ridge Club, between 79th Street and 81st Street, east of Madison Street in Burr Ridge, nearly 6 miles from its original location.||Significant damage occurred to homes and apartment buildings east of Interstate 355 between Country Club Drive and Egerton Drive. Some roofs were completely removed. Tree and roof damage continued along Pine Drive and Britten Street. The tornado began to increase in width again as it crossed Lemont Road where a warehouse building was damaged. Tree and roof damage continued through Highland Avenue, Plainfield Road, Bailey Road and Cass Avenue. At least one apartment building suffered significant roof damage along Lakeview Drive. East of Cass Avenue, the tornado produced mainly tree damage, crossing Interstate 55, then Route 83 and then moving east along 83rd Street. Damage occurred to several dozen homes in Burr Ridge. The tornado crossed into Cook County near 83rd Street.||In Naperville, 231 structures reported some level of damage. One home was completely destroyed, 19 were declared uninhabitable and 143 sustained major damage. In Woodridge, 640 structures were damaged, including 31 homes that were uninhabitable and 157 that sustained major damage. In Darrien, 2 homes were damaged and 1 was uninhabitable. In Burr Ridge, 50 homes were damaged. A total of 11 people were injured, including a woman who was 6 months pregnant and was critically injured. She lost her unborn baby as the result of her injuries.