The following events were reported: Hail, Thunderstorm Wind, Tornado. These occurred near station USW00094846, approximately 24.4049 km away, between 2020-08-10 14:15:00 and 2020-08-10 15:04:00. The events included records with hailstones measuring 55.99684210526316 inches.Thankfully, no injuries or fatalities were reported. No significant property or crop damage was reported. Episode Narrative: During the late morning through the afternoon of Monday August 10th, a line of intense thunderstorms known as a derecho brought widespread severe wind damage across Iowa, northern Illinois and northern Indiana.||In north central and northeast Illinois alone, the severe winds of 60 to 100 mph downed or damaged tens of thousands of trees, as well as caused severe damage to homes, businesses, and infrastructure. There were 10 injuries reported in north central and northeast Illinois within the NWS Chicago/Romeoville County Warning Area (CWA). Local officials estimated that nearly one million customers lost power across northern Illinois at the height of the derecho and some people were without power for several days. Damage was estimated to be in the hundreds of millions of dollars in north central and northeast Illinois, with several billions of dollars in damages across the entire Corn Belt region including significant damage to crops and agriculture infrastructure. While much of the damage was due to straight line winds, there were also 14 tornadoes documented in north central and northeast Illinois.||The combination of high moisture, explosive instability and very strong atmospheric wind flow for mid-summer had developed quickly over the Corn Belt region on the morning of August 10th. This resulted in a progressive, well-organized complex of storms for hundreds of miles and at times traveling nearly 70 mph. After bringing extensive damage from extreme wind speeds in Iowa that morning, the damage transitioned across northern Illinois from widespread wind damage to narrow, brief and intense swaths associated with compact circulations within the thunderstorm line, some of which were associated with tornadoes. During the late morning through the afternoon of Monday August 10th, a line of intense thunderstorms known as a derecho brought widespread severe wind damage across Iowa, northern Illinois and northern Indiana.||In north central and northeast Illinois alone, the severe winds of 60 to 100 mph downed or damaged tens of thousands of trees, as well as caused severe damage to homes, businesses, and infrastructure. Event Narrative: A wind gust to 62 mph was measured at the DuPage Airport. A 14 inch diameter tree was split in half in St. Charles. Power lines were also blown down. Large tree limbs were blown down west of Roselle. A large sign for an auto dealer was blown down from south to north onto a car parked on Irving Park Road. An Oak tree was blown down blocking Fulton Street. Nickel to quarter size hail was reported in Oswego. Nickel size hail fell across Glencoe for 10 minutes. A tornado with peak winds of 110 mph touched down in the Lincolnwood neighborhood of Chicago near the intersection of Lunt and Hamlin Avenues. Tree damage occurred along most of the path of the tornado. At least two city blocks were impassable due to fallen trees. Numerous cars were totaled after trees fell on them. Utility poles were leaning along Touhy Avenue, just east of St. Louis Avenue. Significant tree damage including snapped trees, large trees uprooted and trees and tree limbs on vehicles, occurred between California Avenue and Rogers Phillip Park. The most intense damage occurred approximately one mile west of Lake Michigan where widespread tree damage occurred including large trees 1 to 2 feet in diameter snapped and uprooted. Minor roof damage also occurred in this area. The tornado continued east to the Lake Michigan shore where it became a waterspout as it moved east of Fargo Beach Park. Milwaukee Avenue was closed between Route 22 and Old Half Day Road due do a power line blown down. A corridor of significant wind damage occurred in Chicago, starting immediately east of Interstate 90/94 near Berteau and Kildare Avenues and continued northeast to near Montrose and Lawndale Avenues. Significant tree damage occurred in this corridor with many trees snapped or uprooted. Roof damage occurred to a few apartment buildings along Kedvale Avenue, just south of Cullom Avenue. One building suffered damage to a brick wall. Damage occurred to the top of a brick business at the southeast corner of Pulaski Road and Elston Avenue. Vehicles were damaged by the falling bricks. Several roofs sustained damage northeast of Elston Avenue, just south of Montrose Avenue and a window was blown out of a house. Two utility poles were damaged near Avers Avenue. Three buildings along Montrose Avenue suffered significant roof damage just east of Hamlin Avenue. Two buildings had west and south facing windows blown out near Montrose Avenue and Lawndale Avenue. The damage in this corridor indicates peak winds of 95 mph. Wind gusts were estimated between 60 mph and 70 mph in Schaumburg. Several whole trees were uprooted in Carpentersville along with numerous healthy 6 inch diameter tree limbs blown down. Fire crews responded to 14 reports of power lines blown down. One of these power lines started a fire in a detached garage on Golfview Lane. A tree fell onto a roof of a house on Wakefield Drive, leaving the house uninhabitable. A wind gust to 85 mph was measured. Numerous trees were snapped and uprooted in Evanston. Trees and power lines were blown down on Ela Road north of Lake Cook Road. A B-Class truck with a trailer was blown over at Irving Park Road and Schaumburg Road. Tree limbs and power lines were blown down in Elmhurst. Large tree limbs fell onto a small car near Catalpa Avenue and Spaulding Avenue, trapping the occupants in the car. Firefighters had to cut the tree limbs away before the people could exit the car. No injuries were reported. Tree limbs 8 to 10 inches in diameter were blown down near Sullivan Lake Boulevard and Game Trail. Some of the tree limbs were 20 feet in length. Siding was blown off of an apartment building. Damage to siding of a house was reported along with small tree limbs blown down nearby. Trees and power lines were blown down along Route 83 in Buffalo Grove. A garage collapsed near Roscoe Street and Nordica Avenue. An 8 inch diameter tree was snapped near Route 47 and Nottingham Drive. Trees and power lines were blown down along Route 83 in Grayslake. Trees and power lines were blown down on Cuba Road east of Route 14. A tornado with peak winds of 95 mph touched down near Main and Maple Streets, just east of Lilacia Park. The tornado moved northeast uprooting some trees and snapping other trees. More than 200 homes in Lombard suffered some amount of damage, a few suffered significant roof damage. The worst damage occurred near the Lombard Common just south of St. Charles Road. Tree damage continued along the path including part of a large tree blown down near Schafer Elementary School. A one foot diameter tree was blown down onto a house. Another house suffered minor roof and siding damage just north of the Jefferson Middle School and the tornado lifted northeast of the Jefferson Middle School. A tree was blown down near Nancy Lane and Powis Road. Quarter size hail was reported near Route 53 and Roosevelt Road. A wind gust was measured to 62 mph at Chicago O'Hare Airport. Tree limbs up to 6 inches in diameter were blown down all over Warrenville. A brief tornado with peak winds of 90 mph touched down near Seminary Avenue and Scott Street and moved northeast where it knocked a roughly 50 foot steeple around to the north side of the College Church of Wheaton. The tornado then produced minor tree damage before lifting near Collage Avenue and Howard Street. Trees, tree limbs and power lines were blown down in River Grove and Elmwood Park. Several cars and houses were damaged by fallen trees. Several roads were blocked by the fallen trees. A wind gust was measured to 62 mph at the Aurora Municipal Airport. A large tree limb was blown down blocking Ellsworth Street. A wind gust to 60 mph was measured at the DuPage Airport. Multiple trees and power lines were blown down throughout Batavia. A large tree was snapped blocking Eastwood Avenue. Other large tree limbs were blown down nearby. A light pole was blown down along southbound River Road near Interstate 190. A corridor of enhanced straight line winds developed near President Street in northeast Wheaton and continued across northern Glenn Ellyn, ending northeast of Lake Ellyn. Trees and utility poles were damaged along this corridor with the peak of the damage occurring east of Main Street and towards Lake Ellyn Park. Damage was consistent with wind speeds up to 90 mph. Trees, tree limbs and power lines were blown down in Aurora. Several roads were blocked by fallen trees. Multiple trees were damaged in River Forest. A couple of tree limbs fell onto vehicles.