The following events were reported: Lightning, Thunderstorm Wind, Tornado. These occurred near station USW00094846, approximately 19.415 km away, between 2011-06-21 18:30:00 and 2011-06-21 20:17:00.The events resulted in 2 injuries and 0 fatalities. The events caused property damage valued at 2122100.0 and crop damage of 0.0. Episode Narrative: A powerful line of severe thunderstorms moved northeast across northern Illinois during the evening hours of June 21st producing damaging winds and widespread wind damage. A powerful line of severe thunderstorms moved northeast across northern Illinois during the evening hours of June 21st producing damaging winds and widespread wind damage. Event Narrative:   A 14 inch diameter tree was uprooted near the intersection of Fairview Avenue and Gierz Street. Emergency managers in DuPage County measured 62 mph wind gusts in Wheaton while a mesonet just north of Wheaton measured 59 mph wind gusts. Estimated gusts to 65 mph occurred one block south of Four Seasons Boulevard and Victoria Park Circle. Transformers exploded when an estimated 75 mph gust occurred near the intersection of Roosevelt Road and County Farm Road. Multiple whole trees were blown down northeast of Cumberland Parkway. A 35 foot by 40 foot section of an apartment building roof was blown off a multifamily residence on Josephine Street in Maine Township. Numerous trees, tree limbs and power lines were blown down. Approximately 300 trees were damaged in Lake Forest with 35 trees blown down or were damaged severely enough to be removed. Trees, tree limbs and power lines were blown down. Hundreds of trees were damaged in Villa Park. About 20 mature trees were removed due to severe damage. One tree fell onto a parked car on Keating Avenue. A tree limb was blown down onto power lines on South Rawson Bridge Road between Three Oaks and Crystal Lakes roads. Estimated wind gusts to 70 mph occurred in Schaumburg. Wind gusts were estimated to 65 mph. Wind gusts were estimated to 60 mph. Wind gusts were estimated to 60 mph approximately one mile north of Interstate 94 on Bradley Road. Wind gusts were estimated to 60 mph near the intersection of North Avenue and Ridgeland Avenue where multiple 30-foot long branches were blown down. Trees, tree limbs and power lines were blown down in many areas. Some trees fell onto houses and other buildings. Power outages lasted several days causing significant food spoilage. A tree was blown down on Gray Street. Tree limbs and power lines were also blown down in parts of Geneva. A roof was blown off a building on Waveland. Part of the roof was tangled in nearby power lines. A 100 foot tall maple tree was blown down onto a house causing signficant damage to the roof and attic. High winds blew over several bleachers, blew down a fence along with many downed trees in Redmond Park. Numerous trees and tree limbs were blown down in parts of Bensenville. Some of the trees fell onto cars. The top of a huge tree was snapped off and crashed through part of a bedroom of a house causing significant damage. A large section of a tree was blown down narrowly missing a house. A large tree was blown down near the Rosemont Fitness Center. Part of the tree damaged 8 feet of chain link fence. Other tree limbs were blown down. Tree limbs and power lines were blown down. Trees, tree limbs and power lines were blown down in many areas in Prospect Heights. A large tree was completely uprooted along the Willow Sloughs. The roof of an apartment building on Wolf Road was blown off. In Harwood Heights, every block had either broken trees or tree limbs. Some streets were completely blocked by fallen trees. A few cars were damaged by fallen trees. One car was damaged by a live powerline when it started a fire. Numerous other powerlines were blown down. Tree limbs, utility poles and power lines were blown down. A large tree limb fell on a parked car causing significant damage. Winds were estimated between 60 and 75 mph across portions of east-central DuPage County causing numerous branches to fall and power outages. A large tree fell onto Route 53 approximately one mile north of Roosevelt Road blocking the northbound lane in Lombard. A 14 inch diameter tree fell onto a car near the intersection of Fordham Way and Longford Drive in Westmont. Also in Westmont, a neighborhood near 55th Street and Clarendon Hills Road had numerous 10 inch diameter or greater tree limbs blown down. A garage was heavily damaged by a falling tree in Elmhurst and a large tree was snapped off at its base on Berteau in Elmhurst. Local media reported that two people were in serious to critical condition after their car was crushed by a falling tree near the intersection of Farragut Avenue and Leavitt Street. Several large trees were blown down near Dempster Street, approximately two blocks east of Interstate 94. One tree fell onto a car. Several 12 inch diameter trees were uprooted near the intersection of Laramie Avenue and Golf Road. Part of the roof of a building on Malmo Drive was ripped off. Numerous trees, tree limbs, utility poles and power lines were blown down. A transformer was completely blown off a utility pole. A large tree fell onto a house on Oakwood Street but only caused damage to the gutters. Damage was also reported to netting and fencing at a golf course. Hundreds of trees were damaged in and around the Buffalo Grove area. Utility poles and power lines were also blown down. Several tree limbs 6 to 14 inches in diameter were blown down near Milwaukee Avenue and Lake Cook Road. Tree limbs and power lines were blown down in Highland Park. A large tree was uprooted along Sheridan Road. When a back-up generator kicked on at a water plant, it created a pressure surge that blew a fist-sized hole in a water main. Over 100 trees were blown down or needed to be completely removed. Numerous grocery stores and restaurants had to rent refrigerated trucks or ship perishable items to warehouses due to extended power outages. Three cars were damaged by falling tree limbs including one on Neva Avenue, one on Touhy Avenue and a one on Oakton Street. Wind gusts were estimated to 70 mph. Numerous trees, tree limbs and power lines were blown down in Morton Grove. Numerous large trees, tree limbs and power lines were blown down. Several roads were blocked by the fallen trees. Numerous trees, tree limbs and power lines were blown. Some trees and limbs fell on cars causing damage. A 40 foot tall tree was completely uprooted on Kolmar Street and fell onto a house. Twelve inch diameter tree limbs were blown down near Skokie Village Hall. A house was struck by lightning on Carol Street causing extensive structural damage. Wind gusts to 81 mph were measured at Chicago Executive Airport. Roof damage was reported to three hangers. Four airplanes were damaged, with two of them flipped over. Approximately 1,000 feet of fencing was destroyed. A willow tree was uprooted on Wolf Road in Wheeling. A tornado touched down near the intersection of We Go Trail and Golf Road and moved north-northeast before lifting near the intersection of North Pine Street and Kensington Road. Most of the damage was fallen trees, a few of which fell onto houses causing structural damage. An estimated 2,000 trees were damaged in Mt. Prospect with 130 completely blown down or that needed to be removed. Most of the tree damage was in and near the path of the tornado. A National Weather Service storm survey confirmed an EF1 tornado touched down near Sunnydale Park and lifted near 55th and Main in Downers Grove. Most of the damage was to trees. Many mature hardwood trees had been snapped or knocked down. A fence was blown down at Downers Grove High School. An estimated 35 homes were damaged by falling trees. Wind gusts were estimated to 60 mph in Des Plaines with multiple large tree limbs blown down near the intersection of Golf Road and Wolf Road. Many trees fell onto houses and garages. The roof of an apartment building on Chestnut Street was blown off. Three medium sized trees were blown over.