On the morning of July 11th, a derecho swept across northern Illinois leaving a wide swath of damage from severe winds.  Comed, a utility company providing service to much of northern and northeast Illinois, deployed more resources after this storm than at any time in its history.  Over 1,100 crews from 14 states repaired or replaced 77.8 miles of wire, 600 poles and 1,000 transformers.

Thunderstorm Wind in COOK, ILLINOIS
From 11-JUL-11 07:20:00 to 11-JUL-11 07:20:00 (CST-6)
Location: BRIGHTON PARK
Magnitude: 55.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Newspaper

A 72 year old man was driving on the 3000 block of West Ogden Avenue when a tree limb fell through the sunroof of his car striking the man.  The man died in the hospital during the afternoon of July 12th.

Thunderstorm Wind in COOK, ILLINOIS
From 11-JUL-11 07:21:00 to 11-JUL-11 07:22:00 (CST-6)
Location: BEVERLY HILLS
Magnitude: 60.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Newspaper

A mature tree was blown over, crushing the front end of a car on the 9900 block of South Bell Avenue.  Another tree fell onto a roof of a home on the 10600 block of South Hoyne Avenue.  This tree damaged the roof of the home, a fence, a porch railing, and a concrete slab.

Thunderstorm Wind in BOONE, ILLINOIS
From 11-JUL-11 06:15:00 to 11-JUL-11 06:15:00 (CST-6)
Location: GARDEN PRAIRIE
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Power lines were blown down and were blocking eastbound lanes of Interstate 90 near Boone McHenry County Line Road.

Thunderstorm Wind in COOK, ILLINOIS
From 11-JUL-11 07:14:00 to 11-JUL-11 07:14:00 (CST-6)
Location: LAMBERT
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A festival tent at 109th Street and 88th Avenue near Moraine Valley Community College was lifted and then dropped onto six workers causing minor injuries.

Thunderstorm Wind in COOK, ILLINOIS
From 11-JUL-11 07:15:00 to 11-JUL-11 07:15:00 (CST-6)
Location: PALATINE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tree branches up to 8 inches in diameter were blown down.

Thunderstorm Wind in COOK, ILLINOIS
From 11-JUL-11 07:15:00 to 11-JUL-11 07:15:00 (CST-6)
Location: ARLINGTON HGTS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A 12-inch diameter tree was blown down.  Winds were estimated to 60 mph.

Thunderstorm Wind in COOK, ILLINOIS
From 11-JUL-11 07:19:00 to 11-JUL-11 07:21:00 (CST-6)
Location: ASHBURN
Magnitude: 63.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winds were measured to 72 mph in Evergreen Park.  At the intersection of 88th Street and Utica Avenue, a 12-inch diameter tree was snapped at the base.

Thunderstorm Wind in LAKE, ILLINOIS
From 11-JUL-11 07:02:00 to 11-JUL-11 07:02:00 (CST-6)
Location: RONDOUT
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A semi-truck was blown over on Interstate 94 near Route 176.

Thunderstorm Wind in LEE, ILLINOIS
From 11-JUL-11 06:15:00 to 11-JUL-11 06:15:00 (CST-6)
Location: WEST BROOKLYN
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Route 251 was blocked by downed power lines near Spur Road.

Thunderstorm Wind in WINNEBAGO, ILLINOIS
From 11-JUL-11 06:15:00 to 11-JUL-11 06:15:00 (CST-6)
Location: ROCKFORD
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winds gusting 70 to 80 mph damaged power transformers and blew over a semi-truck.

Thunderstorm Wind in BOONE, ILLINOIS
From 11-JUL-11 06:17:00 to 11-JUL-11 06:20:00 (CST-6)
Location: POPLAR GROVE
Magnitude: 75.00 EG
Property damage: 45.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Over 30 large trees were reported down in the Poplar Grove and Candlewick Lake area, including one tree that fell onto a house on Bounty Drive in Candlewick Lake and a tree that fell onto a car in Poplar Grove.  Also in Poplar Grove, a roof was blown off of a house and a garage was destroyed.

Thunderstorm Wind in DE KALB, ILLINOIS
From 11-JUL-11 06:20:00 to 11-JUL-11 06:20:00 (CST-6)
Location: DE KALB
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees were snapped at the base just south of Route 38 on Annie Glidden Road.  Corn was flattened in areas surrounding De Kalb.

Thunderstorm Wind in COOK, ILLINOIS
From 11-JUL-11 07:13:00 to 11-JUL-11 07:13:00 (CST-6)
Location: LYONS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Winds were estimated to 60 mph causing some tree damage.

Thunderstorm Wind in COOK, ILLINOIS
From 11-JUL-11 07:10:00 to 11-JUL-11 07:10:00 (CST-6)
Location: EVANSTON
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Numerous large tree limbs were blown down onto streets.

Thunderstorm Wind in LEE, ILLINOIS
From 11-JUL-11 06:10:00 to 11-JUL-11 06:10:00 (CST-6)
Location: AMBOY
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Portions of a corn field were flattened near Amboy.

Thunderstorm Wind in MCHENRY, ILLINOIS
From 11-JUL-11 06:30:00 to 11-JUL-11 06:30:00 (CST-6)
Location: HARVARD
Magnitude: 52.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous 12-inch diameter trees and power lines were blown down.  Some trees were snapped.  One tree fall onto a house.

Thunderstorm Wind in BOONE, ILLINOIS
From 11-JUL-11 06:30:00 to 11-JUL-11 06:30:00 (CST-6)
Location: POPLAR GROVE
Magnitude: 60.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A roof was blown off of a house and a garage was destroyed.

Thunderstorm Wind in WINNEBAGO, ILLINOIS
From 11-JUL-11 05:55:00 to 11-JUL-11 05:55:00 (CST-6)
Location: PECATONICA
Magnitude: 65.00 EG
Property damage: 0.00K
Reported by: Newspaper

Corn fields were flattened near the intersection of Route 20 and Conger Road.

Thunderstorm Wind in BOONE, ILLINOIS
From 11-JUL-11 06:15:00 to 11-JUL-11 06:15:00 (CST-6)
Location: BELVIDERE
Magnitude: 60.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Newspaper

Numerous trees fell across Belvidere causing damage to powerlines and roofs.  One tree fell against a house on Garden Drive while another fell onto a roof on East Lincoln Avenue.

Thunderstorm Wind in KENDALL, ILLINOIS
From 11-JUL-11 06:40:00 to 11-JUL-11 06:40:00 (CST-6)
Location: SANDWICH
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Numerous tree limbs, some around 6 inches in diameter, were blown down causing damage to powerlines.

Thunderstorm Wind in KANE, ILLINOIS
From 11-JUL-11 06:33:00 to 11-JUL-11 06:33:00 (CST-6)
Location: ELBURN
Magnitude: 60.00 EG
Property damage: 0.00K
Reported by: Newspaper

Patches of a corn field were flattened on the intersection of Keslinger Road and Dauberman Road.

Thunderstorm Wind in COOK, ILLINOIS
From 11-JUL-11 07:07:00 to 11-JUL-11 07:07:00 (CST-6)
Location: THE GREENS
Magnitude: 65.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Newspaper

The roofs of two buildings on the 9600 block of Lois Drive were ripped off by strong winds.

Thunderstorm Wind in COOK, ILLINOIS
From 11-JUL-11 07:07:00 to 11-JUL-11 07:07:00 (CST-6)
Location: WILMETTE
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

A 74-inch diameter tree known as the Bicentennial Ash was blown down in Gillson Park.

Thunderstorm Wind in COOK, ILLINOIS
From 11-JUL-11 07:08:00 to 11-JUL-11 07:08:00 (CST-6)
Location: HARWOOD HGTS
Magnitude: 55.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Newspaper

A tree approximately two feet in diameter fell onto a moving vehicle causing heavy damage to the car.  The incident occurred near the 4900 block of North Austin Avenue.  No injuries were reported.

Thunderstorm Wind in COOK, ILLINOIS
From 11-JUL-11 06:57:00 to 11-JUL-11 06:57:00 (CST-6)
Location: ARLINGTON HGTS
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

A tree approximately two feet in diameter was snapped at the base and fell onto the roadway blocking traffic near the intersection of Princeton Avenue and Grove Street.

Lightning in COOK, ILLINOIS
From 11-JUL-11 08:10:00 to 11-JUL-11 08:10:00 (CST-6)
Location: HANSON PARK
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Newspaper

Lightning struck a large tree which then fell onto a storage building, shifting the roof and making it unsafe to enter.

Thunderstorm Wind in COOK, ILLINOIS
From 11-JUL-11 07:15:00 to 11-JUL-11 07:15:00 (CST-6)
Location: BRIGHTON PARK
Magnitude: 55.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Newspaper

A large tree limb smashed a car causing heavy damage to the rear of the car on the 3600 block of Rockwell Avenue.

Thunderstorm Wind in DE KALB, ILLINOIS
From 11-JUL-11 06:30:00 to 11-JUL-11 06:30:00 (CST-6)
Location: SYCAMORE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winds were estimated to 60 mph.

Thunderstorm Wind in MCHENRY, ILLINOIS
From 11-JUL-11 06:35:00 to 11-JUL-11 06:35:00 (CST-6)
Location: HUNTLEY
Magnitude: 65.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Public

In the Meadowbrook neighborhood, there were numerous houses with the siding ripped off.  Multiple trees were uprooted or snapped at the base.  One house on Waterford Lake had the chimney blown off.

Thunderstorm Wind in KANE, ILLINOIS
From 11-JUL-11 06:35:00 to 11-JUL-11 06:35:00 (CST-6)
Location: LA FOX
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winds to 65 mph were measured with an anemometer.  A tree was blown down on Beith Road.

Thunderstorm Wind in MCHENRY, ILLINOIS
From 11-JUL-11 06:40:00 to 11-JUL-11 06:42:00 (CST-6)
Location: CRYSTAL LAKE
Magnitude: 65.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winds estimated to more than 70 mph lasted for two to three minutes causing 1-foot diameter trees and large branches to blow over as well as power outages.  Large limbs fell through the windshield of a car at an intersection on Dole Avenue.

Thunderstorm Wind in KANE, ILLINOIS
From 11-JUL-11 06:50:00 to 11-JUL-11 06:50:00 (CST-6)
Location: SUGAR GROVE
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in LAKE, ILLINOIS
From 11-JUL-11 06:50:00 to 11-JUL-11 06:50:00 (CST-6)
Location: FOX LAKE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous tree limbs of up to 8 inches in diameter were blown down.

Thunderstorm Wind in COOK, ILLINOIS
From 11-JUL-11 06:50:00 to 11-JUL-11 06:50:00 (CST-6)
Location: HOFFMAN ESTATES
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated to 60 mph causing intermittent power failures.

Thunderstorm Wind in COOK, ILLINOIS
From 11-JUL-11 07:10:00 to 11-JUL-11 07:10:00 (CST-6)
Location: WESTERN SPGS
Magnitude: 65.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Newspaper

Strong winds ripped a couple roofs off of buildings in the industrial area of Bedford Park.  A parapet wall on another building was heavily damaged with bricks falling onto the sidewalk below.  Three cars were damaged by falling trees and limbs.

Thunderstorm Wind in MCHENRY, ILLINOIS
From 11-JUL-11 06:35:00 to 11-JUL-11 06:35:00 (CST-6)
Location: WONDER LAKE
Magnitude: 60.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Newspaper

A large limb was dislogded from a tree and broke through the siding of a house going into the master bedroom.  No one was injured.

Thunderstorm Wind in LAKE, ILLINOIS
From 11-JUL-11 06:54:00 to 11-JUL-11 06:54:00 (CST-6)
Location: MUNDELEIN
Magnitude: 63.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tree limbs of up to 4 inches in diameter were blown down.  Some large trees were snapped, blocking roads.

Lightning in MCHENRY, ILLINOIS
From 11-JUL-11 07:00:00 to 11-JUL-11 07:00:00 (CST-6)
Location: RICHMOND
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Newspaper

Lightning struck a village pump house on Valley Drive melting wiring and destroying the water pump.

Thunderstorm Wind in LAKE, ILLINOIS
From 11-JUL-11 06:55:00 to 11-JUL-11 06:55:00 (CST-6)
Location: BENET LAKE
Magnitude: 55.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Newspaper

A large tree, greater than two feet in diameter, was uprooted and fell onto the roof of a house near the intersection of Gary's Drive and North Avenue.

Thunderstorm Wind in LAKE, ILLINOIS
From 11-JUL-11 06:57:00 to 11-JUL-11 06:57:00 (CST-6)
Location: LINCOLNSHIRE
Magnitude: 60.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Newspaper

A few roofs were blown off of buildings in the Lincolnshire-Riverwoods district.

Thunderstorm Wind in LAKE, ILLINOIS
From 11-JUL-11 06:52:00 to 11-JUL-11 06:52:00 (CST-6)
Location: LIBERTYVILLE
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A portion of a roof was peeled off by strong winds on Church Street.

Thunderstorm Wind in KENDALL, ILLINOIS
From 11-JUL-11 06:54:00 to 11-JUL-11 06:54:00 (CST-6)
Location: OSWEGO
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in WINNEBAGO, ILLINOIS
From 11-JUL-11 06:00:00 to 11-JUL-11 06:03:00 (CST-6)
Location: NORTH PARK
Magnitude: 61.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A semi-truck was overturned in Loves Park on Perryville Road between Harlem Road and Mulford Road.  State Street was closed from 9th Street to Division after a large tree was blown down taking down power lines.  Rockford Park District reported that 25 parks and facilities sustained some type of storm damage, mostly from fallen trees.

Thunderstorm Wind in WINNEBAGO, ILLINOIS
From 11-JUL-11 06:05:00 to 11-JUL-11 06:05:00 (CST-6)
Location: HARLEM
Magnitude: 60.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Newspaper

High winds blew down several power lines along Alpine Road just north of East Riverside Boulevard.

Thunderstorm Wind in DE KALB, ILLINOIS
From 11-JUL-11 06:28:00 to 11-JUL-11 06:28:00 (CST-6)
Location: WATERMAN
Magnitude: 61.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winds estimated to 70 mph caused several trees to snap.  One large oak tree fell onto a house and car, but damage to property was minimal.  The press box at DeKalb High School was blown over.  The building was secured by pilings set in concrete, which were pulled out of the ground.  Power lines were downed near Normal Road and 10th Street.  A tree limb fell onto a home and damaged the gas meter.  Portions of a corn field were flattened in Waterman.

Thunderstorm Wind in KANE, ILLINOIS
From 11-JUL-11 06:45:00 to 11-JUL-11 06:45:00 (CST-6)
Location: WEST DUNDEE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Large tree limbs were blown down.

Thunderstorm Wind in DU PAGE, ILLINOIS
From 11-JUL-11 06:55:00 to 11-JUL-11 06:55:00 (CST-6)
Location: NAPERVILLE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous large trees and tree limbs were blown over.  A traffic light on Naperville Road was blown down.

Thunderstorm Wind in COOK, ILLINOIS
From 11-JUL-11 06:56:00 to 11-JUL-11 06:56:00 (CST-6)
Location: PROSPECT HGTS
Magnitude: 55.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A 12-inch tree fell on a house near the intersection of Windsory Drive and Palatine Road.  An 18-inch tree was also uprooted nearby.

Thunderstorm Wind in DU PAGE, ILLINOIS
From 11-JUL-11 06:58:00 to 11-JUL-11 06:58:00 (CST-6)
Location: WINFIELD
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winds were estimated to 60 mph.

Thunderstorm Wind in MCHENRY, ILLINOIS
From 11-JUL-11 06:40:00 to 11-JUL-11 06:40:00 (CST-6)
Location: MC HENRY
Magnitude: 60.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Newspaper

Downed trees caused damage to fences in some parts of McHenry.  A Chevrolet Traverse had its windshield smashed.

Lightning in MCHENRY, ILLINOIS
From 11-JUL-11 06:40:00 to 11-JUL-11 06:40:00 (CST-6)
Location: RINGWOOD
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Newspaper

Lightning struck a 40-foot oak tree which then fell onto a car, blowing out the rear window and heavily damaging the trunk and vinyl roof of the convertible.  The tree also caused some damage to the roof and gutter of a garage.

Thunderstorm Wind in KANE, ILLINOIS
From 11-JUL-11 06:45:00 to 11-JUL-11 06:45:00 (CST-6)
Location: MOOSEHEART
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Deerpath Road just west of Batavia was closed due to several power poles hanging over roadways.  An power pole on North Kirk Road was also leaning over the roadway.

Thunderstorm Wind in DU PAGE, ILLINOIS
From 11-JUL-11 06:50:00 to 11-JUL-11 06:50:00 (CST-6)
Location: WARRENVILLE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated between 60 and 70 mph.

Thunderstorm Wind in COOK, ILLINOIS
From 11-JUL-11 06:50:00 to 11-JUL-11 06:51:00 (CST-6)
Location: ARLINGTON HGTS
Magnitude: 61.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Fences were blown down and an 8-inch diameter tree was snapped near Hintz Road and Windsor Drive.  At Arlington Park Race Track, 4 to 6 inch diameter branches were blown down.  Numerous trees and power lines were also down across the area.  There was a report of a window blown out of a house.

Lightning in MCHENRY, ILLINOIS
From 11-JUL-11 06:56:00 to 11-JUL-11 06:56:00 (CST-6)
Location: RICHMOND
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Newspaper

A lightning strike ignited a fire in the steeple of a former church on Hill Road.  There was slight damage to the roof and some water damage.

Thunderstorm Wind in COOK, ILLINOIS
From 11-JUL-11 07:00:00 to 11-JUL-11 07:00:00 (CST-6)
Location: PROSPECT HGTS
Magnitude: 55.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Newspaper

Large branches fell onto a parked car in northwest Prospect Heights causing moderate damage including a shattered back window.

Thunderstorm Wind in LAKE, ILLINOIS
From 11-JUL-11 07:01:00 to 11-JUL-11 07:01:00 (CST-6)
Location: GURNEE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A 15-inch diameter tree was uprooted by winds estimated to 70 mph.

Thunderstorm Wind in WILL, ILLINOIS
From 11-JUL-11 07:09:00 to 11-JUL-11 07:09:00 (CST-6)
Location: CREST HILL
Magnitude: 52.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Trained Spotter

Shed walls were blown in and several large branches were blown down.

Thunderstorm Wind in COOK, ILLINOIS
From 11-JUL-11 07:06:00 to 11-JUL-11 07:06:00 (CST-6)
Location: SKOKIE
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A 24-inch diameter tree was blown down at the intersection of Oakton Street and Wesley Avenue.  Other trees were blown down in the area.

Thunderstorm Wind in LAKE, ILLINOIS
From 11-JUL-11 07:00:00 to 11-JUL-11 07:01:00 (CST-6)
Location: LIBERTYVILLE
Magnitude: 61.00 MG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Telephone lines were blown down along with large trees in Prairie View.  A roof was blown off.

Thunderstorm Wind in COOK, ILLINOIS
From 11-JUL-11 07:03:00 to 11-JUL-11 07:03:00 (CST-6)
Location: RIVER FOREST
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A one-foot diameter branch was blown down with numerous smaller branches on Harvard Street between Clarence Avenue and East Avenue.

Thunderstorm Wind in COOK, ILLINOIS
From 11-JUL-11 07:06:00 to 11-JUL-11 07:06:00 (CST-6)
Location: SUMMIT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tree limbs 5 to 6 inches in diameter were blown down along 62nd Street.  A 20-inch diameter tree was split vertically down the middle.

Thunderstorm Wind in DU PAGE, ILLINOIS
From 11-JUL-11 07:02:00 to 11-JUL-11 07:05:00 (CST-6)
Location: DOWNERS GROVE
Magnitude: 60.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Numerous tree branches 18 to 24 inches in diameter were blown down.  Power lines were blown down.  The road was blocked on 63rd Street between Fairview Avenue and Belmont Road.

Thunderstorm Wind in COOK, ILLINOIS
From 11-JUL-11 07:05:00 to 11-JUL-11 07:05:00 (CST-6)
Location: FOREST GLEN
Magnitude: 55.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Newspaper

Downed power lines sparked a fire that spread to four cars.  Two of the cars were totaled, with the interiors completely burned.

Thunderstorm Wind in DU PAGE, ILLINOIS
From 11-JUL-11 07:02:00 to 11-JUL-11 07:02:00 (CST-6)
Location: LISLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Large tree branches were blown down.

Thunderstorm Wind in LAKE, ILLINOIS
From 11-JUL-11 07:06:00 to 11-JUL-11 07:06:00 (CST-6)
Location: LONG GROVE
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees two feet in diameter were snapped and utility poles were blown down near the intersection of Checker Road and Schaeffer Road.

Thunderstorm Wind in COOK, ILLINOIS
From 11-JUL-11 07:07:00 to 11-JUL-11 07:07:00 (CST-6)
Location: EVANSTON
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Wind gusts estimated to 65 mph blew down at least six large trees in Loyola Park near the lakefront.  Diameters were estimated between 18 and 24 inches.

Thunderstorm Wind in WILL, ILLINOIS
From 11-JUL-11 07:09:00 to 11-JUL-11 07:09:00 (CST-6)
Location: PLAINFIELD
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winds were estimated to 65 mph near the intersection of Route 59 and Caton Farm Road.

Thunderstorm Wind in COOK, ILLINOIS
From 11-JUL-11 07:10:00 to 11-JUL-11 07:10:00 (CST-6)
Location: MELROSE PARK
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated to 60 mph.

Thunderstorm Wind in COOK, ILLINOIS
From 11-JUL-11 07:05:00 to 11-JUL-11 07:05:00 (CST-6)
Location: FRANKLIN PARK
Magnitude: 55.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Newspaper

A large tree limb fell onto a roof on the 8600 block of Center Street damaging portions of the roof and awning.

Thunderstorm Wind in LAKE, ILLINOIS
From 11-JUL-11 07:07:00 to 11-JUL-11 07:07:00 (CST-6)
Location: LINDENHURST
Magnitude: 55.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Utility poles were snapped by strong winds.

Thunderstorm Wind in LAKE, ILLINOIS
From 11-JUL-11 07:13:00 to 11-JUL-11 07:13:00 (CST-6)
Location: FREMONT CENTER
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees eight inches in diameter were snapped near the intersection of Route 60 and Peterson Road.

Thunderstorm Wind in DU PAGE, ILLINOIS
From 11-JUL-11 07:17:00 to 11-JUL-11 07:17:00 (CST-6)
Location: DARIEN
Magnitude: 65.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A 12 to 15 inch diameter tree was blown down.  The roof of a 32-unit apartment building was torn off.

Thunderstorm Wind in LAKE, ILLINOIS
From 11-JUL-11 07:11:00 to 11-JUL-11 07:11:00 (CST-6)
Location: LAKE ZURICH
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tree branches 6 to 8 inches in diameter were blown down near the intersection of Miller Road and Route 12.

Thunderstorm Wind in COOK, ILLINOIS
From 11-JUL-11 07:12:00 to 11-JUL-11 07:12:00 (CST-6)
Location: CLYBOURN
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A large tree, approximately 18 inches in diameter, was blown down near the intersection of Goethe Street and LaSalle Street.

Thunderstorm Wind in COOK, ILLINOIS
From 11-JUL-11 07:12:00 to 11-JUL-11 07:15:00 (CST-6)
Location: ARGO
Magnitude: 65.00 MG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: ASOS

Winds were measured to 75 mph at Midway Airport as well as an observer approximately 3 miles southwest of Midway Airport.  A semi was overturned near the intersection of 65th Street and Menard Avenue.  Fences and 10-inch diameter branches were blown down.  Large trees were reported down near Midway Airport.  Sheet metal and shingles were torn off roofs.  Power lines and poles were blown down, including one pole that fell onto a house in Burbank.  Winds were estimated to 65 mph in Hometown.

Thunderstorm Wind in COOK, ILLINOIS
From 11-JUL-11 07:12:00 to 11-JUL-11 07:12:00 (CST-6)
Location: CLYBOURN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A 12-inch diameter tree limb was blown down at the intersection of Dayton Street and Willow Street.

Thunderstorm Wind in LAKE, ILLINOIS
From 11-JUL-11 07:13:00 to 11-JUL-11 07:13:00 (CST-6)
Location: GURNEE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Large branches were blown off trees.  Winds were estimated to 60 mph.

Thunderstorm Wind in LEE, ILLINOIS
From 11-JUL-11 05:45:00 to 11-JUL-11 05:45:00 (CST-6)
Location: NELSON
Magnitude: 65.00 EG
Property damage: 0.00K
Reported by: Emergency Manager

Portions of a corn field were flattened near Harmon Road and Rock Island Road.

Thunderstorm Wind in WINNEBAGO, ILLINOIS
From 11-JUL-11 05:57:00 to 11-JUL-11 06:00:00 (CST-6)
Location: WEST END
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Winds were estimated to 60 mph outside of WREX television studio.

Thunderstorm Wind in LEE, ILLINOIS
From 11-JUL-11 06:09:00 to 11-JUL-11 06:09:00 (CST-6)
Location: FRANKLIN GROVE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winds estimated to 70 mph blew down 12-inch diameter trees, including one that fell onto the roadway blocking Spring Street.

Thunderstorm Wind in OGLE, ILLINOIS
From 11-JUL-11 06:14:00 to 11-JUL-11 06:15:00 (CST-6)
Location: CRESTON
Magnitude: 65.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

In the town of Creston, two large trees were blown down and three telephone poles were leaning.  Corn in the area was flattened.  A metal barn was blown over halfway between Malta and Creston on the north side of Route 38.

Thunderstorm Wind in OGLE, ILLINOIS
From 11-JUL-11 05:42:00 to 11-JUL-11 05:42:00 (CST-6)
Location: POLO
Magnitude: 65.00 EG
Property damage: 0.00K
Reported by: Law Enforcement

Corn fields were flattened, and 6-inch diameter branches were blown down along with power lines.

Thunderstorm Wind in COOK, ILLINOIS
From 11-JUL-11 07:04:00 to 11-JUL-11 07:04:00 (CST-6)
Location: (ORD)O'HARE INTL ARP
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in LAKE, ILLINOIS
From 11-JUL-11 07:10:00 to 11-JUL-11 07:10:00 (CST-6)
Location: WADSWORTH
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tree branches 4 to 6 inches in diameter and 15 feet long were blown down near the intersection of Wadsworth Road and Delaney Road.

Lightning in DU PAGE, ILLINOIS
From 11-JUL-11 07:05:00 to 11-JUL-11 07:05:00 (CST-6)
Location: BOLINGBROOK
Property damage: 40.00K
Crop damage: 0.00K
Reported by: Newspaper

A lightning strike caused a fire on the 1100 block of Bards Avenue.

Thunderstorm Wind in COOK, ILLINOIS
From 11-JUL-11 07:09:00 to 11-JUL-11 07:09:00 (CST-6)
Location: BROOKFIELD
Magnitude: 55.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Newspaper

A large tree limb, estimated at more than a foot in diameter, fell onto a roof on the 8800 block of Burlington Avenue.

Thunderstorm Wind in KANE, ILLINOIS
From 11-JUL-11 06:35:00 to 11-JUL-11 06:35:00 (CST-6)
Location: SUGAR GROVE
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in DU PAGE, ILLINOIS
From 11-JUL-11 06:47:00 to 11-JUL-11 06:47:00 (CST-6)
Location: CAROL STREAM
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Winds were estimated to 60 mph and caused damage to power transformers.

Thunderstorm Wind in DU PAGE, ILLINOIS
From 11-JUL-11 07:16:00 to 11-JUL-11 07:16:00 (CST-6)
Location: WESTMONT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Several 4-inch diameter trees were blown down.

Thunderstorm Wind in KENDALL, ILLINOIS
From 11-JUL-11 06:48:00 to 11-JUL-11 06:50:00 (CST-6)
Location: BRISTOL
Magnitude: 55.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Newspaper

A 4 to 5 inch diameter tree was blown down as were several large limbs.  A backyard wooden jungle gym was destroyed.