During the evening of June 29th, a line of severe thunderstorms moved across northern Illinois producing widespread wind damage across portions of the southwest and southern suburbs of Chicago.

Thunderstorm Wind in LA SALLE, ILLINOIS
From 29-JUN-12 21:56:00 to 29-JUN-12 21:56:00 (CST-6)
Location: RANSOM
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winds were estimated from 60 to 70 mph.

Thunderstorm Wind in LEE, ILLINOIS
From 29-JUN-12 19:00:00 to 29-JUN-12 19:02:00 (CST-6)
Location: DIXON
Magnitude: 64.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Two separate reports were received from just north of Dixon of wind gusts to 74 mph.  Multiple large trees and power lines were blown down across the area.

Thunderstorm Wind in KENDALL, ILLINOIS
From 29-JUN-12 20:14:00 to 29-JUN-12 20:14:00 (CST-6)
Location: PLANO
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Two 70-foot sections of wooden fencing were blown down.

Thunderstorm Wind in KENDALL, ILLINOIS
From 29-JUN-12 20:31:00 to 29-JUN-12 20:31:00 (CST-6)
Location: OSWEGO
Magnitude: 80.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees and tree limbs were blown down.

Thunderstorm Wind in WILL, ILLINOIS
From 29-JUN-12 20:40:00 to 29-JUN-12 20:45:00 (CST-6)
Location: PLAINFIELD
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

A small tree approximately four to five inches in diameter was snapped a few feet above the ground approximately three miles northwest of Joliet.  At Renwick Road and Old Renwick Trail, large limbs from an oak tree were snapped.

Hail in WILL, ILLINOIS
From 29-JUN-12 21:03:00 to 29-JUN-12 21:11:00 (CST-6)
Location: MOKENA
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in GRUNDY, ILLINOIS
From 29-JUN-12 22:11:00 to 29-JUN-12 22:11:00 (CST-6)
Location: CARBON HILL
Magnitude: 63.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in WILL, ILLINOIS
From 29-JUN-12 22:14:00 to 29-JUN-12 22:14:00 (CST-6)
Location: NEW LENOX
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Power lines were blown down north of Francis Road and just East of Cedar Road.

Hail in KANKAKEE, ILLINOIS
From 29-JUN-12 22:37:00 to 29-JUN-12 22:43:00 (CST-6)
Location: BOURBONNAIS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in WILL, ILLINOIS
From 29-JUN-12 20:46:00 to 29-JUN-12 20:46:00 (CST-6)
Location: JOLIET
Magnitude: 50.00 EG
Property damage: 120.00K
Crop damage: 0.00K
Reported by: Newspaper

High winds moving across the area caused power lines to fall onto the roof of a house on Eastern Avenue in Joliet igniting a fire.  Nobody was home at the time.  The home was destroyed.

Lightning in WILL, ILLINOIS
From 29-JUN-12 20:56:00 to 29-JUN-12 20:56:00 (CST-6)
Location: RAYNOR PARK
Property damage: 105.00K
Crop damage: 0.00K
Reported by: Newspaper

Lightning struck a house on the 2100 block of Dartmoor Drive causing a fire.  Residents were not home at the time but a pet dog was killed in the fire.  The house was significantly damaged and was uninhabitable.

Thunderstorm Wind in WILL, ILLINOIS
From 29-JUN-12 20:48:00 to 29-JUN-12 20:48:00 (CST-6)
Location: JOLIET WILHEM FLD AR
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

A man was injured at Route 66 Raceway when an inflated oil can that was used for advertising blew into the man and knocked him into a wall.  He suffered a broken leg and shoulder.

Thunderstorm Wind in WILL, ILLINOIS
From 29-JUN-12 20:45:00 to 29-JUN-12 20:50:00 (CST-6)
Location: CREST HILL
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Large branches were blown down across Crest Hill.  One tree with a five to six inch diameter trunk was snapped in half.  Another tree with a four to five inch diameter trunk was broken at the base.

Thunderstorm Wind in WILL, ILLINOIS
From 29-JUN-12 20:50:00 to 29-JUN-12 20:55:00 (CST-6)
Location: LOCKPORT LEWIS ARPT
Magnitude: 76.00 MG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: NWS Employee

Large trees were blown down onto cars on Route 53.  Three of the four lanes were blocked by two large uprooted trees.  Additional trees were blown down across portions of Romeoville and Lockport.  Winds gusting to 87 mph were recorded at the National Weather Service (NWS) office in Romeoville.  A ten inch diameter tree was snapped at its base near the NWS building.  At Hudson Street and Geneva Street, a four inch diameter tree fell onto a parked car, taking out power lines in the process.