Severe thunderstorms developed during the afternoon hours of June 18th and moved across northerast Illinois, producing mainly wind damage.

Flash Flood in WINNEBAGO, ILLINOIS
From 18-JUN-07 20:40:00 to 18-JUN-07 23:00:00 (CST-6)
Location: ROCKTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several roads closed with up to 3 feet of standing water.

Flash Flood in BOONE, ILLINOIS
From 18-JUN-07 20:50:00 to 18-JUN-07 23:00:00 (CST-6)
Location: POPLAR GROVE
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Whiting Road washed out, just west of Popular Grove.

Hail in GRUNDY, ILLINOIS
From 18-JUN-07 16:17:00 to 18-JUN-07 16:20:00 (CST-6)
Location: MORRIS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Lightning in DU PAGE, ILLINOIS
From 18-JUN-07 14:52:00 to 18-JUN-07 14:52:00 (CST-6)
Location: WHEATON
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A multi-family apartment was damaged by fire after a lightning strike near Naperville and Butterfield Roads.

Thunderstorm Wind in LAKE, ILLINOIS
From 18-JUN-07 14:00:00 to 18-JUN-07 14:00:00 (CST-6)
Location: ANTIOCH
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Tree limbs were blown down.

Thunderstorm Wind in DU PAGE, ILLINOIS
From 18-JUN-07 14:30:00 to 18-JUN-07 14:30:00 (CST-6)
Location: LISLE
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Construction signs and small tree limbs blown down near Arboretum Estates Subdivision.

Thunderstorm Wind in COOK, ILLINOIS
From 18-JUN-07 14:55:00 to 18-JUN-07 14:55:00 (CST-6)
Location: DES PLAINES
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Numerous tree limbs blown down.

Thunderstorm Wind in COOK, ILLINOIS
From 18-JUN-07 15:33:00 to 18-JUN-07 15:33:00 (CST-6)
Location: CHICAGO
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Up to 20 trees and tree limbs blown down along King Drive between 70th and 100th Streets to LakeShore Drive.

Thunderstorm Wind in LAKE, ILLINOIS
From 18-JUN-07 15:35:00 to 18-JUN-07 15:35:00 (CST-6)
Location: LAKE FOREST
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees blown down.

Thunderstorm Wind in DE KALB, ILLINOIS
From 18-JUN-07 13:45:00 to 18-JUN-07 13:45:00 (CST-6)
Location: DE KALB
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

A gust to 60 mph was measured at the DeKalb Airport.

Thunderstorm Wind in DU PAGE, ILLINOIS
From 18-JUN-07 14:36:00 to 18-JUN-07 14:36:00 (CST-6)
Location: GLEN ELLYN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in GRUNDY, ILLINOIS
From 18-JUN-07 16:15:00 to 18-JUN-07 16:18:00 (CST-6)
Location: MORRIS
Magnitude: 60.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Emergency Manager

An area of Morris suffered tree damage and the falling trees and tree limbs damaged several houses.  Some trees were 2 to 3 feet in diameter.  The area of damage was bounded by Vine Street to the west, the railroad tracks to the north, Jeffereson Street to the south and Washington Street on the east.

Thunderstorm Wind in WILL, ILLINOIS
From 18-JUN-07 15:30:00 to 18-JUN-07 15:30:00 (CST-6)
Location: PEOTONE
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: COOP Observer

A 14 inch diameter tree limb was blown down and an empty pool caved in.