Thunderstorm complex developed along a warm front over the forecast area.  There were several reports of damaging winds and flash flooding with these storms.

Flash Flood in MACOUPIN, ILLINOIS
From 18-JUN-11 05:00:00 to 18-JUN-11 12:00:00 (CST-6)
Location: PALMYRA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Up to three inches of rain fell in a short amount of time causing flash flooding.  Numerous roads around the Virden area were flooded.

Thunderstorm Wind in MONROE, ILLINOIS
From 18-JUN-11 05:22:00 to 18-JUN-11 05:22:00 (CST-6)
Location: COLUMBIA
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in MACOUPIN, ILLINOIS
From 17-JUN-11 23:45:00 to 17-JUN-11 23:45:00 (CST-6)
Location: VIRDEN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm winds blew down numerous tree limbs.

Thunderstorm Wind in ST. CLAIR, ILLINOIS
From 18-JUN-11 05:40:00 to 18-JUN-11 05:40:00 (CST-6)
Location: MASCOUTAH
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in WASHINGTON, ILLINOIS
From 18-JUN-11 06:18:00 to 18-JUN-11 06:18:00 (CST-6)
Location: HOYLETON
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in FAYETTE, ILLINOIS
From 18-JUN-11 06:33:00 to 18-JUN-11 06:33:00 (CST-6)
Location: PITTSBURG
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds blew down several trees.  A couple of the trees fell onto power lines, knocking them down.

Thunderstorm Wind in FAYETTE, ILLINOIS
From 18-JUN-11 06:38:00 to 18-JUN-11 06:38:00 (CST-6)
Location: RAMSEY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds blew down several trees around town.  A few of the trees fell onto power lines, knocking them down.

Flash Flood in MONTGOMERY, ILLINOIS
From 18-JUN-11 03:00:00 to 18-JUN-11 12:00:00 (CST-6)
Location: WHITE OAK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Up to three inches of rain fell in a short amount of time causing flash flooding.  Numerous roads were flooded including Illinois Route 16 about a mile northeast of Irving and viaducts in Hillsboro and Raymond.

Flash Flood in MARION, ILLINOIS
From 18-JUN-11 04:30:00 to 18-JUN-11 10:00:00 (CST-6)
Location: HICKORY HILL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Up to four inches of rain fell in a short amount of time causing flash flooding.  Numerous roads were flooded some of which had one to two feet of water over them.  Several cars were stranded in the flood waters.  No injuries were reported.

Flash Flood in CLINTON, ILLINOIS
From 18-JUN-11 04:45:00 to 18-JUN-11 07:00:00 (CST-6)
Location: CARLYLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Up to three inches of rain fell in a short amount of time causing flash flooding.  Several roads in Carlyle were flooded.

Thunderstorm Wind in ADAMS, ILLINOIS
From 18-JUN-11 04:40:00 to 18-JUN-11 04:40:00 (CST-6)
Location: QUINCY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Thunderstorm winds uprooted a couple of trees and knocked down some power lines in town.  On large tree landed on an unoccupied truck destroying it.