A round of strong to severe thunderstorms brought excessive rainfall rates to portions of central Illinois during the evening of June 10th. Another round of thunderstorms developed along and north of a stationary frontal boundary during the pre-dawn hours of June 11th.  Excessive rainfall rates produced flooding of viaducts and low-lying spots in Springfield, with a few cars becoming stranded in the high water. Flash Flooding was also reported in much of Christian County and southern Shelby County.

Flood in SHELBY, ILLINOIS
From 11-JUN-18 08:00:00 to 11-JUN-18 11:00:00 (CST-6)
Location: DOLLVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rainfall rates of nearly 2.00 inches per hour for up to three hours during the early morning of June 11th resulted in flash flooding in a large part of Shelby County. Observers reported total rainfall amounts 5.00 to 7.00 inches in the flooded areas, with highest totals in the western part of the county from Oconee to Tower Hill. Many rural roads were impassable according to the county emergency manager. The flooding of roadways continued across Shelby County through the late morning hours of June 11th, despite the rain ending shortly after daybreak. The flooding subsided by Noon CDT.

Flood in CHRISTIAN, ILLINOIS
From 11-JUN-18 08:00:00 to 11-JUN-18 11:00:00 (CST-6)
Location: ROBY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Heavy rainfall rates of nearly 2.00 inches per hour for up to three hours during the early morning of June 11th resulted in flash flooding in central and southern Christian County. Observers reported total rainfall amounts 6.00 to 8.00 inches in the flooded areas, with highest totals from Palmer to Pana. Many rural roads were impassable and extensive street flooding was reported in Pana and parts of Taylorville. The flooding of roadways continued across central and southern Christian County through the late morning hours of June 11th, despite the rain ending shortly after daybreak. The flooding subsided by Noon CDT.

Flash Flood in SHELBY, ILLINOIS
From 11-JUN-18 04:00:00 to 11-JUN-18 08:00:00 (CST-6)
Location: DOLLVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rainfall rates of nearly 2.00 inches per hour for up to three hours during the early morning of June 11th resulted in flash flooding in a large part of Shelby County. Observers reported total rainfall amounts 5.00 to 7.00 inches in the flooded areas, with highest totals in the western part of the county from Oconee to Tower Hill. Many rural roads were impassable according to the county emergency manager.

Flash Flood in SANGAMON, ILLINOIS
From 11-JUN-18 03:00:00 to 11-JUN-18 07:30:00 (CST-6)
Location: ZENOBIA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rainfall rates of 1.00 to 2.00 inches per hour for two to three hours, shortly after Midnight, resulted in flash flooding in central and southeast Sangamon County, including the southern parts of the city of Springfield. Most viaducts in Springfield were flooded and impassable. Several rural roads west of Springfield and in the southeast part of the county along the Christian County line were flooded. The flooding subsided shortly after daybreak.

Flash Flood in CHRISTIAN, ILLINOIS
From 11-JUN-18 03:30:00 to 11-JUN-18 08:00:00 (CST-6)
Location: ROBY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Heavy rainfall rates of nearly 2.00 inches per hour for up to three hours during the early morning of June 11th resulted in flash flooding in central and southern Christian County. Observers reported total rainfall amounts 6.00 to 8.00 inches in the flooded areas, with highest totals from Palmer to Pana. Many rural roads were impassable and extensive street flooding was reported in Pana and parts of Taylorville.