Flash Flood in Jasper County, Illinois

Heavy rain of 1.50 to 5.00 inches, falling onto already saturated ground, resulted in flash flooding in northern Jasper County from the late evening of June 11th into the early morning of June 12th. The heaviest rain and most significant flooding was in extreme northeast Jasper County from Yale to the Crawford County line. Much of the flooding subsided just after 4:00 am CDT.

A series of weak impulses interacted with a stationary frontal boundary extending from northeast Missouri to southwest Indiana to produce several rounds of thunderstorms across south-central Illinois from the evening of June 11th into the morning of June 12th. The strongest cells produced damaging wind gusts of around 60mph and hail as large as golf balls during the evening of June 11th. In addition, excessive rainfall rates occurring on top of already saturated soils led to localized flash flooding. The hardest hit locations were from Christian and Shelby counties southeastward to Effingham, Clay, Clark and Crawford counties, where numerous roads were closed due to high water.