A stationary front will bring a flash flood threat midday today in eastern Iowa and western Illinois.
A stalled warm frontal boundary positioned in central and eastern Iowa and extending southeast into west central Illinois is the focal point for heavy rain producing thunderstorms. It is also allowing for something called training storms, where storms redevelop is the same spot and look as if they aren't moving. This will bring a flash flood threat close to the Mississippi River through midday. Additional rain totals of 2-4 inches possible, especially in eastern Iowa. There is a lot of moisture convergence for these storms to tap into along the front along with instability to help generate storm activity.
These storms will slowly progress east, combined with already soggy soil for some will add to the threat.
Widely scattered storms are possible farther east later this afternoon.