Thunderstorms are expected across much of Iowa this afternoon through the overnight. Brad Small with the National Weather Service says heavy rain could make a bad situation worse in areas of the state that are already soaked.

"We’re just now getting away from flooding that occurred on part of the Raccoon River, so the Raccoon River basin, Nodaway River basin, and some smaller tributaries can’t take much more rain," but Small says, unfortunately, there’s more on the way. Small says a major downpour could force some road closures.

"That’s certainly a possibility, especially if we get these heavy rains in places like Adair, Cass, and Adams Counties – places that were hit hard during the past event," Small says. A flood watch is posted across much of central and western Iowa, covering cities like Mason City, Fort Dodge, Denison, Atlantic, Ames, Des Moines, and Lamoni.