A meteorologist says there’s not much risk of rainfall heavy enough to further raise the Mississippi River flood threat in eastern Iowa.

A temporary flood barrier failed in Davenport on Tuesday, submerging downtown blocks and forcing some people to seek shelter on rooftops. They later were evacuated by boats.

Davenport City Administrator Corri Spiegel declined to comment early Wednesday about any overnight developments.

Davenport firefighters walk a rescue boat down West River Drive along the freight house in Davenport, Tuesday, April 30, 2019. (Andy Abeyta/Quad City Times via AP)
Davenport firefighters walk a rescue boat down West River Drive along the freight house in Davenport, Tuesday, April 30, 2019. (Andy Abeyta/Quad City Times via AP)

Scattered showers are in the forecast for Wednesday, but National Weather Service meteorologist Alex Gibbs said chances of a thunderstorm system that could bring heavy rain are “pretty low.” The service isn’t warning of severe weather upstream either.

The river is expected to crest Wednesday evening or overnight at 22.4 feet (6.83 meters) in Davenport, short of the record crest of 22.6 feet (6.9 meters) set in July 1993.

Davenport firefighters search the area after the floodwall failed at River Drive and Pershing Avenue sending Mississippi River floodwater into several blocks of downtown Davenport, Iowa Tuesday, April 30, 2019. (Kevin E. Schmidt/Quad City Times via AP)
Davenport firefighters search the area after the floodwall failed at River Drive and Pershing Avenue sending Mississippi River floodwater into several blocks of downtown Davenport, Iowa Tuesday, April 30, 2019. (Kevin E. Schmidt/Quad City Times via AP)

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