DES MOINES  — Authorities say flash flooding is occurring across several counties in northeast Iowa, thanks to heavy rains.

The National Weather Service said Thursday that 1 to 2 inches an hour have fallen in spots, and more thunderstorms are expected to produce another 1 to 2 inches. The same storms also may also be capable of producing hail and strong winds.

The service says water is covering some streets in Hawkeye and says there's water over the pavement on U.S. Highway 18 west of Hawkeye.

The service also says at least three tornadoes were reported Wednesday evening in parts of southern Floyd County and northern Butler County. Two machine sheds were destroyed southeast of Marble Rock, and trees were knocked down in several areas.

It's unclear whether the storms caused any injuries.