Flash Flood Warnings issued for parts of Calumet, Manitowoc, and Brown counties

The National Weather Service in Green Bay has issued Flash Flood Warnings for northeastern Calumet County, northwestern Manitowoc County, and southern Brown County.

The warning is in effect until 4:30 p.m.

NBC 26 also has crews on scene at the Manawa Dam , where residents have been evacuated due to a possible failure of the Dam.

The Weather Service says Doppler Radar indicated heavy rains across the area producing between 1 and 2.5 inches of rain in the warning area. Additional rainfall amounts of 1 to 3 inches are possible in the area.

Flash flooding is expected to begin shortly in small creeks and streams, urban areas, highways, streets, underpasses, and other poor drainage and low-lying areas.

Flash flooding is expected in Brillion, Denmark, Wrightstown, Morrison, Holland, Reedsville, Hilbert, Maple Grove, Hickory Grove, Maribelm Potter, Wayside, Askeaton, Greenleaf, Lark, Shirley, Forest Junction, Manchalville, Dundas, and St. John.

They want to remind drivers to use caution and "Turn around, don't drown" when encountering flooded roads.

Stay with NBC 26 on air and online as this story develops.