FFWDMX The National Weather Service in Des Moines has issued a * Flash Flood Warning for... Boone County in central Iowa... Northeastern Dallas County in central Iowa... Southwestern Hamilton County in central Iowa... Northwestern Jasper County in central Iowa... Polk County in central Iowa... Southern Story County in central Iowa... Southeastern Webster County in central Iowa... * Until 830 AM CDT Saturday. * At 226 AM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1.5 and 3.5 inches of rain have fallen. Additional rainfall amounts up to 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Des Moines, Ames, West Des Moines, Ankeny, Urbandale, Johnston, Clive, Altoona, Waukee, Boone, Pleasant Hill, Grimes, Windsor Heights, Bondurant, Polk City, Huxley, Saylorville, Madrid, Mitchellville and Ogden.

FFWDMX The National Weather Service in Des Moines has issued a * Flash Flood Warning for... Jasper County in central Iowa... Southern Marshall County in central Iowa... Southeastern Story County in central Iowa... * Until 815 AM CDT. * At 218 AM CDT, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain across the warned area. Between 1.5 and 2.5 inches of rain have fallen. Additional rainfall amounts of 1.5 to 3 inches are possible in the warned area as more storms move over the area in the next few hours. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar and automated gauges. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Newton, Mitchellville, Colfax, Prairie City, Baxter, Iowa Speedway, Rock Creek Lake, Kellogg, Gilman, Collins, Rhodes, Mingo, Laurel, Lambs Grove, Valeria, Newton Municipal Airport, Prairie City Krohn Airport and Rock Creek State Park.

* WHAT...Flooding caused by excessive rainfall remains possible. * WHERE...Portions of central, north central, northeast, northwest, south central, southeast, southwest, and west central Iowa, including the following counties, in central Iowa, Boone, Dallas, Grundy, Hamilton, Hardin, Jasper, Marshall, Polk, Poweshiek, Story, Tama and Webster. In north central Iowa, Butler, Franklin, Humboldt and Wright. In northeast Iowa, Black Hawk and Bremer. In northwest Iowa, Pocahontas. In south central Iowa, Clarke, Lucas, Madison, Mahaska, Marion, Monroe, Union and Warren. In southeast Iowa, Wapello. In southwest Iowa, Adair, Adams and Cass. In west central Iowa, Audubon, Calhoun, Carroll, Crawford, Greene, Guthrie and Sac. * WHEN...Through Saturday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Flooding may also occur in urban areas and in areas with poor drainage. * ADDITIONAL DETAILS... - Due to antecedent saturated soils and additional heavy rain in the forecast tonight, instances of flooding will be possible.