Wetter-Warnungen, Mahaska County Courthouse

Flood Watch issued May 21 at 4:20AM CDT until May 21 at 7:00PM CDT by NWS Des Moines IA * WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of central, north central, northeast, northwest, south central, 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, Cerro Gordo, Franklin, Hancock, Humboldt, Kossuth, Winnebago, Worth and Wright. In northeast Iowa, Black Hawk and Bremer. In northwest Iowa, Emmet, Palo Alto and Pocahontas. In south central Iowa, Madison, Mahaska, Marion and Warren. In southwest Iowa, Adair and Cass. In west central Iowa, Audubon, Calhoun, Carroll, Crawford, Greene, Guthrie and Sac. * WHEN...Through this evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - 3 to 5 inches of rain have already fallen over portions of northern and north central Iowa. Slow moving storms with efficient rainfall rates will continue through the early morning hours, and could impact the morning commute. You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. For the latest river and stream observations and forecasts refer to weather.gov/desmoines/water.