Flood Watch

* WHAT...Flooding caused by excessive rainfall continues to be possible.

* WHERE...Portions of central, north central, northeast, 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 south central Iowa, Appanoose, Clarke, Decatur, Lucas, Madison, Mahaska, Marion, Monroe, Ringgold, Union, Warren and Wayne. In southeast Iowa, Davis and Wapello. In southwest Iowa, Adair, Adams, Cass and Taylor. In west central Iowa, Audubon, Calhoun, Carroll, Crawford, Greene, Guthrie and Sac.

* WHEN...Through late tonight.

* IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Area creeks and streams are running high and could flood with more heavy rain.

* ADDITIONAL DETAILS... - Isolated flash flooding is possible due to rain last night as well as additional rain through midday today. Poor drainage and low lying areas may experience ponding.

Significant rises are expected or ongoing on many rivers and streams, which may exceed flood stage. Of most concern include but are not limited to portions of the following river basins... South Skunk from Ames downstream, Des Moines from Des Moines downstream, Raccoon downstream of U.S. Hwy 30, as well as the Middle, South and Grand.