Full Notification

Thunderstorms are expected across the area tonight with the potential to produce heavy rainfall.

* WHAT...Flash flooding caused by excessive rainfall is possible.

* WHERE...Portions of central into western Iowa, including the following counties, in central Iowa, Boone, Dallas, Polk and Webster. In north central Iowa, Humboldt and Kossuth. In northwest Iowa, Emmet, Palo Alto and Pocahontas. In south central Iowa, Appanoose, Clarke, Decatur, Lucas, Madison, Marion, Monroe, Ringgold, Union, Warren and Wayne. In southwest Iowa, Adair, Adams, Cass and Taylor. In west central Iowa, Audubon, Calhoun, Carroll, Crawford, Greene, Guthrie and Sac.

* WHEN...From 10 PM CDT this evening through Wednesday 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 occur in poor drainage and urban areas. Significant ponding may also occur.

* ADDITIONAL DETAILS... - Thunderstorms producing heavy rainfall are possible tonight through the overnight with 1-3" of rainfall, and smaller pockets of 3-5" or more.

* AFFECTED AREAS: EMMET ... KOSSUTH ... PALO ALTO ... POCAHONTAS ... HUMBOLDT ... SAC ... CALHOUN ... WEBSTER ... CRAWFORD ... CARROLL ... GREENE ... BOONE ... AUDUBON ... GUTHRIE ... DALLAS ... POLK ... CASS ... ADAIR ... MADISON ... WARREN ... MARION ... ADAMS ... UNION ... CLARKE ... LUCAS ... MONROE ... TAYLOR ... RINGGOLD ... DECATUR ... WAYNE ... APPANOOSE

Instructions:

For the latest waterway observations and forecasts refer to weather.gov/desmoines/water.