* WHAT...Flash flooding and areal flooding caused by excessive rainfall is possible. * WHERE...Portions of west central Illinois, southeast Iowa, and northeast Missouri. * WHEN...From Sunday morning through Sunday evening. * IMPACTS...Excessive runoff may result in localized flash flooding, 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. * ADDITIONAL DETAILS... - Rounds of thunderstorms producing heavy rain are expected on Sunday. Rainfall amounts between 1-3 inches are anticipated.