* WHAT...Flooding caused by excessive rainfall is possible. * WHERE...Portions of central, east central, southeast, and west central Illinois, including the following counties, in central Illinois, Christian, De Witt, Logan, Macon, Mason, Menard, Piatt, Sangamon and Shelby. In east central Illinois, Champaign, Clark, Coles, Cumberland, Douglas, Edgar, Moultrie and Vermilion. In southeast Illinois, Clay, Crawford, Effingham, Jasper, Lawrence and Richland. In west central Illinois, Cass, Fulton, Morgan, Schuyler and Scott. * WHEN...From Sunday morning through late Sunday night. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Rainfall amounts of 1 to 3 inches are expected with locally higher amounts possible. - http://www.weather.gov/safety/flood