* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of southwest Illinois, including the following area, Randolph IL and Missouri, including the following areas, Crawford MO, Iron MO, Madison MO, Reynolds MO, Saint Francois MO, Sainte Genevieve MO and Washington MO. * WHEN...Through Saturday morning. * IMPACTS...Low-water crossings may be flooded. Extensive street flooding and flooding of creeks and rivers are possible. * ADDITIONAL DETAILS... - Multiple rounds of showers and thunderstorms are expected in and near the watch area this afternoon through tonight. - Locations in southeast Missouri, including southern Crawford, Reynolds, Iron, and Madison Counties, will be especially susceptible with several inches of rain already received since Thursday evening.