Flood Watch

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

* WHERE...Portions of Illinois, including the following areas, Central Cook, De Kalb, DuPage, Eastern Will, Grundy, Kane, Kendall, La Salle, Lake IL, Northern Cook, Northern Will, Southern Cook and Southern Will and northwest Indiana, including the following area, Lake IN.

* WHEN...Until 4 AM CDT Saturday.

* IMPACTS...Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Roads and streets may be flooded.

* ADDITIONAL DETAILS... - Multiple rounds of heavy rainfall from thunderstorms possible across the area this evening into the overnight. Rain rates in excess of 1 to 2 inches per hour over areas that have previously received heavy rainfall may lead to flooding. - http://www.weather.gov/safety/flood