WHAT: Flash flooding caused by excessive rainfall continues to be
possible.

WHERE: Portions of Illinois, including the following areas, Boone,
Central Cook, De Kalb, DuPage, Kane, Kendall, Lake IL, Lee,
Northern Cook, Northern Will, Ogle and Southern Cook and northwest
Indiana, including the following areas, Lake IN and Porter.

WHEN: Through early Sunday morning.

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:
- An additional round of showers and thunderstorms, some with very
heavy rainfall, are expected this evening and overnight which may
result in areas of flash flooding, particularly over urban or
areas of poor drainage.
- http://www.weather.gov/safety/flood