National Weather Service: Flood Watch until 6pm 
...FLOOD WATCH IN EFFECT UNTIL 6 PM CDT THIS EVENING...
* WHAT...Flash flooding caused by excessive rainfall is possible.
* WHERE...Portions of northeast Illinois, including the following
areas, Central Cook, DuPage, Eastern Will, Grundy, Kane, Kendall,
Northern Cook, Northern Will, Southern Cook and Southern Will and
northwest Indiana, including the following area, Lake IN.
* WHEN...Until 6 PM CDT this evening.
* IMPACTS...Creeks and streams may rise out of their banks.
Underpasses may be flooded. Roads and streets may be flooded.
Extensive street flooding possible.
* ADDITIONAL DETAILS...
- Slow moving showers and thunderstorms with torrential
rainfall will produce locally very heavy rainfall today.
Rainfall amounts of 2 to 5 inches or more will be possible on
a localized basis. This will lead to instances of flash
flooding into this afternoon.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Flood Watch for flash flooding means rapid-onset flooding is
possible, but not yet certain, based upon the latest forecasts.
Flash flooding is a dangerous situation. Persons with interests
along area rivers, creeks, and other waterways should monitor the
latest forecasts and be prepared to take action should flooding
develop.
Address/Location
Grundy County IL Emergency Management Agency
1320 Union St
Morris, IL 60450
Contact
Emergency: 9-1-1
Non-emergencies: 815-941-3212