Flood Watch

Flood Watch
National Weather Service Chicago IL
1133 AM CDT Tue Aug 12 2025

ILZ013-103>108-INZ001-130045-
/O.NEW.KLOT.FA.A.0008.250812T1800Z-250813T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DuPage-Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-
Including the cities of Joliet, Naperville, Orland Park, Park
Forest, Wilmington, Oak Lawn, Plainfield, Mokena, Beecher,
Downers Grove, Manhattan, Schaumburg, Chicago, Crete,
Bolingbrook, Lemont, Cicero, Oak Forest, Oak Park, Hammond,
Peotone, Gary, Des Plaines, Northbrook, Channahon, Merrillville,
Lombard, Calumet City, Carol Stream, Evanston, La Grange,
Palatine, and Wheaton
1133 AM CDT Tue Aug 12 2025

...FLOOD WATCH IN EFFECT THROUGH 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, Northern Cook, Northern
  Will, Southern Cook and Southern Will and northwest Indiana,
  including the following area, Lake IN.

* WHEN...Through this evening.

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

* ADDITIONAL DETAILS...
  - Showers and thunderstorms are possible this afternoon and
    evening. Atmospheric conditions are favorable for rainfall
    rates up to 1-2 inches per hour. In addition to increased
    runoff potential due to urban land cover in the Chicago
    Metropolitan Area, near surface soil moisture in some areas
    is elevated due to recent rainfall.
  - 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.

&&

$$

DK/WSL