* WHAT...Flooding caused by torrential downpours is possible.

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

* WHEN...From 1 PM CDT this afternoon through this evening.

* IMPACTS...Flooding of streets, underpasses, basements, and
vulnerable structures is possible. Storm drains and ditches may be
clogged with debris, increasing the risk of flooding. This is
especially true in the Chicago metropolitan area.

* ADDITIONAL DETAILS...
- Parts of the Flood Watch area have picked up 3 to 6 inches of
rain in the past 48 hours. As a result, many rivers and
creeks in the watch area are already at bankfull and soils
are saturated. Additional torrential downpours today may lead
to flooding, some of which could be significant particularly
in the Chicago metropolitan area.
- http://www.weather.gov/safety/flood

WGUS63 KLOT 041439
FFALOT

Flood Watch
National Weather Service Chicago IL
939 AM CDT Sat Jul 4 2026
ILZ010>013-019>021-103>108-INZ001
/O.NEW.KLOT.FA.A.0009.260704T1800Z-260705T0300Z/
Lee-De Kalb-Kane-DuPage-La Salle-Kendall-Grundy-Northern Cook-Central Cook-Southern Cook-Northern Will-Southern Will-Eastern Will-Lake

...FLOOD WATCH IN EFFECT FROM 1 PM CDT THIS AFTERNOON THROUGH THIS EVENING...

* WHAT...Flooding caused by torrential downpours is possible.

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

* WHEN...From 1 PM CDT this afternoon through this evening.

* IMPACTS...Flooding of streets, underpasses, basements, and
vulnerable structures is possible. Storm drains and ditches may be
clogged with debris, increasing the risk of flooding. This is
especially true in the Chicago metropolitan area.

* ADDITIONAL DETAILS...
- Parts of the Flood Watch area have picked up 3 to 6 inches of
rain in the past 48 hours. As a result, many rivers and
creeks in the watch area are already at bankfull and soils
are saturated. Additional torrential downpours today may lead
to flooding, some of which could be significant particularly
in the Chicago metropolitan area.
- http://www.weather.gov/safety/flood
A Flood Watch means flooding is possible, but not yet certain, based
upon the latest forecasts. Persons with interests along area rivers,
creeks, and other waterways should monitor the latest forecasts and
be prepared to take action should flooding develop.

Monitor the latest forecasts and be prepared to action should
flooding develop.

Local Weather

Chicago, Illinois, US