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Areal Flood Advisory 0122
Issued by the Chicago Forecast Office

Action Issued Starts Expiration
New 2026-09-20 03:48:34 2026-09-20 03:48:00 2026-09-20 08:00:00
Time Extended 2026-09-20 07:05:11 2026-09-20 10:00:00
Expired 2026-09-20 09:54:18 2026-09-20 10:00:00


Action: New
Issued At: 2026-09-20 03:48:34

611 
WGUS83 KLOT 200848
FLSLOT

Flood Advisory
National Weather Service Chicago IL
348 AM CDT Sun Sep 20 2026

ILC031-043-089-093-197-201300-
/O.NEW.KLOT.FA.Y.0122.260920T0848Z-260920T1300Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cook IL-DuPage IL-Kane IL-Kendall IL-Will IL-
348 AM CDT Sun Sep 20 2026

...FLOOD ADVISORY IN EFFECT UNTIL 8 AM CDT THIS MORNING...

* WHAT...Flooding caused by excessive rainfall is expected.

* WHERE...Cook County in northeastern Illinois...
  DuPage County in northeastern Illinois...
  Southern Kane County in northeastern Illinois...
  Kendall County in northeastern Illinois...
  Northern Will County in northeastern Illinois...

* WHEN...Until 800 AM CDT.

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

* ADDITIONAL DETAILS...
  - At 347 AM CDT, Doppler radar indicated heavy rain due to
    thunderstorms. Minor flooding is ongoing or expected to begin
    shortly in the advisory area. Up to 2 inches of rain have fallen.
  - Additional rainfall amounts of 1 to 2 inches are expected over
    the area. This additional rain will result in minor flooding.
  - Some locations that will experience flooding include...
    Chicago, Aurora, Joliet, Naperville, Cicero, Bolingbrook, Orland
    Park, Tinley Park, Oak Lawn, Berwyn, Wheaton, Oak Park, Downers
    Grove, Elmhurst, Lombard, Bartlett, Ohare Airport, Carol Stream
    and Romeoville.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flood Advisory means minor flooding along waterways and other poor
drainage areas is imminent or may already be occurring. Persons in
the advisory area should use caution and avoid flood waters.

Turn around, dont drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 4191 8860 4199 8827 4201 8765 4198 8764
      4197 8763 4195 8763 4193 8762 4190 8759
      4188 8759 4188 8761 4187 8760 4185 8760
      4177 8755 4175 8752 4147 8753 4146 8860


$$

Petr


Action: Time Extended
Issued At: 2026-09-20 07:05:11

979 
WGUS83 KLOT 201204
FLSLOT

Flood Advisory
National Weather Service Chicago IL
704 AM CDT Sun Sep 20 2026

ILC031-043-089-093-197-201500-
/O.EXT.KLOT.FA.Y.0122.000000T0000Z-260920T1500Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cook IL-DuPage IL-Kane IL-Kendall IL-Will IL-
704 AM CDT Sun Sep 20 2026

...FLOOD ADVISORY NOW IN EFFECT UNTIL 10 AM CDT THIS MORNING...

* WHAT...Flooding caused by excessive rainfall continues.

* WHERE...East Central Cook County in northeastern Illinois...
  Southern DuPage County in northeastern Illinois...
  Southern Kane County in northeastern Illinois...
  Northern Kendall County in northeastern Illinois...
  Northwestern Will County in northeastern Illinois...

* WHEN...Until 1000 AM CDT.

* IMPACTS...Creeks and streams may rise out of their banks.

* ADDITIONAL DETAILS...
  - At 701 AM CDT, Doppler radar and automated rain gauges indicated
    heavy rain due to thunderstorms earlier this morning. Minor
    flooding is ongoing in the advisory area. Up to 2 inches of rain
    have fallen.
  - Though heavy rain has ended, creeks and streams may continue to
    rise and will remain elevated this morning.
  - Some locations that will experience flooding include...
    South Side of Chicago, Aurora, Naperville, Cicero, Bolingbrook,
    Oak Lawn, Berwyn, Wheaton, Downers Grove, Lombard, Woodridge,
    Oswego, Midway Airport, South Lawndale, Chicago Lawn, Englewood,
    Bridgeport, Roseland, Chicago Loop, South Shore and Burbank.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flood Advisory means minor flooding along waterways and other poor
drainage areas is imminent or may already be occurring. Persons in
the advisory area should use caution and avoid flood waters.

Turn around, dont drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 4184 8860 4187 8760 4183 8760 4180 8757
      4179 8757 4179 8756 4177 8755 4176 8754
      4175 8752 4168 8752 4166 8860


$$

Kluber


Action: Expired
Issued At: 2026-09-20 09:54:18

995 
WGUS83 KLOT 201454
FLSLOT

Flood Advisory
National Weather Service Chicago IL
954 AM CDT Sun Sep 20 2026

ILC031-043-089-093-197-201504-
/O.EXP.KLOT.FA.Y.0122.000000T0000Z-260920T1500Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cook IL-DuPage IL-Kane IL-Kendall IL-Will IL-
954 AM CDT Sun Sep 20 2026

...FLOOD ADVISORY WILL EXPIRE AT 10 AM CDT THIS MORNING...

The Flood Advisory will expire at 10 AM CDT this morning for a
portion of northeast Illinois, including the following areas, Cook,
DuPage, Kane, Kendall and Will.

The heavy rain has ended. Flood waters have receded. Flooding is no
longer expected to pose a threat. Please continue to heed remaining
road closures.

A Flood Watch remains in effect until 100 PM CDT for portions of
Illinois and northwest Indiana...

&&

LAT...LON 4184 8860 4187 8760 4183 8760 4180 8757
      4179 8757 4179 8756 4177 8755 4176 8754
      4175 8752 4168 8752 4166 8860


$$

Kluber



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