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Monday, Aug 10, 2026 02:30:21

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Areal Flood Advisory 0084
Issued by the Chicago Forecast Office

Action Issued Starts Expiration
New 2026-08-09 14:10:52 2026-08-09 14:10:00 2026-08-09 17:15:00
Continued 2026-08-09 14:38:22 2026-08-09 17:15:00
Continued 2026-08-09 15:45:24 2026-08-09 17:15:00
Expired 2026-08-09 17:11:27 2026-08-09 17:15:00


Action: New
Issued At: 2026-08-09 14:10:52

733 
WGUS83 KLOT 091910
FLSLOT

Flood Advisory
National Weather Service Chicago IL
210 PM CDT Sun Aug 9 2026

ILC031-043-197-092215-
/O.NEW.KLOT.FA.Y.0084.260809T1910Z-260809T2215Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cook IL-DuPage IL-Will IL-
210 PM CDT Sun Aug 9 2026

...FLOOD ADVISORY IN EFFECT UNTIL 515 PM CDT THIS AFTERNOON...

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

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

* WHEN...Until 515 PM CDT.

* 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...
  - At 209 PM CDT, Doppler radar and automated rain gauges indicated
    heavy rain due to thunderstorms. Radar and observations indicate
    these storms are producing a quick 1 to 2 inches of rain in less
    than 45 minutes. This will likely result in minor flooding
    shortly after thunderstorms arrive.
  - Additional rainfall amounts up 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, Naperville, Bolingbrook, Oak Lawn, Downers
    Grove, Woodridge, Midway Airport, Chicago Lawn, Englewood,
    Bridgeport, Roseland, South Shore, Burbank and Blue Island.
  - 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.

&&

LAT...LON 4180 8826 4183 8759 4181 8758 4180 8757
      4179 8757 4179 8756 4177 8755 4177 8754
      4175 8752 4171 8752 4165 8753 4169 8826


$$

Carlaw


Action: Continued
Issued At: 2026-08-09 14:38:22

376 
WGUS83 KLOT 091938
FLSLOT

Flood Advisory
National Weather Service Chicago IL
238 PM CDT Sun Aug 9 2026

ILC031-043-197-092215-
/O.CON.KLOT.FA.Y.0084.000000T0000Z-260809T2215Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cook IL-DuPage IL-Will IL-
238 PM CDT Sun Aug 9 2026

...FLOOD ADVISORY REMAINS IN EFFECT UNTIL 515 PM CDT THIS
AFTERNOON...

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

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

* WHEN...Until 515 PM CDT.

* 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. Slow moving or standing
  water may continue.

* ADDITIONAL DETAILS...
  - At 235 PM CDT, a National Weather Service meteorologist observed
    several inches of flowing water across roadways in downtown
    Naperville due to heavy rain from ongoing thunderstorms. Across
    the advisory area, minor flooding is ongoing or expected to begin
    shortly. Between 0.5 and 2 inches of rain have fallen.
  - Additional rainfall amounts of 0.5 to 1.5 inches are expected
    over the area. This additional rain will result in minor
    flooding.
  - Some locations that will experience flooding include...
    Chicago, Aurora, Naperville, Bolingbrook, Oak Lawn, Downers
    Grove, Woodridge, Midway Airport, Chicago Lawn, Englewood,
    Bridgeport, Roseland, South Shore, Burbank and Blue Island.
  - 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 4180 8826 4183 8759 4181 8758 4180 8757
      4179 8757 4179 8756 4177 8755 4177 8754
      4175 8752 4171 8752 4165 8753 4169 8826


$$

Doom


Action: Continued
Issued At: 2026-08-09 15:45:24

393 
WGUS83 KLOT 092045
FLSLOT

Flood Advisory
National Weather Service Chicago IL
345 PM CDT Sun Aug 9 2026

ILC031-043-197-092215-
/O.CON.KLOT.FA.Y.0084.000000T0000Z-260809T2215Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cook IL-DuPage IL-Will IL-
345 PM CDT Sun Aug 9 2026

...FLOOD ADVISORY REMAINS IN EFFECT UNTIL 515 PM CDT THIS
AFTERNOON...

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

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

* WHEN...Until 515 PM CDT.

* 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. Slow moving or standing
  water may continue.

* ADDITIONAL DETAILS...
  - At 342 PM CDT, doppler radar and automated rain gauges indicated
    heavy rain in the advisory area due to thunderstorms. A National
    Weather Service meteorologist recently observed several inches of
    flowing water across roadways in downtown Naperville making them
    impassable. Across the advisory area, minor flooding is ongoing
    or expected to begin shortly. Between 1 and 2.5 inches of rain
    have fallen.
  - Flooding impacts will continue, but little to no additional heavy
    rainfall is expected.
  - Some locations that will experience flooding include...
    Chicago, Aurora, Naperville, Bolingbrook, Oak Lawn, Downers
    Grove, Woodridge, Midway Airport, Chicago Lawn, Englewood,
    Bridgeport, Roseland, South Shore, Burbank and Blue Island.
  - 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 4180 8826 4183 8759 4181 8758 4180 8757
      4179 8757 4179 8756 4177 8755 4177 8754
      4175 8752 4171 8752 4165 8753 4169 8826


$$

Doom


Action: Expired
Issued At: 2026-08-09 17:11:27

932 
WGUS83 KLOT 092211
FLSLOT

Flood Advisory
National Weather Service Chicago IL
511 PM CDT Sun Aug 9 2026

ILC031-043-197-092221-
/O.EXP.KLOT.FA.Y.0084.000000T0000Z-260809T2215Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cook IL-DuPage IL-Will IL-
511 PM CDT Sun Aug 9 2026

...FLOOD ADVISORY WILL EXPIRE AT 515 PM CDT THIS AFTERNOON...

The Flood Advisory will expire at 515 PM CDT this afternoon for a
portion of northeast Illinois, including the following areas, Cook,
DuPage and Will.

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

&&

LAT...LON 4180 8826 4183 8759 4181 8758 4180 8757
      4179 8757 4179 8756 4177 8755 4177 8754
      4175 8752 4171 8752 4165 8753 4169 8826


$$

Doom



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