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Monday, Aug 10, 2026 02:28:24

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Flash Flood Warning 0044
Issued by the Chicago Forecast Office

Action Issued Starts Expiration
New 2026-08-09 22:10:37 2026-08-09 22:10:00 2026-08-10 01:15:00
Continued 2026-08-09 23:00:38 2026-08-10 01:15:00
Cancelled 2026-08-10 01:01:42 2026-08-10 01:15:00


Action: New
Issued At: 2026-08-09 22:10:37

008 
WGUS53 KLOT 100310
FFWLOT
ILC103-100615-
/O.NEW.KLOT.FF.W.0044.260810T0310Z-260810T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Chicago IL
1010 PM CDT Sun Aug 9 2026

The National Weather Service in Chicago has issued a

* Flash Flood Warning for...
  Eastern Lee County in north central Illinois...

* Until 115 AM CDT.

* At 1010 PM CDT, Doppler radar and automated rain gauges indicated
  slow moving thunderstorms producing rainfall rates of 2 to 3 inches
  per hour. Up to 2.5 inches of rain have already occurred between
  Lee Center and Ashton. Flash flooding is ongoing or expected to
  begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar and automated gauges.

  IMPACT...Rapid-onset flooding of creeks, streams, drainage ditches,
           streets, underpasses, low-lying areas, and other poor
           drainage areas.

* Some locations that will experience flash flooding include...
  Amboy, Franklin Grove, Paw Paw, Sublette, Woodhaven Lakes, Lee,
  Compton, Steward, West Brooklyn and Lee Center.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Warning means rapid-onset flooding is imminent or may
already be occurring. Persons along creeks, drainage ditches, and
other waterways should take immediate precautions to protect life and
property.

&&

LAT...LON 4169 8894 4163 8894 4163 8931 4168 8935
      4175 8935 4184 8934 4186 8931 4186 8915
      4187 8909 4187 8894

FLASH FLOOD...RADAR AND GAUGE INDICATED
EXPECTED RAINFALL RATE...2-3 INCHES IN 1 HOUR

$$

WSL


Action: Continued
Issued At: 2026-08-09 23:00:38

366 
WGUS73 KLOT 100400
FFSLOT

Flash Flood Statement
National Weather Service Chicago IL
1100 PM CDT Sun Aug 9 2026

ILC103-100615-
/O.CON.KLOT.FF.W.0044.000000T0000Z-260810T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lee IL-
1100 PM CDT Sun Aug 9 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 115 AM CDT MONDAY FOR
EASTERN LEE COUNTY...

At 1100 PM CDT, Doppler radar and automated rain gauges indicated
that thunderstorms were moving out of the area and rain rates were
decreasing. Up to 3 inches of rain occurred between Lee Center and
Ashton due to earlier storms.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar and automated gauges.

IMPACT...Rapid-onset flooding of creeks, streams, drainage ditches,
         streets, underpasses, low-lying areas, and other poor
         drainage areas.

Some locations that will experience flash flooding include...
  Amboy, Franklin Grove, Paw Paw, Lee, Compton, Steward, West
  Brooklyn and Lee Center.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Warning means rapid-onset flooding is imminent or may
already be occurring. Persons along creeks, drainage ditches, and
other waterways should take immediate precautions to protect life and
property.

&&

LAT...LON 4169 8894 4163 8894 4163 8917 4165 8918
      4167 8924 4169 8934 4175 8935 4182 8933
      4184 8930 4184 8916 4185 8909 4186 8894

FLASH FLOOD...RADAR AND GAUGE INDICATED

$$

WSL


Action: Cancelled
Issued At: 2026-08-10 01:01:42

476 
WGUS73 KLOT 100601
FFSLOT

Flash Flood Statement
National Weather Service Chicago IL
101 AM CDT Mon Aug 10 2026

ILC103-100611-
/O.CAN.KLOT.FF.W.0044.000000T0000Z-260810T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lee IL-
101 AM CDT Mon Aug 10 2026

...FLASH FLOOD WARNING REPLACED WITH A FLOOD ADVISORY FOR EASTERN LEE
COUNTY...

Flooding of streams, roadways, and fields may be slow to recede
overnight. See the Flood Advisory product for additional information.

&&

LAT...LON 4169 8894 4163 8894 4163 8917 4165 8918
      4167 8924 4169 8934 4175 8935 4182 8933
      4184 8930 4184 8916 4185 8909 4186 8894

$$

WSL



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