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Sunday, Aug 16, 2026 10:50:14

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Flash Flood Warning 0045Indianapolis, IN
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Areal Flood Advisory 0104
Issued by the Chicago Forecast Office

Action Issued Starts Expiration
New 2026-08-12 09:07:14 2026-08-12 09:06:00 2026-08-12 13:00:00
Cancelled 2026-08-12 12:19:49 2026-08-12 13:00:00


Action: New
Issued At: 2026-08-12 09:07:14

249 
WGUS83 KLOT 121406
FLSLOT

Flood Advisory
National Weather Service Chicago IL
906 AM CDT Wed Aug 12 2026

ILC037-063-093-099-105-121800-
/O.NEW.KLOT.FA.Y.0104.260812T1406Z-260812T1800Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
De Kalb IL-Grundy IL-Kendall IL-La Salle IL-Livingston IL-
906 AM CDT Wed Aug 12 2026

...FLOOD ADVISORY IN EFFECT UNTIL 1 PM CDT THIS AFTERNOON...

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

* WHERE...Northern Livingston County in central Illinois...
  Southeastern De Kalb County in north central Illinois...
  Northeastern La Salle County in north central Illinois...
  Grundy County in northeastern Illinois...
  Kendall County in northeastern Illinois...

* WHEN...Until 100 PM CDT.

* IMPACTS...Roads and streets may be flooded.

* ADDITIONAL DETAILS...
  - At 906 AM CDT, Doppler radar and automated rain gauges indicated
    heavy rain due to thunderstorms with rainfall rates of 1 to 2
    inches per hour moving into an area with high soil moisture due
    to recent rainfall. Minor flooding may begin shortly after the
    onset of rainfall.
  - Some locations that will experience flooding include...
    Oswego, Ottawa, Yorkville, Streator, Morris, Channahon, Minooka,
    Plano, Sandwich, Coal City, Marseilles, Dwight, Sheridan,
    Montgomery, Boulder Hill and Lake Holiday.
  - 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 4163 8891 4171 8883 4172 8826 4112 8824
      4111 8825 4093 8825 4098 8885


$$

WSL


Action: Cancelled
Issued At: 2026-08-12 12:19:49

386 
WGUS83 KLOT 121719 RRA
FLSLOT

Flood Advisory
National Weather Service Chicago IL
1219 PM CDT Wed Aug 12 2026

ILC037-063-093-099-105-121729-
/O.CAN.KLOT.FA.Y.0104.000000T0000Z-260812T1800Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
De Kalb IL-Grundy IL-Kendall IL-La Salle IL-Livingston IL-
1219 PM CDT Wed Aug 12 2026

...FLOOD ADVISORY CONTINUES FOR A PORTION OF THE AREA...

The Flood Advisory has been replaced by a new Flood Advisory for the
portion of the area. See the new Flood Advisory for additional
information.

&&

LAT...LON 4163 8891 4098 8885 4093 8825 4111 8825
      4112 8824 4172 8826 4171 8883


$$

WSL



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