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Home Return to list Areal Flood Advisory 0107 Issued by the Chicago Forecast Office
Action: New Issued At: 2026-08-12 12:18:04
372
WGUS83 KLOT 121717
FLSLOT
Flood Advisory
National Weather Service Chicago IL
1217 PM CDT Wed Aug 12 2026
ILC031-063-091-093-099-197-121915-
/O.NEW.KLOT.FA.Y.0107.260812T1717Z-260812T1915Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cook IL-Grundy IL-Kankakee IL-Kendall IL-La Salle IL-Will IL-
1217 PM CDT Wed Aug 12 2026
...FLOOD ADVISORY IN EFFECT UNTIL 215 PM CDT THIS AFTERNOON...
...REPLACES FLASH FLOOD WARNING...
* WHAT...Flooding caused by excessive rainfall is expected.
* WHERE...Northeastern La Salle County in north central Illinois...
Southwestern Cook County in northeastern Illinois...
Grundy County in northeastern Illinois...
Northern Kankakee County in northeastern Illinois...
Southern Kendall County in northeastern Illinois...
Will County in northeastern Illinois...
* WHEN...Until 215 PM CDT.
* IMPACTS...Flooding may occur in poor drainage and urban areas. High
water likely may recede slowly from flooded areas.
* ADDITIONAL DETAILS...
- At 1216 PM CDT, Doppler radar indicated that rainfall was ending
across the area. Some creeks may continue to rise or remain
elevated for a few hours due to earlier heavy rainfall.
- Some locations that will experience flooding include...
Joliet, Kankakee, New Lenox, Park Forest, Mokena, Bourbonnais,
Frankfort, Bradley, Morris, Channahon, Minooka, Steger, Manteno,
Braidwood, Wilmington, Coal City, Marseilles and Peotone.
- 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 4125 8863 4128 8877 4144 8878 4154 8867
4153 8843 4156 8816 4156 8795 4147 8779
4147 8753 4111 8753 4111 8798 4125 8835
$$
WSL
Action: Expired Issued At: 2026-08-12 14:14:21
050
WGUS83 KLOT 121913
FLSLOT
Flood Advisory
National Weather Service Chicago IL
213 PM CDT Wed Aug 12 2026
ILC031-063-091-093-099-197-121923-
/O.EXP.KLOT.FA.Y.0107.000000T0000Z-260812T1915Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cook IL-Grundy IL-Kankakee IL-Kendall IL-La Salle IL-Will IL-
213 PM CDT Wed Aug 12 2026
...FLOOD ADVISORY WILL EXPIRE AT 215 PM CDT THIS AFTERNOON...
The Flood Advisory will expire at 215 PM CDT this afternoon for
portions of north central and northeast Illinois, including the
following areas, in north central Illinois, La Salle. In northeast
Illinois, Cook, Grundy, Kankakee, Kendall and Will.
Heavy rainfall has ended and no new flooding is expected.
&&
LAT...LON 4125 8863 4128 8877 4144 8878 4154 8867
4153 8843 4156 8816 4156 8795 4147 8779
4147 8753 4111 8753 4111 8798 4125 8835
$$
WSL
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