Interactive NWS Alert

Radar valid at 424 am CDT, Aug 18th 2026

...Forecast flooding changed from Minor to Moderate severity and increased in duration for the following rivers in Illinois... La Moine River at Colmar affecting Hancock and McDonough Counties.

ILC067-109-180115-
/O.EXT.KDVN.FL.W.0064.000000T0000Z-260818T0924Z/
/CLMI2.2.ER.260815T1400Z.260817T0600Z.260818T0124Z.NO/
807 PM CDT Sun Aug 16 2026

...FLOOD WARNING NOW IN EFFECT UNTIL LATE MONDAY NIGHT...

* WHAT...Minor flooding is occurring and moderate flooding is
forecast.

* WHERE...La Moine River at Colmar.

* WHEN...Until late Monday night.

* IMPACTS...At 22.5 feet, Water affects lower roads around
Birmingham.

* ADDITIONAL DETAILS...
- At 7:45 PM CDT Sunday the stage was 21.8 feet.
- Forecast...The river will rise to 22.0 feet just after midnight
tonight. It will then fall below flood stage tomorrow evening to
5.1 feet Thursday evening. It will rise to 5.2 feet early Friday
morning. It will then fall again and remain below flood stage.
- Flood stage is 20.0 feet.


&&

LAT...LON 4043 9093 4024 9074 4013 9066 4013 9072
4041 9102

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