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FGUS73 KLOT 241918

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197-201-INC089-250600-



Hydrologic Outlook

National Weather Service Chicago IL

218 PM CDT Sun Mar 24 2024



...Rises in river levels to bankfull and ponding in low-lying spots 

possible Monday night and Tuesday...

         

A strong storm system will deliver waves of showers and a few 

thunderstorms Monday afternoon through Tuesday. Widespread rainfall 

amounts over 1 inch are possible with embedded streaks as high as 3 

to 4 inches. The exact placement of the heaviest rainfall will 

depend on the ultimate movement of the most persistent showers and 

thunderstorms, with our forecast currently favoring areas west of 

Interstate 55 as having the highest threat for more than 1 inch of 

rain.



With vegetation remaining dormant and soil moisture remaining above 

average, soil infiltration of rainfall will be limited and cause 

increased runoff into low lying spots and rivers. As a result, 

rivers may rise to or above bankfull, and low-lying locations with 

poor drainage such as farm fields and ditches may flood where the 

rain is heaviest.



This outlook means that elevated water levels and potential impacts 

are possible, but not yet certain. Persons should closely monitor 

forecasts including the possibility of flood watches, warnings, and 

advisories.



Additional hydrologic outlooks may be issued over the next 24 hours 

as the rainfall event nears.

$$



Borchardt