Illinois Severe Flood Warning | Effective 06/21/2026 19:14
...The Flood Warning continues for the following rivers in
Illinois...
Sangamon River at Monticello affecting Piatt County.
Sangamon River near Chandlerville affecting Mason and Cass
Counties.
.The following forecasts are based on observed precipitation, soil
moisture conditions, and forecast precipitation.
* WHAT...Minor flooding is forecast.
* WHERE...Sangamon River near Chandlerville.
* WHEN...From Tuesday morning to Thursday afternoon.
* ADDITIONAL DETAILS...
- At 9:00 PM CDT Sunday the stage was 454.8 feet.