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40.37 °N, 89.55 °W

Delavan, IL Severe Weather Alertstar_ratehome

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Current Station
Personal Weather Station
Location: Delavan, IL
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Active Weather Alerts

Freeze Warning
Issued: 7:49 AM Apr. 20, 2026 – National Weather Service
...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING...

* WHAT...Sub-freezing temperatures as low as lower 30s.

* WHERE...Portions of central, east central, and west central
Illinois.

* WHEN...Until 8 AM CDT this morning.

* IMPACTS...Frost and freeze conditions could damage or kill
sensitive vegetation and possibly damage unprotected outdoor
plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

River Flood Warning
Issued: 1:17 AM Apr. 20, 2026 – National Weather Service
...FLOOD WARNING IN EFFECT FROM LATE MONDAY NIGHT TO SUNDAY, APRIL
26...

* WHAT...Minor flooding is forecast.

* WHERE...Illinois River at Peoria.

* WHEN...From late Monday night to Sunday, April 26.

* IMPACTS...At 18.0 feet, Some flooding begins to bottomland not
protected by levees.

* ADDITIONAL DETAILS...
- At 7:45 PM CDT Sunday the stage was 17.3 feet.
- Forecast...The river is expected to rise above flood stage
early Tuesday morning to a crest of 18.5 feet early Wednesday
afternoon. It will then fall below flood stage Saturday
evening.
- Flood stage is 18.0 feet.
- http://www.weather.gov/safety/flood

&&

Fld   Observed           Forecasts (7 pm CDT)
Location      Stg   Stg   Day/Time     Mon   Tue   Wed

Illinois River
Peoria        18.0  17.3  Sun 7 pm CDT 17.8  18.3  18.5


&&



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