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Elev 558 ft, 40.2 °N, 89.7 °W

Mason City, IL Severe Weather Alertstar_ratehome

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Current Station
Personal Weather Station
Location: Mason City, IL
Elevation: 558ft
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Active Weather Alerts

River Flood Warning
Issued: 1:53 PM Aug. 25, 2026 – National Weather Service
...FLOOD WARNING NOW IN EFFECT UNTIL FRIDAY EVENING...

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

* WHERE...Illinois River near Havana.

* WHEN...Until Friday evening.

* IMPACTS...At 14.0 feet, Minor flooding begins to agricultural areas
not protected by levees.

* ADDITIONAL DETAILS...
- At 8:45 AM CDT Tuesday the stage was 15.7 feet.
- Recent Activity...The maximum river stage in the 24 hours ending
at 8:45 AM CDT Tuesday was 16.0 feet.
- Forecast...The river is expected to fall below flood stage Friday
afternoon and continue falling to 11.7 feet Tuesday, September
01.
- Flood stage is 14.0 feet.
- http://www.weather.gov/safety/flood


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All Times CDT Fld     Observed          Forecasts (7 am)
Location      Stg   Stg   Day/Time      Wed   Thu   Fri

Illinois River
Havana        14.0  15.7  Tue 8 am      15.2  14.8  14.3



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