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Elev 149 ft, 38.42 °N, 90.38 °W

Arnold, MO Severe Weather Alertstar_ratehome

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Current Station
Personal Weather Station
Location: Arnold, MO
Elevation: 149ft
Nearby Weather Stations

Active Weather Alerts

River Flood Warning
Issued: 2:38 AM Apr. 30, 2026 – National Weather Service
...FLOOD WARNING NOW IN EFFECT UNTIL SUNDAY EVENING...

* WHAT...Minor flooding is forecast.

* WHERE...Mississippi River near Herculaneum.

* WHEN...Until Sunday evening.

* IMPACTS...At 28.3 feet, Near this height, the walking trail
(extension of Station Road) at Bates Memorial Park begins flooding.

* ADDITIONAL DETAILS...
- At 8:30 PM CDT Wednesday the stage was 25.7 feet and rising.
- Forecast...The river is expected to rise above flood stage just
after midnight tonight to a crest of 27.6 feet early Friday
morning. It will then fall below flood stage Saturday afternoon.
- Flood stage is 26.0 feet.



&&


All Times CDT    Fld   Observed  Forecasts (7:00 am)
Location         Stg     Stage   Fri   Sat   Sun   Mon   Tue

Mississippi River
Herculaneum     26.0    25.7    27.6  26.8  24.7  22.0  18.8



&&



River Flood Warning
Issued: 1:12 AM Apr. 30, 2026 – National Weather Service
...FLOOD WARNING NOW IN EFFECT UNTIL TUESDAY MORNING...

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

* WHERE...Meramec River near Arnold.

* WHEN...Until Tuesday morning.

* IMPACTS...At 27.0 feet, Meramec Bottom Road between Wells Road and
Kerth Road begins flooding near this height.

* ADDITIONAL DETAILS...
- At 7:30 PM CDT Wednesday the stage was 25.9 feet and rising.
- Recent Activity...The river rose above flood stage early in the
morning on April 29.
- Forecast...The river is expected to rise to a crest of 28.4 feet
Friday morning. It will then fall below flood stage early Monday
morning.
- Flood stage is 24.0 feet.



&&


All Times CDT Fld   Observed  Forecasts (7:00 am)
Location      Stg     Stage   Fri   Sat   Sun   Mon   Tue

Meramec River
Arnold       24.0    25.9    28.4  28.0  26.3  23.7  20.6



&&



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