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Elev 510 ft, 38.26 °N, 90.38 °W

Herculaneum, MO Severe Weather Alertstar_ratehome

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Current Station
Personal Weather Station
Location: Herculaneum, MO
Elevation: 510ft
Nearby Weather Stations

Active Weather Alerts

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



&&



River Flood Warning
Issued: 4:54 PM Apr. 29, 2026 – National Weather Service
...FLOOD WARNING NOW IN EFFECT FROM THIS EVENING TO LATE SUNDAY
NIGHT...

* WHAT...Minor flooding is forecast.

* WHERE...Mississippi River near Herculaneum.

* WHEN...From this evening to late Sunday night.

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

* ADDITIONAL DETAILS...
- At 11:00 AM CDT Wednesday the stage was 24.8 feet.
- Forecast...The river is expected to rise above flood stage late
this evening to a crest of 27.8 feet early Friday morning. It
will then fall below flood stage late Saturday evening.
- Flood stage is 26.0 feet.



&&


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

Mississippi River
Herculaneum     26.0    24.8    26.9  27.8  27.1  25.1  22.5



&&



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