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Elev 686 ft, 38.34 °N, 90.15 °W

Waterloo, IL Severe Weather Alertstar_ratehome

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Personal Weather Station
Location: Waterloo, IL
Elevation: 686ft
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Active Weather Alerts

Severe Thunderstorm Watch
Issued: 6:34 PM Apr. 28, 2026 – National Weather Service
THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
172 IN EFFECT UNTIL 9 PM CDT THIS EVENING FOR THE FOLLOWING AREAS

IN ILLINOIS THIS WATCH INCLUDES 2 COUNTIES

IN SOUTHWEST ILLINOIS

MONROE                RANDOLPH

IN MISSOURI THIS WATCH INCLUDES 12 COUNTIES

IN CENTRAL MISSOURI

COLE                  OSAGE

IN EAST CENTRAL MISSOURI

CRAWFORD              FRANKLIN              GASCONADE
JEFFERSON             WASHINGTON

IN SOUTHEAST MISSOURI

IRON                  MADISON               REYNOLDS
SAINT FRANCOIS        SAINTE GENEVIEVE

THIS INCLUDES THE CITIES OF CHESTER, FARMINGTON, JEFFERSON CITY,
SPARTA, SULLIVAN, UNION, AND WASHINGTON.

River Flood Warning
Issued: 4:38 PM Apr. 28, 2026 – National Weather Service
...FLOOD WARNING IN EFFECT FROM WEDNESDAY AFTERNOON TO MONDAY
MORNING...

* WHAT...Minor flooding is forecast.

* WHERE...Mississippi River near Herculaneum.

* WHEN...From Wednesday afternoon to Monday morning.

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

* ADDITIONAL DETAILS...
- At 10:30 AM CDT Tuesday the stage was 22.0 feet.
- Forecast...The river is expected to rise above flood stage
tomorrow afternoon to a crest of 28.4 feet Friday morning. It
will then fall below flood stage early Sunday morning.
- Flood stage is 26.0 feet.



&&


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

Mississippi River
Herculaneum     26.0    22.0    24.9  27.5  28.4  27.7  25.6



&&



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