River Flood Warning 48, NWS St. Louis, MO

008 
WGUS83 KLSX 280341
FLSLSX

Flood Statement
National Weather Service St Louis MO
1041 PM CDT Mon Apr 27 2026

...The Flood Warning is extended for the following rivers in
Illinois...Missouri...

  Illinois River at Valley City.

  Mississippi River at Grafton.

  Mississippi River at Saverton.

  Mississippi River at Chester.

  Meramec River near Arnold.

...The Flood Warning continues for the following rivers in
Illinois...Missouri...

  Mississippi River at Canton.

  Mississippi River at Clarksville.

  Mississippi River at Louisiana.

  Kaskaskia River at Vandalia.

  Missouri River near Chamois.

  Missouri River at Hermann.

  Mississippi River at Lock & Dam 21.

  Illinois River at Hardin.

  Mississippi River at Winfield.

  Mississippi River at Hannibal.

  Mississippi River at Quincy.

River forecasts are based on observed precipitation and forecast
precipitation for the next 24 hours.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Motorists should not attempt to drive around barricades or drive cars
through flooded areas.

Rainfall heavier than forecast could cause river levels to rise even
higher than predicted. The National Weather Service will monitor this
developing situation and issue follow up statements as conditions
change.

This product, along with additional weather and stream information,
is available at https://water.noaa.gov/wfo/lsx

&&

ILC149-171-291545-
/O.EXT.KLSX.FL.W.0041.260428T0341Z-000000T0000Z/
/VALI2.1.ER.260428T0056Z.260502T0000Z.000000T0000Z.NO/
1041 PM CDT Mon Apr 27 2026

...FLOOD WARNING NOW IN EFFECT FROM THIS EVENING UNTIL FURTHER
NOTICE...

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

* WHERE...Illinois River at Valley City.

* WHEN...From this evening until further notice.

* IMPACTS...At 14.0 feet, The road to Norbut Fish and Wildlife area
  is flooded.

* ADDITIONAL DETAILS...
  - At 10:30 PM CDT Monday the stage was 14.3 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 10:30 PM CDT Monday was 14.3 feet.
  - Forecast...The river will fall to 14.2 feet just after midnight
    tonight. It will then rise to 14.3 feet early tomorrow afternoon.
    It will fall to 14.1 feet Wednesday evening. It will then rise to
    14.9 feet Saturday evening. It will fall again but remain above
    flood stage.
  - Flood stage is 14.0 feet.



&&


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

Illinois River
 Valley City  14.0    14.3    14.1  14.3  14.8  14.9  14.8



&&

LAT...LON 3977 9067 3977 9053 3969 9056 3962 9052
      3952 9051 3952 9059 3964 9062 3965 9066
      3967 9065


$$

ILC083-MOC183-291545-
/O.EXT.KLSX.FL.W.0034.000000T0000Z-260505T1500Z/
/GRFI2.1.ER.260420T0010Z.260430T0600Z.260504T0900Z.NO/
1041 PM CDT Mon Apr 27 2026

...FLOOD WARNING NOW IN EFFECT UNTIL TUESDAY, MAY 05...

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

* WHERE...Mississippi River at Grafton.

* WHEN...Until Tuesday, May 05.

* IMPACTS...At 22.5 feet, East end of Main Street in Portage des
  Sioux begins flooding near this height.

* ADDITIONAL DETAILS...
  - At 10:30 PM CDT Monday the stage was 21.0 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 10:30 PM CDT Monday was 21.0 feet.
  - Forecast...The river is expected to rise to a crest of 22.4 feet
    early Thursday morning. It will then fall below flood stage
    Monday, May 04.
  - Flood stage is 20.0 feet.



&&


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

Mississippi River
 Grafton         20.0    21.0    21.9  22.4  22.1  21.4  20.7



&&

LAT...LON 3880 9057 3888 9057 3897 9055 3898 9042
      3895 9028 3891 9033


$$

ILC001-MOC111-291545-
/O.EXT.KLSX.FL.W.0026.000000T0000Z-260502T2100Z/
/CANM7.1.ER.260418T0926Z.260428T1200Z.260501T1500Z.NO/
1041 PM CDT Mon Apr 27 2026

...FLOOD WARNING NOW IN EFFECT UNTIL SATURDAY AFTERNOON...

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

* WHERE...Mississippi River at Canton.

* WHEN...Until Saturday afternoon.

* IMPACTS...At 16.6 feet, Front Street leading to the campground and
  Corps park campgrounds flood at this height.

* ADDITIONAL DETAILS...
  - At 8:00 PM CDT Monday the stage was 15.9 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 8:00 PM CDT Monday was 15.9 feet.
  - Forecast...The river is expected to rise to a crest of 16.1 feet
    tomorrow morning. It will then fall below flood stage late Friday
    morning.
  - Flood stage is 15.0 feet.



&&


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

Mississippi River
 Canton          15.0    15.9    16.0  15.6  15.1  14.4  13.7



&&

LAT...LON 4022 9154 4022 9142 4008 9139 4008 9153


$$

ILC149-MOC173-291545-
/O.EXT.KLSX.FL.W.0024.000000T0000Z-260504T1000Z/
/SVRM7.1.ER.260415T0220Z.260429T0600Z.260503T0400Z.NO/
1041 PM CDT Mon Apr 27 2026

...FLOOD WARNING NOW IN EFFECT UNTIL LATE SUNDAY NIGHT...

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

* WHERE...Mississippi River at Saverton.

* WHEN...Until late Sunday night.

* ADDITIONAL DETAILS...
  - At 10:00 PM CDT Monday the stage was 18.0 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 10:00 PM CDT Monday was 18.0 feet.
  - Forecast...The river is expected to rise to a crest of 18.8 feet
    early Wednesday morning. It will then fall below flood stage late
    Saturday evening.
  - Flood stage is 16.0 feet.



&&


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

Mississippi River
 Saverton        16.0    18.0    18.8  18.2  17.5  16.6  15.7



&&

LAT...LON 3967 9132 3974 9121 3970 9114 3953 9099
      3946 9110 3960 9122


$$

ILC013-MOC163-291545-
/O.EXT.KLSX.FL.W.0021.000000T0000Z-260505T1600Z/
/CLKM7.1.ER.260409T1800Z.260429T1200Z.260504T1000Z.NO/
1041 PM CDT Mon Apr 27 2026

...FLOOD WARNING NOW IN EFFECT UNTIL TUESDAY, MAY 05...

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

* WHERE...Mississippi River at Clarksville.

* WHEN...Until Tuesday, May 05.

* IMPACTS...At 30.0 feet, East bank (Illinois side) begins to flood.

* ADDITIONAL DETAILS...
  - At 10:30 PM CDT Monday the stage was 28.7 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 10:30 PM CDT Monday was 28.7 feet.
  - Forecast...The river is expected to rise to a crest of 29.6 feet
    Wednesday morning. It will then fall below flood stage Monday,
    May 04.
  - Flood stage is 25.0 feet.



&&


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

Mississippi River
 Clarksville     25.0    28.7    29.6  29.0  28.0  26.9  25.9



&&

LAT...LON 3939 9097 3946 9088 3940 9081 3932 9075
      3925 9071 3925 9083 3930 9090 3932 9088
      3936 9092 3935 9095


$$

ILC149-MOC163-291545-
/O.EXT.KLSX.FL.W.0020.000000T0000Z-260505T2100Z/
/LUSM7.1.ER.260409T1626Z.260429T0600Z.260504T1500Z.NO/
1041 PM CDT Mon Apr 27 2026

...FLOOD WARNING NOW IN EFFECT UNTIL TUESDAY, MAY 05...

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

* WHERE...Mississippi River at Louisiana.

* WHEN...Until Tuesday, May 05.

* IMPACTS...At 19.6 feet, Maryland Street at 4th Street by the Town
  Branch bridge begins flooding near this height.

* ADDITIONAL DETAILS...
  - At 10:30 PM CDT Monday the stage was 18.4 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 10:30 PM CDT Monday was 18.4 feet.
  - Forecast...The river is expected to rise to a crest of 19.2 feet
    early Wednesday morning. It will then fall below flood stage
    Monday, May 04.
  - Flood stage is 15.0 feet.



&&


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

Mississippi River
 Louisiana       15.0    18.4    19.2  18.6  17.8  16.8  15.9



&&

LAT...LON 3946 9110 3953 9099 3946 9088 3939 9097
      3941 9100 3939 9103


$$

ILC051-291545-
/O.EXT.KLSX.FL.W.0042.260428T0527Z-260502T1800Z/
/VNDI2.3.ER.260428T0527Z.260429T1800Z.260501T1200Z.NO/
1041 PM CDT Mon Apr 27 2026

...FLOOD WARNING NOW IN EFFECT UNTIL SATURDAY AFTERNOON...

* WHAT...Major flooding is forecast.

* WHERE...Kaskaskia River at Vandalia.

* WHEN...Until Saturday afternoon.

* IMPACTS...At 26.0 feet, The Dively and Vandalia Levees begin to be
  overtopped.

* ADDITIONAL DETAILS...
  - At 10:00 PM CDT Monday the stage was 16.6 feet.
  - Forecast...The river is expected to rise above flood stage just
    after midnight tonight to a crest of 26.0 feet early Wednesday
    afternoon. It will then fall below flood stage Friday morning.
  - Flood stage is 18.0 feet.
  - Flood History...This crest compares to a previous crest of 26.0
    feet on 04/21/1970.



&&


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

Kaskaskia River
 Vandalia      18.0    16.6    25.7  24.6  18.0  10.2  7.4



&&

LAT...LON 3903 8910 3903 8906 3889 8908 3881 8916
      3883 8922


$$

MOC027-151-291545-
/O.EXT.KLSX.FL.W.0047.260429T0000Z-260503T0508Z/
/CMSM7.1.ER.260429T0000Z.260430T1200Z.260501T1708Z.NO/
1041 PM CDT Mon Apr 27 2026

...FLOOD WARNING NOW IN EFFECT FROM TUESDAY EVENING TO LATE SATURDAY
NIGHT...

* WHAT...Minor flooding is forecast.

* WHERE...Missouri River near Chamois.

* WHEN...From Tuesday evening to late Saturday night.

* ADDITIONAL DETAILS...
  - There is no current observed data.
  - Forecast...The river is expected to rise above flood stage
    tomorrow evening to a crest of 19.4 feet Thursday morning. It
    will then fall below flood stage early Friday afternoon.
  - Flood stage is 17.0 feet.



&&


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

Missouri River
 Chamois      17.0    MSG     18.0  19.4  17.6  14.5  MSG



&&

LAT...LON 3864 9198 3871 9185 3873 9160 3865 9160
      3864 9181 3858 9194


$$

ILC077-157-MOC157-186-291545-
/O.EXT.KLSX.FL.W.0040.260429T0215Z-000000T0000Z/
/CHSI2.1.ER.260429T0215Z.260502T1200Z.000000T0000Z.NO/
1041 PM CDT Mon Apr 27 2026

...FLOOD WARNING NOW IN EFFECT FROM TUESDAY EVENING UNTIL FURTHER
NOTICE...

* WHAT...Minor flooding is forecast.

* WHERE...Mississippi River at Chester.

* WHEN...From Tuesday evening until further notice.

* IMPACTS...At 34.7 feet, The north parking lot at Menard
  Correctional Center begins flooding.

* ADDITIONAL DETAILS...
  - At 10:30 PM CDT Monday the stage was 25.1 feet.
  - Forecast...The river is expected to rise above flood stage late
    tomorrow evening and continue rising to a crest of 34.2 feet
    Saturday morning.
  - Flood stage is 27.0 feet.



&&


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

Mississippi River
 Chester         27.0    25.1    28.3  30.9  33.0  34.2  33.4



&&

LAT...LON 3799 8992 3790 8977 3786 8973 3776 8945
      3769 8941 3769 8959 3786 8995 3795 9005


$$

MOC073-139-291545-
/O.EXT.KLSX.FL.W.0048.260429T0234Z-260502T2125Z/
/HRNM7.1.ER.260429T0234Z.260430T1200Z.260501T1525Z.NO/
1041 PM CDT Mon Apr 27 2026

...FLOOD WARNING NOW IN EFFECT FROM TUESDAY EVENING TO SATURDAY
AFTERNOON...

* WHAT...Minor flooding is forecast.

* WHERE...Missouri River at Hermann.

* WHEN...From Tuesday evening to Saturday afternoon.

* IMPACTS...At 22.3 feet, Southern portions of Old Rock Road and
  Twisters Road south of Rhineland begin flooding near this height.

* ADDITIONAL DETAILS...
  - At 9:30 PM CDT Monday the stage was 15.8 feet.
  - Forecast...The river is expected to rise above flood stage late
    tomorrow evening to a crest of 22.9 feet Thursday morning. It
    will then fall below flood stage late Friday morning.
  - Flood stage is 21.0 feet.



&&


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

Missouri River
 Hermann      21.0    15.8    21.8  22.9  21.4  18.1  14.6



&&

LAT...LON 3873 9160 3875 9136 3866 9119 3859 9119
      3867 9144 3865 9160


$$

MOC099-189-291545-
/O.EXT.KLSX.FL.W.0039.260429T1115Z-000000T0000Z/
/ARNM7.1.ER.260429T1115Z.260502T0000Z.000000T0000Z.NO/
1041 PM CDT Mon Apr 27 2026

...FLOOD WARNING NOW IN EFFECT FROM WEDNESDAY MORNING UNTIL FURTHER
NOTICE...

* WHAT...Minor flooding is forecast.

* WHERE...Meramec River near Arnold.

* WHEN...From Wednesday morning until further notice.

* IMPACTS...At 30.0 feet, Wells Road below Suson Woods begins
  flooding at this height.

* ADDITIONAL DETAILS...
  - At 10:00 PM CDT Monday the stage was 20.9 feet.
  - Forecast...The river is expected to rise above flood stage
    Wednesday morning and continue rising to a crest of 29.0 feet
    Friday evening.
  - Flood stage is 24.0 feet.



&&


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

Meramec River
 Arnold       24.0    20.9    24.1  27.1  28.6  28.8  26.5



&&

LAT...LON 3847 9044 3847 9032 3840 9033 3837 9036
      3841 9036 3842 9037 3843 9036 3845 9036
      3845 9041


$$

ILC001-MOC127-291545-
/O.CON.KLSX.FL.W.0050.000000T0000Z-260501T0000Z/
/QLDI2.1.ER.260428T0125Z.260428T1200Z.260429T1800Z.NO/
1041 PM CDT Mon Apr 27 2026

...FLOOD WARNING REMAINS IN EFFECT UNTIL THURSDAY EVENING...

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

* WHERE...Mississippi River at Lock & Dam 21.

* WHEN...Until Thursday evening.

* ADDITIONAL DETAILS...
  - At 10:00 PM CDT Monday the stage was 18.2 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 10:00 PM CDT Monday was 18.2 feet.
  - Forecast...The river is expected to rise to a crest of 18.5 feet
    tomorrow morning. It will then fall below flood stage early
    Wednesday afternoon.
  - Flood stage is 18.0 feet.



&&


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

Mississippi River
 Lock & Dam 21   18.0    18.2    18.1  17.5  16.8  15.8  15.2



&&

LAT...LON 3991 9153 3991 9140 3983 9135 3983 9148


$$

ILC013-061-083-291545-
/O.CON.KLSX.FL.W.0025.000000T0000Z-000000T0000Z/
/HARI2.1.ER.260418T2200Z.260501T0600Z.000000T0000Z.NO/
1041 PM CDT Mon Apr 27 2026

...FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE...

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

* WHERE...Illinois River at Hardin.

* WHEN...Until further notice.

* ADDITIONAL DETAILS...
  - At 10:30 PM CDT Monday the stage was 26.9 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 10:30 PM CDT Monday was 26.9 feet.
  - Forecast...The river is expected to rise to a crest of 27.4 feet
    early Friday morning.
  - Flood stage is 25.0 feet.



&&


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

Illinois River
 Hardin       25.0    26.9    26.9  27.2  27.4  27.4  27.2



&&

LAT...LON 3952 9064 3952 9052 3942 9054 3935 9051
      3931 9053 3898 9052 3897 9049 3890 9054
      3898 9062 3923 9065


$$

ILC013-MOC113-291545-
/O.CON.KLSX.FL.W.0023.000000T0000Z-260505T1800Z/
/CAGM7.1.ER.260415T1236Z.260430T0000Z.260504T1200Z.NO/
1041 PM CDT Mon Apr 27 2026

...FLOOD WARNING REMAINS IN EFFECT UNTIL TUESDAY, MAY 05...

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

* WHERE...Mississippi River at Winfield.

* WHEN...Until Tuesday, May 05.

* IMPACTS...At 29.5 feet, Highway B in eastern St. Charles County
  floods near the Dardenne Creek bridge.

* ADDITIONAL DETAILS...
  - At 10:30 PM CDT Monday the stage was 28.7 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 10:30 PM CDT Monday was 28.7 feet.
  - Forecast...The river is expected to rise to a crest of 29.6 feet
    Wednesday evening. It will then fall below flood stage Monday,
    May 04.
  - 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
 Winfield        26.0    28.7    29.4  29.6  29.0  28.0  27.0



&&

LAT...LON 3925 9083 3925 9071 3912 9065 3896 9065
      3888 9057 3880 9057 3885 9073 3910 9076


$$

ILC149-MOC127-291545-
/O.CON.KLSX.FL.W.0022.000000T0000Z-260505T0000Z/
/HNNM7.1.ER.260413T1415Z.260429T0000Z.260503T1800Z.NO/
1041 PM CDT Mon Apr 27 2026

...FLOOD WARNING REMAINS IN EFFECT UNTIL MONDAY EVENING...

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

* WHERE...Mississippi River at Hannibal.

* WHEN...Until Monday evening.

* IMPACTS...At 20.2 feet, Nipper Park begins flooding on the Hannibal
  riverfront.

* ADDITIONAL DETAILS...
  - At 10:15 PM CDT Monday the stage was 19.6 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 10:15 PM CDT Monday was 19.6 feet.
  - Forecast...The river is expected to rise to a crest of 20.1 feet
    tomorrow evening. It will then fall below flood stage early
    Sunday afternoon.
  - Flood stage is 17.0 feet.



&&


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

Mississippi River
 Hannibal        17.0    19.6    20.1  19.5  18.7  17.9  17.2



&&

LAT...LON 3983 9148 3983 9135 3974 9121 3967 9132
      3969 9134 3968 9139 3971 9136


$$

ILC001-MOC127-291545-
/O.CON.KLSX.FL.W.0051.260428T1800Z-260430T1200Z/
/UINI2.1.ER.260428T1800Z.260428T1800Z.260429T0600Z.NO/
1041 PM CDT Mon Apr 27 2026

...FLOOD WARNING REMAINS IN EFFECT FROM TUESDAY AFTERNOON TO THURSDAY
MORNING...

* WHAT...Minor flooding is forecast.

* WHERE...Mississippi River at Quincy.

* WHEN...From Tuesday afternoon to Thursday morning.

* IMPACTS...At 18.5 feet, BNSF Railroad main line, 10 to 16 miles
  above Quincy begins to flood at several locations.

* ADDITIONAL DETAILS...
  - At 9:15 PM CDT Monday the stage was 18.7 feet.
  - Forecast...The river is expected to rise to a crest of 19.0 feet
    early tomorrow afternoon. It will then fall below flood stage
    early Wednesday morning.
  - Flood stage is 19.0 feet.



&&


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

Mississippi River
 Quincy          19.0    18.7    18.9  18.6  17.9  16.9  16.4



&&

LAT...LON 3999 9153 3999 9140 3991 9140 3991 9153


$$

Elmore

458 
WGUS83 KLSX 281732
FLSLSX

Flood Statement
National Weather Service St Louis MO
1232 PM CDT Tue Apr 28 2026

...The Flood Warning is extended for the following rivers in
Missouri...

  Missouri River near Chamois.

  Missouri River at Hermann.

River forecasts are based on observed precipitation and forecast
precipitation for the next 24 hours.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not attempt to drive around barricades or drive cars
through flooded areas.

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

This product, along with additional weather and stream information,
is available at https://water.noaa.gov/wfo/lsx

&&

MOC027-151-300545-
/O.EXT.KLSX.FL.W.0047.260429T1000Z-260503T1100Z/
/CMSM7.1.ER.260429T1000Z.260430T1800Z.260501T2300Z.NO/
1232 PM CDT Tue Apr 28 2026

...FLOOD WARNING NOW IN EFFECT FROM LATE TONIGHT TO SUNDAY MORNING...

* WHAT...Minor flooding is forecast.

* WHERE...Missouri River near Chamois.

* WHEN...From late tonight to Sunday morning.

* IMPACTS...At 17.0 feet, Flood Stage:  Lower lying bottom land
  begins to flood.

* ADDITIONAL DETAILS...
  - There is no current observed data.
  - Forecast...The river is expected to rise above flood stage late
    tonight to a crest of 18.4 feet early Thursday afternoon. It will
    then fall below flood stage Friday evening.
  - Flood stage is 17.0 feet.



&&


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

Missouri River
 Chamois      17.0    MSG     17.1  18.1  17.9  15.4  11.7



&&

LAT...LON 3864 9198 3871 9185 3873 9160 3865 9160
      3864 9181 3858 9194


$$

MOC073-139-300545-
/O.EXT.KLSX.FL.W.0048.260429T1200Z-260503T0200Z/
/HRNM7.1.ER.260429T1200Z.260501T0000Z.260501T2000Z.NO/
1232 PM CDT Tue Apr 28 2026

...FLOOD WARNING NOW IN EFFECT FROM WEDNESDAY MORNING TO SATURDAY
EVENING...

* WHAT...Minor flooding is forecast.

* WHERE...Missouri River at Hermann.

* WHEN...From Wednesday morning to Saturday evening.

* IMPACTS...At 22.3 feet, Southern portions of Old Rock Road and
  Twisters Road south of Rhineland begin flooding near this height.

* ADDITIONAL DETAILS...
  - At 11:30 AM CDT Tuesday the stage was 18.9 feet.
  - Forecast...The river is expected to rise above flood stage
    tomorrow morning to a crest of 22.0 feet Thursday evening. It
    will then fall below flood stage Friday afternoon.
  - Flood stage is 21.0 feet.



&&


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

Missouri River
 Hermann      21.0    18.9    21.0  21.7  21.6  19.0  15.5



&&

LAT...LON 3873 9160 3875 9136 3866 9119 3859 9119
      3867 9144 3865 9160


$$

Fuchs

409 
WGUS83 KLSX 290131
FLSLSX

Flood Statement
National Weather Service St Louis MO
831 PM CDT Tue Apr 28 2026

...The Flood Warning continues for the following rivers in
Missouri...

  Missouri River at Hermann.

  Missouri River near Chamois.

River forecasts are based on observed precipitation and forecast
precipitation for the next 24 hours.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not attempt to drive around barricades or drive cars
through flooded areas.

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

This product, along with additional weather and stream information,
is available at https://water.noaa.gov/wfo/lsx

&&

MOC073-139-301345-
/O.EXT.KLSX.FL.W.0048.260429T1630Z-260502T2200Z/
/HRNM7.1.ER.260429T1630Z.260430T1800Z.260501T1600Z.NO/
831 PM CDT Tue Apr 28 2026

...FLOOD WARNING NOW IN EFFECT FROM WEDNESDAY MORNING TO SATURDAY
AFTERNOON...

* WHAT...Minor flooding is forecast.

* WHERE...Missouri River at Hermann.

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

* IMPACTS...At 21.3 feet, The southern end of School House Road south
  of Rhineland begins flooding near this height.

* ADDITIONAL DETAILS...
  - At 7:30 PM CDT Tuesday the stage was 19.7 feet.
  - Forecast...The river is expected to rise above flood stage late
    tomorrow morning to a crest of 22.0 feet early Thursday
    afternoon. It will then fall below flood stage late Friday
    morning.
  - Flood stage is 21.0 feet.



&&


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

Missouri River
 Hermann      21.0    19.7    21.9  21.4  18.4  15.3  12.4



&&

LAT...LON 3873 9160 3875 9136 3866 9119 3859 9119
      3867 9144 3865 9160


$$

MOC027-151-301345-
/O.EXT.KLSX.FL.W.0047.260429T2248Z-260502T2230Z/
/CMSM7.1.ER.260429T2248Z.260430T1200Z.260501T1030Z.NO/
831 PM CDT Tue Apr 28 2026

...FLOOD WARNING NOW IN EFFECT FROM WEDNESDAY AFTERNOON TO SATURDAY
AFTERNOON...

* WHAT...Minor flooding is forecast.

* WHERE...Missouri River near Chamois.

* WHEN...From Wednesday afternoon to Saturday afternoon.

* IMPACTS...At 17.0 feet, Flood Stage:  Lower lying bottom land
  begins to flood.

* ADDITIONAL DETAILS...
  - At 1:30 PM CDT Tuesday the stage was 14.9 feet.
  - Forecast...The river is expected to rise above flood stage
    tomorrow afternoon to a crest of 17.7 feet Thursday morning. It
    will then fall below flood stage early Friday morning.
  - Flood stage is 17.0 feet.



&&


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

Missouri River
 Chamois      17.0    14.9    17.7  16.9  13.6  10.1  MSG



&&

LAT...LON 3864 9198 3871 9185 3873 9160 3865 9160
      3864 9181 3858 9194


$$

Jaja

724 
WGUS83 KLSX 291729
FLSLSX

Flood Statement
National Weather Service St Louis MO
1229 PM CDT Wed Apr 29 2026

...The Flood Warning is extended for the following rivers in
Missouri...

  Missouri River at Hermann.

River forecasts are based on observed precipitation and forecast
precipitation for the next 24 hours.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not attempt to drive around barricades or drive cars
through flooded areas.

This product, along with additional weather and stream information,
is available at https://water.noaa.gov/wfo/lsx

&&

MOC073-139-010530-
/O.EXT.KLSX.FL.W.0048.000000T0000Z-260502T2230Z/
/HRNM7.1.ER.260429T1318Z.260430T0600Z.260501T1630Z.NO/
1229 PM CDT Wed Apr 29 2026

...FLOOD WARNING NOW IN EFFECT UNTIL SATURDAY AFTERNOON...

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

* WHERE...Missouri River at Hermann.

* WHEN...Until Saturday afternoon.

* IMPACTS...At 21.3 feet, The southern end of School House Road south
  of Rhineland begins flooding near this height.

* ADDITIONAL DETAILS...
  - At 11:30 AM CDT Wednesday the stage was 21.3 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 11:30 AM CDT Wednesday was 21.3 feet.
  - Forecast...The river is expected to rise to a crest of 21.8 feet
    just after midnight tonight. It will then fall below flood stage
    late Friday morning.
  - Flood stage is 21.0 feet.



&&


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

Missouri River
 Hermann      21.0    21.3    21.8  21.3  18.8  14.8  12.1



&&

LAT...LON 3873 9160 3875 9136 3866 9119 3859 9119
      3867 9144 3865 9160


$$

19

486 
WGUS83 KLSX 300116
FLSLSX

Flood Statement
National Weather Service St Louis MO
816 PM CDT Wed Apr 29 2026

...The Flood Warning continues for the following rivers in
Missouri...

  Missouri River at Hermann.

  Missouri River near Chamois.

River forecasts are based on observed precipitation and forecast
precipitation for the next 24 hours.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not attempt to drive around barricades or drive cars
through flooded areas.

This product, along with additional weather and stream information,
is available at https://water.noaa.gov/wfo/lsx

&&

MOC073-139-011330-
/O.EXT.KLSX.FL.W.0048.000000T0000Z-260502T1800Z/
/HRNM7.1.ER.260429T1318Z.260430T1200Z.260501T1200Z.NO/
816 PM CDT Wed Apr 29 2026

...FLOOD WARNING NOW IN EFFECT UNTIL SATURDAY AFTERNOON...

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

* WHERE...Missouri River at Hermann.

* WHEN...Until Saturday afternoon.

* IMPACTS...At 22.3 feet, Southern portions of Old Rock Road and
  Twisters Road south of Rhineland begin flooding near this height.

* ADDITIONAL DETAILS...
  - At 7:30 PM CDT Wednesday the stage was 21.9 feet and nearing a
    crest.
  - Recent Activity...The river first rose above flood stage on April
    29.
  - Forecast...The river is expected to rise to a crest of 22.1 feet
    tomorrow morning. It will then fall below flood stage Friday
    morning.
  - Flood stage is 21.0 feet.



&&


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

Missouri River
 Hermann      21.0    21.9    21.0  18.3  14.7  12.3  11.5



&&

LAT...LON 3873 9160 3875 9136 3866 9119 3859 9119
      3867 9144 3865 9160


$$

MOC027-151-011330-
/O.EXT.KLSX.FL.W.0047.000000T0000Z-260502T1200Z/
/CMSM7.1.ER.260430T0019Z.260430T0600Z.260501T0000Z.NO/
816 PM CDT Wed Apr 29 2026

...FLOOD WARNING NOW IN EFFECT UNTIL SATURDAY MORNING...

* WHAT...Minor flooding is forecast.

* WHERE...Missouri River near Chamois.

* WHEN...Until Saturday morning.

* IMPACTS...At 17.0 feet, Flood Stage:  Lower lying bottom land
  begins to flood.

* ADDITIONAL DETAILS...
  - The last observed stage was at 1:30 PM CDT Tuesday, April 28 when
    the stage was 14.9 feet and rising.
  - Forecast...The river is expected to rise to a crest of 17.4 feet
    just after midnight tonight. It will then fall below flood stage
    tomorrow evening.
  - Flood stage is 17.0 feet.



&&


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

Missouri River
 Chamois      17.0    14.9    16.5  13.8  10.4  8.2   MSG



&&

LAT...LON 3864 9198 3871 9185 3873 9160 3865 9160
      3864 9181 3858 9194


$$

Kimble

750 
WGUS83 KLSX 301626
FLSLSX

Flood Statement
National Weather Service St Louis MO
1126 AM CDT Thu Apr 30 2026

...The Flood Warning is extended for the following rivers in
Missouri...

  Missouri River at St. Charles.

...The Flood Warning continues for the following rivers in
Missouri...

  Missouri River at Hermann.

  Missouri River near Chamois.

River forecasts are based on observed precipitation and forecast
precipitation for the next 24 hours.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not attempt to drive around barricades or drive cars
through flooded areas.

This product, along with additional weather and stream information,
is available at https://water.noaa.gov/wfo/lsx

&&

MOC183-189-020430-
/O.EXT.KLSX.FL.W.0059.000000T0000Z-260502T2000Z/
/SCLM7.1.ER.260430T1307Z.260501T0000Z.260501T1400Z.NO/
1126 AM CDT Thu Apr 30 2026

...FLOOD WARNING NOW IN EFFECT UNTIL SATURDAY AFTERNOON...

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

* WHERE...Missouri River at St. Charles.

* WHEN...Until Saturday afternoon.

* IMPACTS...At 25.0 feet, Downstream near this stage, Missouri Route
  H at Island Road and agricultural bottomland may begin flooding,
  depending on Mississippi River flow and backwater.

* ADDITIONAL DETAILS...
  - At 11:00 AM CDT Thursday the stage was 25.2 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 11:00 AM CDT Thursday was 25.2 feet.
  - Forecast...The river is expected to rise to a crest of 25.3 feet
    this evening. It will then fall below flood stage late tomorrow
    morning.
  - Flood stage is 25.0 feet.



&&


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

Missouri River
 St. Charles  25.0    25.2    25.1  22.9  20.0  17.8  16.4



&&

LAT...LON 3892 9036 3884 9013 3878 9016 3883 9031
      3869 9045 3860 9069 3867 9076


$$

MOC073-139-020430-
/O.EXT.KLSX.FL.W.0048.000000T0000Z-260502T1342Z/
/HRNM7.1.ER.260429T1318Z.260430T0915Z.260501T0742Z.NO/
1126 AM CDT Thu Apr 30 2026

...FLOOD WARNING NOW IN EFFECT UNTIL SATURDAY MORNING...

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

* WHERE...Missouri River at Hermann.

* WHEN...Until Saturday morning.

* IMPACTS...At 22.3 feet, Southern portions of Old Rock Road and
  Twisters Road south of Rhineland begin flooding near this height.

* ADDITIONAL DETAILS...
  - At 10:30 AM CDT Thursday the stage was 22.0 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 10:30 AM CDT Thursday was 22.2 feet.
  - Forecast...The river is expected to fall below flood stage just
    after midnight tonight and continue falling to 10.4 feet
    Thursday, May 07.
  - Flood stage is 21.0 feet.



&&


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

Missouri River
 Hermann      21.0    22.0    20.5  17.4  14.4  12.3  11.5



&&

LAT...LON 3873 9160 3875 9136 3866 9119 3859 9119
      3867 9144 3865 9160


$$

MOC027-151-020430-
/O.CON.KLSX.FL.W.0047.000000T0000Z-260502T1200Z/
/CMSM7.1.ER.260430T0019Z.260430T1800Z.260501T0000Z.NO/
1126 AM CDT Thu Apr 30 2026

...FLOOD WARNING REMAINS IN EFFECT UNTIL SATURDAY MORNING...

* WHAT...Minor flooding is forecast.

* WHERE...Missouri River near Chamois.

* WHEN...Until Saturday morning.

* IMPACTS...At 17.0 feet, Flood Stage:  Lower lying bottom land
  begins to flood.

* ADDITIONAL DETAILS...
  - At 1:30 PM CDT Tuesday, April 28 the stage was 14.9 feet.
  - Forecast...The river is expected to rise to a crest of 17.4 feet
    this afternoon. It will then fall below flood stage this evening.
  - Flood stage is 17.0 feet.



&&


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

Missouri River
 Chamois      17.0    14.9    16.0  12.9  10.2  8.2   7.5



&&

LAT...LON 3864 9198 3871 9185 3873 9160 3865 9160
      3864 9181 3858 9194


$$

BRC

013 
WGUS83 KLSX 010214
FLSLSX

Flood Statement
National Weather Service St Louis MO
914 PM CDT Thu Apr 30 2026

...The Flood Warning continues for the following rivers in
Missouri...

  Missouri River at St. Charles.

  Missouri River at Hermann.

...The Flood Warning is extended for the following rivers in
Missouri...

  Missouri River near Chamois.

River forecasts are based on observed precipitation and forecast
precipitation for the next 24 hours.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not attempt to drive around barricades or drive cars
through flooded areas.

This product, along with additional weather and stream information,
is available at https://water.noaa.gov/wfo/lsx

&&

MOC183-189-021400-
/O.EXT.KLSX.FL.W.0059.000000T0000Z-260502T1400Z/
/SCLM7.1.ER.260430T1307Z.260430T2100Z.260501T0800Z.NO/
914 PM CDT Thu Apr 30 2026

...FLOOD WARNING NOW IN EFFECT UNTIL SATURDAY MORNING...

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

* WHERE...Missouri River at St. Charles.

* WHEN...Until Saturday morning.

* IMPACTS...At 25.0 feet, Downstream near this stage, Missouri Route
  H at Island Road and agricultural bottomland may begin flooding,
  depending on Mississippi River flow and backwater.

* ADDITIONAL DETAILS...
  - At 9:00 PM CDT Thursday the stage was 25.1 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 9:00 PM CDT Thursday was 25.2 feet.
  - Forecast...The river is expected to fall below flood stage late
    tonight and continue falling to 16.2 feet Tuesday evening.
  - Flood stage is 25.0 feet.



&&


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

Missouri River
 St. Charles  25.0    25.1    22.4  19.9  17.9  16.5  MSG



&&

LAT...LON 3892 9036 3884 9013 3878 9016 3883 9031
      3869 9045 3860 9069 3867 9076


$$

MOC073-139-021200-
/O.EXT.KLSX.FL.W.0048.000000T0000Z-260502T1200Z/
/HRNM7.1.ER.260429T1318Z.260430T0915Z.260501T0600Z.NO/
914 PM CDT Thu Apr 30 2026

...FLOOD WARNING NOW IN EFFECT UNTIL SATURDAY MORNING...

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

* WHERE...Missouri River at Hermann.

* WHEN...Until Saturday morning.

* IMPACTS...At 21.3 feet, The southern end of School House Road south
  of Rhineland begins flooding near this height.

* ADDITIONAL DETAILS...
  - At 8:30 PM CDT Thursday the stage was 21.4 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 8:30 PM CDT Thursday was 22.2 feet.
  - Forecast...The river is expected to fall below flood stage just
    after midnight tonight and continue falling to 10.3 feet
    Thursday, May 07.
  - Flood stage is 21.0 feet.



&&


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

Missouri River
 Hermann      21.0    21.4    17.3  14.3  12.4  11.6  10.9



&&

LAT...LON 3873 9160 3875 9136 3866 9119 3859 9119
      3867 9144 3865 9160


$$

MOC027-151-021415-
/O.EXT.KLSX.FL.W.0047.000000T0000Z-260502T2100Z/
/CMSM7.1.ER.260430T0019Z.260430T1400Z.260501T0900Z.NO/
914 PM CDT Thu Apr 30 2026

...FLOOD WARNING NOW IN EFFECT UNTIL SATURDAY AFTERNOON...

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

* WHERE...Missouri River near Chamois.

* WHEN...Until Saturday afternoon.

* IMPACTS...At 17.0 feet, Flood Stage:  Lower lying bottom land
  begins to flood.

* ADDITIONAL DETAILS...
  - At 9:00 AM CDT Thursday the stage was 18.5 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 9:00 AM CDT Thursday was 18.5 feet. The most recent stage at
    9:00 PM CDT was estimated to be near 17.7 feet.
  - Forecast...The river is expected to fall below flood stage late
    tonight and continue falling to 7.3 feet Tuesday evening.
  - Flood stage is 17.0 feet.



&&


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

Missouri River
 Chamois      17.0    17.7E   13.5  10.5  8.5   7.7

E= Estimated Stage


&&

LAT...LON 3864 9198 3871 9185 3873 9160 3865 9160
      3864 9181 3858 9194


$$

Maples

289 
WGUS83 KLSX 010933
FLSLSX

Flood Statement
National Weather Service St Louis MO
433 AM CDT Fri May 1 2026

...The Flood Warning is cancelled for the following rivers in
Missouri...

  Missouri River at Hermann.

River forecasts are based on observed precipitation and forecast
precipitation for the next 24 hours.

MOC073-139-011045-
/O.CAN.KLSX.FL.W.0048.000000T0000Z-260501T0933Z/
/HRNM7.1.ER.260429T1318Z.260430T0915Z.260501T0530Z.NO/
433 AM CDT Fri May 1 2026

...FLOOD WARNING IS CANCELLED...

The Flood Warning is cancelled for
  the Missouri River at Hermann.

* ADDITIONAL DETAILS...
  - At 3:30 AM CDT Friday the stage was 20.7 feet.
  - Forecast...The river is expected to fall to 10.3 feet Thursday
    evening.



&&


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

Missouri River
 Hermann      21.0    20.7    17.3  14.3  12.4  11.6  10.9



&&

LAT...LON 3873 9160 3875 9136 3866 9119 3859 9119
      3867 9144 3865 9160


$$

Elmore

Area Forecast Discussion...Updated Aviation
National Weather Service Saint Louis MO
647 AM CDT Mon Apr 27 2026

.KEY MESSAGES...

- While periods of storms are expected through Monday morning, the most
  potent thunderstorms will occur this afternoon and evening.

- Thunderstorms this afternoon and evening will be capable of
  damaging wind gusts, large hail, and strong tornadoes.

- A period of cool, calm weather is expected mid-week through the
  weekend.

&&

.SHORT TERM... (Through Tuesday Night)
Issued at 155 AM CDT Mon Apr 27 2026

Storms across southeastern Missouri continue to butt up against an
instability gradient draped from north to south across Missouri.
The warm air advection feeding these storms will also push greater
instability slowly northeastward through this morning, though
propagation vectors will favor convection continuing to move east-
southeastward generally away from the CWA or into an unfavorable
environment. Additionally, the low-level jet refocusing across
Kansas will continue to support the downward trend in convection
across southeastern Missouri early this morning. Any linger storms
over the next couple of hours will be capable mainly of large hail,
though there is also a very low damaging wind and tornado threat for
storms that remain surface based.

Our attention turns to the storms over eastern Kansas that are
propagating eastward with the nose of the low-level jet. With the
nose of this low-level jet edging into northeastern Missouri later
this morning, the focus for these storms will spread into portions
of the CWA north of I-70. Vertical thermal profiles suggest that this
convection will be elevated, mitigating a threat of damaging wind
gusts and/or tornadoes. However, with around 40 kts of effective
shear and building MUCAPE, there is a low chance for isolated
instances of large hail.

How long this convection lingers is uncertain, although guidance
trends have been toward a lull in convective activity in the wake of
this convection and that associated with a cold front during the
late afternoon and evening. Ahead of the front, the warm sector
remains capped through much of the afternoon per a majority of
deterministic soundings. Although, any remnant outflow or
differential heating boundary from early day convection may serve as
enough of a forcing mechanism to spawn discrete convection during
the afternoon as lift from an approaching shortwave increases over
the region. If this convection does form, it will be in an
environment characterized by 2,000-2,500 J/kg of SBCAPE and roughly
50 kts of deep-layer shear. This will favor supercells capable of
all hazards, with long curved hodographs favoring strong tornadoes,
especially if storms are able to latch on to any remnant boundaries
across the CWA.

Where the environment isn't contaminated from earlier rounds of
convection, additional updrafts are expected along the cold front as
it enters the area 4-5pm. Forcing from the front paired with lift
from the shortwave will lead to numerous updrafts along the front.
While this will be occurring within a similar environment detailed
prior, the number of updrafts paired with them occurring along the
front may lead to destructive interactions and congealing into line
segments and/or clusters. While this will tend to limit a strong
tornado threat, storms will still be capable of all severe hazards.
Convection is expected to depart the CWA with the front by 9-10pm.

Even with the FROPA Monday evening, the threat for convection will
continue on Tuesday. Guidance consensus has the front stalling just
south of the CWA early Tuesday and then buckling northward as a
shortwave moves through the Central Plains and into the Midwest
through the day. This shortwave will send a subtle surface
reflection through the Mid South along the front, with a brief
period of warm air advection that will help force elevated
convection for areas mainly along and south of I-70. If the front
can move northward enough, shear profiles and instability amounts
favor supercells capable primarily of large hail across far
southeastern Missouri during the afternoon. Waning instability and
the front continuing southward will bring an end to rain chances
during the evening.

Elmore

&&

.LONG TERM... (Tuesday Night through Sunday)
Issued at 155 AM CDT Mon Apr 27 2026

Both deterministic guidance and ensemble clusters keep upper-level
troughing slowly moving eastward over the eastern CONUS through the
long range forecast period. This will maintain northwesterly flow
over the Middle Mississippi Valley through Saturday as several
rounds of high pressure pass through the region. As a result,
temperatures will run at or below climatological normals into the
weekend and mostly dry weather is expected.

Elmore

&&

.AVIATION...  (For the 12z TAFs through 12z Tuesday Morning)
Issued at 647 AM CDT Mon Apr 27 2026

Thunderstorms are expected at times throughout the day, impacting
all terminals. The greatest coverage of thunderstorms this morning
is expected to be across central, northeastern MO into west-central
IL impacting KCOU, KJEF, and KUIN, with lower confidence in
thunderstorms reaching the St. Louis metro terminals through early
afternoon. Another round of redevelopment will take place this
afternoon and evening with the greatest chance of severe
thunderstorms as well. These thunderstorms will be capable of hail,
strong winds, and some tornadoes. Trends will need to be monitored
for more significant terminal impacts beyond MVFR to IFR flight
conditions.

A cold front will pass through the region this evening, veering
southerly winds to northwesterly with drier conditions prevailing.
There is the potential for some post-frontal MVFR ceilings late
tonight into Tuesday morning, with the highest chance of impacts at
KUIN. However, given that confidence is low in impacts before the
end of the TAF period, VFR flight conditions are maintained for
now.

Pfahler

&&

.LSX WATCHES/WARNINGS/ADVISORIES...
MO...None.
IL...None.
&&

WFO LSX

Hazardous Weather Outlook
National Weather Service St Louis MO
202 AM CDT Mon Apr 27 2026

ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-280715-
Greene IL-Macoupin IL-Montgomery IL-Bond IL-Fayette IL-Clinton IL-
Marion IL-Washington IL-Randolph IL-Adams IL-Brown IL-Pike IL-
Calhoun IL-Jersey IL-Madison IL-Saint Clair IL-Monroe IL-Knox MO-
Lewis MO-Shelby MO-Marion MO-Monroe MO-Ralls MO-Pike MO-Boone MO-
Audrain MO-Moniteau MO-Cole MO-Osage MO-Callaway MO-Montgomery MO-
Lincoln MO-Gasconade MO-Warren MO-Saint Charles MO-Franklin MO-
Saint Louis MO-Saint Louis City MO-Jefferson MO-Crawford MO-
Washington MO-Saint Francois MO-Sainte Genevieve MO-Iron MO-
Madison MO-Reynolds MO-
202 AM CDT Mon Apr 27 2026

This Hazardous Weather Outlook is for portions of eastern and
central Missouri as well as west central and southwest Illinois.

.DAY ONE...Today and tonight.

Periods of thunderstorms are expected through the day into this
evening. Thunderstorms this afternoon and evening will be capable of
large hail, damaging wind gusts, and tornadoes.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

There is a chance of thunderstorms Tuesday.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report wind damage, hail occurrence and
size, and tornado occurrence to NWS St. Louis.

Elmore

Preliminary Local Storm Report
National Weather Service St Louis MO
352 PM CDT Mon Apr 27 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0319 PM     Hail             5 NE Columbia           39.01N 92.28W
04/27/2026  E1.00 Inch       Boone              MO   Public

            Report from mPING: Quarter (1.00 in.).

&&

Preliminary Local Storm Report
National Weather Service St Louis MO
359 PM CDT Mon Apr 27 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0359 PM     Hail             3 NW Rush Hill          39.24N 91.78W
04/27/2026  E1.00 Inch       Audrain            MO   Public

&&

Preliminary Local Storm Report
National Weather Service St Louis MO
400 PM CDT Mon Apr 27 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0355 PM     Hail             1 WNW Mexico            39.17N 91.88W
04/27/2026  E1.50 Inch       Audrain            MO   Public

&&

Preliminary Local Storm Report
National Weather Service St Louis MO
413 PM CDT Mon Apr 27 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0410 PM     Hail             3 NW Rush Hill          39.24N 91.78W
04/27/2026  E1.00 Inch       Audrain            MO   Public

            Second round of quarter-sized hail.

&&

Preliminary Local Storm Report
National Weather Service St Louis MO
443 PM CDT Mon Apr 27 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0440 PM     Hail             3 NW Rush Hill          39.24N 91.78W
04/27/2026  E1.00 Inch       Audrain            MO   Public

            third round of quarter-sized hail.

&&

Preliminary Local Storm Report
National Weather Service St Louis MO
446 PM CDT Mon Apr 27 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0446 PM     Hail             California              38.63N 92.57W
04/27/2026  E0.70 Inch       Moniteau           MO   Public

&&