River Flood Warning 86, NWS St. Louis, MO

671 
WGUS83 KLSX 140314
FLSLSX

Flood Statement
National Weather Service St Louis MO
1014 PM CDT Sat Jun 13 2026

...The Flood Warning continues 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...

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

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

&&

MOC073-139-151515-
/O.EXT.KLSX.FL.W.0086.260615T1400Z-260619T0000Z/
/HRNM7.1.ER.260615T1400Z.260616T1200Z.260617T1800Z.NO/
1014 PM CDT Sat Jun 13 2026

...FLOOD WARNING NOW IN EFFECT FROM MONDAY MORNING TO THURSDAY
EVENING...

* WHAT...Minor flooding is forecast.

* WHERE...Missouri River at Hermann.

* WHEN...From Monday morning to Thursday evening.

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

* ADDITIONAL DETAILS...
  - At 9:30 PM CDT Saturday the stage was 20.6 feet.
  - Forecast...The river is expected to rise above flood stage late
    Monday morning to a crest of 21.7 feet Tuesday morning. It will
    then fall below flood stage early Wednesday afternoon.
  - Flood stage is 21.0 feet.



&&


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

Missouri River
 Hermann      21.0    20.6    20.9  21.7  21.2  20.3  18.0



&&

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


$$

Peine

714 
WGUS83 KLSX 141434
FLSLSX

Flood Statement
National Weather Service St Louis MO
934 AM CDT Sun Jun 14 2026

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

  Missouri River near Chamois.

...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...

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.

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

&&

MOC027-151-160245-
/O.EXT.KLSX.FL.W.0082.000000T0000Z-260619T0000Z/
/CMSM7.1.ER.000000T0000Z.260616T0000Z.260617T1200Z.NO/
934 AM CDT Sun Jun 14 2026

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

* WHAT...Minor flooding is forecast.

* WHERE...Missouri River near Chamois.

* WHEN...Until Thursday evening.

* 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 to a crest of 18.7 feet
    tomorrow evening. It will then fall below flood stage Wednesday
    morning.
  - Flood stage is 17.0 feet.



&&


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

Missouri River
 Chamois      17.0    MSG     18.3  18.5  17.0  15.5  12.7



&&

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


$$

MOC073-139-160245-
/O.EXT.KLSX.FL.W.0086.260615T0800Z-260619T0000Z/
/HRNM7.1.ER.260615T0800Z.260616T0000Z.260617T1800Z.NO/
934 AM CDT Sun Jun 14 2026

...FLOOD WARNING NOW IN EFFECT FROM LATE TONIGHT TO THURSDAY
EVENING...

* WHAT...Minor flooding is forecast.

* WHERE...Missouri River at Hermann.

* WHEN...From late tonight to Thursday evening.

* 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 AM CDT Sunday the stage was 20.4 feet.
  - Forecast...The river is expected to rise above flood stage late
    tonight to a crest of 21.6 feet tomorrow evening. It will then
    fall below flood stage early Wednesday afternoon.
  - Flood stage is 21.0 feet.



&&


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

Missouri River
 Hermann      21.0    20.4    21.2  21.6  21.1  20.1  17.1



&&

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


$$

Kimble

967 
WGUS83 KLSX 150107
FLSLSX

Flood Statement
National Weather Service St Louis MO
807 PM CDT Sun Jun 14 2026

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

  Missouri River at Hermann.

...The Flood Warning continues 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...

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.

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

&&

MOC073-139-161315-
/O.EXT.KLSX.FL.W.0086.260615T0600Z-260619T0300Z/
/HRNM7.1.ER.260615T0600Z.260616T0000Z.260617T2100Z.NO/
807 PM CDT Sun Jun 14 2026

...FLOOD WARNING NOW IN EFFECT FROM LATE TONIGHT TO THURSDAY
EVENING...

* WHAT...Minor flooding is forecast.

* WHERE...Missouri River at Hermann.

* WHEN...From late tonight to Thursday evening.

* 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 Sunday the stage was 20.7 feet.
  - Forecast...The river is expected to rise above flood stage just
    after midnight tonight to a crest of 21.8 feet tomorrow evening.
    It will then fall below flood stage Wednesday afternoon.
  - Flood stage is 21.0 feet.



&&


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

Missouri River
 Hermann      21.0    20.7    21.7  21.2  20.1  17.0  14.5



&&

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


$$

MOC027-151-161315-
/O.CON.KLSX.FL.W.0082.000000T0000Z-260619T0000Z/
/CMSM7.1.ER.000000T0000Z.260616T0000Z.260617T1200Z.NO/
807 PM CDT Sun Jun 14 2026

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

* WHAT...Minor flooding is forecast.

* WHERE...Missouri River near Chamois.

* WHEN...Until Thursday evening.

* ADDITIONAL DETAILS...
  - There is no current observed data.
  - Forecast...The river is expected to rise to a crest of 19.0 feet
    tomorrow evening. It will then fall below flood stage Wednesday
    morning.
  - Flood stage is 17.0 feet.



&&


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

Missouri River
 Chamois      17.0    MSG     18.7  17.0  15.4  12.7  MSG



&&

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


$$

MRB

184 
WGUS83 KLSX 151643
FLSLSX

Flood Statement
National Weather Service St Louis MO
1143 AM CDT Mon Jun 15 2026

...The Flood Warning continues 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...

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.

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

&&

MOC073-139-170445-
/O.EXT.KLSX.FL.W.0086.000000T0000Z-260619T0130Z/
/HRNM7.1.ER.260615T0630Z.260616T0600Z.260617T1930Z.NO/
1143 AM CDT Mon Jun 15 2026

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

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

* WHERE...Missouri River at Hermann.

* WHEN...Until Thursday 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 10:30 AM CDT Monday the stage was 21.5 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 10:30 AM CDT Monday was 21.5 feet.
  - Forecast...The river is expected to rise to a crest of 22.0 feet
    just after midnight tonight. It will then fall below flood stage
    early Wednesday afternoon.
  - Flood stage is 21.0 feet.



&&


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

Missouri River
 Hermann      21.0    21.5    22.0  21.3  19.7  16.8  14.6



&&

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


$$

Peine

745 
WGUS83 KLSX 160203
FLSLSX

Flood Statement
National Weather Service St Louis MO
903 PM CDT Mon Jun 15 2026

...The Flood Warning is extended 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...

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.

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

&&

MOC073-139-171415-
/O.EXT.KLSX.FL.W.0086.000000T0000Z-260619T0712Z/
/HRNM7.1.ER.260615T0630Z.260616T1200Z.260618T0112Z.NO/
903 PM CDT Mon Jun 15 2026

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

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

* WHERE...Missouri River at Hermann.

* WHEN...Until late Thursday night.

* 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 Monday the stage was 22.0 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 7:30 PM CDT Monday was 22.0 feet.
  - Forecast...The river is expected to rise to a crest of 22.2 feet
    Tuesday morning. It will then fall below flood stage Wednesday
    evening.
  - 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    22.0    21.5  19.9  16.6  14.7  13.5



&&

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


$$

MOC027-151-171415-
/O.EXT.KLSX.FL.W.0082.000000T0000Z-260618T2136Z/
/CMSM7.1.ER.000000T0000Z.260616T0600Z.260617T0936Z.NO/
903 PM CDT Mon Jun 15 2026

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

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

* WHERE...Missouri River near Chamois.

* WHEN...Until Thursday afternoon.

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

* ADDITIONAL DETAILS...
  - At 12:50 PM CDT Sunday, June 14 the stage was 17.0 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 12:50 PM CDT Sunday was 17.0 feet.
  - Forecast...The river is expected to rise to a crest of 18.6 feet
    just after midnight tonight. It will then fall below flood stage
    early Wednesday morning.
  - 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    17.0    16.8  13.7  11.6  9.8   MSG



&&

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


$$

BAH

151 
WGUS83 KLSX 161513
FLSLSX

Flood Statement
National Weather Service St Louis MO
1013 AM CDT Tue Jun 16 2026

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

  Missouri River near Chamois.

...The Flood Warning continues 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...

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.

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

&&

MOC027-151-180315-
/O.EXT.KLSX.FL.W.0082.000000T0000Z-260619T0000Z/
/CMSM7.1.ER.000000T0000Z.260616T1800Z.260617T1200Z.NO/
1013 AM CDT Tue Jun 16 2026

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

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

* WHERE...Missouri River near Chamois.

* WHEN...Until Thursday evening.

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

* ADDITIONAL DETAILS...
  - At 9:45 AM CDT Tuesday the stage was 18.3 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 9:45 AM CDT Tuesday was 18.3 feet.
  - Forecast...The river is expected to rise to a crest of 18.4 feet
    this afternoon. It will then fall below flood stage tomorrow
    morning.
  - 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    18.3    17.0  13.7  11.3  9.5   8.5



&&

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


$$

MOC073-139-180315-
/O.CON.KLSX.FL.W.0086.000000T0000Z-260619T0712Z/
/HRNM7.1.ER.260615T0630Z.260616T1430Z.260618T0112Z.NO/
1013 AM CDT Tue Jun 16 2026

...FLOOD WARNING REMAINS IN EFFECT UNTIL LATE THURSDAY NIGHT...

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

* WHERE...Missouri River at Hermann.

* WHEN...Until late Thursday night.

* 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 AM CDT Tuesday the stage was 22.2 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 9:30 AM CDT Tuesday was 22.2 feet.
  - Forecast...The river is expected to fall below flood stage
    tomorrow evening and continue falling to 12.5 feet Tuesday, June
    23.
  - 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    22.2    21.7  19.9  16.6  14.5  13.4



&&

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


$$

Maples

928 
WGUS83 KLSX 170310
FLSLSX

Flood Statement
National Weather Service St Louis MO
1010 PM CDT Tue Jun 16 2026

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

  Missouri River at St. Charles.

  Mississippi River at Chester.

  Mississippi River at Clarksville.

  Mississippi River at Mel Price LD.

  Meramec River near Arnold.

  Illinois River at Hardin.

  Mississippi River at Louisiana.

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

  Missouri River at Hermann.

  Missouri River near Chamois.

  Illinois River at Valley City.

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.

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

&&

MOC183-189-181515-
/O.EXT.KLSX.FL.W.0096.000000T0000Z-260618T1800Z/
/SCLM7.1.ER.260616T1747Z.260617T0300Z.260617T1200Z.NO/
1010 PM CDT Tue Jun 16 2026

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

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

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

* WHEN...Until Thursday 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 10:00 PM CDT Tuesday the stage was 25.2 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 10:00 PM CDT Tuesday was 25.2 feet.
  - Forecast...The river is expected to fall below flood stage
    tomorrow morning and continue falling to 17.9 feet Sunday
    evening.
  - Flood stage is 25.0 feet.



&&


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

Missouri River
 St. Charles  25.0    25.2    24.0  21.8  19.6  18.2  MSG



&&

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


$$

ILC077-157-MOC157-186-181515-
/O.EXT.KLSX.FL.W.0088.000000T0000Z-260621T1108Z/
/CHSI2.1.ER.260615T1516Z.260618T1800Z.260620T0508Z.NO/
1010 PM CDT Tue Jun 16 2026

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

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

* WHERE...Mississippi River at Chester.

* WHEN...Until Sunday morning.

* IMPACTS...At 28.0 feet, Unleveed islands near Chester and the
  prison farm floods.

* ADDITIONAL DETAILS...
  - At 10:00 PM CDT Tuesday the stage was 28.0 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 10:00 PM CDT Tuesday was 28.1 feet.
  - Forecast...The river is expected to rise to a crest of 28.8 feet
    early Thursday afternoon. It will then fall below flood stage
    early Saturday morning.
  - Flood stage is 27.0 feet.



&&


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

Mississippi River
 Chester         27.0    28.0    28.7  28.6  26.3  23.5  21.8



&&

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


$$

MOC073-139-181515-
/O.EXT.KLSX.FL.W.0086.000000T0000Z-260619T0900Z/
/HRNM7.1.ER.260615T0630Z.260617T0000Z.260618T0300Z.NO/
1010 PM CDT Tue Jun 16 2026

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

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

* WHERE...Missouri River at Hermann.

* WHEN...Until late Thursday night.

* 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 Tuesday the stage was 22.3 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 9:30 PM CDT Tuesday was 22.4 feet.
  - Forecast...The river is expected to fall below flood stage late
    tomorrow evening and continue falling to 12.4 feet Tuesday, June
    23.
  - 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    22.3    20.0  16.6  14.4  13.4  12.9



&&

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


$$

ILC013-MOC163-181515-
/O.EXT.KLSX.FL.W.0084.000000T0000Z-260619T0000Z/
/CLKM7.1.ER.260613T0630Z.260615T1030Z.260617T1800Z.NO/
1010 PM CDT Tue Jun 16 2026

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

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

* WHERE...Mississippi River at Clarksville.

* WHEN...Until Thursday evening.

* IMPACTS...At 25.5 feet, State Route P east of Elsberry begins
  flooding just east of the levee.

* ADDITIONAL DETAILS...
  - At 10:00 PM CDT Tuesday the stage was 25.5 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 10:00 PM CDT Tuesday was 25.8 feet.
  - Forecast...The river is expected to fall below flood stage early
    tomorrow afternoon and continue falling to 21.2 feet Tuesday,
    June 23.
  - Flood stage is 25.0 feet.



&&


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

Mississippi River
 Clarksville     25.0    25.5    24.2  23.1  22.4  22.2  21.9



&&

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


$$

MOC027-151-181515-
/O.EXT.KLSX.FL.W.0082.000000T0000Z-260619T0224Z/
/CMSM7.1.ER.000000T0000Z.260616T1445Z.260617T1424Z.NO/
1010 PM CDT Tue Jun 16 2026

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

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

* WHERE...Missouri River near Chamois.

* WHEN...Until Thursday evening.

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

* ADDITIONAL DETAILS...
  - At 9:45 AM CDT Tuesday the stage was 18.3 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 9:45 AM CDT Tuesday was 18.3 feet.
  - Forecast...The river is expected to fall below flood stage late
    tomorrow morning and continue falling to 8.3 feet Sunday evening.
  - 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    18.3    14.0  11.5  9.5   8.6   MSG



&&

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


$$

ILC149-171-181515-
/O.EXT.KLSX.FL.W.0093.260620T0000Z-000000T0000Z/
/VALI2.1.ER.260620T0000Z.260623T0000Z.000000T0000Z.NO/
1010 PM CDT Tue Jun 16 2026

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

* WHAT...Minor flooding is forecast.

* WHERE...Illinois River at Valley City.

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

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

* ADDITIONAL DETAILS...
  - At 10:00 PM CDT Tuesday the stage was 13.3 feet.
  - Forecast...The river is expected to rise above flood stage Friday
    evening and continue rising to 14.3 feet Monday evening.
    Additional rises are possible thereafter.
  - Flood stage is 14.0 feet.



&&


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

Illinois River
 Valley City  14.0    13.3    13.6  13.9  14.0  14.1  14.2



&&

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


$$

ILC119-MOC183-181515-
/O.CON.KLSX.FL.W.0095.000000T0000Z-260619T1800Z/
/ALNI2.1.ER.260617T0341Z.260617T1200Z.260618T1200Z.NO/
1010 PM CDT Tue Jun 16 2026

...FLOOD WARNING REMAINS IN EFFECT UNTIL FRIDAY AFTERNOON...

* WHAT...Minor flooding is forecast.

* WHERE...Mississippi River at Mel Price LD.

* WHEN...Until Friday afternoon.

* IMPACTS...At 20.8 feet, Unprotected farm land begins to flood

* ADDITIONAL DETAILS...
  - At 10:00 PM CDT Tuesday the stage was 21.0 feet.
  - Forecast...The river is expected to rise above flood stage late
    this evening to a crest of 21.2 feet tomorrow morning. It will
    then fall below flood stage Thursday morning.
  - Flood stage is 21.0 feet.



&&


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

Mississippi River
 Mel Price LD    21.0    21.0    21.0  19.6  17.7  16.4  15.7



&&

LAT...LON 3889 9014 3889 9009 3881 9001 3881 9017
      3884 9018


$$

MOC099-189-181515-
/O.CON.KLSX.FL.W.0094.000000T0000Z-260620T1000Z/
/ARNM7.1.ER.260617T0900Z.260618T0000Z.260619T0400Z.NO/
1010 PM CDT Tue Jun 16 2026

...FLOOD WARNING REMAINS IN EFFECT UNTIL LATE FRIDAY NIGHT...

* WHAT...Minor flooding is forecast.

* WHERE...Meramec River near Arnold.

* WHEN...Until late Friday night.

* IMPACTS...At 24.7 feet, Hawkins Road south of Meramec Bottom Road
  begins flooding.

* ADDITIONAL DETAILS...
  - At 9:30 PM CDT Tuesday the stage was 23.8 feet.
  - Forecast...The river is expected to rise above flood stage late
    tonight to a crest of 24.4 feet tomorrow evening. It will then
    fall below flood stage late Thursday evening.
  - Flood stage is 24.0 feet.



&&


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

Meramec River
 Arnold       24.0    23.8    24.4  23.5  20.6  17.0  14.9



&&

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


$$

ILC013-061-083-181515-
/O.CON.KLSX.FL.W.0092.000000T0000Z-000000T0000Z/
/HARI2.1.ER.260616T1030Z.260622T0600Z.000000T0000Z.NO/
1010 PM CDT Tue Jun 16 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.

* IMPACTS...At 25.0 feet, Flood Stage.  Lowland flooding of
  unprotected agricultural land begins.

* ADDITIONAL DETAILS...
  - At 10:00 PM CDT Tuesday the stage was 25.2 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 10:00 PM CDT Tuesday was 25.2 feet.
  - Forecast...The river is expected to remain steady above flood
    stage at 25.2 feet.
  - Flood stage is 25.0 feet.



&&


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

Illinois River
 Hardin       25.0    25.2    25.4  25.5  25.5  25.5  25.6



&&

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


$$

ILC149-MOC163-181515-
/O.CON.KLSX.FL.W.0083.000000T0000Z-260619T0900Z/
/LUSM7.1.ER.260612T1715Z.260615T1000Z.260618T0300Z.NO/
1010 PM CDT Tue Jun 16 2026

...FLOOD WARNING REMAINS IN EFFECT UNTIL LATE THURSDAY NIGHT...

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

* WHERE...Mississippi River at Louisiana.

* WHEN...Until late Thursday night.

* IMPACTS...At 15.0 feet, The first quarter mile of Edison Avenue
  beyond the railroad tracks begins flooding near this height.

* ADDITIONAL DETAILS...
  - At 10:00 PM CDT Tuesday the stage was 15.7 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 10:00 PM CDT Tuesday was 16.1 feet.
  - Forecast...The river is expected to fall below flood stage late
    tomorrow evening and continue falling to 12.2 feet Tuesday, June
    23.
  - Flood stage is 15.0 feet.



&&


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

Mississippi River
 Louisiana       15.0    15.7    14.6  13.6  13.0  12.8  12.6



&&

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


$$

Elmore

900 
WGUS83 KLSX 171719
FLSLSX

Flood Statement
National Weather Service St Louis MO
1219 PM CDT Wed Jun 17 2026

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

  Missouri River at St. Charles.

  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

&&

MOC183-189-190530-
/O.EXT.KLSX.FL.W.0096.000000T0000Z-260619T0600Z/
/SCLM7.1.ER.260616T1747Z.260617T0800Z.260618T0000Z.NO/
1219 PM CDT Wed Jun 17 2026

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

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

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

* WHEN...Until late Thursday night.

* 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 12:00 PM CDT Wednesday the stage was 25.1 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 12:00 PM CDT Wednesday was 25.2 feet.
  - Forecast...The river is expected to fall below flood stage this
    evening and continue falling to 17.8 feet Monday morning.
  - Flood stage is 25.0 feet.



&&


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

Missouri River
 St. Charles  25.0    25.1    24.4  22.6  20.4  18.8  17.8



&&

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


$$

MOC073-139-190530-
/O.EXT.KLSX.FL.W.0086.000000T0000Z-260619T1300Z/
/HRNM7.1.ER.260615T0630Z.260617T0000Z.260618T0700Z.NO/
1219 PM CDT Wed Jun 17 2026

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

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

* WHERE...Missouri River at Hermann.

* WHEN...Until Friday morning.

* 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 21.7 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 11:30 AM CDT Wednesday was 22.4 feet.
  - Forecast...The river is expected to fall below flood stage just
    after midnight tonight and continue falling to 12.2 feet
    Wednesday, June 24.
  - 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    21.7    20.5  17.4  15.0  13.8  13.1



&&

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


$$

MOC027-151-190445-
/O.EXT.KLSX.FL.W.0082.000000T0000Z-260619T0440Z/
/CMSM7.1.ER.000000T0000Z.260616T1445Z.260617T1640Z.NO/
1219 PM CDT Wed Jun 17 2026

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

* WHAT...Minor flooding is occurring.

* WHERE...Missouri River near Chamois.

* WHEN...Until Thursday evening.

* ADDITIONAL DETAILS...
  - At 7:00 AM CDT Wednesday the stage was 17.4 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 7:00 AM CDT Wednesday was 17.4 feet.
  - Forecast...The river is expected to fall to 8.3 feet Monday
    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    17.4    15.0  12.3  10.2  9.0   8.3



&&

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


$$

Fuchs

546 
WGUS83 KLSX 180113
FLSLSX

Flood Statement
National Weather Service St Louis MO
813 PM CDT Wed Jun 17 2026

...The Flood Warning continues for the following river 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

&&

MOC073-139-191200-
/O.EXT.KLSX.FL.W.0086.000000T0000Z-260619T1200Z/
/HRNM7.1.ER.260615T0630Z.260617T0000Z.260618T0600Z.NO/
813 PM CDT Wed Jun 17 2026

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

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

* WHERE...Missouri River at Hermann.

* WHEN...Until Friday morning.

* ADDITIONAL DETAILS...
  - At 7:30 PM CDT Wednesday the stage was 21.2 feet.
  - Forecast...The river is expected to fall below flood stage
    overnight tonight.
  - Flood stage is 21.0 feet.



&&


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

Missouri River
 Hermann      21.0    21.2    20.6  17.7  15.3  14.1  13.8



&&

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


$$

Gosselin

985 
WGUS83 KLSX 181639
FLSLSX

Flood Statement
National Weather Service St Louis MO
1139 AM CDT Thu Jun 18 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.

MOC073-139-181745-
/O.CAN.KLSX.FL.W.0086.000000T0000Z-260618T1639Z/
/HRNM7.1.ER.260615T0630Z.260617T0000Z.260618T0545Z.NO/
1139 AM CDT Thu Jun 18 2026

...FLOOD WARNING IS CANCELLED...

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

* ADDITIONAL DETAILS...
  - At 10:30 AM CDT Thursday the stage was 20.2 feet.
  - The river rose above flood stage on June 15, cresting at 22.3
    feet on June 16. It fell below flood stage shortly after midnight
    this morning.
  - Forecast...The river is expected to continue falling over the
    coming days, reaching as low as 12.4 feet by Thursday, June 25.



&&


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

Missouri River
 Hermann      21.0    20.2    17.7  15.6  14.3  13.9  13.7



&&

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


$$

Kimble

Area Forecast Discussion...Updated Aviation
National Weather Service Saint Louis MO
607 AM CDT Sat Jun 13 2026

.KEY MESSAGES...

-There are multiple chances for severe thunderstorms today, though
the best chance will be this evening along the cold front.

-Cool and dry conditions expected on Sunday and Monday before
 showers and thunderstorms return to the region Tuesday and
 beyond.

&&

.SHORT TERM...  (Through Late Sunday Afternoon)
Issued at 305 AM CDT Sat Jun 13 2026

Today's forecast will have many moving parts with several
opportunities for thunderstorms to develop. The best chance for
thunderstorms, as well as severe thunderstorms, remains this evening
along a cold front. Each chance is outlined below:

1. Morning convection: Showers and a few thunderstorms have formed
across eastern Kansas and west-central Missouri this morning, aided
by a weak low-level jet and warm air advection. Previous rounds of
guidance have shown this convection becoming more widespread,
developing into an MCS and pushing east across the forecast area
this morning. Confidence has started to decrease in this solution as
the latest CAM guidance keeps convection weak and disorganized
before it dissipates over the western forecast area this morning.

In the absence of a robust MCS cold pool, convection will indeed
weaken as it pushes east through the forecast area, outside the
influence of the low-level jet. Roughly 500-1500 J/kg of MLCAPE will
be available during the mid-morning, with decreasing values east of
the Mississippi River. So if an MCS does develop and instability is
on the higher end of the spectrum, the system would be able to
maintain itself at least to the Mississippi River before starting to
diminish. Severe chances are low with the morning convection given
all the above caveats, but if an MCS does become rooted in the
boundary layer, damaging wind gusts would be the main concern. Any
isolated severe thunderstorms will bring a risk for quarter-sized
hail.

2. Afternoon warm air advection convection:

Warm air advection will continue across the region this afternoon,
aided by a low-level jet that will only continue to strengthen
through the day. This will promote the development of isolated to
small clusters of showers and thunderstorms across the region.
Increasing instability to around 1000-2000 J/kg of MLCAPE area wide,
depending on how much the morning convection stunts
destabilization, plus 30-40 kts of 0-6 km shear will encourage at
least a few cells to become severe. Quarter-sized hail and
damaging wind gusts are possible with any storms that become
severe. While I cannot rule out a tornado at this point, the
hodographs are not as favorable as they will be along the front
during the evening.

3. Evening convection along cold front:

The best chance for severe thunderstorms today will be along a cold
front that will drop into the region this evening, with enhanced
lift from a mid-level shortwave. Initial development will be
isolated supercells across southern Iowa and northwest Missouri
where the best instability, shear, and lapse rates will be. As the
front and associated convection progress southeast into the forecast
area convection is expected to become so widespread that clusters
and bowing segments develop, though embedded supercells are still
possible. The main threat with any severe thunderstorms during this
period will be damaging winds, though quarter-sized hail and a
tornado cannot be ruled out within embedded supercells near the
front as hodographs become more curved. Instability will wane over
the evening and further southeast from the front, though there is
uncertainty in how quickly this will happen. Thus, confidence in
severe thunderstorm development across southeast Missouri and
southern Illinois is lower than over central and northeast Missouri.

4. Flash flood potential

Confidence is high that convection will be progressive enough in our
forecast area to preclude any widespread flash flood threat. The
best chance for any flash flooding would result front multiple
thunderstorms moving across the same area through the course of the
day. Where this happens, 2-3 inches of rain is possible, with
localized amounts up to 5" (via the HREF 24 hour LPMM), though 5"
amounts are representative of the worst case scenario. Northeast
Missouri is at the greatest risk for flash flooding, all other
things being equal, given the very wet antecedent conditions. Over
the past 72 hours portions of this area have been between 4-7" of
rain (MRMS Multi-Sensor Pass 2), while the remainder of the CWA has
seen generally less than 2".

Delia

&&

.LONG TERM...  (Sunday Night through Friday)
Issued at 305 AM CDT Sat Jun 13 2026

In the wake of Saturday's cold front, cold air advection will drop
850 mb temperatures to around 10C by Sunday afternoon. The result
will be high temperatures nearly 10 degrees below normal for this
time of year, in the 70s. Monday likewise will be cooler than normal
for mid June. Starting Tuesday, however, low-level flow will become
westerly then southwesterly, advecting warm, moist air back into the
region and giving high temperatures a boost. At the same time, mid-
level disturbances will propagate through the northwest mid-level
flow on the western side of an amplified mid-level trough. This
will bring a return of showers and thunderstorms to the region
Tuesday.

The best chance for showers and thunderstorms will be Wednesday into
Thursday ahead of and along a cold front that will push through the
forecast area. Uncertainty remains in the details of the timing of
the frontal passage, the favorability of the environment, and the
subsequent severe chances.

Delia

&&

.AVIATION...  (For the 12z TAFs through 12z Sunday Morning)
Issued at 554 AM CDT Sat Jun 13 2026

Showers and thunderstorms are blooming across central Missouri
this morning and are expected to dissipate within a few hours.
They are already impacting the mid-Missouri terminals (KJEF,
KCOU), where brief reductions in visibility to MVFR flight
conditions are possible. Confidence is low in if this round of
showers and thunderstorms will impact the St. Louis metro
terminals (KSTL, KCPS, KSUS).

Additional showers and thunderstorms are possible this afternoon
across the area, though confidence is low in where these will
form. The best chance for showers and thunderstorms at all
terminals today will be this evening as thunderstorms form along a
cold front and move southeast through the region. MVFR to IFR
visibilities are expected underneath any thunderstorms, and MVFR
stratus is expected to trail the front for a few hours before dry
air erodes this layer. Southerly winds will become variable during
the afternoon ahead of the front, and eventually northwesterly
behind the front.

Delia

&&

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

WFO LSX