Alert archive / Illinois / River Flood Warnings in 2026

River Flood Warning 87, NWS St. Louis, MO

June 13, 2026Pike County, Illinois; Marion County, Missouri

NWS St. Louis, MO issued this river flood warning at Jun 13, 2026, 11:41 AM CDT for Pike County, Illinois; Marion County, Missouri. It took effect at Jun 13, 2026, 10:20 PM CDT. It was in force for 5 days.

The area

The outline as issued.

The facts

Issued
Jun 13, 2026, 11:41 AM CDT (16:41 UTC)
In effect from
Jun 13, 2026, 10:20 PM CDT
Expired
Jun 18, 2026, 7:00 PM CDT
In force
5 days
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Flood severity
Minor

Counties Pike County, IL, Marion County, MO

The radar

The St Louis radar (KLSX), 131 km from the middle of the area, began a volume at 16:42 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The river

Written for the forecast point Mississippi River at Hannibal (HNNM7).

Action stage
15 ft
Minor stage
17 ft
Moderate stage
22 ft
Major stage
24 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05501600, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

The text

As transmitted.

890 
WGUS43 KLSX 131641
FLWLSX

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service St Louis MO
1141 AM CDT Sat Jun 13 2026

...The National Weather Service in St Louis has issued a Flood
Warning for the following rivers in Missouri...Illinois...

  Mississippi River at Hannibal.

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

&&

ILC149-MOC127-150445-
/O.NEW.KLSX.FL.W.0087.260615T1800Z-260619T0000Z/
/HNNM7.1.ER.260615T1800Z.260616T1800Z.260617T1800Z.NO/
1141 AM CDT Sat Jun 13 2026

...FLOOD WARNING IN EFFECT FROM MONDAY AFTERNOON TO THURSDAY
EVENING...

* WHAT...Minor flooding is forecast.

* WHERE...Mississippi River at Hannibal.

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

* IMPACTS...At 17.0 feet, John Hay Recreation Area on east side
  (inside the Illinois Sny Levee) begins flooding.

* ADDITIONAL DETAILS...
  - At 11:15 AM CDT Saturday the stage was 17.0 feet.
  - Forecast...The river will fall below flood stage late this
    morning to 16.6 feet early tomorrow afternoon. It will then rise
    above flood stage early Monday afternoon to 17.3 feet Tuesday
    evening. It will fall below flood stage again early Wednesday
    afternoon.
  - Flood stage is 17.0 feet.



&&


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

Mississippi River
 Hannibal        17.0    17.0    16.6  16.9  17.2  17.2  16.0



&&

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


$$

Kimble
4 follow-up statements
930 
WGUS83 KLSX 140320
FLSLSX

Flood Statement
National Weather Service St Louis MO
1020 PM CDT Sat Jun 13 2026

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

  Mississippi River at Hannibal.

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

  Mississippi River at Clarksville.

  Mississippi River at Chester.

  Mississippi River at Louisiana.

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

&&

ILC149-MOC127-151530-
/O.EXT.KLSX.FL.W.0087.260614T0320Z-260619T0000Z/
/HNNM7.1.ER.260613T1950Z.260615T1800Z.260617T1800Z.NO/
1020 PM CDT Sat Jun 13 2026

...FLOOD WARNING NOW IN EFFECT FROM THIS EVENING TO THURSDAY
EVENING...

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

* WHERE...Mississippi River at Hannibal.

* WHEN...From this evening to Thursday evening.

* IMPACTS...At 17.0 feet, John Hay Recreation Area on east side
  (inside the Illinois Sny Levee) begins flooding.

* ADDITIONAL DETAILS...
  - At 9:15 PM CDT Saturday the stage was 17.1 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 9:15 PM CDT Saturday was 17.1 feet.
  - Forecast...The river is expected to rise to a crest of 17.4 feet
    early Monday afternoon. It will then fall below flood stage early
    Wednesday afternoon.
  - Flood stage is 17.0 feet.



&&


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

Mississippi River
 Hannibal        17.0    17.1    17.3  17.4  17.2  16.1  14.5



&&

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


$$

ILC013-MOC163-151530-
/O.EXT.KLSX.FL.W.0084.000000T0000Z-260620T1048Z/
/CLKM7.1.ER.260613T0630Z.260617T0600Z.260619T0448Z.NO/
1020 PM CDT Sat Jun 13 2026

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

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

* WHERE...Mississippi River at Clarksville.

* WHEN...Until late Friday night.

* IMPACTS...At 27.2 feet, Silo Park just northwest of Clarksville off
  Highway 79 begins flooding.

* ADDITIONAL DETAILS...
  - At 10:00 PM CDT Saturday the stage was 25.7 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 10:00 PM CDT Saturday was 25.7 feet.
  - Forecast...The river is expected to rise to a crest of 26.8 feet
    early Wednesday morning. It will then fall below flood stage late
    Thursday evening.
  - Flood stage is 25.0 feet.



&&


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

Mississippi River
 Clarksville     25.0    25.7    25.9  26.6  26.8  26.2  24.3



&&

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


$$

ILC077-157-MOC157-186-150600-
/O.EXT.KLSX.FL.W.0088.260615T0000Z-260615T0600Z/
/CHSI2.1.ER.260615T0000Z.260619T0000Z.260620T2230Z.NO/
1020 PM CDT Sat Jun 13 2026

...FLOOD WARNING NOW IN EFFECT FROM SUNDAY EVENING TO LATE SUNDAY
NIGHT...

* WHAT...Minor flooding is forecast.

* WHERE...Mississippi River at Chester.

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

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

* ADDITIONAL DETAILS...
  - At 10:00 PM CDT Saturday the stage was 25.4 feet.
  - Forecast...The river is expected to rise above flood stage
    tomorrow evening to a crest of 29.2 feet Thursday evening. It
    will then fall below flood stage Saturday, June 20.
  - Flood stage is 27.0 feet.



&&


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

Mississippi River
 Chester         27.0    25.4    27.6  28.2  28.7  29.0  29.2



&&

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


$$

ILC149-MOC163-151530-
/O.CON.KLSX.FL.W.0083.000000T0000Z-260620T0712Z/
/LUSM7.1.ER.260612T1715Z.260616T1800Z.260619T0112Z.NO/
1020 PM CDT Sat Jun 13 2026

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

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

* WHERE...Mississippi River at Louisiana.

* WHEN...Until late Friday night.

* IMPACTS...At 17.0 feet, The parking area at the boat house floods.

* ADDITIONAL DETAILS...
  - At 10:00 PM CDT Saturday the stage was 16.2 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 10:00 PM CDT Saturday was 16.2 feet.
  - Forecast...The river is expected to rise to a crest of 16.7 feet
    early Tuesday afternoon. It will then fall below flood stage
    Thursday evening.
  - Flood stage is 15.0 feet.



&&


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

Mississippi River
 Louisiana       15.0    16.2    16.4  16.6  16.7  16.0  14.0



&&

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


$$

19
606 
WGUS83 KLSX 141625
FLSLSX

Flood Statement
National Weather Service St Louis MO
1125 AM CDT Sun Jun 14 2026

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

  Mississippi River at Hannibal.

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

  Mississippi River at Clarksville.

  Mississippi River at Louisiana.

  Mississippi River at Saverton.

  Mississippi River at Winfield.

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

&&

ILC149-MOC127-160430-
/O.EXT.KLSX.FL.W.0087.000000T0000Z-260619T0200Z/
/HNNM7.1.ER.260613T1950Z.260616T1200Z.260617T2000Z.NO/
1125 AM CDT Sun Jun 14 2026

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

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

* WHERE...Mississippi River at Hannibal.

* WHEN...Until Thursday evening.

* IMPACTS...At 18.0 feet, The northern end of Southside Recreation #2
  Park along Bear Creek begins flooding at this height. Gate wells
  are shut down to prevent the sewers from backing up.  Also at this
  level pumps are set to standby.

* ADDITIONAL DETAILS...
  - At 10:15 AM CDT Sunday the stage was 17.0 feet.
  - Recent Activity...The river rose above flood stage on June 13,
    peaking at 17.1 feet.
  - Forecast...The river is expected to rise to a crest of 17.6 feet
    Tuesday morning. It will then fall below flood stage Wednesday
    afternoon.
  - Flood stage is 17.0 feet.



&&


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

Mississippi River
 Hannibal        17.0    17.0    17.3  17.6  17.4  16.0  14.3



&&

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


$$

ILC013-MOC163-160430-
/O.EXT.KLSX.FL.W.0084.000000T0000Z-260620T0834Z/
/CLKM7.1.ER.260613T0630Z.260617T0600Z.260619T0234Z.NO/
1125 AM CDT Sun Jun 14 2026

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

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

* WHERE...Mississippi River at Clarksville.

* WHEN...Until late Friday night.

* IMPACTS...At 27.2 feet, Silo Park just northwest of Clarksville off
  Highway 79 begins flooding.

* ADDITIONAL DETAILS...
  - At 11:00 AM CDT Sunday the stage was 25.8 feet and rising.
  - Recent Activity...The river rose above flood stage on June 13.
  - Forecast...The river is expected to rise to a crest of 27.1 feet
    early Wednesday morning. It will then fall below flood stage late
    Thursday evening.
  - Flood stage is 25.0 feet.



&&


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

Mississippi River
 Clarksville     25.0    25.8    26.2  26.8  27.1  26.3  24.0



&&

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


$$

ILC149-MOC163-160430-
/O.EXT.KLSX.FL.W.0083.000000T0000Z-260620T0500Z/
/LUSM7.1.ER.260612T1715Z.260616T1800Z.260618T2300Z.NO/
1125 AM CDT Sun Jun 14 2026

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

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

* WHERE...Mississippi River at Louisiana.

* WHEN...Until late Friday night.

* IMPACTS...At 17.0 feet, The parking area at the boat house floods.

* ADDITIONAL DETAILS...
  - At 11:00 AM CDT Sunday the stage was 16.2 feet.
  - Recent Activity...The river rose above flood stage on June 12.
  - Forecast...The river is expected to rise to a crest of 17.0 feet
    early Tuesday afternoon. It will then fall below flood stage
    Thursday evening.
  - Flood stage is 15.0 feet.



&&


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

Mississippi River
 Louisiana       15.0    16.2    16.5  16.9  17.0  16.0  13.8



&&

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


$$

ILC149-MOC173-160430-
/O.EXT.KLSX.FL.W.0089.260615T1200Z-260619T0730Z/
/SVRM7.1.ER.260615T1200Z.260616T1800Z.260618T0130Z.NO/
1125 AM CDT Sun Jun 14 2026

...FLOOD WARNING NOW IN EFFECT FROM MONDAY MORNING TO LATE THURSDAY
NIGHT...

* WHAT...Minor flooding is forecast.

* WHERE...Mississippi River at Saverton.

* WHEN...From Monday morning to late Thursday night.

* IMPACTS...At 15.5 feet, An access road to riverside raised homes on
  the riverward side of the Sny levee begins to flood near this
  level.

* ADDITIONAL DETAILS...
  - At 6:00 AM CDT Sunday the stage was 15.6 feet.
  - Forecast...The river is expected to rise above flood stage
    tomorrow morning to a crest of 16.7 feet early Tuesday afternoon.
    It will then fall below flood stage Wednesday evening.
  - Flood stage is 16.0 feet.



&&


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

Mississippi River
 Saverton        16.0    15.6    16.0  16.6  16.6  15.2  12.8



&&

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


$$

ILC013-MOC113-160430-
/O.EXT.KLSX.FL.W.0090.260615T1800Z-260620T1424Z/
/CAGM7.1.ER.260615T1800Z.260618T0000Z.260619T0824Z.NO/
1125 AM CDT Sun Jun 14 2026

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

* WHAT...Minor flooding is forecast.

* WHERE...Mississippi River at Winfield.

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

* IMPACTS...At 27.5 feet, At this stage, Lock and Dam 25 will
  stockpile 200 tons of sand, 12,000 sandbags, and 10,000 square feet
  of polyethylene plastic as a precaution.

* ADDITIONAL DETAILS...
  - At 11:00 AM CDT Sunday the stage was 25.4 feet and rising.
  - Forecast...The river is expected to rise above flood stage early
    tomorrow afternoon to a crest of 27.0 feet Wednesday evening. It
    will then fall below flood stage early Friday morning.
  - Flood stage is 26.0 feet.



&&


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

Mississippi River
 Winfield        26.0    25.4    25.8  26.3  26.9  26.9  25.7



&&

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


$$

Kimble
339 
WGUS83 KLSX 150114
FLSLSX

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

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

  Mississippi River at Hannibal.

  Mississippi River at Clarksville.

  Mississippi River at Louisiana.

  Mississippi River at Chester.

  Mississippi River at Saverton.

  Mississippi River at Winfield.

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

&&

ILC149-MOC127-161315-
/O.EXT.KLSX.FL.W.0087.000000T0000Z-260619T0000Z/
/HNNM7.1.ER.260613T1950Z.260616T1800Z.260617T1800Z.NO/
814 PM CDT Sun Jun 14 2026

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

* WHAT...Minor flooding is forecast.

* WHERE...Mississippi River at Hannibal.

* WHEN...Until Thursday evening.

* IMPACTS...At 17.0 feet, John Hay Recreation Area on east side
  (inside the Illinois Sny Levee) begins flooding.

* ADDITIONAL DETAILS...
  - At 7:15 PM CDT Sunday the stage was 17.0 feet.
  - Forecast...The river is expected to rise to a crest of 17.4 feet
    early Tuesday afternoon. It will then fall below flood stage
    early Wednesday afternoon.
  - Flood stage is 17.0 feet.



&&


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

Mississippi River
 Hannibal        17.0    17.0    17.3  17.2  15.9  14.3  13.2



&&

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


$$

ILC013-MOC163-161315-
/O.EXT.KLSX.FL.W.0084.000000T0000Z-260620T0800Z/
/CLKM7.1.ER.260613T0630Z.260617T0000Z.260619T0200Z.NO/
814 PM CDT Sun Jun 14 2026

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

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

* WHERE...Mississippi River at Clarksville.

* WHEN...Until late Friday night.

* IMPACTS...At 27.2 feet, Silo Park just northwest of Clarksville off
  Highway 79 begins flooding.

* ADDITIONAL DETAILS...
  - At 8:00 PM CDT Sunday the stage was 25.9 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 8:00 PM CDT Sunday was 25.9 feet.
  - Forecast...The river is expected to rise to a crest of 26.9 feet
    Tuesday evening. It will then fall below flood stage late
    Thursday evening.
  - Flood stage is 25.0 feet.



&&


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

Mississippi River
 Clarksville     25.0    25.9    26.8  26.9  26.2  23.9  21.8



&&

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


$$

ILC149-MOC163-161315-
/O.EXT.KLSX.FL.W.0083.000000T0000Z-260620T0448Z/
/LUSM7.1.ER.260612T1715Z.260616T1200Z.260618T2248Z.NO/
814 PM CDT Sun Jun 14 2026

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

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

* WHERE...Mississippi River at Louisiana.

* WHEN...Until Friday evening.

* IMPACTS...At 17.0 feet, The parking area at the boat house floods.

* ADDITIONAL DETAILS...
  - At 8:00 PM CDT Sunday the stage was 16.3 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 8:00 PM CDT Sunday was 16.3 feet.
  - Forecast...The river is expected to rise to a crest of 16.8 feet
    Tuesday morning. It will then fall below flood stage Thursday
    afternoon.
  - Flood stage is 15.0 feet.



&&


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

Mississippi River
 Louisiana       15.0    16.3    16.8  16.8  15.9  13.8  12.4



&&

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


$$

ILC077-157-MOC157-186-161315-
/O.EXT.KLSX.FL.W.0088.260615T0800Z-260622T0036Z/
/CHSI2.1.ER.260615T0800Z.260618T1800Z.260620T1836Z.NO/
814 PM CDT Sun Jun 14 2026

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

* WHAT...Minor flooding is forecast.

* WHERE...Mississippi River at Chester.

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

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

* ADDITIONAL DETAILS...
  - At 8:00 PM CDT Sunday the stage was 26.7 feet.
  - Forecast...The river is expected to rise above flood stage late
    tonight to a crest of 29.2 feet early Thursday afternoon. It will
    then fall below flood stage early Saturday afternoon.
  - Flood stage is 27.0 feet.



&&


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

Mississippi River
 Chester         27.0    26.7    28.1  28.7  29.1  29.2  27.9



&&

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


$$

ILC149-MOC173-161315-
/O.EXT.KLSX.FL.W.0089.260615T1800Z-260619T0400Z/
/SVRM7.1.ER.260615T1800Z.260617T0000Z.260617T2200Z.NO/
814 PM CDT Sun Jun 14 2026

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

* WHAT...Minor flooding is forecast.

* WHERE...Mississippi River at Saverton.

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

* IMPACTS...At 15.5 feet, An access road to riverside raised homes on
  the riverward side of the Sny levee begins to flood near this
  level.

* ADDITIONAL DETAILS...
  - At 6:00 AM CDT Sunday the stage was 15.6 feet.
  - Forecast...The river is expected to rise above flood stage early
    tomorrow afternoon to a crest of 16.4 feet Tuesday evening. It
    will then fall below flood stage Wednesday afternoon.
  - Flood stage is 16.0 feet.



&&


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

Mississippi River
 Saverton        16.0    15.6    16.2  16.3  15.0  12.7  11.0



&&

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


$$

ILC013-MOC113-161315-
/O.EXT.KLSX.FL.W.0090.260616T0000Z-260620T1200Z/
/CAGM7.1.ER.260616T0000Z.260617T1800Z.260619T0600Z.NO/
814 PM CDT Sun Jun 14 2026

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

* WHAT...Minor flooding is forecast.

* WHERE...Mississippi River at Winfield.

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

* IMPACTS...At 27.5 feet, At this stage, Lock and Dam 25 will
  stockpile 200 tons of sand, 12,000 sandbags, and 10,000 square feet
  of polyethylene plastic as a precaution.

* ADDITIONAL DETAILS...
  - At 8:00 PM CDT Sunday the stage was 25.5 feet.
  - Forecast...The river is expected to rise above flood stage
    tomorrow evening to a crest of 26.8 feet early Wednesday
    afternoon. It will then fall below flood stage early Friday
    morning.
  - Flood stage is 26.0 feet.



&&


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

Mississippi River
 Winfield        26.0    25.5    26.4  26.7  26.7  25.6  22.2



&&

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


$$

MRB
231 
WGUS83 KLSX 151757
FLSLSX

Flood Statement
National Weather Service St Louis MO
1257 PM CDT Mon Jun 15 2026

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

  Mississippi River at Hannibal.

  Mississippi River at Saverton.

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

ILC149-MOC127-151900-
/O.CAN.KLSX.FL.W.0087.000000T0000Z-260615T1757Z/
/HNNM7.1.ER.260613T1950Z.260614T1730Z.260614T2300Z.NO/
1257 PM CDT Mon Jun 15 2026

...FLOOD WARNING IS CANCELLED...

The Flood Warning is cancelled for
  the Mississippi River at Hannibal.

* ADDITIONAL DETAILS...
  - At 12:15 PM CDT Monday the stage was 16.8 feet.
  - Forecast...The river is expected to stay near a height of 16.8
    feet until late Tuesday evening before gradually falling to a
    height near 12.0 feet on Sunday.



&&


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

Mississippi River
 Hannibal        17.0    16.8    16.7  16.2  15.1  13.6  12.8



&&

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


$$

ILC149-MOC173-151900-
/O.CAN.KLSX.FL.W.0089.260615T1800Z-260615T1757Z/
/SVRM7.1.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1257 PM CDT Mon Jun 15 2026

...FLOOD WARNING IS CANCELLED...

The Flood Warning is cancelled for
  the Mississippi River at Saverton.

* ADDITIONAL DETAILS...
  - At 6:00 AM CDT Monday the stage was 15.4 feet.
  - Forecast...The river is expected to stay near a height of 15.3
    feet until Wednesday afternoon before gradually falling to a
    height near 10.0 feet on Sunday.



&&


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

Mississippi River
 Saverton        16.0    15.4    15.3  15.1  13.5  11.3  10.1



&&

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


$$

Peine

What forecasters said that day

The local office's own words before this river flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS St. Louis, MO wrote its last area forecast discussion before this river flood warning went out at Jun 13, 6:07 AM CDT, 5 hours 34 minutes earlier. Its 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.
Area forecast discussion, Jun 13, 6:07 AM CDT, 5 hours 34 minutes before
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

In the hours before

Local storm report, Jun 13, 11:26 AM CDT, 15 minutes before
Preliminary Local Storm Report
National Weather Service St Louis MO
1126 AM CDT Sat Jun 13 2026

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

0903 PM     Tstm Wnd Dmg     2 NNW Mount Olive       39.10N 89.75W
06/11/2026                   Macoupin           IL   Broadcast Media

            Pictures from Facebook were shared by local
            media of large trees down damaging buildings
            in Lake Ka-ho. Time is estimated.

&&

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 12, 9:36 PM CDTRiver Flood WarningLSXPike7 days
Jun 12, 9:37 PM CDTRiver Flood WarningLSXCalhoun7 days
Jun 13, 9:20 AM CDTAreal Flood AdvisoryLSXAdams2 hr
Jun 13, 10:22 AM CDTAreal Flood AdvisoryLSXBrown, Pike3 hr
Jun 13, 11:43 AM CDTRiver Flood WarningLSXJackson, Randolph21 days
Jun 13, 2:18 PM CDTAreal Flood AdvisoryLSXAdams3 hr
Jun 12, 9:14 PM CDTRiver Flood WarningLSXCallaway, Osage5 days
Jun 13, 6:38 AM CDTRiver Flood WarningLSXMonroe53 hr
Jun 13, 9:26 AM CDTRiver Flood WarningLSXGasconade, Montgomery5 days
Jun 13, 1:48 PM CDTAreal Flood AdvisoryLSXLewis3 hr

Nearby

River Flood Warnings in Illinois, 2026River Flood Warnings in Missouri, 2026Every river flood warning in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.