River Flood Warning 5, NWS St. Louis, MO

580 
WGUS83 KLSX 071753
FLSLSX

Flood Statement
National Weather Service St Louis MO
1153 AM CST Sat Mar 7 2026

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

  Meramec River near Eureka.

  Big River at Byrnesville.

River forecasts are based on observed precipitation and forecast
precipitation for the next 48 hours.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

MOC099-189-090600-
/O.EXT.KLSX.FL.W.0005.000000T0000Z-260312T0534Z/
/ERKM7.1.ER.260307T1051Z.260308T1200Z.260310T2334Z.NO/
1153 AM CST Sat Mar 7 2026

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

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

* WHERE...Meramec River near Eureka.

* WHEN...Until late Wednesday night.

* IMPACTS...At 24.5 feet, The athletic fields at Eureka Senior High
  School begin flooding near this height.

* ADDITIONAL DETAILS...
  - At 11:00 AM CST Saturday the stage was 21.3 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 11:00 AM CST Saturday was 21.3 feet.
  - Forecast...The river is expected to rise to a crest of 24.5 feet
    tomorrow morning. It will then fall below flood stage Tuesday
    evening.
  - Flood stage is 19.0 feet.



&&


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

Meramec River
 Eureka       19.0    21.3    24.5  22.1  21.2  15.8  9.7



&&

LAT...LON 3844 9064 3850 9066 3855 9064 3855 9056
      3850 9056


$$

MOC099-090600-
/O.EXT.KLSX.FL.W.0004.000000T0000Z-260311T1255Z/
/BYRM7.2.ER.260306T0803Z.260307T1445Z.260310T1255Z.UU/
1153 AM CST Sat Mar 7 2026

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

* WHAT...Moderate flooding is occurring and moderate flooding is
  forecast.

* WHERE...Big River at Byrnesville.

* WHEN...Until Wednesday morning.

* IMPACTS...At 22.4 feet, At this level, Twin Rivers Bridge Road must
  be closed.

* ADDITIONAL DETAILS...
  - At 10:45 AM CST Saturday the stage was 22.1 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 10:45 AM CST Saturday was 22.2 feet.
  - Forecast...The river is expected to fall below flood stage
    Tuesday morning and continue falling to 6.1 feet Saturday, March
    14.
  - Flood stage is 16.0 feet.



&&


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

Big River
 Byrnesville  16.0    22.1    19.1  18.6  16.4  8.7   7.1



&&

LAT...LON 3833 9061 3833 9067 3839 9067 3843 9062
      3847 9064 3848 9059 3846 9056 3841 9057
      3840 9061 3837 9062


$$

Fuchs

257 
WGUS83 KLSX 080130
FLSLSX

Flood Statement
National Weather Service St Louis MO
730 PM CST Sat Mar 7 2026

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

  Meramec River at Pacific.

  Meramec River at Valley Park.

  Meramec River near Eureka.

  Big River at Byrnesville.

  Meramec River near Steelville.

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

  Meramec River near Sullivan.

  Meramec River at Fenton.

River forecasts are based on observed precipitation and forecast
precipitation for the next 48 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.

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

&&

MOC071-099-091330-
/O.EXT.KLSX.FL.W.0007.000000T0000Z-260312T0234Z/
/PCFM7.1.ER.260307T2222Z.260308T1200Z.260310T2034Z.NO/
730 PM CST Sat Mar 7 2026

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

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

* WHERE...Meramec River at Pacific.

* WHEN...Until Wednesday evening.

* IMPACTS...At 16.2 feet, Opeechee Beach Road begins flooding.

* ADDITIONAL DETAILS...
  - At 7:00 PM CST Saturday the stage was 15.3 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 7:00 PM CST Saturday was 15.3 feet.
  - Forecast...The river will rise to 16.2 feet early tomorrow
    afternoon. It will then fall early Monday afternoon. It will rise
    to 15.7 feet Tuesday morning. It will then fall below flood stage
    Tuesday afternoon.
  - Flood stage is 15.0 feet.



&&


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

Meramec River
 Pacific      15.0    15.3    15.3  15.7  11.5  5.8   3.9



&&

LAT...LON 3839 9082 3839 9091 3849 9081 3850 9066
      3844 9064 3843 9077


$$

MOC099-189-091330-
/O.EXT.KLSX.FL.W.0006.000000T0000Z-260312T0941Z/
/VLLM7.2.ER.260307T2137Z.260308T1800Z.260311T0341Z.NO/
730 PM CST Sat Mar 7 2026

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

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

* WHERE...Meramec River at Valley Park.

* WHEN...Until late Wednesday night.

* IMPACTS...At 21.0 feet, Water enters the SW corner of Larkin
  Williams and Yarnell Road intersection through a stormwater grate.
  In Valley Park...Marshall Road begins to flood between Tree Court
  Industrial Road and Timberbrook Drive.

* ADDITIONAL DETAILS...
  - At 7:00 PM CST Saturday the stage was 18.8 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 7:00 PM CST Saturday was 18.8 feet.
  - Forecast...The river will rise to 21.0 feet tomorrow evening. It
    will then fall early Tuesday morning. It will rise to 19.6 feet
    Tuesday morning. It will then fall below flood stage late Tuesday
    evening.
  - Flood stage is 18.0 feet.



&&


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

Meramec River
 Valley Park  18.0    18.8    20.1  19.6  16.0  10.1  7.9



&&

LAT...LON 3850 9056 3855 9056 3857 9047 3856 9043
      3853 9042 3853 9051


$$

MOC099-189-091330-
/O.EXT.KLSX.FL.W.0005.000000T0000Z-260312T0840Z/
/ERKM7.1.ER.260307T1051Z.260308T1800Z.260311T0240Z.NO/
730 PM CST Sat Mar 7 2026

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

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

* WHERE...Meramec River near Eureka.

* WHEN...Until late Wednesday night.

* IMPACTS...At 24.5 feet, The athletic fields at Eureka Senior High
  School begin flooding near this height.

* ADDITIONAL DETAILS...
  - At 7:00 PM CST Saturday the stage was 23.1 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 7:00 PM CST Saturday was 23.1 feet.
  - Forecast...The river will rise to 24.3 feet early tomorrow
    afternoon. It will then fall Monday evening. It will rise to 22.2
    feet Tuesday morning. It will then fall below flood stage late
    Tuesday evening.
  - Flood stage is 19.0 feet.



&&


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

Meramec River
 Eureka       19.0    23.1    22.4  22.2  16.1  9.6   7.7



&&

LAT...LON 3844 9064 3850 9066 3855 9064 3855 9056
      3850 9056


$$

MOC099-091330-
/O.EXT.KLSX.FL.W.0004.000000T0000Z-260311T1421Z/
/BYRM7.2.ER.260306T0803Z.260307T1445Z.260310T1421Z.UU/
730 PM CST Sat Mar 7 2026

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

* WHAT...Moderate flooding is occurring and moderate flooding is
  forecast.

* WHERE...Big River at Byrnesville.

* WHEN...Until Wednesday morning.

* IMPACTS...At 20.5 feet, Burgan Grove Road begins flooding near
  Cottage Grove Road, cutting off access to Cottage Grove Road.
  Highway W near Hoene Spring is closed as water crosses the
  pavement.

* ADDITIONAL DETAILS...
  - At 6:45 PM CST Saturday the stage was 20.3 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 6:45 PM CST Saturday was 22.2 feet.
  - Forecast...The river is expected to rise to a crest of 20.2 feet
    early Monday afternoon. It will then fall below flood stage late
    Tuesday morning.
  - Flood stage is 16.0 feet.



&&


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

Big River
 Byrnesville  16.0    20.3    19.7  17.1  8.5   6.8   6.2



&&

LAT...LON 3833 9061 3833 9067 3839 9067 3843 9062
      3847 9064 3848 9059 3846 9056 3841 9057
      3840 9061 3837 9062


$$

MOC055-221-091330-
/O.EXT.KLSX.FL.W.0001.000000T0000Z-260311T0720Z/
/SLLM7.1.ER.260305T1625Z.260306T0859Z.260310T0120Z.UU/
730 PM CST Sat Mar 7 2026

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

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

* WHERE...Meramec River near Sullivan.

* WHEN...Until late Tuesday night.

* IMPACTS...At 17.0 feet, At this height the entire Arapaho
  campground will be under water.

* ADDITIONAL DETAILS...
  - At 6:29 PM CST Saturday the stage was 12.4 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 6:29 PM CST Saturday was 16.3 feet.
  - Forecast...The river is expected to rise to a crest of 16.9 feet
    tomorrow morning. It will then fall below flood stage Monday
    evening.
  - Flood stage is 11.0 feet.



&&


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

Meramec River
 Sullivan     11.0    12.4    13.6  9.5   7.6   6.7   6.1



&&

LAT...LON 3801 9122 3807 9126 3816 9116 3828 9110
      3832 9097 3839 9091 3839 9082 3825 9092
      3823 9105 3808 9111


$$

MOC055-091330-
/O.EXT.KLSX.FL.W.0010.260308T0549Z-260310T0600Z/
/SEEM7.1.ER.260308T0549Z.260308T1200Z.260309T0000Z.NO/
730 PM CST Sat Mar 7 2026

...FLOOD WARNING NOW IN EFFECT FROM THIS EVENING TO LATE MONDAY
NIGHT...

* WHAT...Minor flooding is forecast.

* WHERE...Meramec River near Steelville.

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

* IMPACTS...At 14.0 feet, Near this height, roads to the Lucky Clover
  campgrounds begin to flood.

* ADDITIONAL DETAILS...
  - At 7:15 PM CST Saturday the stage was 9.3 feet.
  - Forecast...The river is expected to rise above flood stage late
    this evening to a crest of 13.9 feet tomorrow morning. It will
    then fall below flood stage tomorrow evening.
  - Flood stage is 12.0 feet.



&&


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

Meramec River
 Steelville   12.0    9.3     9.2   5.6   4.4   3.8   3.5



&&

LAT...LON 3796 9153 3800 9154 3803 9141 3802 9138
      3807 9126 3801 9122 3800 9130 3796 9135


$$

MOC099-189-091330-
/O.EXT.KLSX.FL.W.0008.260309T0600Z-260310T1200Z/
/FNNM7.1.ER.260309T0600Z.260309T0600Z.260309T0600Z.NO/
730 PM CST Sat Mar 7 2026

...FLOOD WARNING NOW IN EFFECT FROM LATE SUNDAY NIGHT TO TUESDAY
MORNING...

* WHAT...Minor flooding is forecast.

* WHERE...Meramec River at Fenton.

* WHEN...From late Sunday night to Tuesday morning.

* IMPACTS...At 22.9 feet, At this height, the entire boat ramp path
  at Minnie Ha Ha Park will be submerged.

* ADDITIONAL DETAILS...
  - At 7:15 PM CST Saturday the stage was 20.2 feet.
  - Forecast...The river will rise to flood stage early Monday
    morning. It will then fall to 21.8 feet Tuesday morning. It will
    rise to 21.9 feet early Tuesday afternoon. It will then fall
    again and remain below flood stage.
  - Flood stage is 23.0 feet.



&&


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

Meramec River
 Fenton       23.0    20.2    22.8  21.8  20.3  14.2  12.8



&&

LAT...LON 3853 9045 3853 9041 3851 9040 3847 9040
      3847 9044 3848 9044 3849 9042 3851 9045


$$

Elmore

001 
WGUS83 KLSX 081502
FLSLSX

Flood Statement
National Weather Service St Louis MO
1002 AM CDT Sun Mar 8 2026

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

  Meramec River near Steelville.

  Meramec River at Pacific.

  Meramec River at Valley Park.

  Meramec River near Eureka.

  Big River at Byrnesville.

  Meramec River near Sullivan.

River forecasts are based on observed precipitation and forecast
precipitation for the next 48 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.

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

&&

MOC055-100315-
/O.EXT.KLSX.FL.W.0010.000000T0000Z-260310T0338Z/
/SEEM7.1.ER.260308T0954Z.260308T1800Z.260308T2138Z.NO/
1002 AM CDT Sun Mar 8 2026

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

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

* WHERE...Meramec River near Steelville.

* WHEN...Until Monday evening.

* IMPACTS...At 14.0 feet, Near this height, roads to the Lucky Clover
  campgrounds begin to flood.

* ADDITIONAL DETAILS...
  - At 9:15 AM CDT Sunday the stage was 13.4 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 9:15 AM CDT Sunday was 13.4 feet.
  - Forecast...The river is expected to rise to a crest of 14.0 feet
    this afternoon. It will then fall below flood stage late this
    afternoon.
  - Flood stage is 12.0 feet.



&&


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

Meramec River
 Steelville   12.0    13.4    7.6   4.8   4.2   3.6   3.5



&&

LAT...LON 3796 9153 3800 9154 3803 9141 3802 9138
      3807 9126 3801 9122 3800 9130 3796 9135


$$

MOC071-099-100315-
/O.EXT.KLSX.FL.W.0007.000000T0000Z-260311T1500Z/
/PCFM7.1.ER.260307T2222Z.260308T0830Z.260310T0900Z.NO/
1002 AM CDT Sun Mar 8 2026

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

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

* WHERE...Meramec River at Pacific.

* WHEN...Until Wednesday morning.

* IMPACTS...At 15.4 feet, Hunters Ford Road is closed near this
  height.

* ADDITIONAL DETAILS...
  - At 9:30 AM CDT Sunday the stage was 15.5 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 9:30 AM CDT Sunday was 15.8 feet.
  - Forecast...The river is expected to fall below flood stage early
    Tuesday morning and continue falling to 2.5 feet Saturday
    morning.
  - Flood stage is 15.0 feet.



&&


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

Meramec River
 Pacific      15.0    15.5    15.0  14.8  10.1  4.3   3.2



&&

LAT...LON 3839 9082 3839 9091 3849 9081 3850 9066
      3844 9064 3843 9077


$$

MOC099-189-100315-
/O.EXT.KLSX.FL.W.0006.000000T0000Z-260312T0138Z/
/VLLM7.1.ER.260307T2137Z.260308T1800Z.260310T1938Z.NO/
1002 AM CDT Sun Mar 8 2026

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

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

* WHERE...Meramec River at Valley Park.

* WHEN...Until Wednesday evening.

* IMPACTS...At 21.0 feet, Water enters the SW corner of Larkin
  Williams and Yarnell Road intersection through a stormwater grate.
  In Valley Park...Marshall Road begins to flood between Tree Court
  Industrial Road and Timberbrook Drive.

* ADDITIONAL DETAILS...
  - At 9:30 AM CDT Sunday the stage was 20.2 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 9:30 AM CDT Sunday was 20.2 feet.
  - Forecast...The river is expected to rise to a crest of 20.3 feet
    this afternoon. It will then fall below flood stage early Tuesday
    afternoon.
  - Flood stage is 18.0 feet.



&&


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

Meramec River
 Valley Park  18.0    20.2    19.5  18.8  14.7  8.1   6.5



&&

LAT...LON 3850 9056 3855 9056 3857 9047 3856 9043
      3853 9042 3853 9051


$$

MOC099-189-100315-
/O.EXT.KLSX.FL.W.0005.000000T0000Z-260312T0130Z/
/ERKM7.1.ER.260307T1051Z.260308T0800Z.260310T1930Z.NO/
1002 AM CDT Sun Mar 8 2026

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

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

* WHERE...Meramec River near Eureka.

* WHEN...Until Wednesday evening.

* IMPACTS...At 23.8 feet, Spring River Ranch Road begins flooding
  near this height on the east end.

* ADDITIONAL DETAILS...
  - At 9:30 AM CDT Sunday the stage was 23.3 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 9:30 AM CDT Sunday was 23.6 feet.
  - Forecast...The river is expected to fall below flood stage early
    Tuesday afternoon and continue falling to 6.6 feet Saturday
    morning.
  - Flood stage is 19.0 feet.



&&


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

Meramec River
 Eureka       19.0    23.3    21.3  20.7  14.6  8.4   7.2



&&

LAT...LON 3844 9064 3850 9066 3855 9064 3855 9056
      3850 9056


$$

MOC099-100315-
/O.EXT.KLSX.FL.W.0004.000000T0000Z-260311T0813Z/
/BYRM7.2.ER.260306T0803Z.260307T1445Z.260310T0813Z.UU/
1002 AM CDT Sun Mar 8 2026

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

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

* WHERE...Big River at Byrnesville.

* WHEN...Until late Tuesday night.

* IMPACTS...At 19.3 feet, South Byrnesville Road begins flooding near
  this level.

* ADDITIONAL DETAILS...
  - At 9:45 AM CDT Sunday the stage was 17.5 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 9:45 AM CDT Sunday was 19.6 feet.
  - Forecast...The river is expected to rise to a crest of 19.6 feet
    tomorrow morning. It will then fall below flood stage early
    Tuesday morning.
  - Flood stage is 16.0 feet.



&&


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

Big River
 Byrnesville  16.0    17.5    19.6  14.3  8.6   7.0   6.4



&&

LAT...LON 3833 9061 3833 9067 3839 9067 3843 9062
      3847 9064 3848 9059 3846 9056 3841 9057
      3840 9061 3837 9062


$$

MOC055-221-100315-
/O.EXT.KLSX.FL.W.0001.000000T0000Z-260310T2215Z/
/SLLM7.1.ER.260305T1625Z.260306T0859Z.260309T1615Z.UU/
1002 AM CDT Sun Mar 8 2026

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

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

* WHERE...Meramec River near Sullivan.

* WHEN...Until Tuesday afternoon.

* IMPACTS...At 18.5 feet, Near this height, Missouri Route N will be
  closed in both directions.

* ADDITIONAL DETAILS...
  - At 9:29 AM CDT Sunday the stage was 18.2 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 9:29 AM CDT Sunday was 18.2 feet.
  - Forecast...The river is expected to rise to a crest of 18.3 feet
    this afternoon. It will then fall below flood stage late tomorrow
    morning.
  - Flood stage is 11.0 feet.



&&


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

Meramec River
 Sullivan     11.0    18.2    12.7  7.4   6.7   6.2   5.8



&&

LAT...LON 3801 9122 3807 9126 3816 9116 3828 9110
      3832 9097 3839 9091 3839 9082 3825 9092
      3823 9105 3808 9111


$$

Delia

615 
WGUS83 KLSX 090202
FLSLSX

Flood Statement
National Weather Service St Louis MO
902 PM CDT Sun Mar 8 2026

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

  Meramec River at Valley Park.

  Meramec River near Eureka.

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

  Meramec River near Sullivan.

River forecasts are based on observed precipitation and forecast
precipitation for the next 48 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.

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

&&

MOC099-189-101415-
/O.EXT.KLSX.FL.W.0006.000000T0000Z-260311T1630Z/
/VLLM7.1.ER.260307T2137Z.260308T1730Z.260310T1030Z.NO/
902 PM CDT Sun Mar 8 2026

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

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

* WHERE...Meramec River at Valley Park.

* WHEN...Until Wednesday morning.

* IMPACTS...At 21.0 feet, Water enters the SW corner of Larkin
  Williams and Yarnell Road intersection through a stormwater grate.
  In Valley Park...Marshall Road begins to flood between Tree Court
  Industrial Road and Timberbrook Drive.

* ADDITIONAL DETAILS...
  - At 8:30 PM CDT Sunday the stage was 20.3 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 8:30 PM CDT Sunday was 20.5 feet.
  - Forecast...The river is expected to fall below flood stage early
    Tuesday morning and continue falling to 4.9 feet Saturday
    evening.
  - Flood stage is 18.0 feet.



&&


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

Meramec River
 Valley Park  18.0    20.3    17.9  14.7  8.1   6.5   5.2



&&

LAT...LON 3850 9056 3855 9056 3857 9047 3856 9043
      3853 9042 3853 9051


$$

MOC099-189-101415-
/O.EXT.KLSX.FL.W.0005.000000T0000Z-260311T2221Z/
/ERKM7.1.ER.260307T1051Z.260308T0800Z.260310T1621Z.NO/
902 PM CDT Sun Mar 8 2026

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

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

* WHERE...Meramec River near Eureka.

* WHEN...Until Wednesday afternoon.

* IMPACTS...At 22.0 feet, Willman Road near the Highway 109 bridge
  becomes inundated and impassable.

* ADDITIONAL DETAILS...
  - At 8:30 PM CDT Sunday the stage was 22.1 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 8:30 PM CDT Sunday was 23.6 feet.
  - Forecast...The river is expected to fall below flood stage late
    Tuesday morning and continue falling to 6.5 feet Saturday
    evening.
  - Flood stage is 19.0 feet.



&&


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

Meramec River
 Eureka       19.0    22.1    19.8  14.7  9.3   7.7   6.9



&&

LAT...LON 3844 9064 3850 9066 3855 9064 3855 9056
      3850 9056


$$

MOC055-221-101415-
/O.EXT.KLSX.FL.W.0001.000000T0000Z-260310T2225Z/
/SLLM7.1.ER.260305T1625Z.260306T0859Z.260309T1625Z.UU/
902 PM CDT Sun Mar 8 2026

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

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

* WHERE...Meramec River near Sullivan.

* WHEN...Until Tuesday afternoon.

* IMPACTS...At 15.6 feet, The basic loop of the Onondaga Cave State
  Park campground begins flooding near this height.

* ADDITIONAL DETAILS...
  - At 8:29 PM CDT Sunday the stage was 15.2 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 8:29 PM CDT Sunday was 18.2 feet.
  - Forecast...The river is expected to fall below flood stage late
    tomorrow morning and continue falling to 5.8 feet Saturday
    evening.
  - Flood stage is 11.0 feet.



&&


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

Meramec River
 Sullivan     11.0    15.2    7.5   7.2   6.7   6.3   6.0



&&

LAT...LON 3801 9122 3807 9126 3816 9116 3828 9110
      3832 9097 3839 9091 3839 9082 3825 9092
      3823 9105 3808 9111


$$

Maples

767 
WGUS83 KLSX 091505
FLSLSX

Flood Statement
National Weather Service St Louis MO
1005 AM CDT Mon Mar 9 2026

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

  Kaskaskia River at Carlyle.

  Meramec River at Valley Park.

  Meramec River near Eureka.

  Meramec River near Sullivan.

River forecasts are based on observed precipitation and forecast
precipitation for the next 48 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.

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

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

&&

ILC027-110315-
/O.EXT.KLSX.FL.W.0012.000000T0000Z-260315T1930Z/
/KCAI2.1.ER.260308T0700Z.260309T1800Z.260314T1330Z.NO/
1005 AM CDT Mon Mar 9 2026

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

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

* WHERE...Kaskaskia River at Carlyle.

* WHEN...Until Sunday afternoon.

* IMPACTS...At 16.5 feet, Near this height, downstream agricultural
  fields begin flooding.

* ADDITIONAL DETAILS...
  - At 9:30 AM CDT Monday the stage was 16.8 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 9:30 AM CDT Monday was 16.9 feet.
  - Forecast...The river is expected to rise to a crest of 16.9 feet
    this afternoon. It will then fall below flood stage Saturday
    morning.
  - Flood stage is 16.5 feet.



&&


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

Kaskaskia River
 Carlyle       16.5    16.8    16.9  16.9  16.9  16.9  16.9



&&

LAT...LON 3862 8936 3861 8933 3851 8937 3849 8942
      3854 8942


$$

MOC099-189-110315-
/O.EXT.KLSX.FL.W.0006.000000T0000Z-260312T0936Z/
/VLLM7.1.ER.260307T2137Z.260308T1730Z.260311T0336Z.NO/
1005 AM CDT Mon Mar 9 2026

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

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

* WHERE...Meramec River at Valley Park.

* WHEN...Until late Wednesday night.

* IMPACTS...At 19.5 feet, Buder Park and the recreation park at the
  water plant floods.

* ADDITIONAL DETAILS...
  - At 9:30 AM CDT Monday the stage was 19.4 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 9:30 AM CDT Monday was 20.5 feet.
  - Forecast...The river is expected to fall below flood stage late
    tomorrow evening and continue falling to 5.6 feet Sunday morning.
  - Flood stage is 18.0 feet.



&&


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

Meramec River
 Valley Park  18.0    19.4    19.1  16.6  10.8  5.9   5.2



&&

LAT...LON 3850 9056 3855 9056 3857 9047 3856 9043
      3853 9042 3853 9051


$$

MOC099-189-110315-
/O.EXT.KLSX.FL.W.0005.000000T0000Z-260312T0941Z/
/ERKM7.1.ER.260307T1051Z.260308T0800Z.260311T0341Z.NO/
1005 AM CDT Mon Mar 9 2026

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

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

* WHERE...Meramec River near Eureka.

* WHEN...Until late Wednesday night.

* IMPACTS...At 22.0 feet, Willman Road near the Highway 109 bridge
  becomes inundated and impassable.

* ADDITIONAL DETAILS...
  - At 9:30 AM CDT Monday the stage was 21.3 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 9:30 AM CDT Monday was 23.2 feet.
  - Forecast...The river will fall to 21.2 feet this afternoon. It
    will then rise to 21.7 feet tomorrow morning. It will fall below
    flood stage late tomorrow evening to 8.3 feet early Saturday
    afternoon then rise again.
  - Flood stage is 19.0 feet.



&&


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

Meramec River
 Eureka       19.0    21.3    21.7  17.3  11.3  8.4   8.3



&&

LAT...LON 3844 9064 3850 9066 3855 9064 3855 9056
      3850 9056


$$

MOC055-221-110145-
/O.EXT.KLSX.FL.W.0001.000000T0000Z-260311T0145Z/
/SLLM7.1.ER.260305T1625Z.260306T0859Z.260309T1945Z.UU/
1005 AM CDT Mon Mar 9 2026

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

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

* WHERE...Meramec River near Sullivan.

* WHEN...Until Tuesday evening.

* IMPACTS...At 13.5 feet, Cave Road begins flooding at Onondaga Cave
  State Park near this height.

* ADDITIONAL DETAILS...
  - At 9:29 AM CDT Monday the stage was 13.5 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 9:29 AM CDT Monday was 18.2 feet.
  - Forecast...The river is expected to fall below flood stage this
    afternoon and continue falling to 5.6 feet Sunday morning.
  - Flood stage is 11.0 feet.



&&


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

Meramec River
 Sullivan     11.0    13.5    7.9   7.2   6.9   6.5   5.9



&&

LAT...LON 3801 9122 3807 9126 3816 9116 3828 9110
      3832 9097 3839 9091 3839 9082 3825 9092
      3823 9105 3808 9111


$$

MRB

791 
WGUS83 KLSX 100055
FLSLSX

Flood Statement
National Weather Service St Louis MO
755 PM CDT Mon Mar 9 2026

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

  Kaskaskia River at Carlyle.

  Big River at Byrnesville.

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

  Meramec River at Valley Park.

  Meramec River near Eureka.

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

  Meramec River near Sullivan.

River forecasts are based on observed precipitation and forecast
precipitation for the next 48 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.

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

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

&&

MOC055-221-100200-
/O.CAN.KLSX.FL.W.0001.000000T0000Z-260310T0055Z/
/SLLM7.1.ER.260305T1625Z.260306T0859Z.260309T1700Z.UU/
755 PM CDT Mon Mar 9 2026

...FLOOD WARNING IS CANCELLED...

The Flood Warning is cancelled for
  the Meramec River near Sullivan.

* ADDITIONAL DETAILS...
  - At 7:29 PM CDT Monday the stage was 8.6 feet.
  - Forecast...The river is expected to fall to 5.7 feet Sunday
    evening.



&&


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

Meramec River
 Sullivan     11.0    8.6     7.0   7.1   7.4   6.4   5.9



&&

LAT...LON 3801 9122 3807 9126 3816 9116 3828 9110
      3832 9097 3839 9091 3839 9082 3825 9092
      3823 9105 3808 9111


$$

ILC027-111300-
/O.EXT.KLSX.FL.W.0012.000000T0000Z-260315T1912Z/
/KCAI2.1.ER.260308T0700Z.260309T1515Z.260314T1312Z.NO/
755 PM CDT Mon Mar 9 2026

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

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

* WHERE...Kaskaskia River at Carlyle.

* WHEN...Until Sunday afternoon.

* IMPACTS...At 16.5 feet, Near this height, downstream agricultural
  fields begin flooding.

* ADDITIONAL DETAILS...
  - At 7:30 PM CDT Monday the stage was 16.8 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 7:30 PM CDT Monday was 16.9 feet.
  - Forecast...The river is expected to fall below flood stage
    Saturday morning and continue falling to 12.8 feet Monday, March
    16.
  - Flood stage is 16.5 feet.



&&


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

Kaskaskia River
 Carlyle       16.5    16.8    16.8  16.8  16.8  16.8  15.3



&&

LAT...LON 3862 8936 3861 8933 3851 8937 3849 8942
      3854 8942


$$

MOC099-189-111300-
/O.EXT.KLSX.FL.W.0006.000000T0000Z-260312T1330Z/
/VLLM7.1.ER.260307T2137Z.260308T1730Z.260311T0730Z.NO/
755 PM CDT Mon Mar 9 2026

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

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

* WHERE...Meramec River at Valley Park.

* WHEN...Until Thursday morning.

* IMPACTS...At 19.5 feet, Buder Park and the recreation park at the
  water plant floods.

* ADDITIONAL DETAILS...
  - At 7:30 PM CDT Monday the stage was 19.4 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 7:30 PM CDT Monday was 20.3 feet.
  - Forecast...The river will rise to 19.9 feet tomorrow morning. It
    will then fall below flood stage early Wednesday morning to 7.0
    feet Saturday morning. It will rise to 7.1 feet Saturday evening.
    It will then fall again and remain below flood stage.
  - Flood stage is 18.0 feet.



&&


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

Meramec River
 Valley Park  18.0    19.4    17.1  10.5  7.2   7.0   6.8



&&

LAT...LON 3850 9056 3855 9056 3857 9047 3856 9043
      3853 9042 3853 9051


$$

MOC099-189-111300-
/O.EXT.KLSX.FL.W.0005.000000T0000Z-260312T1132Z/
/ERKM7.1.ER.260307T1051Z.260308T0800Z.260311T0532Z.NO/
755 PM CDT Mon Mar 9 2026

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

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

* WHERE...Meramec River near Eureka.

* WHEN...Until Thursday morning.

* IMPACTS...At 22.0 feet, Willman Road near the Highway 109 bridge
  becomes inundated and impassable.

* 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 22.1 feet.
  - Forecast...The river is expected to rise to a crest of 22.2 feet
    just after midnight tonight. 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

Meramec River
 Eureka       19.0    22.0    17.5  10.8  9.2   9.3   8.9



&&

LAT...LON 3844 9064 3850 9066 3855 9064 3855 9056
      3850 9056


$$

MOC099-110730-
/O.EXT.KLSX.FL.W.0004.000000T0000Z-260311T0723Z/
/BYRM7.2.ER.260306T0803Z.260307T1445Z.260310T0723Z.UU/
755 PM CDT Mon Mar 9 2026

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

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

* WHERE...Big River at Byrnesville.

* WHEN...Until late Tuesday night.

* IMPACTS...At 19.0 feet, Dutch Creek Road south of Byrnesville and
  Byrnesville Road near John McKeever Road north of Byrnesville begin
  to flood.

* ADDITIONAL DETAILS...
  - At 6:45 PM CDT Monday the stage was 18.8 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 6:45 PM CDT Monday was 20.2 feet.
  - Forecast...The river is expected to fall below flood stage just
    after midnight tonight and continue falling to 5.6 feet Monday,
    March 16.
  - Flood stage is 16.0 feet.



&&


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

Big River
 Byrnesville  16.0    18.8    8.1   7.2   7.6   7.6   6.4



&&

LAT...LON 3833 9061 3833 9067 3839 9067 3843 9062
      3847 9064 3848 9059 3846 9056 3841 9057
      3840 9061 3837 9062


$$

Elmore

443 
WGUS83 KLSX 101430
FLSLSX

Flood Statement
National Weather Service St Louis MO
930 AM CDT Tue Mar 10 2026

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

  Meramec River at Valley Park.

  Meramec River near Eureka.

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

  Meramec River at Pacific.

River forecasts are based on observed precipitation and forecast
precipitation for the next 48 hours.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

MOC071-099-101530-
/O.CAN.KLSX.FL.W.0013.000000T0000Z-260310T1430Z/
/PCFM7.1.ER.260310T0250Z.260310T0500Z.260310T0822Z.NO/
930 AM CDT Tue Mar 10 2026

...FLOOD WARNING IS CANCELLED...

The Flood Warning is cancelled for
  the Meramec River at Pacific.

* ADDITIONAL DETAILS...
  - At 9:00 AM CDT Tuesday the stage was 14.4 feet.
  - Forecast...The river is expected to fall to 4.8 feet Monday
    morning.



&&


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

Meramec River
 Pacific      15.0    14.4    11.1  5.2   4.5   5.6   6.5



&&

LAT...LON 3839 9082 3839 9091 3849 9081 3850 9066
      3844 9064 3843 9077


$$

MOC099-189-120230-
/O.EXT.KLSX.FL.W.0006.000000T0000Z-260312T0846Z/
/VLLM7.1.ER.260307T2137Z.260308T1730Z.260311T0246Z.NO/
930 AM CDT Tue Mar 10 2026

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

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

* WHERE...Meramec River at Valley Park.

* WHEN...Until late Wednesday night.

* IMPACTS...At 19.5 feet, Buder Park and the recreation park at the
  water plant floods.

* ADDITIONAL DETAILS...
  - At 9:00 AM CDT Tuesday the stage was 19.6 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 9:00 AM CDT Tuesday was 19.8 feet.
  - Forecast...The river is expected to fall below flood stage late
    this evening and continue falling to 5.9 feet Monday morning.
  - Flood stage is 18.0 feet.



&&


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

Meramec River
 Valley Park  18.0    19.6    15.9  10.1  7.5   7.2   7.4



&&

LAT...LON 3850 9056 3855 9056 3857 9047 3856 9043
      3853 9042 3853 9051


$$

MOC099-189-120230-
/O.EXT.KLSX.FL.W.0005.000000T0000Z-260312T0400Z/
/ERKM7.1.ER.260307T1051Z.260308T0800Z.260310T2200Z.NO/
930 AM CDT Tue Mar 10 2026

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

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

* WHERE...Meramec River near Eureka.

* WHEN...Until Wednesday evening.

* IMPACTS...At 21.0 feet, West Spring River Road becomes inundated at
  this height.

* ADDITIONAL DETAILS...
  - At 9:00 AM CDT Tuesday the stage was 20.7 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 9:00 AM CDT Tuesday was 22.2 feet.
  - Forecast...The river is expected to fall below flood stage late
    this afternoon and continue falling to 8.4 feet Monday morning.
  - Flood stage is 19.0 feet.



&&


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

Meramec River
 Eureka       19.0    20.7    15.9  10.8  9.7   9.9   9.8



&&

LAT...LON 3844 9064 3850 9066 3855 9064 3855 9056
      3850 9056


$$

Pfahler

244 
WGUS83 KLSX 111555
FLSLSX

Flood Statement
National Weather Service St Louis MO
1055 AM CDT Wed Mar 11 2026

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

  Meramec River at Valley Park.

  Meramec River near Eureka.

River forecasts are based on observed precipitation and forecast
precipitation for the next 48 hours.

MOC099-189-111700-
/O.CAN.KLSX.FL.W.0006.000000T0000Z-260311T1555Z/
/VLLM7.1.ER.260307T2137Z.260308T1730Z.260310T2245Z.NO/
1055 AM CDT Wed Mar 11 2026

...FLOOD WARNING IS CANCELLED...

The Flood Warning is cancelled for
  the Meramec River at Valley Park.

* ADDITIONAL DETAILS...
  - At 10:30 AM CDT Wednesday the stage was 10.6 feet.
  - Forecast...The river is expected to fall to 6.8 feet Friday
    morning.



&&


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

Meramec River
 Valley Park  18.0    10.6    6.8   7.9   8.8   7.5   5.1



&&

LAT...LON 3850 9056 3855 9056 3857 9047 3856 9043
      3853 9042 3853 9051


$$

MOC099-189-111700-
/O.CAN.KLSX.FL.W.0005.000000T0000Z-260311T1555Z/
/ERKM7.1.ER.260307T1051Z.260308T0800Z.260310T1941Z.NO/
1055 AM CDT Wed Mar 11 2026

...FLOOD WARNING IS CANCELLED...

The Flood Warning is cancelled for
  the Meramec River near Eureka.

* ADDITIONAL DETAILS...
  - At 10:30 AM CDT Wednesday the stage was 9.8 feet.
  - Forecast...The river is expected to fall to near 8.4 feet Friday
    morning.



&&


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

Meramec River
 Eureka       19.0    9.8     8.6   8.4   8.3   8.1   7.3



&&

LAT...LON 3844 9064 3850 9066 3855 9064 3855 9056
      3850 9056


$$

Gosselin

Area Forecast Discussion...Updated Aviation
National Weather Service Saint Louis MO
554 PM CST Fri Mar 6 2026

.KEY MESSAGES...

- Thunderstorms will move into the area tonight. One or two may be
  severe between midnight and 6am in northeast MO, southeast MO,
  and west-central IL. Damaging winds and a brief tornado are the primary
  hazards.

- This weekend will be dry and breezy. Temperatures will drop
  during the day Saturday behind a cold front.

- There is another chance of showers and thunderstorms Tuesday into
  Wednesday.

&&

.SHORT TERM...  (Through Late Saturday Night)
Issued at 255 PM CST Fri Mar 6 2026

20z surface analysis shows a low pressure system in central Kansas
with a dryline extending south through the OK and TX and a cold
front bending back into Colorado. The stationary front that brought
us persistent cloud cover all week now sits in the Upper Midwest,
leaving the Mid-Mississippi Valley within an open warm sector. To
call it warm is nearly an understatement. Temperatures have rocketed
through the morning, with KSTL reporting 79 degrees at noon, 6
degrees from a record high. Even a cloudy, rain-soaked Kirksville
reaching 69 degrees at the same time. This airmass is also very
moist. Dewpoints in the upper 50s and low-60s have taken hold across
the region, with KSTL even breaking their daily high dewpoint record
at noon (61 degrees breaks old record of 60 degrees set in
1974/1973). If this site reaches 65 degrees, it will be the earliest
65 degree dewpoint of the year on record (current earliest: March
8th, 1974).

All of this warmth and moisture has resulted in increased
instability, though where that instability lies in the thermal
profile will likely wobble between this afternoon and tomorrow
morning. As of noon, all guidance and the behavior of ongoing
convection in western and north-central MO suggest it's elevated in
nature. Farther south and southeast, ACARS soundings as well as a
visible developing cu-field show that destabilization is occurring
in the region with about 1500 J/kg of SBCAPE present, but this is so
far away from any forcing that thunderstorm development is slim to
none. The points of interest this afternoon lie in 1) how ongoing
convection will affect the environment for tonight and 2) how
thunderstorms firing in Oklahoma will evolve as they enter southern
Missouri this evening. Confidence is high that discrete supercells
will weaken and congeal as they move farther in time and space from
a more favorable environment. How quickly they weaken will directly
determine tonight's potential hazards. If they remain discrete for
longer, all hazards are on the table including damaging wind, a
brief tornado, and large hail. If they congeal into a/a few bowing
segment(s) and remain strong this far northeast, damaging wind and a
brief tornado will be the primary threats. The last scenario is that
the supercells congeal and weaken substantially before they arrive
in southeast Missouri. In this case, damaging wind and a brief
tornado are still the primary hazards, but the chance of them
occurring is lower than otherwise.

The thunderstorms mentioned above will reach the forecast area ahead
of additional thunderstorms lining a cold front. Although guidance
is still highly variable concerning exact timing and strength of
everything, one constant is that discrete convection in eastern
Kansas will congeal into a QLCS and weaken by the time it arrives in
central and northeast Missouri by 07-08z due to waning daytime
instability. This deterioration may also be aided by the arrival of
the pre-frontal thunderstorms eating up the little remaining
instability left, but this is uncertain. In fact, the two systems
merging may create a brief uptick in intensity before they ruin each
other completely. In short, this is an ever-evolving situation.
Although our confidence in severe weather occurring tonight is
decreasing, the environment this afternoon and evening will need to
be monitored closely for any changes.

Showers and thunderstorms won't exit the area completely until
nearly noon tomorrow, late enough for daytime instability to build
back up and for additional showers to fire along the 925 mb front.
These showers are expected to develop into thunderstorms with time,
but that likely won't occur until they exit our CWA completely to
the southeast in the early afternoon. What will be more noticeable
tomorrow are the falling temperatures through the day. 24 hour
high temperatures for all but southeast Missouri and southwest
Illinois will occur near midnight, with afternoon "highs" only
reaching the 40s and 50s for the northwestern half of the CWA.
This is 20 - 30 degrees cooler than today's near record warmth,
and breezy conditions will make that apparent.

Jaja

&&

.LONG TERM...  (Sunday through Next Friday)
Issued at 255 PM CST Fri Mar 6 2026

Saturday's cooler weather won't last long. By Sunday, afternoon
temperatures will rebound into the 60s areawide, and by Monday highs
in near 80 degrees are expected to make a return. This period will
also be dry, creating great conditions for outdoor activities. The
peace ends Tuesday into Wednesday, though, as another cold front
approaches and brings the potential for severe weather back into the
forecast. There is still ample variability among guidance concerning
Tuesday's severe threat stemming from the upper level pattern. A
cutoff low in Baja California is expected to push east along the
US/Mexico border before ejecting energy into the Mid-Mississippi
Valley during the timeframe in question. How strong this low/trough
is and its exact location by that time, however, are still very
uncertain. For this reason, though we're confident in precipitation
falling during this period, PoPs are smeared between Monday night
and Wednesday. As models become more aligned, expect this long
stretch of probabilities to become more focused in time and location.

Jaja

&&

.AVIATION...  (For the 00z TAFs through 00z Saturday Evening)
Issued at 542 PM CST Fri Mar 6 2026

Thunderstorms are expected to impact all terminals at various
times this evening through early Saturday morning. Confidence on
exact timing is relatively low due to variability in how hi-res
guidance shows these clusters/broken segments evolving tonight.
The first to be impacted will be KCOU/KJEF with the cluster
located over central MO just prior to 00z this evening. Most of
this activity skims KJEF, while directly impacting KCOU with
locally heavy rainfall and MVFR cigs/vsbys.

Beyond that, another area to be watched is over northeast OK,
where a separate batch of thunderstorms is organizing. Throughout
the late evening, these thunderstorms track northeast near
KJEF/KCOU with a direct path over the metro terminals after
midnight. The key question at that point is how activity to the
northwest along the cold front interacts with the southern
cluster. Current thinking is for thunderstorms to eventually
congeal into a broader stratiform rain with embedded
thunderstorms. This late-night activity may include embedded
bowing segments with localized gusts up to around 50kts.
Thunderstorm intensity is likely to be waning with eastward
movement and severity may be limited.

The cold front clears the region between mid/late morning
Saturday. Northwesterly flow and dry air gradually breaks sky
cover, improving conditions to VFR Saturday afternoon.

Maples

&&

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

WFO LSX

Hazardous Weather Outlook
National Weather Service St Louis MO
255 PM CST Fri Mar 6 2026

ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-072100-
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-
255 PM CST Fri Mar 6 2026

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

.DAY ONE...Tonight.

Thunderstorms will move through the area tonight. A few may be
severe. Primary hazards are damaging wind and a brief tornado.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

There is a chance of thunderstorms Monday night through Wednesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed.

Jaja