112
WGUS83 KLSX 201537
FLSLSX

Flood Statement
National Weather Service St Louis MO
1037 AM CDT Sun Apr 20 2025

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

  Big River at Byrnesville.

  Kaskaskia River at Carlyle.

...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 24 hours.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

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

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

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

&&

MOC099-220345-
/O.EXT.KLSX.FL.W.0022.000000T0000Z-250422T1920Z/
/BYRM7.1.ER.250420T1104Z.250421T0600Z.250421T1920Z.UU/
1037 AM CDT Sun Apr 20 2025

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

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

* WHERE...Big River at Byrnesville.

* WHEN...Until Tuesday afternoon.

* 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 9:45 AM CDT Sunday the stage was 16.7 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 9:45 AM CDT Sunday was 16.7 feet.
  - Forecast...The river will rise to 18.6 feet just after
    midnight tonight. It will then fall below flood stage early
    tomorrow afternoon to 13.5 feet Tuesday morning. It will rise
    to 14.4 feet Tuesday evening. It will then fall again and
    remain below flood stage.
  - Flood stage is 16.0 feet.



&&


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

Big River
  Byrnesville  16.0    16.7    17.9  13.5  13.5  9.3   7.5



&&

LAT...LON 3834 9060 3833 9068 3846 9063 3849 9057


$$

MOC055-221-220345-
/O.EXT.KLSX.FL.W.0020.000000T0000Z-250424T0700Z/
/SLLM7.1.ER.250419T2324Z.250421T0000Z.250423T0100Z.UU/
1037 AM CDT Sun Apr 20 2025

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

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

* WHERE...Meramec River near Sullivan.

* WHEN...Until late Wednesday night.

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

* ADDITIONAL DETAILS...
  - At 9:29 AM CDT Sunday the stage was 14.7 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 9:29 AM CDT Sunday was 14.7 feet.
  - Forecast...The river is expected to rise to a crest of 15.2
    feet this evening. It will then fall below flood stage
    Tuesday evening.
  - Flood stage is 11.0 feet.



&&


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

Meramec River
  Sullivan     11.0    14.7    14.9  12.8  9.8   8.1   7.3



&&

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


$$

ILC027-220345-
/O.CON.KLSX.FL.W.0002.000000T0000Z-000000T0000Z/
/KCAI2.1.ER.000000T0000Z.250420T0345Z.000000T0000Z.NO/
1037 AM CDT Sun Apr 20 2025

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

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

* WHERE...Kaskaskia River at Carlyle.

* WHEN...Until further notice.

* IMPACTS...At 23.6 feet, Near this height, wastewater treatmeant
  ponds along the left bank are threatened by floodwaters.

* ADDITIONAL DETAILS...
  - At 10:00 AM CDT Sunday the stage was 22.7 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 10:00 AM CDT Sunday was 22.7 feet.
  - Forecast...The river is expected to rise to a crest of 22.7
    feet this afternoon.
  - Flood stage is 16.5 feet.



&&


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

Kaskaskia River
  Carlyle        16.5    22.7    22.7  22.7  22.7  22.7  22.7



&&

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


$$

MRB