River Flood Warning 66, NWS St. Louis, MO

967 
WGUS83 KLSX 310123
FLSLSX

Flood Statement
National Weather Service St Louis MO
823 PM CDT Sat May 30 2026

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

  Moreau River near Jefferson 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.

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

&&

MOC051-011330-
/O.EXT.KLSX.FL.W.0066.000000T0000Z-260602T0000Z/
/JCMM7.1.ER.260530T1607Z.260530T1745Z.260531T1800Z.NO/
823 PM CDT Sat May 30 2026

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

* WHAT...Minor flooding is forecast.

* WHERE...Moreau River near Jefferson City.

* WHEN...Until Monday evening.

* IMPACTS...At 18.0 feet, Near this height, both Bainer Road and
  Loesch Road will be closed.  These roads are about 15.5 to 16 river
  miles upstream of the gage.

* ADDITIONAL DETAILS...
  - At 7:30 PM CDT Saturday the stage was 13.0 feet.
  - Forecast...The river will fall to 11.0 feet just after midnight
    tonight. It will then rise to flood stage early tomorrow
    afternoon. It will fall to 10.6 feet Monday morning. It will then
    rise to 10.9 feet early Monday afternoon. It will fall again and
    remain below flood stage.
  - Flood stage is 17.0 feet.



&&


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

Moreau River
 Jefferson Cit 17.0    13.0    10.6  8.0   5.0   3.8   MSG



&&

LAT...LON 3855 9214 3854 9207 3850 9210 3847 9224
      3850 9235 3856 9236 3857 9233 3854 9226


$$

Elmore

478 
WGUS83 KLSX 311122
FLSLSX

Flood Statement
National Weather Service St Louis MO
622 AM CDT Sun May 31 2026

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

  Moreau River near Jefferson 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.

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

&&

MOC051-012330-
/O.EXT.KLSX.FL.W.0066.000000T0000Z-260602T0231Z/
/JCMM7.1.ER.260530T1607Z.260531T1800Z.260531T2031Z.NO/
622 AM CDT Sun May 31 2026

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

* WHAT...Minor flooding is forecast.

* WHERE...Moreau River near Jefferson City.

* WHEN...Until Monday evening.

* IMPACTS...At 18.0 feet, Near this height, both Bainer Road and
  Loesch Road will be closed.  These roads are about 15.5 to 16 river
  miles upstream of the gage.

* ADDITIONAL DETAILS...
  - At 5:30 AM CDT Sunday the stage was 16.6 feet.
  - Forecast...The river is expected to rise above flood stage this
    morning to a crest of 17.8 feet this afternoon. It will then fall
    below flood stage late this afternoon.
  - Flood stage is 17.0 feet.



&&


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

Moreau River
 Jefferson Cit 17.0    16.6    7.2   5.6   4.0   3.2   2.9



&&

LAT...LON 3855 9214 3854 9207 3850 9210 3847 9224
      3850 9235 3856 9236 3857 9233 3854 9226


$$

Carney

898 
WGUS83 KLSX 311439
FLSLSX

Flood Statement
National Weather Service St Louis MO
939 AM CDT Sun May 31 2026

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

  Moreau River near Jefferson 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.

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

&&

MOC051-020245-
/O.EXT.KLSX.FL.W.0066.000000T0000Z-260602T0448Z/
/JCMM7.1.ER.260530T1607Z.260531T1800Z.260531T2248Z.NO/
939 AM CDT Sun May 31 2026

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

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

* WHERE...Moreau River near Jefferson City.

* WHEN...Until Monday evening.

* IMPACTS...At 19.0 feet, Near this height, Zion Road will be closed.
  This road is about 12 river miles upstream of the gage.

* ADDITIONAL DETAILS...
  - At 8:30 AM CDT Sunday the stage was 17.6 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 8:30 AM CDT Sunday was 17.6 feet.
  - Forecast...The river is expected to rise to a crest of 18.6 feet
    this afternoon. It will then fall below flood stage late this
    afternoon.
  - Flood stage is 17.0 feet.



&&


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

Moreau River
 Jefferson Cit 17.0    17.6    8.0   12.6  6.6   4.3   3.5



&&

LAT...LON 3855 9214 3854 9207 3850 9210 3847 9224
      3850 9235 3856 9236 3857 9233 3854 9226


$$

Delia

885 
WGUS83 KLSX 011522
FLSLSX

Flood Statement
National Weather Service St Louis MO
1022 AM CDT Mon Jun 1 2026

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

  Moreau River near Jefferson City.

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

MOC051-011630-
/O.CAN.KLSX.FL.W.0066.000000T0000Z-260601T1522Z/
/JCMM7.1.ER.260530T1607Z.000000T0000Z.000000T0000Z.NO/
1022 AM CDT Mon Jun 1 2026

...FLOOD WARNING IS CANCELLED...

The Flood Warning is cancelled for
  the Moreau River near Jefferson City.

* ADDITIONAL DETAILS...
  - At 9:30 AM CDT Monday the stage was 9.0 feet.
  - Forecast...The river is expected to rise to a crest of 8.2 feet
    early tomorrow afternoon.



&&


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

Moreau River
 Jefferson Cit 17.0    9.0     8.1   6.1   4.3   3.4   MSG



&&

LAT...LON 3855 9214 3854 9207 3850 9210 3847 9224
      3850 9235 3856 9236 3857 9233 3854 9226


$$

Walsh

Area Forecast Discussion...Updated Aviation
National Weather Service Saint Louis MO
637 AM CDT Sat May 30 2026

.KEY MESSAGES...

- There will be several rounds of showers and scattered thunderstorms
  through Monday before drier weather is expected next week.

- High temperatures are expected to mainly be in the 80s.

&&

.SHORT TERM...  (Through Late Sunday Afternoon)
Issued at 323 AM CDT Sat May 30 2026

Surface winds were calm or very light over the area early this
morning to the north of a stationary front extending from the Mid
South into the Central Plains.  Low clouds and patchy fog with
visibilities below 1 mile have developed across parts of central and
southern Missouri.  HREF probabilities is showing that this same
area having >50% chance <1/4 mile visibilities between 4-8 am, so
will need to watch visibilities trends the next few hours for the
need of an advisory.

Water vapor imagery is showing a weakening upper trough along the
Mississippi River with a trough over the central Plains.  While the
first trough will continue to weaken and move off to the east this
morning, the band of low level convergence that has been across
southeast and central Missouri since yesterday will remain quasi-
stationary through tonight. RAP soundings are showing MLCAPES around
1500 J/kg with weak deep layer shear so I couldn't rule out a few
storms producing small hail and gusty winds today. PWATS are around
1.9" with warm cloud depths above 10,000 feet, so locally heavy
rainfall will also be possible.

This activity will likely die down this evening but then pick up
again overnight as thunderstorms that develop over eastern Kansas
and western Missouri later today will move into central and
northeast Missouri after midnight.  Chances over this area will
initially be in the 40-60% range through early Sunday morning but
will fall off by late morning and Sunday afternoon as it moves east
of persistent area of convergence and instability.

Britt

&&

.LONG TERM...  (Sunday Night through Friday)
Issued at 323 AM CDT Sat May 30 2026

Model guidance has been consistent and is showing the upper flow
turning northwesterly and eventually northerly early next week as
the trough deepens over the East Coast.   The LREF is still showing
40-70% of is members producing rain over the CWA late on Sunday
night, likely as a shortwave trough or MCS moves southeast through
the area. The NAM/GFS is showing MLCAPES of around 1000 J/kg with
deep layer shear around 35 knots supporting a few strong storms
overnight along with the possibility for locally heavy rainfall. The
LREF has 30-50% of it members still producing rain into Monday
morning before mainly dry weather is expected on the backside of the
trough through Thursday.  High temperatures will be mainly in the
80s

Britt

&&

.AVIATION...  (For the 12z TAFs through 12z Sunday Morning)
Issued at 623 AM CDT Sat May 30 2026

An area of IFR cigs/vsbys extending from central Missouri into
southeast Missouri is expected to lift to MVFR by 14-15Z and to
VFR by 17-18Z. Additionally, widely scattered showers over south
central Illinois are producing MVFR cigs/vsbys. These showers are
expected to dissipate over the next 2-3 hours and ceilings should
lift to VFR for the rest of the day.  Elsewhere, VFR flight
conditions are expected to prevail today. Scattered afternoon
showers and thunderstorms could briefly reduce flight conditions
in moderate to heavy rain. Any convection that develops this
afternoon should dissipate after sunset. Areas that receive rain
this afternoon will be susceptible to fog development again
tonight. While this could happen anywhere across the area, central
and southeast Missouri seems the most likely spots for fog late
tonight. Some models also show a dying cluster of thunderstorms
entering parts of central and northeast Missouri late in the
period Sunday morning. There seems to be little agreement in
timing and location of these storms early Sunday morning so have
left them out of the central Missouri TAFs on this update.

Carney

&&

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

WFO LSX