Alert archive / Missouri / River Flood Warnings in 2026

River Flood Warning 70, NWS St. Louis, MO

June 7, 2026Gasconade County, Montgomery County, Missouri

NWS St. Louis, MO issued this river flood warning at Jun 7, 2026, 8:43 PM CDT for Gasconade County, Montgomery County, Missouri. It took effect at Jun 8, 2026, 11:27 AM CDT. It was in force for 58 hr.

The area

The outline as issued.

The facts

Issued
Jun 7, 2026, 8:43 PM CDT (01:43 UTC)
In effect from
Jun 8, 2026, 11:27 AM CDT
Expired
Jun 10, 2026, 9:31 PM CDT
In force
58 hr
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Flood severity
Minor

Counties Gasconade County, MO, Montgomery County, MO

The radar

The St Louis radar (KLSX), 65 km from the middle of the area, began a volume at 01:41 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 Missouri River at Hermann (HRNM7).

Action stage
19 ft
Minor stage
21 ft
Moderate stage
26 ft
Major stage
33 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06934500, 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.

644 
WGUS43 KLSX 080143
FLWLSX

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service St Louis MO
843 PM CDT Sun Jun 7 2026

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

  Missouri River near Chamois.

  Missouri River at Hermann.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

MOC027-151-091345-
/O.NEW.KLSX.FL.W.0069.260608T1410Z-260612T0900Z/
/CMSM7.1.ER.260608T1410Z.260609T1800Z.260610T2034Z.NO/
843 PM CDT Sun Jun 7 2026

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

* WHAT...Minor flooding is forecast.

* WHERE...Missouri River near Chamois.

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

* ADDITIONAL DETAILS...
  - At 8:30 PM latest stage was estimated to be near 13.3 feet.
  - Forecast...The river is expected to rise above flood stage late
    tomorrow morning to a crest of 20.3 feet early Tuesday afternoon.
    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   Tue   Wed   Thu   Fri

Missouri River
 Chamois      17.0    13.3E     20.2  18.3  15.5  12.9

E- Estimated



&&

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


$$

MOC073-139-091345-
/O.NEW.KLSX.FL.W.0070.260608T2125Z-260612T0300Z/
/HRNM7.1.ER.260608T2125Z.260609T1800Z.260610T2040Z.NO/
843 PM CDT Sun Jun 7 2026

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

* WHAT...Minor flooding is forecast.

* WHERE...Missouri River at Hermann.

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

* IMPACTS...At 25.0 feet, City Lions Club Athletic Field begins to
  flood.

* ADDITIONAL DETAILS...
  - At 7:30 PM CDT Sunday the stage was 14.7 feet.
  - Forecast...The river is expected to rise above flood stage
    tomorrow afternoon to a crest of 23.7 feet early Tuesday
    afternoon. It will then fall below flood stage Wednesday
    afternoon.
  - Flood stage is 21.0 feet.



&&


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

Missouri River
 Hermann      21.0    14.7    23.4  22.3  19.3  16.9  14.4



&&

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


$$

Maples
7 follow-up statements
193 
WGUS83 KLSX 081011
FLSLSX

Flood Statement
National Weather Service St Louis MO
511 AM CDT Mon Jun 8 2026

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

  Missouri River near Chamois.

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

  Moreau River near Jefferson City.

  Missouri River at Hermann.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

MOC027-151-092215-
/O.EXT.KLSX.FL.W.0069.260608T1011Z-260612T1030Z/
/CMSM7.1.ER.000000T0000Z.260609T1200Z.260610T2230Z.NO/
511 AM CDT Mon Jun 8 2026

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

* WHAT...Minor flooding is forecast.

* WHERE...Missouri River near Chamois.

* WHEN...From early this morning to late Thursday night.

* IMPACTS...At 24.2 feet, The upstream campsite at the Chamois river
  access campgrounds begins flooding near this height.

* ADDITIONAL DETAILS...
  - There is no current observed data.
  - Forecast...The river is expected to rise to a crest of 22.8 feet
    tomorrow 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   Tue   Wed   Thu   Fri   Sat

Missouri River
 Chamois      17.0    MSG     22.8  18.7  15.3  12.3  MSG



&&

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


$$

MOC051-092215-
/O.EXT.KLSX.FL.W.0072.260608T1026Z-260611T0741Z/
/JCMM7.2.ER.260608T1026Z.260609T0600Z.260610T0141Z.NO/
511 AM CDT Mon Jun 8 2026

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

* WHAT...Moderate flooding is forecast.

* WHERE...Moreau River near Jefferson City.

* WHEN...Until late Wednesday night.

* IMPACTS...At 29.3 feet, Water level reaches the low steel of the
  Tanner Bridge.

* ADDITIONAL DETAILS...
  - At 4:30 AM CDT Monday the stage was 15.8 feet.
  - Forecast...The river is expected to rise above flood stage early
    this morning to a crest of 28.2 feet just after midnight tonight.
    It will then fall below flood stage tomorrow evening.
  - Flood stage is 17.0 feet.



&&


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

Moreau River
 Jefferson Cit 17.0    15.8    28.2  7.3   3.9   3.3   MSG



&&

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


$$

MOC073-139-092215-
/O.EXT.KLSX.FL.W.0070.260608T2125Z-260612T0240Z/
/HRNM7.1.ER.260608T2125Z.260609T1800Z.260610T2040Z.NO/
511 AM CDT Mon Jun 8 2026

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

* WHAT...Minor flooding is forecast.

* WHERE...Missouri River at Hermann.

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

* IMPACTS...At 25.0 feet, City Lions Club Athletic Field begins to
  flood.

* ADDITIONAL DETAILS...
  - At 4:30 AM CDT Monday the stage was 18.5 feet.
  - Forecast...The river is expected to rise above flood stage late
    this afternoon to a crest of 23.7 feet early tomorrow afternoon.
    It will then fall below flood stage Wednesday afternoon.
  - Flood stage is 21.0 feet.



&&


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

Missouri River
 Hermann      21.0    18.5    23.4  22.3  19.3  16.9  14.4



&&

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


$$

MRB
375 
WGUS83 KLSX 081627
FLSLSX

Flood Statement
National Weather Service St Louis MO
1127 AM CDT Mon Jun 8 2026

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

  Missouri River at Jefferson City.

  Missouri River near Chamois.

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

  Missouri River at Hermann.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

MOC019-027-051-135-100430-
/O.EXT.KLSX.FL.W.0073.000000T0000Z-260610T1545Z/
/JFFM7.1.ER.260608T1037Z.260608T1545Z.260609T0945Z.NO/
1127 AM CDT Mon Jun 8 2026

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

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

* WHERE...Missouri River at Jefferson City.

* WHEN...Until Wednesday morning.

* IMPACTS...At 24.5 feet, The Katy Trail Floods near Rocheport.

* ADDITIONAL DETAILS...
  - At 10:45 AM CDT Monday the stage was 24.3 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 10:45 AM CDT Monday was 24.3 feet.
  - Forecast...The river is expected to fall below flood stage late
    tonight and continue falling to 14.4 feet Saturday morning.
  - Flood stage is 23.0 feet.



&&


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

Missouri River
 Jefferson Cit 23.0    24.3    22.7  20.1  17.6  15.5  14.4



&&

LAT...LON 3864 9198 3855 9192 3853 9217 3867 9239
      3880 9245 3882 9236 3867 9219


$$

MOC073-139-100430-
/O.EXT.KLSX.FL.W.0070.260608T1627Z-260612T0440Z/
/HRNM7.1.ER.260608T1423Z.260609T1200Z.260610T2240Z.NO/
1127 AM CDT Mon Jun 8 2026

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

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

* WHERE...Missouri River at Hermann.

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

* IMPACTS...At 25.9 feet, State Route B in northwest Franklin County
  west of New Haven is closed near this height between Berger and
  Etlah.

* ADDITIONAL DETAILS...
  - At 10:30 AM CDT Monday the stage was 21.6 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 10:30 AM CDT Monday was 21.6 feet.
  - Forecast...The river is expected to rise to a crest of 25.7 feet
    tomorrow morning. It will then fall below flood stage Wednesday
    afternoon.
  - Flood stage is 21.0 feet.



&&


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

Missouri River
 Hermann      21.0    21.6    25.7  22.9  19.1  16.3  14.3



&&

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


$$

MOC027-151-100430-
/O.EXT.KLSX.FL.W.0069.000000T0000Z-260612T0945Z/
/CMSM7.1.ER.000000T0000Z.260609T0600Z.260610T2145Z.NO/
1127 AM CDT Mon Jun 8 2026

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

* WHAT...Minor flooding is forecast.

* WHERE...Missouri River near Chamois.

* WHEN...Until late Thursday night.

* IMPACTS...At 24.2 feet, The upstream campsite at the Chamois river
  access campgrounds begins flooding near this height.

* ADDITIONAL DETAILS...
  - At 11AM the river was estimated to be near 19.4 feet.
  - Forecast...The river is expected to rise to a crest of 22.5 feet
    just after midnight tonight. 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   Tue   Wed   Thu   Fri   Sat

Missouri River
 Chamois      17.0    19.4E     22.5  18.6  15.2  12.4  10.6

E= Estimated

&&

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


$$

Maples
745 
WGUS83 KLSX 090256
FLSLSX

Flood Statement
National Weather Service St Louis MO
956 PM CDT Mon Jun 8 2026

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

  Missouri River at Washington.

  Missouri River at Jefferson City.

  Moreau River near Jefferson City.

  Osage River near Mari-Osa Campground.

  Missouri River at Hermann.

  Missouri River near Chamois.

  Missouri River at St. Charles.

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.

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

&&

MOC071-219-101500-
/O.EXT.KLSX.FL.W.0075.000000T0000Z-260612T0240Z/
/WHGM7.1.ER.260609T0015Z.260609T1800Z.260610T1440Z.NO/
956 PM CDT Mon Jun 8 2026

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

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

* WHERE...Missouri River at Washington.

* WHEN...Until Thursday evening.

* IMPACTS...At 23.5 feet, Riverfront Trail 2.25 miles east of the
  last bench in the woods floods.

* ADDITIONAL DETAILS...
  - At 8:45 PM CDT Monday the stage was 20.5 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 8:45 PM CDT Monday was 20.5 feet.
  - Forecast...The river is expected to rise to a crest of 22.3 feet
    early tomorrow afternoon. It will then fall below flood stage
    late Wednesday morning.
  - Flood stage is 20.0 feet.



&&


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

Missouri River
 Washington   20.0    20.5    20.4  17.6  16.1  14.6  MSG



&&

LAT...LON 3867 9076 3860 9069 3849 9092 3859 9119
      3866 9119 3866 9100 3858 9092 3860 9082
      3865 9083


$$

MOC051-151-101500-
/O.EXT.KLSX.FL.W.0074.000000T0000Z-260611T1800Z/
/MOAM7.1.ER.000000T0000Z.260609T0600Z.260610T1200Z.UU/
956 PM CDT Mon Jun 8 2026

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

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

* WHERE...Osage River near Mari-Osa Campground.

* WHEN...Until Thursday afternoon.

* IMPACTS...At 22.0 feet, A storage shed across the river from the
  gage begins flooding near this height.

* ADDITIONAL DETAILS...
  - At 12:00 PM CDT Monday the stage was 21.0 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 12:00 PM CDT Monday was 21.0 feet.
  - Forecast...The river is expected to rise to a crest of 21.8 feet
    just after midnight tonight. It will then fall below flood stage
    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

Osage River
 Mari-Osa Campgroun 19.0    21.0    19.0  17.0  15.9  14.4  MSG



&&

LAT...LON 3848 9197 3845 9206 3848 9208 3850 9204
      3855 9205 3855 9200


$$

MOC019-027-051-135-101245-
/O.EXT.KLSX.FL.W.0073.000000T0000Z-260610T1240Z/
/JFFM7.1.ER.260608T1037Z.260608T2215Z.260609T0640Z.NO/
956 PM CDT Mon Jun 8 2026

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

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

* WHERE...Missouri River at Jefferson City.

* WHEN...Until Wednesday morning.

* IMPACTS...At 24.5 feet, The Katy Trail Floods near Rocheport.

* ADDITIONAL DETAILS...
  - At 9:45 PM CDT Monday the stage was 24.3 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 9:45 PM CDT Monday was 24.6 feet.
  - Forecast...The river is expected to fall below flood stage just
    after midnight tonight and continue falling to 15.0 feet Saturday
    evening.
  - Flood stage is 23.0 feet.



&&


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

Missouri River
 Jefferson Cit 23.0    24.3    19.4  17.6  16.6  15.3  MSG



&&

LAT...LON 3864 9198 3855 9192 3853 9217 3867 9239
      3880 9245 3882 9236 3867 9219


$$

MOC051-101500-
/O.EXT.KLSX.FL.W.0072.000000T0000Z-260611T0837Z/
/JCMM7.2.ER.260608T1041Z.260609T0600Z.260610T0237Z.NO/
956 PM CDT Mon Jun 8 2026

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

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

* WHERE...Moreau River near Jefferson City.

* WHEN...Until late Wednesday night.

* IMPACTS...At 29.3 feet, Water level reaches the low steel of the
  Tanner Bridge.

* ADDITIONAL DETAILS...
  - At 9:30 PM CDT Monday the stage was 27.4 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 9:30 PM CDT Monday was 27.4 feet.
  - Forecast...The river is expected to rise to a crest of 27.5 feet
    just after midnight tonight. It will then fall below flood stage
    late tomorrow evening.
  - Flood stage is 17.0 feet.



&&


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

Moreau River
 Jefferson Cit 17.0    27.4    6.4   3.6   2.8   2.6   MSG



&&

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


$$

MOC073-139-101500-
/O.EXT.KLSX.FL.W.0070.000000T0000Z-260612T0651Z/
/HRNM7.1.ER.260608T1423Z.260609T1200Z.260611T0051Z.NO/
956 PM CDT Mon Jun 8 2026

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

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

* WHERE...Missouri River at Hermann.

* WHEN...Until late Thursday night.

* IMPACTS...At 25.9 feet, State Route B in northwest Franklin County
  west of New Haven is closed near this height between Berger and
  Etlah.

* ADDITIONAL DETAILS...
  - At 9:30 PM CDT Monday the stage was 25.0 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 9:30 PM CDT Monday was 25.0 feet.
  - Forecast...The river is expected to rise to a crest of 25.8 feet
    tomorrow morning. It will then fall below flood stage Wednesday
    evening.
  - Flood stage is 21.0 feet.



&&


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

Missouri River
 Hermann      21.0    25.0    22.9  19.9  18.5  16.9  15.5



&&

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


$$

MOC027-151-101500-
/O.EXT.KLSX.FL.W.0069.000000T0000Z-260612T1400Z/
/CMSM7.1.ER.000000T0000Z.260609T0600Z.260611T0200Z.NO/
956 PM CDT Mon Jun 8 2026

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

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

* WHERE...Missouri River near Chamois.

* WHEN...Until Friday morning.

* IMPACTS...At 24.2 feet, The upstream campsite at the Chamois river
  access campgrounds begins flooding near this height.

* ADDITIONAL DETAILS...
  - At 6:30 AM CDT Monday the stage was 18.1 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 6:30 AM CDT Monday was 18.1 feet.
  - Forecast...The river is expected to rise to a crest of 23.0 feet
    just after midnight tonight. It will then fall below flood stage
    late Wednesday evening.
  - Flood stage is 17.0 feet.



&&


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

Missouri River
 Chamois      17.0    18.1    18.7  16.2  14.8  13.1  MSG



&&

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


$$

MOC183-189-101500-
/O.EXT.KLSX.FL.W.0076.260609T0810Z-260612T0508Z/
/SCLM7.1.ER.260609T0810Z.260610T0000Z.260610T2308Z.NO/
956 PM CDT Mon Jun 8 2026

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

* WHAT...Minor flooding is forecast.

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

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

* IMPACTS...At 27.0 feet, The Katy Trail begins flooding near this
  height along Hawning Road, about 2 miles north northeast of the
  Highway 370 bridge.

* ADDITIONAL DETAILS...
  - At 9:30 PM CDT Monday the stage was 23.8 feet.
  - Forecast...The river is expected to rise above flood stage late
    tonight to a crest of 26.7 feet tomorrow evening. It will then
    fall below flood stage Wednesday evening.
  - Flood stage is 25.0 feet.



&&


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

Missouri River
 St. Charles  25.0    23.8    26.2  23.8  22.3  21.3  MSG



&&

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


$$

Delia
161 
WGUS83 KLSX 091543
FLSLSX

Flood Statement
National Weather Service St Louis MO
1043 AM CDT Tue Jun 9 2026

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

  Missouri River at St. Charles.

  Missouri River at Washington.

  Missouri River at Hermann.

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

  Missouri River at Jefferson City.

  Missouri River near Chamois.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

MOC183-189-110345-
/O.EXT.KLSX.FL.W.0076.000000T0000Z-260612T0417Z/
/SCLM7.1.ER.260609T0602Z.260610T0000Z.260610T2217Z.NO/
1043 AM CDT Tue Jun 9 2026

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

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

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

* WHEN...Until Thursday evening.

* IMPACTS...At 27.0 feet, The Katy Trail begins flooding near this
  height along Hawning Road, about 2 miles north northeast of the
  Highway 370 bridge.

* ADDITIONAL DETAILS...
  - At 10:00 AM CDT Tuesday the stage was 26.8 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 10:00 AM CDT Tuesday was 26.8 feet.
  - Forecast...The river is expected to rise to a crest of 27.1 feet
    this evening. It will then fall below flood stage tomorrow
    afternoon.
  - Flood stage is 25.0 feet.



&&


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

Missouri River
 St. Charles  25.0    26.8    26.3  23.5  22.0  21.1  20.2



&&

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


$$

MOC071-219-110345-
/O.EXT.KLSX.FL.W.0075.000000T0000Z-260611T2324Z/
/WHGM7.1.ER.260609T0015Z.260609T1800Z.260610T1124Z.NO/
1043 AM CDT Tue Jun 9 2026

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

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

* WHERE...Missouri River at Washington.

* WHEN...Until Thursday evening.

* IMPACTS...At 21.0 feet, Wastewater plant turns pumps on.

* ADDITIONAL DETAILS...
  - At 9:45 AM CDT Tuesday the stage was 21.9 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 9:45 AM CDT Tuesday was 21.9 feet.
  - Forecast...The river is expected to rise to a crest of 22.0 feet
    this afternoon. It will then fall below flood stage tomorrow
    morning.
  - Flood stage is 20.0 feet.



&&


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

Missouri River
 Washington   20.0    21.9    19.9  17.3  15.5  14.6  13.3



&&

LAT...LON 3867 9076 3860 9069 3849 9092 3859 9119
      3866 9119 3866 9100 3858 9092 3860 9082
      3865 9083


$$

MOC019-027-051-135-110115-
/O.EXT.KLSX.FL.W.0073.000000T0000Z-260611T0105Z/
/JFFM7.1.ER.260608T1037Z.260608T2215Z.260609T1905Z.NO/
1043 AM CDT Tue Jun 9 2026

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

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

* WHERE...Missouri River at Jefferson City.

* WHEN...Until Wednesday evening.

* ADDITIONAL DETAILS...
  - At 9:45 AM CDT Tuesday the stage was 23.7 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 9:45 AM CDT Tuesday was 24.6 feet.
  - Forecast...The river is expected to fall below flood stage this
    afternoon and continue falling to 14.9 feet Sunday morning.
  - Flood stage is 23.0 feet.



&&


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

Missouri River
 Jefferson Cit 23.0    23.7    20.0  17.3  16.8  16.0  14.9



&&

LAT...LON 3864 9198 3855 9192 3853 9217 3867 9239
      3880 9245 3882 9236 3867 9219


$$

MOC073-139-110345-
/O.EXT.KLSX.FL.W.0070.000000T0000Z-260612T0234Z/
/HRNM7.1.ER.260608T1423Z.260609T0845Z.260610T2034Z.NO/
1043 AM CDT Tue Jun 9 2026

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

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

* WHERE...Missouri River at Hermann.

* WHEN...Until Thursday evening.

* IMPACTS...At 25.2 feet, The Bait shop just below the bridge floods.

* ADDITIONAL DETAILS...
  - At 8:30 AM CDT Tuesday the stage was 25.3 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 8:30 AM CDT Tuesday was 25.4 feet.
  - Forecast...The river is expected to fall below flood stage
    tomorrow afternoon and continue falling to 12.9 feet Tuesday,
    June 16.
  - Flood stage is 21.0 feet.



&&


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

Missouri River
 Hermann      21.0    25.3    22.3  19.5  18.0  17.0  15.7



&&

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


$$

MOC027-151-110345-
/O.EXT.KLSX.FL.W.0069.000000T0000Z-260612T1525Z/
/CMSM7.1.ER.000000T0000Z.260609T1800Z.260611T0325Z.NO/
1043 AM CDT Tue Jun 9 2026

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

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

* WHERE...Missouri River near Chamois.

* WHEN...Until Friday morning.

* IMPACTS...At 24.2 feet, The upstream campsite at the Chamois river
  access campgrounds begins flooding near this height.

* ADDITIONAL DETAILS...
  - At 6:30 AM CDT Monday, June 08 the stage was 18.1 feet.
  - Recent Activity...The river stage was estimated to be 22.6 feet
    at 10 am on Tuesday, June 9. This estimate is derived from a
    model data, as the most recent direct observation from Monday
    morning is no longer valid.
  - Forecast...The river is expected to rise to a crest of 22.5 feet
    this afternoon. It will then fall below flood stage late tomorrow
    evening.
  - Flood stage is 17.0 feet.



&&


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

Missouri River
 Chamois      17.0    18.1    19.1  16.1  14.8  13.6  12.3



&&

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


$$

BRC
168 
WGUS83 KLSX 100147
FLSLSX

Flood Statement
National Weather Service St Louis MO
847 PM CDT Tue Jun 9 2026

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

  Missouri River at St. Charles.

  Missouri River at Washington.

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

  Osage River near Mari-Osa Campground.

  Missouri River at Hermann.

  Missouri River near Chamois.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

MOC183-189-111400-
/O.EXT.KLSX.FL.W.0076.000000T0000Z-260612T0600Z/
/SCLM7.1.ER.260609T0602Z.260610T0030Z.260611T0000Z.NO/
847 PM CDT Tue Jun 9 2026

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

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

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

* WHEN...Until late Thursday night.

* ADDITIONAL DETAILS...
  - At 8:30 PM CDT Tuesday the stage was 27.2 feet.
  - Forecast...The river is expected to fall below flood stage
    Wednesday evening.
  - Flood stage is 25.0 feet.



&&


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

Missouri River
 St. Charles  25.0    27.2    26.5  23.5  21.3  21.0  20.1



&&

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


$$

MOC071-219-111400-
/O.EXT.KLSX.FL.W.0075.000000T0000Z-260612T0105Z/
/WHGM7.1.ER.260609T0015Z.260609T1530Z.260610T1305Z.NO/
847 PM CDT Tue Jun 9 2026

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

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

* WHERE...Missouri River at Washington.

* WHEN...Until Thursday evening.

* ADDITIONAL DETAILS...
  - At 7:45 PM CDT Tuesday the stage was 21.6 feet.
  - Forecast...The river is expected to fall below flood stage
    Wednesday morning.
  - Flood stage is 20.0 feet.



&&


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

Missouri River
 Washington   20.0    21.6    20.2  16.8  14.7  14.7  13.1



&&

LAT...LON 3867 9076 3860 9069 3849 9092 3859 9119
      3866 9119 3866 9100 3858 9092 3860 9082
      3865 9083


$$

MOC051-151-111400-
/O.EXT.KLSX.FL.W.0074.000000T0000Z-260611T1630Z/
/MOAM7.1.ER.000000T0000Z.260609T1600Z.260610T1030Z.UU/
847 PM CDT Tue Jun 9 2026

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

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

* WHERE...Osage River near Mari-Osa Campground.

* WHEN...Until Thursday morning.

* ADDITIONAL DETAILS...
  - At 11:00 AM CDT Tuesday the stage was 21.1 feet.
  - Forecast...The river is expected to fall below flood stage late
    tonight.
  - Flood stage is 19.0 feet.



&&


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

Osage River
 Mari-Osa Campgroun 19.0    21.1    18.8  15.3  15.5  15.0  13.7



&&

LAT...LON 3848 9197 3845 9206 3848 9208 3850 9204
      3855 9205 3855 9200


$$

MOC073-139-111400-
/O.EXT.KLSX.FL.W.0070.000000T0000Z-260612T0148Z/
/HRNM7.1.ER.260608T1423Z.260609T0845Z.260610T1948Z.NO/
847 PM CDT Tue Jun 9 2026

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

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

* WHERE...Missouri River at Hermann.

* WHEN...Until Thursday evening.

* ADDITIONAL DETAILS...
  - At 7:30 PM CDT Tuesday the stage was 24.5 feet.
  - Forecast...The river is expected to fall below flood stage
    Wednesday afternoon.
  - Flood stage is 21.0 feet.



&&


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

Missouri River
 Hermann      21.0    24.5    22.6  18.7  17.6  17.1  15.5



&&

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


$$

MOC027-151-111400-
/O.EXT.KLSX.FL.W.0069.000000T0000Z-260612T1200Z/
/CMSM7.1.ER.000000T0000Z.260610T0600Z.260611T0000Z.NO/
847 PM CDT Tue Jun 9 2026

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

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

* WHERE...Missouri River near Chamois.

* WHEN...Until Friday morning.

* ADDITIONAL DETAILS...
  - At 6:30 AM CDT Monday, June 08 the stage was 18.1 feet.
  - Forecast...The river is forecast to fall back below flood stage
    Wednesday afternoon.
  - Flood stage is 17.0 feet.



&&


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

Missouri River
 Chamois      17.0    18.1    19.5  15.0  14.7  13.6  12.1



&&

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


$$

Gosselin
820 
WGUS83 KLSX 101608
FLSLSX

Flood Statement
National Weather Service St Louis MO
1108 AM CDT Wed Jun 10 2026

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

  Missouri River at St. Charles.

  Missouri River at Hermann.

  Missouri River near Chamois.

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

  Osage River near Mari-Osa Campground.

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

  Missouri River at Washington.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

MOC071-219-101715-
/O.CAN.KLSX.FL.W.0075.000000T0000Z-260610T1608Z/
/WHGM7.1.ER.260609T0015Z.260609T1530Z.260610T1533Z.NO/
1108 AM CDT Wed Jun 10 2026

...FLOOD WARNING IS CANCELLED...

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

* ADDITIONAL DETAILS...
  - At 10:45 AM CDT Wednesday the stage was 20.0 feet.
  - Forecast...The river is expected to fall to 12.9 feet Monday
    morning.



&&


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

Missouri River
 Washington   20.0    20.0    17.3  15.2  15.1  13.8  12.9



&&

LAT...LON 3867 9076 3860 9069 3849 9092 3859 9119
      3866 9119 3866 9100 3858 9092 3860 9082
      3865 9083


$$

MOC183-189-120415-
/O.EXT.KLSX.FL.W.0076.000000T0000Z-260612T0900Z/
/SCLM7.1.ER.260609T0602Z.260610T0030Z.260611T0300Z.NO/
1108 AM CDT Wed Jun 10 2026

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

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

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

* WHEN...Until late Thursday night.

* IMPACTS...At 27.0 feet, The Katy Trail begins flooding near this
  height along Hawning Road, about 2 miles north northeast of the
  Highway 370 bridge.

* ADDITIONAL DETAILS...
  - At 11:00 AM CDT Wednesday the stage was 26.3 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 11:00 AM CDT Wednesday was 27.2 feet.
  - Forecast...The river is expected to fall below flood stage late
    this evening and continue falling to 19.7 feet Monday morning.
  - Flood stage is 25.0 feet.



&&


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

Missouri River
 St. Charles  25.0    26.3    24.0  21.8  21.3  20.6  19.7



&&

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


$$

MOC051-151-111545-
/O.EXT.KLSX.FL.W.0074.000000T0000Z-260611T1536Z/
/MOAM7.1.ER.000000T0000Z.260609T1600Z.260610T0936Z.UU/
1108 AM CDT Wed Jun 10 2026

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

* WHAT...Minor flooding is occurring.

* WHERE...Osage River near Mari-Osa Campground.

* WHEN...Until Thursday morning.

* IMPACTS...At 22.0 feet, A storage shed across the river from the
  gage begins flooding near this height.

* ADDITIONAL DETAILS...
  - At 11:00 AM CDT Tuesday, June 09 the stage was 21.1 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 11:00 AM CDT Tuesday was -9999.0 feet.
  - Forecast...The river is expected to fall to 9.1 feet Saturday,
    June 20.
  - Flood stage is 19.0 feet.



&&


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

Osage River
 Mari-Osa Campgroun 19.0    21.1    15.6  15.3  15.0  13.7  12.7



&&

LAT...LON 3848 9197 3845 9206 3848 9208 3850 9204
      3855 9205 3855 9200


$$

MOC073-139-120415-
/O.EXT.KLSX.FL.W.0070.000000T0000Z-260612T0520Z/
/HRNM7.1.ER.260608T1423Z.260609T0845Z.260610T2320Z.NO/
1108 AM CDT Wed Jun 10 2026

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

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

* WHERE...Missouri River at Hermann.

* WHEN...Until late Thursday night.

* IMPACTS...At 22.3 feet, Southern portions of Old Rock Road and
  Twisters Road south of Rhineland begin flooding near this height.

* ADDITIONAL DETAILS...
  - At 10:30 AM CDT Wednesday the stage was 22.3 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 10:30 AM CDT Wednesday was 25.3 feet.
  - Forecast...The river is expected to fall below flood stage this
    evening and continue falling to 12.7 feet Wednesday, June 17.
  - Flood stage is 21.0 feet.



&&


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

Missouri River
 Hermann      21.0    22.3    19.4  17.9  17.6  16.2  15.2



&&

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


$$

MOC027-151-120415-
/O.EXT.KLSX.FL.W.0069.000000T0000Z-260612T1525Z/
/CMSM7.1.ER.000000T0000Z.260610T1800Z.260611T0325Z.NO/
1108 AM CDT Wed Jun 10 2026

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

* WHAT...Minor flooding is forecast.

* WHERE...Missouri River near Chamois.

* WHEN...Until Friday morning.

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

* ADDITIONAL DETAILS...
  - There is no current observed data.
  - Forecast...The river is expected to fall below flood stage late
    this evening and continue falling to 11.9 feet Monday morning.
  - Flood stage is 17.0 feet.



&&


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

Missouri River
 Chamois      17.0    MSG     16.0  14.9  14.2  12.9  11.9



&&

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


$$

MRB
977 
WGUS83 KLSX 110231
FLSLSX

Flood Statement
National Weather Service St Louis MO
931 PM CDT Wed Jun 10 2026

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

  Missouri River at Hermann.

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

MOC073-139-110345-
/O.CAN.KLSX.FL.W.0070.000000T0000Z-260611T0231Z/
/HRNM7.1.ER.260608T1423Z.260609T0845Z.260610T2346Z.NO/
931 PM CDT Wed Jun 10 2026

...FLOOD WARNING IS CANCELLED...

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

* ADDITIONAL DETAILS...
  - At 8:30 PM CDT Wednesday the stage was 20.7 feet.
  - Forecast...The river is expected to fall to 15.3 feet Wednesday,
    June 17.



&&


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

Missouri River
 Hermann      21.0    20.7    19.1  20.1  19.4  18.7  18.2



&&

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


$$

Britt

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 7, 6:03 PM CDT, 2 hours 40 minutes earlier. Its key messages:

  • Waves of showers and thunderstorms are expected through at least Monday afternoon/evening with lower chances extending into Tuesday morning.
  • Locally heavy rainfall is possible through Tuesday morning, but confidence relatively higher in flash flooding across central MO tonight into Monday morning. An isolated severe thunderstorm with damaging winds and/or brief, weak tornado is also possible this evening and again Monday afternoon and evening.
  • Heat and humidity will build Tuesday into Thursday with high temperatures reaching the 90s F and afternoon heat index values exceeding 100 F in some locations.
Area forecast discussion, Jun 7, 6:03 PM CDT, 2 hours 40 minutes before
Area Forecast Discussion...Updated Aviation
National Weather Service Saint Louis MO
603 PM CDT Sun Jun 7 2026

.KEY MESSAGES...

- Waves of showers and thunderstorms are expected through at
  least Monday afternoon/evening with lower chances extending into
  Tuesday morning.

- Locally heavy rainfall is possible through Tuesday morning, but
  confidence relatively higher in flash flooding across central
  MO tonight into Monday morning. An isolated severe thunderstorm
  with damaging winds and/or brief, weak tornado is also possible
  this evening and again Monday afternoon and evening.

- Heat and humidity will build Tuesday into Thursday with high
  temperatures reaching the 90s F and afternoon heat index values
  exceeding 100 F in some locations.

&&

.SHORT TERM...  (Through Late Monday Night)
Issued at 257 PM CDT Sun Jun 7 2026

An upper-level low will continue to slowly migrate northeastward
across the Mid-Mississippi River Valley through late Monday,
providing episodic showers and thunderstorms across the CWA as lobes
of associated mid-level vorticity and/or MCVs rotate cyclonically
around the parent low. Due to the broad/ill-defined large-scale
forcing and influence of previous rounds of showers and
thunderstorms, CAMs and model guidance as a whole have struggled to
come into agreement on the exact evolution of the upper-level low
and resulting timing and coverage of showers and thunderstorms. On
Monday afternoon/evening, HREF membership has the greatest coverage
shifting to along/east of the Mississippi River or beneath and
downstream of the upper-level low. Although mid-level heights will
be unfavorably rising Monday night, a lingering diffuse boundary has
been indicated by some model guidance to exist Monday night along
with potential interaction from a LLJ in addition to an upstream MCS
or MCV tracking along that boundary early Tuesday morning. This
evolution results in an increasingly uncertain forecast in terms of
showers and thunderstorms, especially Monday night through Tuesday
morning with a wide range of scenarios possible include those with
very little or only isolated showers and thunderstorms.

With precipitable water flirting with 2" (99th climatological
percentile) and deep warm cloud depths combined with kinematic
profiles favorable for some organization of thunderstorms into
clusters or small MCSs with training and backbuilding, locally heavy
rainfall continues to be a concern through Monday night. Confidence
in the threat of flash flooding has increased sufficiently to issue
a Flood Watch for portions of central MO where multiple rounds of
heavy rainfall are likely on top of 1 to 3" of rain that fell and
has moistened soils. Elsewhere, we are missing this preconditioning
of soils, lowering confidence in flash flooding at this point,
especially considering a lack of coherent or consistent high-QPF
signal in CAMs.

In addition to heavy rainfall there is also a low threat of severe
thunderstorms this afternoon/evening and again on Monday. The latest
SPC mesoanalysis depicts 1000 to 1500 J/kg MLCAPE including 100+
J/kg 0-3 km CAPE and 20 to 25 kt effective wind shear along with
just enough low-level hodograph curvature to support a low, brief
tornado or isolated damaging wind threat with a potential low-
topped, transient supercell. However, the more favorable environment
is across southwestern and southern MO. On Monday, the environment
is significantly more variable with wind shear magnitude and
hodograph structure sensitive to both the presence of a potential
remnant MCV from overnight thunderstorms in southwestern
MO/southeastern KS and arrival of a mid-level jet streak on the heel
of the upper-level low. HREF joint probabilities of 1000+ J/kg
SBCAPE and 25+ kt deep-layer wind shear are greatest (50 to 70
percent) late Monday afternoon along/west of the Mississippi River,
but the best overlap with stronger large-scale forcing appears to be
across southeastern MO. However, confidence is low in the placement.
At least isolated damaging winds are possible, with a low tornado
threat possible if wind shear sufficient for supercells is realized.

With regards to temperatures, early day cloud cover and showers and
thunderstorms at times are expected to keep high temperatures on
Monday in the 80s F. On Tuesday, there could be some morning cloud
debris or lingering showers or thunderstorms, but an upper-level
ridge axis shifting overhead will favor increasingly dry conditions
and scattering of any cloud cover. With low-level southerly flow
will also act to warm 850-hPa temperatures to near the 99th
climatological percentile, supporting high temperatures in the upper
80s to low-90s F. With dewpoints well into the 70s F, ensemble model
guidance has 30 percent probabilities of 100+ F heat index values
during the afternoon and evening.

Pfahler

&&

.LONG TERM...  (Tuesday through Next Sunday)
Issued at 257 PM CDT Sun Jun 7 2026

Global model guidance is trending toward a slightly quicker eastward
shift/break down of the ridge as upper-level troughing takes place
across the Northern Plains. This evolution has led to slightly
cooler temperatures on Wednesday, but confidence is still high that
it will be the warmest day of the week with much of the CWA seeing
high temperatures in the 90s F given an approaching 850-hPa thermal
ridge and potential downsloping of low-level southwesterly flow off
the Ozark Plateau. Despite being warmer on Wednesday, dewpoints may
tend to diurnally lower during peak heating, decreasing confidence
that heat index values will be much higher than Tuesday. Model
guidance is consensus that a shortwave trough rounding the broader
longwave trough will force a cold front into the CWA sometime
Thursday, providing another opportunity for showers and
thunderstorms along with cooling temperatures closer to average.
However, this front may waver across the Mid-Mississippi River
Valley into the upcoming weekend, prolonging chances of showers and
thunderstorms.

Pfahler

&&

.AVIATION...  (For the 00z TAFs through 00z Monday Evening)
Issued at 551 PM CDT Sun Jun 7 2026

Ongoing showers and thunderstorms across central Missouri are
expected to begin moving more to the east over the first several
hours of the TAF period. This will bring thunderstorm chances into
the mid-Missouri terminals, though how long the terminals are
impacted remains uncertain at this time. Showers and thunderstorms
will continue to form and move northeast to east across Missouri,
impacting the St. Louis metro and Quincy terminals overnight.
There is uncertainty with where exactly thunderstorms will move,
though confidence is high that thunderstorms will continue to
impact the broader region overnight. With any thunderstorms MVFR
ceilings and brief reductions in visibility are expected.

MVFR ceilings are expected to build into the region overnight from
increased near surface moisture, and linger into the late morning
before mixing is able to raising ceilings to VFR after noon.

Delia

&&

.LSX WATCHES/WARNINGS/ADVISORIES...
MO...Flood Watch through Monday afternoon for Boone MO-Callaway MO-
     Cole MO-Moniteau MO-Osage MO.

IL...None.
&&

WFO LSX

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 7, 8:23 PM CDTAreal Flood AdvisoryLSXBoone, Callaway, Cole71 min
Jun 7, 8:43 PM CDTRiver Flood WarningLSXCallaway, Osage4 days
Jun 7, 9:33 PM CDTFlash Flood WarningLSXBoone, Callaway, Cole, Moniteau3 hr
Jun 7, 10:42 PM CDTFlash Flood WarningLSXAudrain, Boone, Callaway, Moniteau3 hr
Jun 8, 12:06 AM CDTRiver Flood WarningLSXBoone11 hr
Jun 8, 12:06 AM CDTRiver Flood WarningLSXCole52 hr
Jun 8, 12:56 AM CDTAreal Flood WarningLSXBoone, Callaway, Cole, Moniteau8 hr
Jun 8, 1:34 AM CDTAreal Flood WarningLSXAudrain, Boone, Callaway, Moniteau7 hr
Jun 8, 5:11 AM CDTRiver Flood WarningLSXBoone, Callaway, Cole, Moniteau37 hr
Jun 8, 5:11 AM CDTRiver Flood WarningLSXCole, Osage3 days
Jun 8, 8:10 AM CDTAreal Flood AdvisoryLSXFranklin, Jefferson, Saint Charles, Saint Louis2 hr
Jun 8, 8:12 AM CDTAreal Flood AdvisoryLSXCrawford, Franklin, Gasconade, Washington60 min
Jun 8, 9:12 AM CDTFlash Flood WarningLSXCrawford, Franklin, Gasconade, Washington3 hr
Jun 8, 9:16 AM CDTAreal Flood AdvisoryLSXSaint Charles, Saint Louis, City of Saint Louis105 min
Jun 8, 10:32 AM CDTFlash Flood WarningLSXFranklin, Jefferson, Saint Charles, Saint Louis, Warren3 hr
Jun 8, 10:46 AM CDTFlash Flood WarningLSXSaint Charles, Saint Louis, City of Saint Louis3 hr
Jun 8, 11:27 AM CDTRiver Flood WarningLSXFranklin, Warren3 days
Jun 8, 11:27 AM CDTRiver Flood WarningLSXSaint Charles, Saint Louis62 hr
Jun 8, 11:44 AM CDTHeat AdvisoryLSXAudrain, Boone, Callaway, Cole, Crawford, Franklin and 23 more32 hr
Jun 8, 5:03 PM CDTSevere Thunderstorm WarningLSXPike42 min

Nearby

River 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.