Alert archive / Missouri / River Flood Warnings in 2021
River Flood Warning 91, NWS St. Louis, MO
NWS St. Louis, MO issued this river flood warning at May 19, 2021, 9:45 AM CDT for Callaway County, Osage County, Missouri. It took effect at May 19, 2021, 2:30 PM CDT. It was in force for 55 hr.
The area
The outline as issued.
The facts
- Issued
- May 19, 2021, 9:45 AM CDT (14:45 UTC)
- In effect from
- May 19, 2021, 2:30 PM CDT
- Expired
- May 21, 2021, 9:24 PM CDT
- In force
- 55 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- Minor
Counties Callaway County, MO, Osage County, MO
The radar
The St Louis radar (KLSX), 100 km from the middle of the area, began a volume at 14:44 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 near Chamois (CMSM7).
- Action stage
- 15 ft
- Minor stage
- 17 ft
- Moderate stage
- 28 ft
- Major stage
- 31 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record, 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.
196
WGUS43 KLSX 191445
FLWLSX
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service St Louis MO
945 AM CDT Wed May 19 2021
...The National Weather Service in St Louis MO has issued a Flood
Warning for the following river 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.
This product, along with additional weather and stream information,
is available at https://water.weather.gov/ahps2/index.php?wfo=lsx.
&&
MOC027-151-210245-
/O.NEW.KLSX.FL.W.0091.210519T1930Z-210522T0224Z/
/CMSM7.1.ER.210519T1930Z.210520T0600Z.210520T1424Z.NO/
945 AM CDT Wed May 19 2021
The National Weather Service in St Louis has issued a
* Flood Warning for
the Missouri River near Chamois.
* From this afternoon to Friday evening.
* At 7:50 AM CDT Wednesday the stage was 16.1 feet.
* Flood stage is 17.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage this
afternoon to a crest of 17.4 feet just after midnight tonight. It
will then fall below flood stage late tomorrow morning.
* Impact...At 17.0 feet, Flood Stage: Lower lying bottom land
begins to flood.
&&
Fld Observed Forecasts (7 am CDT)
Location Stg Stg Day/Time Thu Fri Sat Sun Mon
Missouri River
Chamois 17.0 16.1 Wed 7 am 17.2 14.6 12.9 12.4 11.9
&&
LAT...LON 3864 9198 3871 9185 3873 9161 3866 9161
3865 9190 3858 9194
$$
MOC073-139-210245-
/O.NEW.KLSX.FL.W.0092.210520T0200Z-210522T0000Z/
/HRNM7.1.ER.210520T0200Z.210520T0600Z.210520T1800Z.NO/
945 AM CDT Wed May 19 2021
The National Weather Service in St Louis has issued a
* Flood Warning for
the Missouri River at Hermann.
* From this evening to Friday evening.
* At 9:30 AM CDT Wednesday the stage was 20.2 feet.
* Flood stage is 21.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late
this evening to a crest of 21.2 feet just after midnight tonight.
It will then fall below flood stage early tomorrow afternoon.
* Impact...At 21.3 feet, The southern end of School House Road south
of Rhineland begins flooding near this height.
&&
Fld Observed Forecasts (7 am CDT)
Location Stg Stg Day/Time Thu Fri Sat Sun Mon
Missouri River
Hermann 21.0 20.2 Wed 9 am 21.2 19.3 17.3 16.6 16.1
&&
LAT...LON 3873 9161 3875 9136 3866 9119 3861 9123
3866 9139 3866 9161
$$
Byrd3 follow-up statements
993
WGUS83 KLSX 200145
FLSLSX
Flood Statement
National Weather Service St Louis MO
845 PM CDT Wed May 19 2021
...The Flood Warning is extended for the following rivers in
Missouri...
Missouri River at Hermann.
...The Flood Warning continues for the following rivers in
Missouri...
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.weather.gov/ahps2/index.php?wfo=lsx.
&&
MOC073-139-211345-
/O.EXT.KLSX.FL.W.0092.210520T0330Z-210522T0000Z/
/HRNM7.1.ER.210520T0330Z.210520T0600Z.210520T1800Z.NO/
845 PM CDT Wed May 19 2021
...The Flood Warning is now in effect until Friday evening...
The Flood Warning continues for
the Missouri River at Hermann.
* Until Friday evening.
* At 8:30 PM CDT Wednesday the stage was 20.8 feet.
* Flood stage is 21.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late
this evening to a crest of 21.2 feet just after midnight tonight.
It will then fall below flood stage early tomorrow afternoon.
* Impact...At 21.3 feet, The southern end of School House Road south
of Rhineland begins flooding near this height.
&&
Fld Observed Forecasts (7 pm CDT)
Location Stg Stg Day/Time Thu Fri Sat Sun Mon
Missouri River
Hermann 21.0 20.8 Wed 8 pm 20.6 18.1 16.8 16.4 15.3
&&
LAT...LON 3873 9161 3875 9136 3866 9119 3861 9123
3866 9139 3866 9161
$$
MOC027-151-211345-
/O.CON.KLSX.FL.W.0091.000000T0000Z-210522T0224Z/
/CMSM7.1.ER.210520T0043Z.210520T0600Z.210520T1424Z.NO/
845 PM CDT Wed May 19 2021
...The Flood Warning remains in effect...
The Flood Warning continues for
the Missouri River near Chamois.
* Until late Friday evening.
* At 8:40 PM CDT Wednesday the stage was estimated to be near 17.3
feet.
* Flood stage is 17.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise to a crest of 17.4 feet
just after midnight tonight. It will then fall below flood stage
late tomorrow morning.
* Impact...At 17.0 feet, Flood Stage: Lower lying bottom land
begins to flood.
&&
Fld Observed Forecasts (7 pm CDT)
Location Stg Stg Day/Time Thu Fri Sat Sun Mon
Missouri River
Chamois 17.0 16.1 Wed 7 am 16.1 13.5 12.5 12.2 10.9
&&
LAT...LON 3864 9198 3871 9185 3873 9161 3866 9161
3865 9190 3858 9194
$$
Maples848
WGUS83 KLSX 200205
FLSLSX
Flood Statement
National Weather Service St Louis MO
905 PM CDT Wed May 19 2021
...The Flood Warning continues 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.
This product, along with additional weather and stream information,
is available at https://water.weather.gov/ahps2/index.php?wfo=lsx.
&&
MOC027-151-211415-
/O.EXT.KLSX.FL.W.0091.000000T0000Z-210521T1800Z/
/CMSM7.1.ER.210520T0043Z.210520T0600Z.210520T0600Z.NO/
905 PM CDT Wed May 19 2021
...The Flood Warning is now in effect until early Friday afternoon...
The Flood Warning continues for
the Missouri River near Chamois.
* Until early Friday afternoon.
* At 8:40 PM CDT Wednesday the stage was estimated to be near 17.0
feet.
* Flood stage is 17.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise to a crest of 17.0 feet
just after midnight tonight.
* Impact...At 17.0 feet, Flood Stage: Lower lying bottom land
begins to flood.
&&
Fld Observed Forecasts (7 pm CDT)
Location Stg Stg Day/Time Thu Fri Sat Sun Mon
Missouri River
Chamois 17.0 17.0E Wed 9 pm 16.1 13.5 12.5 12.5 11.6
E-Estimated
&&
LAT...LON 3864 9198 3871 9185 3873 9161 3866 9161
3865 9190 3858 9194
$$
MOC073-139-211415-
/O.EXT.KLSX.FL.W.0092.210520T0600Z-210521T1800Z/
/HRNM7.1.ER.210520T0600Z.210520T0600Z.210520T1200Z.NO/
905 PM CDT Wed May 19 2021
...The Flood Warning is now in effect until early Friday afternoon...
The Flood Warning continues for
the Missouri River at Hermann.
* From late tonight to early Friday afternoon.
* At 8:30 PM CDT Wednesday the stage was 20.8 feet.
* Flood stage is 21.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage just
after midnight tonight to a crest of 21.0 feet just after midnight
tonight. It will then fall below flood stage tomorrow morning.
* Impact...At 21.0 feet, Minor flooding of cropland begins...
particularly just north of the Highway 19 bridge along the Loutre
River.
&&
Fld Observed Forecasts (7 pm CDT)
Location Stg Stg Day/Time Thu Fri Sat Sun Mon
Missouri River
Hermann 21.0 20.8 Wed 8 pm 20.5 18.1 16.7 16.6 15.9
&&
LAT...LON 3873 9161 3875 9136 3866 9119 3861 9123
3866 9139 3866 9161
$$
Maples264
WGUS83 KLSX 201535
FLSLSX
Flood Statement
National Weather Service St Louis MO
1035 AM CDT Thu May 20 2021
...The Flood Warning is cancelled for the following river in
Missouri...
Missouri River at Hermann.
Missouri River near Chamois.
River forecasts are based on observed precipitation and forecast
precipitation for the next 24 hours.
MOC073-139-201645-
/O.CAN.KLSX.FL.W.0092.000000T0000Z-210520T1535Z/
/HRNM7.1.ER.210520T0600Z.210520T0600Z.210520T1200Z.NO/
1035 AM CDT Thu May 20 2021
...The Flood Warning for the Missouri River at Hermann has been
cancelled...
The Flood Warning is cancelled for
the Missouri River at Hermann.
* At 9:30 AM CDT Thursday the stage was 20.8 feet.
* Flood stage is 21.0 feet.
* Forecast...The river is expected to fall to 13.6 feet Thursday
morning.
&&
Fld Observed Forecasts (1 pm CDT)
Location Stg Stg Day/Time Fri Sat Sun Mon Tue
Missouri River
Hermann 21.0 20.8 Thu 9 am 18.6 17.4 17.9 18.0 16.3
&&
LAT...LON 3873 9161 3875 9136 3866 9119 3861 9123
3866 9139 3866 9161
$$
MOC027-151-201645-
/O.CAN.KLSX.FL.W.0091.000000T0000Z-210520T1535Z/
/CMSM7.1.ER.210520T0043Z.210520T0600Z.210520T0600Z.NO/
1035 AM CDT Thu May 20 2021
...The Flood Warning for the Missouri River near Chamois has been
cancelled...
The Flood Warning is cancelled for
the Missouri River near Chamois.
* At 7:45 AM CDT Thursday the stage was 16.4 feet.
* Flood stage is 17.0 feet.
* Forecast...The river is expected to fall to 12.3 feet Tuesday
morning.
&&
Fld Observed Forecasts (1 pm CDT)
Location Stg Stg Day/Time Fri Sat Sun Mon Tue
Missouri River
Chamois 17.0 16.4 Thu 7 am 14.0 13.1 14.0 13.7 MSG
&&
LAT...LON 3864 9198 3871 9185 3873 9161 3866 9161
3865 9190 3858 9194
$$
MRMThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 19, 9:45 AM CDT | River Flood Warning | LSX | Gasconade, Montgomery | 57 hr |
Nearby
River Flood Warnings in Missouri, 2021Every river flood warning in 2021
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.