Alert archive / Missouri / River Flood Warnings in 2020
River Flood Warning 117, NWS St. Louis, MO
NWS St. Louis, MO issued this river flood warning at May 16, 2020, 9:14 PM CDT for Saint Charles County, Missouri; Madison County, Illinois. It took effect at May 18, 2020, 1:00 AM CDT. It was in force for 4 days.
The area
The outline as issued.
The facts
- Issued
- May 16, 2020, 9:14 PM CDT (02:14 UTC)
- In effect from
- May 18, 2020, 1:00 AM CDT
- Expired
- May 21, 2020, 9:06 PM CDT
- In force
- 4 days
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- Minor
Counties Madison County, IL, Saint Charles County, MO
The radar
The St Louis radar (KLSX), 45 km from the middle of the area, began a volume at 02:13 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 Mississippi River at Mel Price (Alton) Lock and Dam (ALNI2).
- Action stage
- 19 ft
- Minor stage
- 21 ft
- Moderate stage
- 29 ft
- Major stage
- 34 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record for site 05587541, 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.
224
WGUS43 KLSX 170214
FLWLSX
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service St Louis MO
914 PM CDT Sat May 16 2020
...The National Weather Service in St. Louis has issued a flood
warning for the following rivers in Illinois...Missouri...
Mississippi River...
at Mel Price LD
at Chester
River forecasts are based on observed precipitation and forecast
precipitation for the next 24 hours.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 or forecasts change.
Safety message: Never drive cars, trucks, or sport utility vehicles
through flooded areas. The water may be too deep to allow for safe
passage.
This product, along with additional weather and stream information,
is available at http://water.weather.gov/ahps2/index.php?wfo=lsx.
&&
ILC119-MOC183-180214-
/O.NEW.KLSX.FL.W.0117.200519T0600Z-200523T0130Z/
/ALNI2.1.ER.200519T0600Z.200520T1200Z.200521T1930Z.NO/
914 PM CDT Sat May 16 2020
The National Weather Service in St. Louis has issued a
* Flood Warning for
The Mississippi River at Mel Price LD.
* from late Monday night to Friday evening.
* At 9:00 PM Saturday the stage was 16.5 feet.
* Flood stage is 21.0 feet.
* Minor flooding is forecast.
* The river will rise above flood stage by early Tuesday morning and
crest near 22.0 feet by Wednesday morning.the river will fall below
flood stage by Thursday early afternoon.
* Impact: At 21.0 feet...Flood Stage. Minor flooding begins to occur
at this level.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/17 05/18 05/19 05/20 05/21
Mississippi River
Mel Price LD 21.0 16.49 17.5 19.7 21.3 22.0 21.5
&&
LAT...LON 3891 9033 3895 9028 3883 9003 3881 9017
3886 9017
$$
ILC077-157-MOC157-186-180214-
/O.NEW.KLSX.FL.W.0118.200518T1851Z-000000T0000Z/
/CHSI2.1.ER.200518T1851Z.200521T1200Z.000000T0000Z.NO/
914 PM CDT Sat May 16 2020
The National Weather Service in St. Louis has issued a
* Flood Warning for
the Mississippi River at Chester
* from Monday afternoon until further notice.
* At 9:00 PM Saturday the stage was 23.1 feet.
* Flood stage is 27.0 feet.
* Minor flooding is forecast.
* The river is forecast to rise above flood stage by Monday early
afternoon and continue to crest near 31.2 feet by Thursday morning.
* Impact: At 28.0 feet...Unleveed islands near Chester and the prison
farm floods.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/17 05/18 05/19 05/20 05/21
Mississippi River
Chester 27.0 23.06 23.6 26.1 28.9 30.6 31.2
&&
LAT...LON 3826 9043 3826 9030 3769 8935 3769 8959
3787 9003
$$10 follow-up statements
044
WGUS83 KLSX 171655
FLSLSX
Flood Statement
National Weather Service St Louis MO
1155 AM CDT Sun May 17 2020
...The flood warning continues for the Mississippi
River at the following Locations...
Mississippi River at Clarksville
Mississippi River at Grafton
Mississippi River at Mel Price LD
Mississippi River at Chester
River forecasts are based on observed precipitation and forecast
precipitation for the next 24 hours.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 or forecasts change.
Safety message: Never drive cars, trucks, or sport utility vehicles
through flooded areas. The water may be too deep to allow for safe
passage.
This product, along with additional weather and stream information,
is available at http://water.weather.gov/ahps2/index.php?wfo=lsx.
&&
ILC013-MOC163-182255-
/O.EXT.KLSX.FL.W.0120.200517T2100Z-200520T0900Z/
/CLKM7.1.ER.200517T2100Z.200518T0600Z.200519T0300Z.NO/
1155 AM CDT Sun May 17 2020
The Flood Warning continues for
the Mississippi River at Clarksville
* from this afternoon to late Tuesday night.
* At 11:30 AM Sunday the stage was 24.9 feet.
* Flood stage is 25.0 feet.
* Minor flooding is forecast.
* The river is forecast to rise above flood stage by late this
afternoon and crest near 25.2 feet after midnight tonight. The
river will fall below flood stage tomorrow evening.
* Impact: At 23.5 feet...Flooding begins in unprotected areas.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/18 05/19 05/20 05/21 05/22
Mississippi River
Clarksville 25.0 24.94 25.2 24.8 24.3 23.5 22.8
&&
LAT...LON 3939 9097 3945 9089 3938 9077 3923 9071
3922 9081
$$
ILC083-MOC183-182255-
/O.EXT.KLSX.FL.W.0115.000000T0000Z-200524T1500Z/
/GRFI2.1.ER.200517T1007Z.200520T0600Z.200523T0900Z.NO/
1155 AM CDT Sun May 17 2020
The Flood Warning continues for
the Mississippi River at Grafton
* until Sunday May 24.
* At 11:30 AM Sunday the stage was 18.7 feet.
* Flood stage is 18.0 feet.
* Minor flooding is forecast.
* The river is forecast to crest near 20.5 feet by early Wednesday
morning, then fall below flood stage next Saturday morning.
* Impact: At 18.0 feet...Flood Stage. Right bank begins to
overflow...flooding farmland.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/18 05/19 05/20 05/21 05/22
Mississippi River
Grafton 18.0 18.73 19.8 20.3 20.5 19.8 18.8
&&
LAT...LON 3881 9057 3888 9057 3899 9046 3895 9028
3882 9048
$$
ILC119-MOC183-182255-
/O.EXT.KLSX.FL.W.0117.200518T1930Z-200523T0130Z/
/ALNI2.1.ER.200518T1930Z.200520T0600Z.200521T1930Z.NO/
1155 AM CDT Sun May 17 2020
The Flood Warning continues for
the Mississippi River at Mel Price LD
* from Monday afternoon to Friday evening.
* At 11:30 AM Sunday the stage was 18.9 feet.
* Flood stage is 21.0 feet.
* Minor flooding is forecast.
* The river is forecast to rise above flood stage early tomorrow
afternoon and crest near 22.2 feet early Wednesday morning. The
river will fall below flood stage Thursday afternoon.
* Impact: At 21.0 feet...Flood Stage. Minor flooding begins to occur
at this level.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/18 05/19 05/20 05/21 05/22
Mississippi River
Mel Price LD 21.0 18.89 20.5 21.8 22.2 21.4 20.0
&&
LAT...LON 3891 9033 3895 9028 3883 9003 3881 9017
3886 9017
$$
ILC077-157-MOC157-186-182255-
/O.EXT.KLSX.FL.W.0118.200518T1040Z-000000T0000Z/
/CHSI2.1.ER.200518T1040Z.200521T0600Z.000000T0000Z.NO/
1155 AM CDT Sun May 17 2020
The Flood Warning continues for
the Mississippi River at Chester
* from late tonight until further notice.
* At 11:30 AM Sunday the stage was 24.6 feet.
* Flood stage is 27.0 feet.
* Minor flooding is forecast.
* The river is forecast to rise above flood stage early tomorrow morning
and crest near 32.0 feet early Thursday morning.
* Impact: At 28.0 feet...Unleveed islands near Chester and the prison
farm floods.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/18 05/19 05/20 05/21 05/22
Mississippi River
Chester 27.0 24.65 27.2 30.2 31.5 32.0 31.3
&&
LAT...LON 3826 9043 3826 9030 3769 8935 3769 8959
3787 9003
$$009
WGUS83 KLSX 180254
FLSLSX
Flood Statement
National Weather Service St Louis MO
954 PM CDT Sun May 17 2020
...The flood warning continues for the following rivers in
Illinois...Missouri...
Mississippi River...
at Hannibal
at Louisiana
at Clarksville
at Grafton
at Mel Price LD
at Chester
River forecasts are based on observed precipitation and forecast
precipitation for the next 24 hours.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 or forecasts change.
Safety message: Never drive cars, trucks, or sport utility vehicles
through flooded areas. The water may be too deep to allow for safe
passage.
This product, along with additional weather and stream information,
is available at http://water.weather.gov/ahps2/index.php?wfo=lsx.
&&
ILC149-MOC127-190253-
/O.EXT.KLSX.FL.W.0127.200518T0306Z-200519T1800Z/
/HNNM7.1.ER.200518T0306Z.200518T0600Z.200518T1200Z.NO/
954 PM CDT Sun May 17 2020
The Flood Warning continues for
the Mississippi River at Hannibal
* until Tuesday afternoon.
* At 9:15 PM Sunday the stage was 16.0 feet.
* Flood stage is 16.0 feet.
* Minor flooding is forecast.
* The river is forecast to rise above flood stage by tonight and to
crest near 16.1 feet by after midnight tonight. The river is
forecast to fall below flood stage by tomorrow morning.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/18 05/19 05/20 05/21 05/22
Mississippi River
Hannibal 16.0 15.97 16.0 15.6 15.3 14.9 14.5
&&
LAT...LON 3983 9148 3983 9135 3974 9121 3967 9135
$$
ILC149-MOC163-190253-
/O.EXT.KLSX.FL.W.0128.000000T0000Z-200521T0000Z/
/LUSM7.1.ER.200517T2257Z.200518T1200Z.200519T1800Z.NO/
954 PM CDT Sun May 17 2020
The Flood Warning continues for
the Mississippi River at Louisiana
* until Wednesday evening.
* At 9:30 PM Sunday the stage was 15.2 feet.
* Flood stage is 15.0 feet.
* Minor flooding is forecast.
* The river is forecast to crest near 15.6 feet by tomorrow morning,
then fall below flood stage Tuesday early afternoon.
* Impact: At 15.0 feet...The first quarter mile of Edison Avenue
beyond the railroad tracks begins flooding near this height.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/18 05/19 05/20 05/21 05/22
Mississippi River
Louisiana 15.0 15.16 15.6 15.1 14.6 13.9 13.3
&&
LAT...LON 3945 9111 3952 9097 3945 9089 3939 9097
$$
ILC013-MOC163-190253-
/O.EXT.KLSX.FL.W.0120.000000T0000Z-200521T1500Z/
/CLKM7.1.ER.200517T1737Z.200518T1800Z.200520T0900Z.NO/
954 PM CDT Sun May 17 2020
The Flood Warning continues for
the Mississippi River at Clarksville
* until Thursday morning.
* At 9:30 PM Sunday the stage was 25.3 feet.
* Flood stage is 25.0 feet.
* Minor flooding is forecast.
* The river is forecast to crest near 26.0 feet by tomorrow early
afternoon, then fall below flood stage Wednesday morning.
* Impact: At 25.5 feet...State Route P east of Elsberry begins
flooding just east of the levee.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/18 05/19 05/20 05/21 05/22
Mississippi River
Clarksville 25.0 25.33 25.8 25.6 24.9 24.0 23.2
&&
LAT...LON 3939 9097 3945 9089 3938 9077 3923 9071
3922 9081
$$
ILC083-MOC183-190253-
/O.EXT.KLSX.FL.W.0115.000000T0000Z-000000T0000Z/
/GRFI2.1.ER.200517T1007Z.200519T1800Z.000000T0000Z.NO/
954 PM CDT Sun May 17 2020
The Flood Warning continues for
the Mississippi River at Grafton
* until further notice.
* At 9:30 PM Sunday the stage was 19.8 feet.
* Flood stage is 18.0 feet.
* Minor flooding is forecast.
* The river is forecast to crest near 21.2 feet by Tuesday early
afternoon.
* Impact: At 21.0 feet...Water begins flooding the floor at the
Palisades Marina in Portage Des Sioux. Access to homes along North
Shore Drive in eastern St. Charles County becomes cut off near this
height.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/18 05/19 05/20 05/21 05/22
Mississippi River
Grafton 18.0 19.81 20.4 21.1 21.1 20.2 19.0
&&
LAT...LON 3881 9057 3888 9057 3899 9046 3895 9028
3882 9048
$$
ILC119-MOC183-190253-
/O.EXT.KLSX.FL.W.0117.200518T0600Z-200523T1630Z/
/ALNI2.1.ER.200518T0600Z.200520T0000Z.200522T1030Z.NO/
954 PM CDT Sun May 17 2020
The Flood Warning continues for
the Mississippi River at Mel Price LD
* from late tonight to Saturday morning.
* At 9:30 PM Sunday the stage was 20.6 feet.
* Flood stage is 21.0 feet.
* Minor flooding is forecast.
* The river is forecast to rise above flood stage by after midnight
tonight and crest near 23.5 feet by Tuesday evening.The river will
fall below flood stage by Friday morning.
* Impact: At 23.0 feet...Dresser Island Drive floods within a foot of
this level.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/18 05/19 05/20 05/21 05/22
Mississippi River
Mel Price LD 21.0 20.58 21.7 23.2 23.5 22.6 20.9
&&
LAT...LON 3891 9033 3895 9028 3883 9003 3881 9017
3886 9017
$$
ILC077-157-MOC157-186-190253-
/O.EXT.KLSX.FL.W.0118.200518T0632Z-000000T0000Z/
/CHSI2.1.ER.200518T0632Z.200521T1200Z.000000T0000Z.NO/
954 PM CDT Sun May 17 2020
The Flood Warning continues for
the Mississippi River at Chester
* from late tonight until further notice.
* At 9:30 PM Sunday the stage was 26.3 feet.
* Flood stage is 27.0 feet.
* Minor flooding is forecast.
* The river is forecast to rise above flood stage by after midnight
tonight and crest near 32.7 feet by Thursday morning.
* Impact: At 32.5 feet...The Road at Fort Gage Farm begins flooding
at Menard Correctional Center.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/18 05/19 05/20 05/21 05/22
Mississippi River
Chester 27.0 26.30 28.0 31.0 32.0 32.7 32.0
&&
LAT...LON 3826 9043 3826 9030 3769 8935 3769 8959
3787 9003
$$
maples154
WGUS83 KLSX 181857
FLSLSX
Flood Statement
National Weather Service St Louis MO
157 PM CDT Mon May 18 2020
...The flood warning continues for the Mississippi River
at the following...
Mississippi River at Clarksville
Mississippi River at Winfield
Mississippi River at Mel Price LD
Mississippi River at Chester
Illinois River at Meredosia
Mississippi River at Grafton
River forecasts are based on observed precipitation and forecast
precipitation for the next 24 hours.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 or forecasts change.
Safety message: Never drive cars, trucks, or sport utility vehicles
through flooded areas. The water may be too deep to allow for safe
passage.
This product, along with additional weather and stream information,
is available at http://water.weather.gov/ahps2/index.php?wfo=lsx.
&&
ILC137-149-200057-
/O.CON.KLSX.FL.W.0113.000000T0000Z-000000T0000Z/
/MROI2.3.ER.200430T1250Z.200524T1800Z.000000T0000Z.NO/
157 PM CDT Mon May 18 2020
The Flood Warning continues for
the Illinois River at Meredosia
* until further notice.
* At 1:00 PM Monday the stage was 19.3 feet.
* Flood stage is 17.0 feet.
* Major flooding is forecast.
* The river is forecast to continue rising to near 24.2 feet by
Sunday early afternoon. Additional rises may be possible
thereafter.
* Impact: At 24.0 feet...Kochs Lane east of Shady Acres begins
flooding.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/19 05/20 05/21 05/22 05/23
Illinois River
Meredosia 17.0 19.28 20.1 21.0 21.9 22.7 23.5
&&
LAT...LON 3988 9063 3988 9051 3977 9053 3977 9067
$$
ILC013-MOC163-200057-
/O.EXT.KLSX.FL.W.0120.000000T0000Z-200520T0900Z/
/CLKM7.1.ER.200517T1737Z.200518T0800Z.200519T0300Z.NO/
157 PM CDT Mon May 18 2020
The Flood Warning continues for
the Mississippi River at Clarksville
* until late Tuesday night.
* At 1:30 PM Monday the stage was 25.3 feet.
* Flood stage is 25.0 feet.
* Minor flooding is forecast.
* The river is forecast to continue falling to below flood stage by
tonight.
* Impact: At 23.5 feet...Flooding begins in unprotected areas.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/19 05/20 05/21 05/22 05/23
Mississippi River
Clarksville 25.0 25.27 24.6 23.9 23.4 22.9 22.6
&&
LAT...LON 3939 9097 3945 9089 3938 9077 3923 9071
3922 9081
$$
ILC013-MOC113-200057-
/O.EXT.KLSX.FL.W.0129.000000T0000Z-200521T0200Z/
/CAGM7.1.ER.200518T0600Z.200519T0000Z.200519T2000Z.NO/
157 PM CDT Mon May 18 2020
The Flood Warning continues for
the Mississippi River at Winfield
* until Wednesday evening.
* At 1:30 PM Monday the stage was 26.2 feet.
* Flood stage is 26.0 feet.
* Minor flooding is forecast.
* The river is forecast to crest near 26.3 feet this evening, then
fall below flood stage tomorrow afternoon.
* Impact: At 23.0 feet...A few local islands begin to flood.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/19 05/20 05/21 05/22 05/23
Mississippi River
Winfield 26.0 26.21 26.2 25.3 23.9 23.1 22.8
&&
LAT...LON 3922 9081 3923 9071 3888 9057 3881 9057
3887 9074
$$
ILC083-MOC183-200057-
/O.CON.KLSX.FL.W.0115.000000T0000Z-000000T0000Z/
/GRFI2.1.ER.200517T1007Z.200519T1200Z.000000T0000Z.NO/
157 PM CDT Mon May 18 2020
The Flood Warning continues for
the Mississippi River at Grafton
* until further notice.
* At 1:30 PM Monday the stage was 20.6 feet.
* Flood stage is 18.0 feet.
* Minor flooding is forecast.
* The river is forecast to crest near 21.1 feet by tomorrow morning.
* Impact: At 21.0 feet...Water begins flooding the floor at the
Palisades Marina in Portage Des Sioux. Access to homes along North
Shore Drive in eastern St. Charles County becomes cut off near this
height.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/19 05/20 05/21 05/22 05/23
Mississippi River
Grafton 18.0 20.59 21.1 20.9 19.8 19.0 18.7
&&
LAT...LON 3881 9057 3888 9057 3899 9046 3895 9028
3882 9048
$$
ILC119-MOC183-200057-
/O.EXT.KLSX.FL.W.0117.000000T0000Z-200523T0600Z/
/ALNI2.1.ER.200518T0630Z.200520T0000Z.200522T0000Z.NO/
157 PM CDT Mon May 18 2020
The Flood Warning continues for
the Mississippi River at Mel Price LD
* until late Friday night.
* At 1:30 PM Monday the stage was 21.8 feet.
* Flood stage is 21.0 feet.
* Minor flooding is forecast.
* The river is forecast to crest near 23.1 feet tomorrow evening,
then fall below flood stage Thursday evening.
* Impact: At 23.0 feet...Dresser Island Drive floods within a foot of
this level.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/19 05/20 05/21 05/22 05/23
Mississippi River
Mel Price LD 21.0 21.80 22.9 23.0 21.8 20.2 19.1
&&
LAT...LON 3891 9033 3895 9028 3883 9003 3881 9017
3886 9017
$$
ILC077-157-MOC157-186-200057-
/O.EXT.KLSX.FL.W.0118.000000T0000Z-200525T0900Z/
/CHSI2.1.ER.200518T0633Z.200521T0600Z.200524T0300Z.NO/
157 PM CDT Mon May 18 2020
The Flood Warning continues for
the Mississippi River at Chester
* until Monday May 25.
* At 1:30 PM Monday the stage was 28.6 feet.
* Flood stage is 27.0 feet.
* Minor flooding is forecast.
* The river is forecast to crest near 32.4 feet early Thursday
morning, then fall below flood stage Saturday before midnight.
* Impact: At 31.5 feet...In Perry County, Highway E is closed between
County Road 322 and Levee Road (County Road 354) at Bois Brule
Creek.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/19 05/20 05/21 05/22 05/23
Mississippi River
Chester 27.0 28.61 30.8 31.9 32.4 31.5 28.7
&&
LAT...LON 3826 9043 3826 9030 3769 8935 3769 8959
3787 9003
$$049
WGUS83 KLSX 190250
FLSLSX
Flood Statement
National Weather Service St Louis MO
950 PM CDT Mon May 18 2020
...The flood warning continues for the following rivers in
Illinois...Missouri...
Mississippi River at...
Mel Price LD
Chester
Grafton
River forecasts are based on observed precipitation and forecast
precipitation for the next 24 hours.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 or forecasts change.
Safety message: Never drive cars, trucks, or sport utility vehicles
through flooded areas. The water may be too deep to allow for safe
passage.
This product, along with additional weather and stream information,
is available at http://water.weather.gov/ahps2/index.php?wfo=lsx.
&&
ILC083-MOC183-200249-
/O.CON.KLSX.FL.W.0115.000000T0000Z-000000T0000Z/
/GRFI2.1.ER.200517T1007Z.200519T1200Z.000000T0000Z.NO/
950 PM CDT Mon May 18 2020
The Flood Warning continues for
the Mississippi River at Grafton
* until further notice.
* At 9:30 PM Monday the stage was 20.8 feet.
* Flood stage is 18.0 feet.
* Minor flooding is forecast.
* The river is forecast to crest near 21.0 feet by tomorrow morning.
* Impact: At 21.0 feet...Water begins flooding the floor at the
Palisades Marina in Portage Des Sioux. Access to homes along North
Shore Drive in eastern St. Charles County becomes cut off near this
height.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/19 05/20 05/21 05/22 05/23
Mississippi River
Grafton 18.0 20.76 21.0 20.8 19.8 19.1 18.8
&&
LAT...LON 3881 9057 3888 9057 3899 9046 3895 9028
3882 9048
$$
ILC119-MOC183-200249-
/O.EXT.KLSX.FL.W.0117.000000T0000Z-200522T2200Z/
/ALNI2.1.ER.200518T0630Z.200519T1800Z.200521T1600Z.NO/
950 PM CDT Mon May 18 2020
The Flood Warning continues for
the Mississippi River at Mel Price LD
* until Friday afternoon.
* At 9:30 PM Monday the stage was 22.1 feet.
* Flood stage is 21.0 feet.
* Minor flooding is forecast.
* The river is forecast to crest near 22.6 feet by tomorrow early
afternoon, then fall below flood stage late Thursday morning.
* Impact: At 21.0 feet...Flood Stage. Minor flooding begins to occur
at this level.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/19 05/20 05/21 05/22 05/23
Mississippi River
Mel Price LD 21.0 22.07 22.5 22.4 21.2 20.0 19.1
&&
LAT...LON 3891 9033 3895 9028 3883 9003 3881 9017
3886 9017
$$
ILC077-157-MOC157-186-200249-
/O.EXT.KLSX.FL.W.0118.000000T0000Z-200525T0712Z/
/CHSI2.1.ER.200518T0633Z.200521T0000Z.200524T0112Z.NO/
950 PM CDT Mon May 18 2020
The Flood Warning continues for
the Mississippi River at Chester
* until Monday May 25.
* At 9:30 PM Monday the stage was 29.3 feet.
* Flood stage is 27.0 feet.
* Minor flooding is forecast.
* The river is forecast to crest near 31.9 feet by Wednesday evening,
then fall below flood stage Saturday evening.
* Impact: At 31.5 feet...In Perry County, Highway E is closed between
County Road 322 and Levee Road (County Road 354) at Bois Brule
Creek.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/19 05/20 05/21 05/22 05/23
Mississippi River
Chester 27.0 29.29 30.5 31.7 31.9 30.8 28.2
&&
LAT...LON 3826 9043 3826 9030 3769 8935 3769 8959
3787 9003
$$
maples992
WGUS83 KLSX 191652
FLSLSX
Flood Statement
National Weather Service St Louis MO
1152 AM CDT Tue May 19 2020
...The flood warning continues for the following river in
Illinois...Missouri...
Mississippi River at Mel Price LD
Mississippi River at Chester
...The flood warning continues for the following rivers in
Illinois...Missouri..
Mississippi River at Grafton
River forecasts are based on observed precipitation and forecast
precipitation for the next 24 hours.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Rainfall heavier than forecast could cause river levels to rise even
higher than predicted. The National Weather Service will monitor
this developing situation and issue follow up statements as
conditions or forecasts change.
Safety message: Never drive cars, trucks, or sport utility vehicles
through flooded areas. The water may be too deep to allow for safe
passage.
This product, along with additional weather and stream information,
is available at http://water.weather.gov/ahps2/index.php?wfo=lsx.
&&
ILC083-MOC183-202251-
/O.CON.KLSX.FL.W.0115.000000T0000Z-000000T0000Z/
/GRFI2.1.ER.200517T1007Z.200519T1000Z.000000T0000Z.NO/
1152 AM CDT Tue May 19 2020
The Flood Warning continues for
the Mississippi River at Grafton
* until further notice.
* At 11:30 AM Tuesday the stage was 20.8 feet.
* Flood stage is 18.0 feet.
* Minor flooding is forecast.
* The river is cresting now and is forecast to fall to around 20.5
feet Wednesday morning.
* Impact: At 18.0 feet...Flood Stage. Right bank begins to
overflow...flooding farmland.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/20 05/21 05/22 05/23 05/24
Mississippi River
Grafton 18.0 20.78 20.5 19.4 18.8 18.5 18.4
&&
LAT...LON 3881 9057 3888 9057 3899 9046 3895 9028
3882 9048
$$
ILC119-MOC183-202251-
/O.EXT.KLSX.FL.W.0117.000000T0000Z-200522T1600Z/
/ALNI2.1.ER.200518T0630Z.200519T1430Z.200521T1000Z.NO/
1152 AM CDT Tue May 19 2020
The Flood Warning continues for
the Mississippi River at Mel Price LD
* until Friday morning.
* At 11:30 AM Tuesday the stage was 22.1 feet.
* Flood stage is 21.0 feet.
* Minor flooding is forecast.
* The river is forecast to continue falling to below flood stage
Thursday morning.
* Impact: At 21.0 feet...Flood Stage. Minor flooding begins to occur
at this level.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/20 05/21 05/22 05/23 05/24
Mississippi River
Mel Price LD 21.0 22.15 21.9 20.9 19.9 19.2 18.7
&&
LAT...LON 3891 9033 3895 9028 3883 9003 3881 9017
3886 9017
$$
ILC077-157-MOC157-186-202251-
/O.EXT.KLSX.FL.W.0118.000000T0000Z-200525T1648Z/
/CHSI2.1.ER.200518T0633Z.200521T0600Z.200524T1048Z.NO/
1152 AM CDT Tue May 19 2020
The Flood Warning continues for
the Mississippi River at Chester
* until Monday morning.
* At 11:30 AM Tuesday the stage was 30.1 feet.
* Flood stage is 27.0 feet.
* Minor flooding is forecast.
* The river is forecast to crest near 31.7 feet Thursday morning, then
fall below flood stage Sunday morning.
* Impact: At 31.5 feet...In Perry County, Highway E is closed between
County Road 322 and Levee Road (County Road 354) at Bois Brule
Creek.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/20 05/21 05/22 05/23 05/24
Mississippi River
Chester 27.0 30.12 31.2 31.7 30.7 28.8 26.9
&&
LAT...LON 3826 9043 3826 9030 3769 8935 3769 8959
3787 9003
$$184
WGUS83 KLSX 200207
FLSLSX
Flood Statement
National Weather Service St Louis MO
907 PM CDT Tue May 19 2020
...The flood warning continues for the following rivers in
Illinois...Missouri...
Mississippi River at...
Chester
Grafton
Mel Price LD
River forecasts are based on observed precipitation and forecast
precipitation for the next 24 hours.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 or forecasts change.
Safety message: Never drive cars, trucks, or sport utility vehicles
through flooded areas. The water may be too deep to allow for safe
passage.
This product, along with additional weather and stream information,
is available at http://water.weather.gov/ahps2/index.php?wfo=lsx.
&&
ILC083-MOC183-210207-
/O.CON.KLSX.FL.W.0115.000000T0000Z-000000T0000Z/
/GRFI2.1.ER.200517T1007Z.200519T1000Z.000000T0000Z.NO/
907 PM CDT Tue May 19 2020
The Flood Warning continues for
the Mississippi River at Grafton
* until further notice.
* At 8:30 PM Tuesday the stage was 20.8 feet.
* Flood stage is 18.0 feet.
* Minor flooding is forecast.
* The river is forecast to continue falling to a stage of 19.6 feet
by Thursday morning.
* Impact: At 18.0 feet...Flood Stage. Right bank begins to
overflow...flooding farmland.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/20 05/21 05/22 05/23 05/24
Mississippi River
Grafton 18.0 20.75 20.5 19.6 19.0 18.6 18.8
&&
LAT...LON 3881 9057 3888 9057 3899 9046 3895 9028
3882 9048
$$
ILC119-MOC183-210207-
/O.CON.KLSX.FL.W.0117.000000T0000Z-200522T1600Z/
/ALNI2.1.ER.200518T0630Z.200519T1430Z.200521T1000Z.NO/
907 PM CDT Tue May 19 2020
The Flood Warning continues for
the Mississippi River at Mel Price LD
* until Friday morning.
* At 8:30 PM Tuesday the stage was 22.1 feet.
* Flood stage is 21.0 feet.
* Minor flooding is forecast.
* The river is forecast to continue falling to below flood stage by
Thursday morning.
* Impact: At 21.0 feet...Flood Stage. Minor flooding begins to occur
at this level.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/20 05/21 05/22 05/23 05/24
Mississippi River
Mel Price LD 21.0 22.07 21.9 20.9 20.1 19.4 19.0
&&
LAT...LON 3891 9033 3895 9028 3883 9003 3881 9017
3886 9017
$$
ILC077-157-MOC157-186-210207-
/O.EXT.KLSX.FL.W.0118.000000T0000Z-200525T1500Z/
/CHSI2.1.ER.200518T0633Z.200521T0600Z.200524T0900Z.NO/
907 PM CDT Tue May 19 2020
The Flood Warning continues for
the Mississippi River at Chester
* until Monday morning.
* At 9:00 PM Tuesday the stage was 30.6 feet.
* Flood stage is 27.0 feet.
* Minor flooding is forecast.
* The river is forecast to crest near 31.2 feet by early Thursday
morning, then fall below flood stage Sunday morning.
* Impact: At 31.5 feet...In Perry County, Highway E is closed between
County Road 322 and Levee Road (County Road 354) at Bois Brule
Creek.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/20 05/21 05/22 05/23 05/24
Mississippi River
Chester 27.0 30.58 30.8 31.2 30.4 28.5 26.8
&&
LAT...LON 3826 9043 3826 9030 3769 8935 3769 8959
3787 9003
$$438
WGUS83 KLSX 201531
FLSLSX
Flood Statement
National Weather Service St Louis MO
1031 AM CDT Wed May 20 2020
...The flood warning continues for the following river in
Illinois...Missouri...
Mississippi River at Mel Price LD
Mississippi River at Chester
...The flood warning continues for the following rivers in
Illinois...Missouri..
Mississippi River at Grafton
River forecasts are based on observed precipitation and forecast
precipitation for the next 24 hours.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Rainfall heavier than forecast could cause river levels to rise even
higher than predicted. The National Weather Service will monitor
this developing situation and issue follow up statements as
conditions or forecasts change.
Safety message: Never drive cars, trucks, or sport utility vehicles
through flooded areas. The water may be too deep to allow for safe
passage.
This product, along with additional weather and stream information,
is available at http://water.weather.gov/ahps2/index.php?wfo=lsx.
&&
ILC083-MOC183-212130-
/O.CON.KLSX.FL.W.0115.000000T0000Z-000000T0000Z/
/GRFI2.1.ER.200517T1007Z.200519T1000Z.000000T0000Z.NO/
1031 AM CDT Wed May 20 2020
The Flood Warning continues for
the Mississippi River at Grafton
* until further notice.
* At 10:00 AM Wednesday the stage was 20.6 feet.
* Flood stage is 18.0 feet.
* Minor flooding is forecast.
* The river is forecast to continue falling to a stage of 19.9 feet
by tomorrow morning.
* Impact: At 18.0 feet...Flood Stage. Right bank begins to
overflow...flooding farmland.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/21 05/22 05/23 05/24 05/25
Mississippi River
Grafton 18.0 20.60 19.9 19.4 19.2 19.3 19.3
&&
LAT...LON 3881 9057 3888 9057 3899 9046 3895 9028
3882 9048
$$
ILC119-MOC183-212130-
/O.EXT.KLSX.FL.W.0117.000000T0000Z-200522T1800Z/
/ALNI2.1.ER.200518T0630Z.200519T1430Z.200521T1200Z.NO/
1031 AM CDT Wed May 20 2020
The Flood Warning continues for
the Mississippi River at Mel Price LD
* until Friday afternoon.
* At 10:00 AM Wednesday the stage was 21.8 feet.
* Flood stage is 21.0 feet.
* Minor flooding is forecast.
* The river is forecast to continue falling to below flood stage
tomorrow morning.
* Impact: At 21.0 feet...Flood Stage. Minor flooding begins to occur
at this level.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/21 05/22 05/23 05/24 05/25
Mississippi River
Mel Price LD 21.0 21.76 21.0 20.2 19.6 19.4 19.1
&&
LAT...LON 3891 9033 3895 9028 3883 9003 3881 9017
3886 9017
$$
ILC077-157-MOC157-186-212130-
/O.EXT.KLSX.FL.W.0118.000000T0000Z-200526T0000Z/
/CHSI2.1.ER.200518T0633Z.200521T0600Z.200524T1800Z.NO/
1031 AM CDT Wed May 20 2020
The Flood Warning continues for
the Mississippi River at Chester
* until Monday evening.
* At 10:00 AM Wednesday the stage was 30.9 feet.
* Flood stage is 27.0 feet.
* Minor flooding is forecast.
* The river is forecast to crest near 31.2 feet late tonight, then fall
below flood stage Sunday afternoon.
* Impact: At 28.0 feet...Unleveed islands near Chester and the prison
farm floods.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/21 05/22 05/23 05/24 05/25
Mississippi River
Chester 27.0 30.91 31.2 30.4 28.6 27.3 26.3
&&
LAT...LON 3826 9043 3826 9030 3769 8935 3769 8959
3787 9003
$$669
WGUS83 KLSX 210130
FLSLSX
Flood Statement
National Weather Service St Louis MO
829 PM CDT Wed May 20 2020
...The flood warning continues for the following rivers in
Illinois...Missouri...
Mississippi River at Mel Price LD
Mississippi River at Chester
...The flood warning continues for the following rivers in
Illinois...Missouri..
Mississippi River at Grafton
River forecasts are based on observed precipitation and forecast
precipitation for the next 24 hours.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 or forecasts change.
Safety message: Never drive cars, trucks, or sport utility vehicles
through flooded areas. The water may be too deep to allow for safe
passage.
This product, along with additional weather and stream information,
is available at http://water.weather.gov/ahps2/index.php?wfo=lsx.
&&
ILC083-MOC183-220129-
/O.CON.KLSX.FL.W.0115.000000T0000Z-000000T0000Z/
/GRFI2.1.ER.200517T1007Z.200519T1000Z.000000T0000Z.NO/
829 PM CDT Wed May 20 2020
The Flood Warning continues for
the Mississippi River at Grafton
* until further notice.
* At 8:00 PM Wednesday the stage was 20.4 feet.
* Flood stage is 18.0 feet.
* Minor flooding is forecast.
* The river is forecast to continue falling to a stage of 19.5 feet
by Friday morning.
* Impact: At 18.0 feet...Flood Stage. Right bank begins to
overflow...flooding farmland.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/21 05/22 05/23 05/24 05/25
Mississippi River
Grafton 18.0 20.43 20.1 19.5 19.3 19.4 19.4
&&
LAT...LON 3881 9057 3888 9057 3899 9046 3895 9028
3882 9048
$$
ILC119-MOC183-220129-
/O.EXT.KLSX.FL.W.0117.000000T0000Z-200522T2000Z/
/ALNI2.1.ER.200518T0630Z.200519T1430Z.200521T1400Z.NO/
829 PM CDT Wed May 20 2020
The Flood Warning continues for
the Mississippi River at Mel Price LD
* until Friday afternoon.
* At 8:00 PM Wednesday the stage was 21.5 feet.
* Flood stage is 21.0 feet.
* Minor flooding is forecast.
* The river is forecast to continue falling to below flood stage by
tomorrow late morning.
* Impact: At 21.0 feet...Flood Stage. Minor flooding begins to occur
at this level.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/21 05/22 05/23 05/24 05/25
Mississippi River
Mel Price LD 21.0 21.52 21.1 20.3 19.7 19.3 19.1
&&
LAT...LON 3891 9033 3895 9028 3883 9003 3881 9017
3886 9017
$$
ILC077-157-MOC157-186-220129-
/O.EXT.KLSX.FL.W.0118.000000T0000Z-200526T0400Z/
/CHSI2.1.ER.200518T0633Z.200520T2200Z.200524T2200Z.NO/
829 PM CDT Wed May 20 2020
The Flood Warning continues for
the Mississippi River at Chester
* until Monday evening.
* At 8:00 PM Wednesday the stage was 30.9 feet.
* Flood stage is 27.0 feet.
* Minor flooding is forecast.
* The river is forecast to continue falling to below flood stage by
Sunday afternoon.
* Impact: At 28.0 feet...Unleveed islands near Chester and the prison
farm floods.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/21 05/22 05/23 05/24 05/25
Mississippi River
Chester 27.0 30.86 30.8 30.1 28.8 27.5 26.3
&&
LAT...LON 3826 9043 3826 9030 3769 8935 3769 8959
3787 9003
$$398
WGUS83 KLSX 211555
FLSLSX
Flood Statement
National Weather Service St Louis MO
1054 AM CDT Thu May 21 2020
...The flood warning continues for the Mississippi River
at the following locations...
Mississippi River at Mel Price LD
Mississippi River at Chester
Mississippi River at Grafton
River forecasts are based on observed precipitation and forecast
precipitation for the next 24 hours.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Rainfall heavier than forecast could cause river levels to rise even
higher than predicted. The National Weather Service will monitor
this developing situation and issue follow up statements as
conditions or forecasts change.
Safety message: Never drive cars, trucks, or sport utility vehicles
through flooded areas. The water may be too deep to allow for safe
passage.
This product, along with additional weather and stream information,
is available at http://water.weather.gov/ahps2/index.php?wfo=lsx.
&&
ILC083-MOC183-222154-
/O.CON.KLSX.FL.W.0115.000000T0000Z-000000T0000Z/
/GRFI2.1.ER.200517T1007Z.200519T1000Z.000000T0000Z.NO/
1054 AM CDT Thu May 21 2020
The Flood Warning continues for
the Mississippi River at Grafton
* until further notice.
* At 10:30 AM Thursday the stage was 20.2 feet.
* Flood stage is 18.0 feet.
* Minor flooding is forecast.
* The river is forecast to continue falling to a stage of 19.8 feet
by tomorrow morning.
* Impact: At 18.0 feet...Flood Stage. Right bank begins to
overflow...flooding farmland.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/22 05/23 05/24 05/25 05/26
Mississippi River
Grafton 18.0 20.17 19.8 19.6 19.6 19.5 19.6
&&
LAT...LON 3881 9057 3888 9057 3899 9046 3895 9028
3882 9048
$$
ILC119-MOC183-222154-
/O.EXT.KLSX.FL.W.0117.000000T0000Z-200523T0300Z/
/ALNI2.1.ER.200518T0630Z.200519T1430Z.200521T2100Z.NO/
1054 AM CDT Thu May 21 2020
The Flood Warning continues for
the Mississippi River at Mel Price LD
* until Friday evening.
* At 10:30 AM Thursday the stage was 21.2 feet.
* Flood stage is 21.0 feet.
* Minor flooding is forecast.
* The river is forecast to continue falling to below flood stage by
late this afternoon.
* Impact: At 21.0 feet...Flood Stage. Minor flooding begins to occur
at this level.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/22 05/23 05/24 05/25 05/26
Mississippi River
Mel Price LD 21.0 21.18 20.6 20.1 19.6 19.1 18.9
&&
LAT...LON 3891 9033 3895 9028 3883 9003 3881 9017
3886 9017
$$
ILC077-157-MOC157-186-222154-
/O.EXT.KLSX.FL.W.0118.000000T0000Z-200526T0800Z/
/CHSI2.1.ER.200518T0633Z.200520T2200Z.200525T0200Z.NO/
1054 AM CDT Thu May 21 2020
The Flood Warning continues for
the Mississippi River at Chester
* until late Monday night.
* At 10:30 AM Thursday the stage was 30.7 feet.
* Flood stage is 27.0 feet.
* Minor flooding is forecast.
* The river is forecast to continue falling to below flood stage by
Sunday before midnight.
* Impact: At 28.0 feet...Unleveed islands near Chester and the prison
farm floods.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/22 05/23 05/24 05/25 05/26
Mississippi River
Chester 27.0 30.72 30.6 29.5 27.9 26.5 25.6
&&
LAT...LON 3826 9043 3826 9030 3769 8935 3769 8959
3787 9003
$$872
WGUS83 KLSX 220206
FLSLSX
Flood Statement
National Weather Service St Louis MO
906 PM CDT Thu May 21 2020
...The flood warning is cancelled for the following river in
Illinois...Missouri...
Mississippi River at Mel Price LD
River forecasts are based on observed precipitation and forecast
precipitation for the next 24 hours.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 or forecasts change.
Safety message: Never drive cars, trucks, or sport utility vehicles
through flooded areas. The water may be too deep to allow for safe
passage.
This product, along with additional weather and stream information,
is available at http://water.weather.gov/ahps2/index.php?wfo=lsx.
&&
ILC119-MOC183-220236-
/O.CAN.KLSX.FL.W.0117.000000T0000Z-200523T0300Z/
/ALNI2.1.ER.200518T0630Z.200519T1430Z.200522T0110Z.NO/
906 PM CDT Thu May 21 2020
The Flood Warning is cancelled for
the Mississippi River at Mel Price LD.
* At 8:30 PM Thursday the stage was 21.0 feet.
* Flood stage is 21.0 feet.
* The river fell below flood stage at 8:10 PM Thursday.
* The river is forecast to continue falling to 20.3 feet by Saturday
morning.
&&
Fld Latest 7 a.m. Forecast
LOCATION Stg Obs Stg 05/22 05/23 05/24 05/25 05/26
Mississippi River
Mel Price LD 21.0 20.98 20.8 20.3 19.8 19.4 19.2
&&
LAT...LON 3891 9033 3895 9028 3883 9003 3881 9017
3886 9017
$$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 May 16, 6:26 PM CDT, 2 hours 48 minutes earlier.
Area forecast discussion, May 16, 6:26 PM CDT, 2 hours 48 minutes before
Area Forecast Discussion...Updated Aviation National Weather Service Saint Louis MO 626 PM CDT Sat May 16 2020 .SHORT TERM... (Through Late Sunday Afternoon) Issued at 314 PM CDT Sat May 16 2020 Unsettled weather will continue through the weekend as an upper level trough passes through the central CONUS. Two features of note were analyzed within the broad upper trough this afternoon; a weak negatively tilted shortwave extending from the central Plains into Louisiana and a closed low moving ESE through the northern Plains. A surface low was analyzed in the vicinity of the Arklatex, with a warm front extending north and east into southern SE MO and southern IL. Several areas of showers and storms have developed in the mid- Mississippi Valley along the elevated portion of the front. The most vigorous convection is along and east of the Mississippi River, where limited clouds have allowed for MUCAPE to build to around 2,000 J/kg. Effective bulk shear in this area is rather limited, so individual updrafts have been fairly short-lived. Nonetheless, at least one storm has pushed up to near severe levels and I couldn't rule out another storm or two following suit. These storms have also been very efficient rainfall producers. With PWs in the upper quartile of seasonal climatology and a tendency for new updrafts to develop in the immediate wake of dying convection, we've had reports of 1-1.5" per hour beneath the heaviest cores, resulting in flash flooding in a few areas. Fortunately there does not appear to be any sort of anchoring feature to focus these storms over a particular area, so I think additional flash flooding will be rather isolated. As we move into the evening hours, storm coverage will wane with the instability. Meanwhile, the previously mentioned negatively- tilted wave will continue to the ENE, drawing the surface low and associated warm front north into the Mid-Mississippi Valley around midnight. The surface low will then deepen and push to our NE tomorrow morning as it interacts with the northern upper low, before eventually dragging a cold front through the area tomorrow afternoon. As larger scale forcing intensifies in the early morning hours, CAMs are in good agreement increasing precip coverage after roughly midnight. Scattered to widespread storms are then expected to continue until the cold front sweeps through the area during the day tomorrow. Instability is expected to build to around 1,000 J/kg ahead of the ahead of the front tomorrow, supporting yet another round of thunderstorms. Much like today, effective bulk shear looks fairly limited, with SREF guidance showing a less than 50 percent chance of us topping even 30 kts. Nonetheless this CAPE/shear parameter space coupled with the frontal forcing would support a limited severe threat in southern Illinois tomorrow afternoon. BSH .LONG TERM... (Monday through Next Saturday) Issued at 427 PM CDT Sat May 16 2020 Large scale omega block still on track to take hold at the beginning of the week while a closed low sits and spins over the eastern third of the CONUS. Surface ridging will develop beneath the block, kicking off an extended period of quiet weather in the mid-Mississippi Valley. Our proximity to the eastern CONUS low will keep things on the cloudy and cool side for the early portion of the week. The deep moisture associated with that low will wane as we move through the week, resulting in less overcast to broken stratus and more broken to scattered cu. This will allow temperatures to gradually build through the week. Some guidance is showing a chance for diurnal showers toward the end of the week, through the signal for this is quite weak, so have omitted it from the forecast at this point. BSH && .AVIATION... (For the 00z TAFs through 00z Sunday Evening) Issued at 611 PM CDT Sat May 16 2020 Showers and storms across the region will continue to decrease in intensity and coverage this evening before picking back up around 06z as low pressure moves through the region. I think we'll only see isolated to perhaps scattered thunder in the overnight hours, so have left thunder out of the TAFs until storms become more likely after sunrise. Scattered to widespread showers and storms will then persist until a cold front moves through the region in the afternoon, ushering the precip out of the area. Given questions around exact timing and coverage of tomorrow's storms, have just gone with VCTS and will update as details become more clear. Guidance in good agreement showing cigs quickly falling in the early morning hours as ample low level moisture moves into the region with the previously mentioned low. I'm not very confident on exactly how low cigs will drop, but at this point much of the guidance has all terminals dropping below 1,000 ft, so ended up going IFR at all terminals. BSH && .LSX WATCHES/WARNINGS/ADVISORIES... MO...None. IL...None. && WFO LSX
Hazardous weather outlook, May 16, 3:56 PM CDT, 5 hours 18 minutes before
Hazardous Weather Outlook National Weather Service Saint Louis MO 356 PM CDT Sat May 16 2020 ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027- 034>036-041-042-047>052-059>065-072>075-084-085-099-172100- Adams IL-Audrain MO-Bond IL-Boone MO-Brown IL-Calhoun IL-Callaway MO- Clinton IL-Cole MO-Crawford MO-Fayette IL-Franklin MO-Gasconade MO- Greene IL-Iron MO-Jefferson MO-Jersey IL-Knox MO-Lewis MO-Lincoln MO- Macoupin IL-Madison IL-Madison MO-Marion IL-Marion MO-Moniteau MO- Monroe IL-Monroe MO-Montgomery IL-Montgomery MO-Osage MO-Pike IL- Pike MO-Ralls MO-Randolph IL-Reynolds MO-Saint Charles MO- Saint Clair IL-Saint Francois MO-Saint Louis City MO-Saint Louis MO- Sainte Genevieve MO-Shelby MO-Warren MO-Washington IL-Washington MO- 356 PM CDT Sat May 16 2020 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 continue through early this evening along and east of the Mississippi River, where there is a marginal risk for large hail and damaging winds. Localized flash flooding is possible in areas that have already received heavy rainfall today. .DAYS TWO THROUGH SEVEN...Sunday through Friday. The chance for thunderstorms will continue on Sunday. Isolated strong to severe storms are possible for areas near and south and east of Saint Louis during Sunday afternoon. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed tonight. BSH
In the hours before
Local storm report, May 16, 4:42 PM CDT, 4 hours 32 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
442 PM CDT SAT MAY 16 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0425 PM FLOOD WILSONVILLE 39.07N 89.86W
05/16/2020 MACOUPIN IL TRAINED SPOTTER
WATER REPORTED COMING OUT OF FIELDS AND
FLOWING OVER ROUTE 138 BETWEEN ROUTE 4 AND
159.
&&
BRITTThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 16, 7:50 PM CDT | Areal Flood Advisory | LSX | Jefferson, Saint Louis | 3 hr |
| May 16, 8:32 PM CDT | River Flood Warning | LSX | Gasconade, Montgomery | 3 days |
| May 16, 8:58 PM CDT | Flash Flood Watch | LSX | Crawford, Franklin, Iron, Jefferson, Lincoln, Madison and 8 more | 21 hr |
| May 16, 9:14 PM CDT | River Flood Warning | LSX | Perry, Sainte Genevieve | 32 days |
| May 16, 9:19 PM CDT | River Flood Warning | LSX | Jefferson, Saint Louis | 7 days |
| May 17, 1:36 AM CDT | Areal Flood Advisory | LSX | Franklin, Lincoln, Saint Charles, Saint Louis, City of Saint Louis | 6 hr |
| May 17, 2:02 AM CDT | Flash Flood Warning | LSX | Saint Charles, Saint Louis | 5 hr |
| May 17, 4:39 AM CDT | Areal Flood Advisory | LSX | Sainte Genevieve, Saint Francois | 6 hr |
| May 17, 8:45 AM CDT | River Flood Warning | LSX | Pike | 51 hr |
| May 17, 9:51 AM CDT | River Flood Warning | LSX | Gasconade, Montgomery | 49 hr |
| May 17, 10:35 AM CDT | River Flood Warning | LSX | Crawford, Washington | 48 hr |
| May 17, 2:15 PM CDT | River Flood Warning | LSX | Reynolds | 29 hr |
| May 17, 3:32 AM CDT | Areal Flood Advisory | LSX | Calhoun, Greene, Jersey, Macoupin | 12 hr |
| May 17, 11:31 AM CDT | River Flood Warning | LSX | Brown | 33 hr |
| May 17, 12:26 PM CDT | River Flood Warning | LSX | Fayette | 4 days |
| May 17, 3:29 PM CDT | Areal Flood Advisory | LSX | Calhoun, Greene, Jersey, Macoupin | 6 hr |
Nearby
River Flood Warnings in Missouri, 2020River Flood Warnings in Illinois, 2020Every river flood warning in 2020
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.