Alert archive / South Dakota / River Flood Warnings in 2018

River Flood Warning 3, NWS Aberdeen, SD

April 20, 2018Codington County, South Dakota

NWS Aberdeen, SD issued this river flood warning at Apr 20, 2018, 6:34 AM CDT for Codington County, South Dakota. It was in force for 12 days.

The area

The outline as issued.

The facts

Issued
Apr 20, 2018, 6:34 AM CDT (11:34 UTC)
Expired
May 2, 2018, 3:17 AM CDT
In force
12 days
Issued by
NWS Aberdeen, SD
Area
Storm-based polygon
Flood severity
Minor

County Codington County, SD

The radar

The Aberdeen radar (KABR), 114 km from the middle of the area, began a volume at 11:31 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 Big Sioux River at Watertown Sioux Conifer Road (WBSS2). The gauge peaked at 9.81 ft at Apr 22, 2018, 4:00 PM CDT.

actionminormoderate789101104/2304/2404/2504/2604/2704/2804/2904/3005/0105/0205/03
Action stage
8 ft
Minor stage
9 ft
Moderate stage
10 ft
Major stage
12 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06479500, 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.

026 
WGUS43 KABR 201134
FLWABR
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Aberdeen SD
634 AM CDT Fri Apr 20 2018

...The National Weather Service in Aberdeen has issued a flood 
warning for the following rivers in South Dakota...

  Big Sioux River Near Watertown 

.The following river forecasts include forecast precipitation through
the next 24 hours. Any additional future precipitation could affect 
the forecasts. 
 
Recent snowmelt has led to the flooding conditions. 


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Safety message...Flood waters can be very dangerous. Never drive 
across a flooded road. Turn around don't drown!

Stay tuned for further updates by listening to NOAA weather radio...
or your favorite local media.

For additional information...check out our web site at 
www.weather.gov/abr...then left click on the rivers and lakes link.

The next scheduled statement will be issued Saturday morning.

&&

SDC029-211533-
/O.NEW.KABR.FL.W.0003.180420T1134Z-180421T1600Z/
/WBSS2.1.SM.180420T1015Z.180420T1800Z.180421T1000Z.NO/
634 AM CDT Fri Apr 20 2018

The National Weather Service in Aberdeen has issued a 

* Flood Warning for 
  The Big Sioux River Near Watertown.
* At  6:15 AM Friday the stage was 8.2 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Flood stage is 8.0 feet.
* Forecast...The river will continue rising to near 8.6 feet by this 
  afternoon. The river will fall below flood stage early tomorrow.
* At 10.5 feet...Sioux conifer road begins flooding.

&&



LAT...LON 4498 9713 4492 9712 4492 9717 4495 9718
 4497 9717                            

$$

SRF
13 follow-up statements
449 
WGUS83 KABR 201411
FLSABR
Flood Statement
National Weather Service Aberdeen SD
911 AM CDT Fri Apr 20 2018

...The flood warning continues for the following rivers in South 
Dakota...

  Big Sioux River Near Watertown

.The following river forecasts include forecast precipitation through
the next 24 hours. Any additional future precipitation could affect 
the forecasts. 
 
Snow and ice melt along the Big Sioux River has allowed the river 
level to rise above flood stage. Minor flooding is forecast to 
occur through early Saturday morning.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Safety message...Flood waters can be very dangerous. Never drive 
across a flooded road. Turn around don't drown!

Stay tuned for further updates by listening to NOAA weather radio...
or your favorite local media.

For additional information...check out our web site at 
www.weather.gov/abr...then left click on the rivers and lakes link.

The next scheduled statement will be issued Saturday morning.

&&

SDC029-211536-
/O.EXT.KABR.FL.W.0003.000000T0000Z-180421T1536Z/
/WBSS2.1.SM.180420T1015Z.180420T1800Z.180421T0936Z.NO/
911 AM CDT Fri Apr 20 2018

The Flood Warning continues for
  The Big Sioux River Near Watertown
* Until early tomorrow...
* At 8 AM Friday the stage was 8.6 feet...
* Minor flooding is occurring and Minor flooding is forecast...
* Flood stage is 8.0 feet...
* Forecast...The river rose above flood stage early this morning and 
  will continue rising to near 9.1 feet by this afternoon. The river 
  will fall below flood stage early Saturday.
* At 10.5 feet...Sioux conifer road begins flooding.

&&



LAT...LON 4498 9713 4492 9712 4492 9717 4495 9718
 4497 9717                            

$$
543 
WGUS43 KABR 211410
FLWABR
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Aberdeen SD
910 AM CDT Sat Apr 21 2018

  Big Sioux River Near Watertown 
  Big Sioux River Near Castlewood 

.The following river forecasts include forecast precipitation through
the next 24 hours. Any additional future precipitation could affect 
the forecasts. 
 
Recent snowmelt has led to the flooding.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Safety message...Flood waters can be very dangerous. Never drive 
across a flooded road. Turn around don't drown!

Stay tuned for further updates by listening to NOAA weather radio...
or your favorite local media.

For additional information...check out our web site at 
www.weather.gov/abr...then left click on the rivers and lakes link.

&&

SDC029-221810-
/O.EXT.KABR.FL.W.0003.000000T0000Z-180422T2125Z/
/WBSS2.1.SM.180420T1015Z.180421T1800Z.180422T1525Z.NO/
910 AM CDT Sat Apr 21 2018

The Flood Warning continues for 
 The Big Sioux River Near Watertown.
* At  8:15 AM Saturday the stage was 9.3 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Flood stage is 8.0 feet.
* Forecast...The river will continue rising to near 9.4 feet by this 
  afternoon. The river will fall below flood stage Sunday late 
  morning.
* At 10.5 feet...Sioux conifer road begins flooding.

&&



LAT...LON 4498 9713 4492 9712 4492 9717 4495 9718
 4497 9717                            

$$

SDC057-221810-
/O.EXT.KABR.FL.W.0002.000000T0000Z-180424T0600Z/
/CSWS2.1.SM.180420T0457Z.180422T0600Z.180424T0000Z.NO/
910 AM CDT Sat Apr 21 2018

The Flood Warning continues for 
 The Big Sioux River Near Castlewood.* At  8:45 AM Saturday the stage was 10.3 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Flood stage is 9.0 feet.
* Forecast...The river will continue rising to near 10.5 feet  
  after midnight. The river will fall below flood stage 
  Monday evening.
* At 11.0 feet...Significant amounts of pasture and other 
  agricultural lands will be flooded.

&&



LAT...LON 4480 9703 4454 9689 4454 9692 4461 9701
 4469 9706 4480 9709                  

$$
341 
WGUS43 KABR 211903
FLWABR
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Aberdeen SD
203 PM CDT Sat Apr 21 2018

...The National Weather Service in Aberdeen has issued a flood 
warning for the following rivers in South Dakota...

  Big Sioux River At Watertown - Broadway Avenue 
  Big Sioux River Near Castlewood 
  Big Sioux River Near Watertown 

.The following river forecasts include forecast precipitation through
the next 24 hours. Any additional future precipitation could affect 
the forecasts. 
 
Snowmelt runoff is continuing to promote rises on some area 
streams and rivers. 
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Safety message...Flood waters can be very dangerous. Never drive 
across a flooded road. Turn around don't drown!

Stay tuned for further updates by listening to NOAA weather radio...
or your favorite local media.

For additional information...check out our web site at 
www.weather.gov/abr...then left click on the rivers and lakes link.

&&

SDC029-222254-
/O.EXT.KABR.FL.W.0003.000000T0000Z-180422T2254Z/
/WBSS2.1.SM.180420T1015Z.180421T1745Z.180422T1654Z.NO/
203 PM CDT Sat Apr 21 2018

The Flood Warning continues for 
 The Big Sioux River Near Watertown.
* At  1:15 PM Saturday the stage was 9.5 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Flood stage is 8.0 feet.
* Forecast...The river will continue rising to near 9.5 feet by this 
  evening. The river will fall below flood stage late on Sunday.
* At 10.5 feet...Sioux conifer road begins flooding.

&&

LAT...LON 4498 9713 4492 9712 4492 9717 4495 9718
 4497 9717                            

$$

SDC029-221900-
/O.NEW.KABR.FL.W.0004.180421T2050Z-180422T1900Z/
/WBWS2.1.ER.180421T2050Z.180422T0600Z.180422T1300Z.NO/
203 PM CDT Sat Apr 21 2018

The National Weather Service in Aberdeen has issued a 

* Flood Warning for 
  The Big Sioux River At Watertown - Broadway Avenue.
* At  1:00 PM Saturday the stage was 10.9 feet.
* Minor flooding is forecast.
* Flood stage is 11.0 feet.
* Forecast...Rise above flood stage by late this afternoon and 
  continue to rise to near 11.2 feet after midnight. The river 
  should fall below flood stage on Sunday. 


&&

LAT...LON 4492 9712 4487 9706 4480 9703 4480 9709
 4492 9715                            

$$

SDC057-222302-
/O.CON.KABR.FL.W.0002.000000T0000Z-180424T0600Z/
/CSWS2.1.SM.180420T0457Z.180422T0600Z.180424T0000Z.NO/
203 PM CDT Sat Apr 21 2018

The Flood Warning continues for 
 The Big Sioux River Near Castlewood.
* At  1:45 PM Saturday the stage was 10.4 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Flood stage is 9.0 feet.
* Forecast...The river will continue rising to near 10.7 feet by 
  midnight. The river will fall below flood stage Monday evening.
* At 11.0 feet...Significant amounts of pasture and other 
  agricultural lands will be flooded.

&&

LAT...LON 4480 9703 4454 9689 4454 9692 4461 9701
 4469 9706 4480 9709                  

$$
414 
WGUS83 KABR 221428
FLSABR
Flood Statement
National Weather Service Aberdeen SD
928 AM CDT Sun Apr 22 2018

...The flood warning continues for the following rivers in South 
Dakota...

  James River Near Columbia
  
  Big Sioux River Near Watertown
  Big Sioux River At Watertown - Broadway Avenue
  Big Sioux River Near Castlewood

.The following river forecasts include forecast precipitation through
the next 24 hours. Any additional future precipitation could affect 
the forecasts. 
 
Snowmelt runoff continues to contribute to mostly minor flooding on 
area rivers and streams. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Safety message...Flood waters can be very dangerous. Never drive 
across a flooded road. Turn around don't drown!

Stay tuned for further updates by listening to NOAA weather radio...
or your favorite local media.

For additional information...check out our web site at 
www.weather.gov/abr...then left click on the rivers and lakes link.


&&

SDC013-231828-
/O.EXT.KABR.FL.W.0005.000000T0000Z-180426T1030Z/
/CMBS2.1.SM.180422T0500Z.180424T0000Z.180426T0430Z.NO/
928 AM CDT Sun Apr 22 2018

The Flood Warning continues for
  The James River Near Columbia
* Until Wednesday before midnight...
* At 08AM Sunday the stage was 13.4 feet...
* Minor flooding is occurring and Minor flooding is forecast...
* Flood stage is 13.0 feet...
* Forecast...The river rose above flood stage early this 
  morning and will continue rising to near 14.0 feet by Monday 
  evening. 
* At 15.0 feet...Significant amounts of agricultural lands are 
  flooded.

&&

LAT...LON 4594 9813 4563 9827 4552 9818 4552 9830
 4563 9837 4594 9820                  

$$

SDC029-231500-
/O.EXT.KABR.FL.W.0003.000000T0000Z-180423T1500Z/
/WBSS2.1.SM.180420T1015Z.180422T1800Z.180423T0900Z.NO/
928 AM CDT Sun Apr 22 2018

The Flood Warning continues for
  The Big Sioux River Near Watertown
* Until early Monday...
* At 08AM Sunday the stage was 9.5 feet...
* Minor flooding is occurring and Minor flooding is forecast...
* Flood stage is 8.0 feet...
* Forecast...The river rose above flood stage  and will continue 
  rising to near 9.7 feet by this afternoon. 
* At 10.5 feet...Sioux conifer road begins flooding.

&&

LAT...LON 4498 9713 4492 9712 4492 9717 4495 9718
 4497 9717                            

$$

SDC029-230600-
/O.EXT.KABR.FL.W.0004.000000T0000Z-180423T0600Z/
/WBWS2.1.ER.180422T0930Z.180422T1800Z.180423T0000Z.NO/
928 AM CDT Sun Apr 22 2018

The Flood Warning continues for
  The Big Sioux River At Watertown - Broadway Avenue
* Until this evening...
* At 09AM Sunday the stage was 11.1 feet...
* Minor flooding is occurring and Minor flooding is forecast...
* Flood stage is 11.0 feet...
* Forecast...The river rose above flood stage early this morning and 
  will continue rising to near 11.2 feet by this afternoon. The 
  river should fall below flood tonight.


&&

LAT...LON 4492 9712 4487 9706 4480 9703 4480 9709
 4492 9715                            

$$

SDC057-231828-
/O.EXT.KABR.FL.W.0002.000000T0000Z-180424T1630Z/
/CSWS2.1.SM.180420T0457Z.180422T1345Z.180424T1030Z.NO/
928 AM CDT Sun Apr 22 2018

The Flood Warning continues for
  The Big Sioux River Near Castlewood
* Until Tuesday morning...
* At 08AM Sunday the stage was 10.8 feet...
* Minor flooding is occurring and Minor flooding is forecast...
* Flood stage is 9.0 feet...
* At 11.0 feet...Significant amounts of pasture and other 
  agricultural lands will be flooded.

&&

LAT...LON 4480 9703 4454 9689 4454 9692 4461 9701
 4469 9706 4480 9709                  

$$
016 
WGUS43 KABR 231433
FLWABR
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Aberdeen SD
932 AM CDT Mon Apr 23 2018

...The National Weather Service in Aberdeen has issued a flood 
warning for the following river in South Dakota...

  Big Sioux River At Watertown - Broadway Avenue 
  Big Sioux River Near Watertown 
...Forecast Flooding Changed from Minor to Moderate Severity for the 
following rivers in South Dakota...
  Big Sioux River Near Castlewood 

.The following river forecasts include forecast precipitation through
the next 24 hours. Any additional future precipitation could affect 
the forecasts. 
 
Snowmelt runoff continues to contribute to mostly minor flooding on 
area rivers and streams. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Safety message...Flood waters can be very dangerous. Never drive 
across a flooded road. Turn around don't drown!

Stay tuned for further updates by listening to NOAA weather radio...
or your favorite local media.

For additional information...check out our web site at 
www.weather.gov/abr...then left click on the rivers and lakes link.

The next scheduled statement will be issued tomorrow morning.

&&

SDC029-241831-
/O.EXT.KABR.FL.W.0003.000000T0000Z-180425T2000Z/
/WBSS2.1.SM.180420T1015Z.180423T1800Z.180425T1400Z.NO/
932 AM CDT Mon Apr 23 2018

The Flood Warning continues for 
 The Big Sioux River Near Watertown.
* At  9:15 AM Monday the stage was 9.6 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Flood stage is 8.0 feet.
* Forecast...The river will continue rising to near 9.7 feet by this 
  afternoon. The river will fall below flood stage late Wednesday 
  morning.
* At 10.5 feet...Sioux conifer road begins flooding.

&&



LAT...LON 4498 9713 4492 9712 4492 9717 4495 9718
 4497 9717                            

$$

SDC029-241831-
/O.NEW.KABR.FL.W.0006.180423T1432Z-180425T0600Z/
/WBWS2.1.ER.000000T0000Z.180424T0000Z.180425T0000Z.NO/
932 AM CDT Mon Apr 23 2018

The National Weather Service in Aberdeen has issued a 

* Flood Warning for 
  The Big Sioux River At Watertown - Broadway Avenue.
* At  9:00 AM Monday the stage was 11.2 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Flood stage is 11.0 feet.
* Forecast...The river will continue rising to near 11.3 feet by this
  evening. The river will fall below flood stage tomorrow evening.


&&



LAT...LON 4492 9712 4487 9706 4480 9703 4480 9709
 4492 9715                            

$$

SDC057-241831-
/O.EXT.KABR.FL.W.0002.000000T0000Z-180427T1200Z/
/CSWS2.2.SM.180420T0457Z.180423T1800Z.180427T0600Z.NO/
932 AM CDT Mon Apr 23 2018

...Forecast flooding increased from Minor to Moderate severity...
The Flood Warning continues for 
 The Big Sioux River Near Castlewood.
* At  8:45 AM Monday the stage was 10.9 feet.
* Minor flooding is occurring and Moderate flooding is forecast.
* Flood stage is 9.0 feet.
* Forecast...The river will continue rising to near 11.0 feet by this
  afternoon. The river will fall below flood stage early Friday 
  morning.
* At 11.0 feet...Significant amounts of pasture and other 
  agricultural lands will be flooded.

&&



LAT...LON 4480 9703 4454 9689 4454 9692 4461 9701
 4469 9706 4480 9709                  

$$
685 
WGUS83 KABR 241407
FLSABR
Flood Statement
National Weather Service Aberdeen SD
907 AM CDT Tue Apr 24 2018

...The flood warning continues for the following rivers in South 
Dakota...

  James River Near Columbia
  Big Sioux River Near Watertown
  Big Sioux River Near Castlewood
  Big Sioux River At Watertown - Broadway Avenue

.The following river forecasts include forecast precipitation through
the next 24 hours. Any additional future precipitation could affect 
the forecasts. 
 
Snowmelt runoff continues to contribute to mostly minor flooding on 
area rivers and streams.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Safety message...Flood waters can be very dangerous. Never drive 
across a flooded road. Turn around don't drown!

Stay tuned for further updates by listening to NOAA weather radio...
or your favorite local media.

For additional information...check out our web site at 
www.weather.gov/abr...then left click on the rivers and lakes link.

The next scheduled statement will be issued Wednesday morning.

&&

SDC013-251806-
/O.EXT.KABR.FL.W.0005.000000T0000Z-180428T0600Z/
/CMBS2.1.SM.180422T0500Z.180424T1800Z.180428T0000Z.NO/
907 AM CDT Tue Apr 24 2018

The Flood Warning continues for
  The James River Near Columbia
* Until Friday evening...
* At 08AM Tuesday the stage was 15.2 feet...
* Minor flooding is occurring and Minor flooding is forecast...
* Flood stage is 13.0 feet...
* Forecast...The river rose above flood stage  and will continue 
  rising to near 15.2 feet by this afternoon. The river will fall 
  below flood stage Friday evening.
* At 15.0 feet...Significant amounts of agricultural lands are 
  flooded.

&&



LAT...LON 4594 9813 4563 9827 4552 9818 4552 9830
 4563 9837 4594 9820                  

$$

SDC029-251806-
/O.EXT.KABR.FL.W.0003.000000T0000Z-180426T0000Z/
/WBSS2.1.SM.180420T1015Z.180424T0245Z.180425T1800Z.NO/
907 AM CDT Tue Apr 24 2018

The Flood Warning continues for
  The Big Sioux River Near Watertown
* Until Wednesday early afternoon...
* At 08AM Tuesday the stage was 9.5 feet...
* Minor flooding is occurring and Minor flooding is forecast...
* Flood stage is 8.0 feet...
* At 10.5 feet...Sioux conifer road begins flooding.

&&



LAT...LON 4498 9713 4492 9712 4492 9717 4495 9718
 4497 9717                            

$$

SDC029-250600-
/O.CON.KABR.FL.W.0006.000000T0000Z-180425T0600Z/
/WBWS2.1.SM.000000T0000Z.180424T0230Z.180425T0000Z.NO/
907 AM CDT Tue Apr 24 2018

The Flood Warning continues for
  The Big Sioux River At Watertown - Broadway Avenue
* Until this evening...
* At 08AM Tuesday the stage was 11.2 feet...
* Minor flooding is occurring and Minor flooding is forecast...
* Flood stage is 11.0 feet...

&&



LAT...LON 4492 9712 4487 9706 4480 9703 4480 9709
 4492 9715                            

$$

SDC057-251806-
/O.EXT.KABR.FL.W.0002.000000T0000Z-180427T1800Z/
/CSWS2.1.SM.180420T0457Z.180424T1015Z.180427T1200Z.NO/
907 AM CDT Tue Apr 24 2018

The Flood Warning continues for
  The Big Sioux River Near Castlewood
* Until Friday morning...
* At 08AM Tuesday the stage was 10.9 feet...
* Minor flooding is occurring and Minor flooding is forecast...
* Flood stage is 9.0 feet...
* At 11.0 feet...Significant amounts of pasture and other 
  agricultural lands will be flooded.

&&



LAT...LON 4480 9703 4454 9689 4454 9692 4461 9701
 4469 9706 4480 9709                  

$$
981 
WGUS83 KABR 251625
FLSABR
Flood Statement
National Weather Service Aberdeen SD
1125 AM CDT Wed Apr 25 2018

...The flood warning continues for the following rivers in South 
Dakota...

  James River Near Columbia
  Big Sioux River Near Watertown
  Big Sioux River Near Castlewood

.The following river forecasts include forecast precipitation through
the next 24 hours. Any additional future precipitation could affect 
the forecasts. 
 
Snowmelt runoff continues to contribute to mostly minor flooding on 
area rivers and streams.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Safety message...Flood waters can be very dangerous. Never drive 
across a flooded road. Turn around don't drown!

Stay tuned for further updates by listening to NOAA weather radio...
or your favorite local media.

For additional information...check out our web site at 
www.weather.gov/abr...then left click on the rivers and lakes link.

The next scheduled statement will be issued tomorrow morning.

&&

SDC013-262024-
/O.EXT.KABR.FL.W.0005.000000T0000Z-180428T2100Z/
/CMBS2.1.SM.180422T0500Z.180425T0416Z.180428T1500Z.NO/
1125 AM CDT Wed Apr 25 2018

The Flood Warning continues for
  The James River Near Columbia
* Until late Saturday morning...
* At 10AM Wednesday the stage was 15.1 feet...
* Minor flooding is occurring and Minor flooding is forecast...
* Flood stage is 13.0 feet...
* At 15.0 feet...Significant amounts of agricultural lands are 
  flooded.

&&



LAT...LON 4594 9813 4563 9827 4552 9818 4552 9830
 4563 9837 4594 9820                  

$$

SDC029-262024-
/O.EXT.KABR.FL.W.0003.000000T0000Z-180429T0000Z/
/WBSS2.1.SM.180420T1015Z.180424T0245Z.180428T1800Z.NO/
1125 AM CDT Wed Apr 25 2018

The Flood Warning continues for
  The Big Sioux River Near Watertown
* Until Saturday early afternoon...
* At 11AM Wednesday the stage was 9.4 feet...
* Minor flooding is occurring and Minor flooding is forecast...
* Flood stage is 8.0 feet...
* At 10.5 feet...Sioux conifer road begins flooding.

&&



LAT...LON 4498 9713 4492 9712 4492 9717 4495 9718
 4497 9717                            

$$

SDC057-262024-
/O.EXT.KABR.FL.W.0002.000000T0000Z-000000T0000Z/
/CSWS2.1.SM.180420T0457Z.180424T1015Z.000000T0000Z.NO/
1125 AM CDT Wed Apr 25 2018

The Flood Warning continues for
  The Big Sioux River Near Castlewood
* Until further notice...
* At 10AM Wednesday the stage was 10.6 feet...
* Minor flooding is occurring and Minor flooding is forecast...
* Flood stage is 9.0 feet...
* At 11.0 feet...Significant amounts of pasture and other 
  agricultural lands will be flooded.

&&



LAT...LON 4480 9703 4464 9695 4460 9700 4469 9700
          4480 9709                   

$$
538 
WGUS83 KABR 261409
FLSABR
Flood Statement
National Weather Service Aberdeen SD
909 AM CDT Thu Apr 26 2018

...The flood warning continues for the following rivers in South 
Dakota...

  James River Near Columbia
  Big Sioux River Near Watertown
  Big Sioux River Near Castlewood

.The following river forecasts include forecast precipitation through
the next 24 hours. Any additional future precipitation could affect 
the forecasts. 
 
Snowmelt runoff continues to contribute to mostly minor flooding on 
area rivers and streams.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Safety message...Flood waters can be very dangerous. Never drive 
across a flooded road. Turn around don't drown!

Stay tuned for further updates by listening to NOAA weather radio...
or your favorite local media.

For additional information...check out our web site at 
www.weather.gov/abr...then left click on the rivers and lakes link.

The next scheduled statement will be issued tomorrow morning.

&&

SDC013-271808-
/O.EXT.KABR.FL.W.0005.000000T0000Z-180429T0000Z/
/CMBS2.1.SM.180422T0500Z.180425T0416Z.180428T1800Z.NO/
909 AM CDT Thu Apr 26 2018

The Flood Warning continues for
  The James River Near Columbia
* Until Saturday early afternoon...
* At 08AM Thursday the stage was 15.0 feet...
* Minor flooding is occurring and Minor flooding is forecast...
* Flood stage is 13.0 feet...
* At 15.0 feet...Significant amounts of agricultural lands are 
  flooded.

&&



LAT...LON 4594 9813 4563 9827 4552 9818 4552 9830
 4563 9837 4594 9820                  

$$

SDC029-271808-
/O.EXT.KABR.FL.W.0003.000000T0000Z-000000T0000Z/
/WBSS2.1.SM.180420T1015Z.180424T0245Z.000000T0000Z.NO/
909 AM CDT Thu Apr 26 2018

The Flood Warning continues for
  The Big Sioux River Near Watertown
* Until further notice...
* At 08AM Thursday the stage was 9.2 feet...
* Minor flooding is occurring and Minor flooding is forecast...
* Flood stage is 8.0 feet...
* At 10.5 feet...Sioux conifer road begins flooding.

&&



LAT...LON 4498 9713 4492 9712 4492 9717 4495 9718
 4497 9717                            

$$

SDC057-271808-
/O.CON.KABR.FL.W.0002.000000T0000Z-000000T0000Z/
/CSWS2.1.SM.180420T0457Z.180424T1015Z.000000T0000Z.NO/
909 AM CDT Thu Apr 26 2018

The Flood Warning continues for
  The Big Sioux River Near Castlewood
* Until further notice...
* At 08AM Thursday the stage was 10.4 feet...
* Minor flooding is occurring and Minor flooding is forecast...
* Flood stage is 9.0 feet...
* At 11.0 feet...Significant amounts of pasture and other 
  agricultural lands will be flooded.

&&



LAT...LON 4480 9703 4464 9695 4460 9700 4469 9700
          4480 9709                   

$$
638 
WGUS83 KABR 271537
FLSABR
Flood Statement
National Weather Service Aberdeen SD
1037 AM CDT Fri Apr 27 2018

...The flood warning continues for the following rivers in South 
Dakota...

  James River Near Columbia
  Big Sioux River Near Watertown
  Big Sioux River Near Castlewood

.The following river forecasts include forecast precipitation through
the next 24 hours. Any additional future precipitation could affect 
the forecasts. 
 
Snowmelt runoff continues to contribute to mostly minor flooding on 
area rivers and streams.

Also, the Big Sioux River near Estelline remains in flood stage.
At 9 AM CDT, the stage at Big Sioux River near Estelline was 1645.15
feet. Minor Flood Stage is 1644.0 feet. At 1644.0 feet, significant
flooding of crop and pasture land begins.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Safety message...Flood waters can be very dangerous. Never drive 
across a flooded road. Turn around don't drown!

Stay tuned for further updates by listening to NOAA weather radio...
or your favorite local media.

For additional information...check out our web site at 
www.weather.gov/abr...then left click on the rivers and lakes link.

The next scheduled statement will be issued tomorrow morning.

&&

SDC013-281937-
/O.EXT.KABR.FL.W.0005.000000T0000Z-180502T0600Z/
/CMBS2.1.SM.180422T0500Z.180425T0416Z.180502T0000Z.NO/
1037 AM CDT Fri Apr 27 2018

The Flood Warning continues for
  The James River Near Columbia
* Until Tuesday evening...
* At 09AM Friday the stage was 14.9 feet...
* Minor flooding is occurring and Minor flooding is forecast...
* Flood stage is 13.0 feet...
* At 15.0 feet...Significant amounts of agricultural lands are 
  flooded.

&&



LAT...LON 4594 9813 4563 9827 4552 9818 4552 9830
 4563 9837 4594 9820                  

$$

SDC029-281937-
/O.CON.KABR.FL.W.0003.000000T0000Z-000000T0000Z/
/WBSS2.1.SM.180420T1015Z.180424T0245Z.000000T0000Z.NO/
1037 AM CDT Fri Apr 27 2018

The Flood Warning continues for
  The Big Sioux River Near Watertown
* Until further notice...
* At 10AM Friday the stage was 8.9 feet...
* Minor flooding is occurring and Minor flooding is forecast...
* Flood stage is 8.0 feet...
* At 10.5 feet...Sioux conifer road begins flooding.

&&



LAT...LON 4498 9713 4492 9712 4492 9717 4495 9718
 4497 9717                            

$$

SDC057-281937-
/O.CON.KABR.FL.W.0002.000000T0000Z-000000T0000Z/
/CSWS2.1.SM.180420T0457Z.180424T1015Z.000000T0000Z.NO/
1037 AM CDT Fri Apr 27 2018

The Flood Warning continues for
  The Big Sioux River Near Castlewood
* Until further notice...
* At 09AM Friday the stage was 10.3 feet...
* Minor flooding is occurring and Minor flooding is forecast...
* Flood stage is 9.0 feet...
* At 11.0 feet...Significant amounts of pasture and other 
  agricultural lands will be flooded.

&&



LAT...LON 4480 9703 4464 9695 4460 9700 4469 9700
          4480 9709                   

$$
047 
WGUS83 KABR 281501
FLSABR
Flood Statement
National Weather Service Aberdeen SD
1001 AM CDT Sat Apr 28 2018

...The flood warning continues for the following rivers in South 
Dakota...

  James River Near Columbia
  Big Sioux River Near Watertown
  Big Sioux River Near Castlewood

.The following river forecasts include forecast precipitation through
the next 24 hours. Any additional future precipitation could affect 
the forecasts. 
 
Snowmelt runoff continues to contribute to minor flooding of some area
rivers and streams.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Safety message...Flood waters can be very dangerous. Never drive 
across a flooded road. Turn around don't drown!

Stay tuned for further updates by listening to NOAA weather radio...
or your favorite local media.

For additional information...check out our web site at 
www.weather.gov/abr...then left click on the rivers and lakes link.

The next scheduled statement will be issued Sunday morning.

&&

SDC013-291900-
/O.EXT.KABR.FL.W.0005.000000T0000Z-000000T0000Z/
/CMBS2.1.SM.180422T0500Z.180425T0416Z.000000T0000Z.NO/
1001 AM CDT Sat Apr 28 2018

The Flood Warning continues for
  The James River Near Columbia
* From Saturday morning until further notice...
* At 9 AM Saturday the stage was 14.7 feet...
* Minor flooding is occurring and Minor flooding is forecast...
* Flood stage is 13.0 feet...
* At 15.0 feet...Significant amounts of agricultural lands are 
  flooded.

&&



LAT...LON 4594 9813 4563 9827 4552 9818 4552 9830
 4563 9837 4594 9820                  

$$

SDC029-291900-
/O.EXT.KABR.FL.W.0003.000000T0000Z-180502T0000Z/
/WBSS2.1.SM.180420T1015Z.180424T0245Z.180501T1800Z.NO/
1001 AM CDT Sat Apr 28 2018

The Flood Warning continues for
  The Big Sioux River Near Watertown
* Until Tuesday early afternoon...
* At 9 AM Saturday the stage was 8.6 feet...
* Minor flooding is occurring and Minor flooding is forecast...
* Flood stage is 8.0 feet...
* At 10.5 feet...Sioux conifer road begins flooding.

&&



LAT...LON 4498 9713 4492 9712 4492 9717 4495 9718
 4497 9717                            

$$

SDC057-291900-
/O.CON.KABR.FL.W.0002.000000T0000Z-000000T0000Z/
/CSWS2.1.SM.180420T0457Z.180424T1015Z.000000T0000Z.NO/
1001 AM CDT Sat Apr 28 2018

The Flood Warning continues for
  The Big Sioux River Near Castlewood
* Until further notice...
* At 9 AM Saturday the stage was 10.1 feet...
* Minor flooding is occurring and Minor flooding is forecast...
* Flood stage is 9.0 feet...
* At 11.0 feet...Significant amounts of pasture and other 
  agricultural lands will be flooded.

&&



LAT...LON 4480 9703 4464 9695 4460 9700 4469 9700
          4480 9709                   

$$
555 
WGUS83 KABR 291520
FLSABR
Flood Statement
National Weather Service Aberdeen SD
1020 AM CDT Sun Apr 29 2018

...The flood warning continues for the following rivers in South 
Dakota...

  Big Sioux River Near Watertown
  Big Sioux River Near Castlewood
  James River Near Columbia

.The following river forecasts include forecast precipitation through
the next 24 hours. Any additional future precipitation could affect 
the forecasts. 
 
Snowmelt runoff continues to contribute to minor flooding of some area
rivers and streams.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Safety message...Flood waters can be very dangerous. Never drive 
across a flooded road. Turn around don't drown!

Stay tuned for further updates by listening to NOAA weather radio...
or your favorite local media.

For additional information...check out our web site at 
www.weather.gov/abr...then left click on the rivers and lakes link.

The next scheduled statement will be issued Monday morning.

&&

SDC013-301919-
/O.CON.KABR.FL.W.0005.000000T0000Z-000000T0000Z/
/CMBS2.1.SM.180422T0500Z.180425T0416Z.000000T0000Z.NO/
1020 AM CDT Sun Apr 29 2018

The Flood Warning continues for
  The James River Near Columbia
* From Saturday morning until further notice...
* At 9 AM Sunday the stage was 14.2 feet...
* Minor flooding is occurring and Minor flooding is forecast...
* Flood stage is 13.0 feet...
* Forecast...The river rose above flood stage  and will continue 
  rising to near 14.3 feet by Sunday morning. Additional rises may be
  possible thereafter.
* At 15.0 feet...Significant amounts of agricultural lands are 
  flooded.

&&



LAT...LON 4594 9813 4563 9827 4552 9818 4552 9830
 4563 9837 4594 9820                  

$$

SDC029-301919-
/O.EXT.KABR.FL.W.0003.000000T0000Z-180502T1200Z/
/WBSS2.1.SM.180420T1015Z.180424T0245Z.180502T0600Z.NO/
1020 AM CDT Sun Apr 29 2018

The Flood Warning continues for
  The Big Sioux River Near Watertown
* Until early Wednesday morning...
* At 9 AM Sunday the stage was 8.3 feet...
* Minor flooding is occurring and Minor flooding is forecast...
* Flood stage is 8.0 feet...

&&



LAT...LON 4498 9713 4492 9712 4492 9717 4495 9718
 4497 9717                            

$$

SDC057-301919-
/O.EXT.KABR.FL.W.0002.000000T0000Z-180504T0000Z/
/CSWS2.1.SM.180420T0457Z.180424T1015Z.180503T1800Z.NO/
1020 AM CDT Sun Apr 29 2018

The Flood Warning continues for
  The Big Sioux River Near Castlewood
* Until Thursday early afternoon...
* At 9 AM Sunday the stage was 9.9 feet...
* Minor flooding is occurring and Minor flooding is forecast...
* Flood stage is 9.0 feet...
* At 9.2 feet...The road on the southwest side of castlewood is 
  overtopped.

&&



LAT...LON 4480 9703 4464 9695 4460 9700 4469 9700
          4480 9709                   

$$
936 
WGUS83 KABR 301448
FLSABR
Flood Statement
National Weather Service Aberdeen SD
948 AM CDT Mon Apr 30 2018

...The flood warning continues for the following rivers in South 
Dakota...

  Big Sioux River Near Watertown
  Big Sioux River Near Castlewood
  James River Near Columbia

.The following river forecasts include forecast precipitation through
the next 24 hours. Any additional future precipitation could affect 
the forecasts. 
 
Snowmelt runoff continues to contribute to minor flooding of some areas
river and streams.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Safety message...Flood waters can be very dangerous. Never drive 
across a flooded road. Turn around don't drown!

Stay tuned for further updates by listening to NOAA weather radio...
or your favorite local media.

For additional information...check out our web site at 
www.weather.gov/abr...then left click on the rivers and lakes link.

The next scheduled statement will be issued Tuesday morning.

&&

SDC013-011847-
/O.CON.KABR.FL.W.0005.000000T0000Z-000000T0000Z/
/CMBS2.1.SM.180422T0500Z.180425T0416Z.000000T0000Z.NO/
948 AM CDT Mon Apr 30 2018

The Flood Warning continues for
  The James River Near Columbia
* From Sunday morning until further notice...
* At 9 AM Monday the stage was 13.9 feet...
* Minor flooding is occurring and Minor flooding is forecast...
* Flood stage is 13.0 feet...
* At 13.0 feet...Flooding of the lower lying agricultural areas 
  begins.

&&



LAT...LON 4594 9813 4563 9827 4552 9818 4552 9830
 4563 9837 4594 9820                  

$$

SDC029-011847-
/O.EXT.KABR.FL.W.0003.000000T0000Z-180502T1800Z/
/WBSS2.1.SM.180420T1015Z.180424T0245Z.180502T1200Z.NO/
948 AM CDT Mon Apr 30 2018

The Flood Warning continues for
  The Big Sioux River Near Watertown
* Until Wednesday morning...
* At 9 AM Monday the stage was 8.2 feet...
* Minor flooding is occurring and Minor flooding is forecast...
* Flood stage is 8.0 feet...

&&



LAT...LON 4498 9713 4492 9712 4492 9717 4495 9718
 4497 9717                            

$$

SDC057-011847-
/O.EXT.KABR.FL.W.0002.000000T0000Z-180504T0600Z/
/CSWS2.1.SM.180420T0457Z.180424T1015Z.180504T0000Z.NO/
948 AM CDT Mon Apr 30 2018

The Flood Warning continues for
  The Big Sioux River Near Castlewood
* Until Thursday evening...
* At 8 AM Monday the stage was 9.6 feet...
* Minor flooding is occurring and Minor flooding is forecast...
* Flood stage is 9.0 feet...
* At 9.2 feet...The road on the southwest side of castlewood is 
  overtopped.

&&



LAT...LON 4480 9703 4464 9695 4460 9700 4469 9700
          4480 9709                   

$$
100 
WGUS83 KABR 020817
FLSABR
Flood Statement
National Weather Service Aberdeen SD
317 AM CDT Wed May 2 2018

...The flood warning is cancelled for the following rivers in South 
Dakota...

  Big Sioux River Near Watertown

.The following river forecasts include forecast precipitation through
the next 24 hours. Any additional future precipitation could affect 
the forecasts. 
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Stay tuned for further updates by listening to NOAA weather radio...
or your favorite local media.

For additional information...check out our web site at 
www.weather.gov/abr...then left click on the rivers and lakes link.

&&

SDC029-020847-
/O.CAN.KABR.FL.W.0003.000000T0000Z-180502T1800Z/
/WBSS2.1.SM.180420T1015Z.180424T0245Z.000000T0000Z.NO/
317 AM CDT Wed May 2 2018

Forecast information for
  Big Sioux River Near Watertown
* At 02AM Wednesday the stage was 7.8 feet...
* No flooding is currently forecast...
* Flood stage is 8.0 feet...
* Forecast...The river will continue to fall

&&



LAT...LON 4498 9713 4492 9712 4492 9717 4495 9718
 4497 9717                            

$$

Connelly

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 Aberdeen, SD wrote its last area forecast discussion before this river flood warning went out at Apr 20, 6:27 AM CDT, 7 minutes earlier.

Area forecast discussion, Apr 20, 6:27 AM CDT, 7 minutes before
Area Forecast Discussion
National Weather Service Aberdeen SD
627 AM CDT Fri Apr 20 2018

.SHORT TERM...(Today and Tonight)
Issued at 317 AM CDT Fri Apr 20 2018

Not much change to the overall evolution of the system to our south
(for our area anyway). Already have increasing high clouds, but CAMS
suggest moisture may be somewhat delayed. Will also have to overcome
a decent sub-cloud dry layer evident in BUFKIT soundings and given
weak/elevated lift there may be some virga initially. Temperatures
today/tonight are progged to remain above freezing, with a freezing
level around 3-4kft so precipitation type is just rain.

.LONG TERM...(Saturday through Thursday)
Issued at 317 AM CDT Fri Apr 20 2018

Main feature of the long term forecast is the potent shortwave
moving through the area Monday night into Tuesday, leading to a
decent opportunity for rain over north central SD.

Before that system arrives, will have some lingering showers over
south central SD on the northern edge of the upper low currently
over the southwestern CONUS. This upper low will be moving east out
of Colorado on Saturday. Most of the forcing will be to the south of
the area and even with south-southeasterly flow, there are some
struggles in moistening the lower levels over the eastern half of
SD, thus concerns on if precipitation will occur. Will keep PoPs
confined to the far southwest part of the CWA (Jones/Lyman counties)
and closest to the better forcing. NAM indicating some fog potential
for Saturday morning (and again on Sunday), but since the NAM tends
to overdo the low level moisture and limited rain to aid in
moistening (along with weak low level winds), will keep out of the
forecast. Also for Saturday, expect gusty winds over the northwest
third of the CWA between the surface high ridge extending west from
the Great Lakes and a weak trough over eastern Montana. Mean
momentum transfer values are in the mid 20 kt range and felt that
was reasonable for Corson/Dewey county.

On Sunday, that weak trough from Montana will slowly try to slide
east and move into northwest SD and west/central ND. Models vary on
the eastward extend through Sunday night and in turn the associated
clouds. That will have a potential impact on temperatures, so have
followed a general consensus of models for now (around 60). This
clouds will also impact the wind gusts, with the eastern cwa having
the best opportunity for deeper mixing, but with weaker winds aloft,
expect gusts in the 15-20kt range.

On to the main system for Monday night into Tuesday. Still some
timing differences between CMC/ECMWF and the GFS on how quickly the
precipitation will move through, with the GFS being 6-12 hours
faster.  Even with those differences, models are consistent on
precipitation amounts, with around a half inch of liquid falling
over north central SD. Some hints of convection in the models
(pocket of steeper 700-500mb lapse rates over central-south central
SD), so could see some higher amounts if convection occurs (left
thunder out of the forecast for now with limited elevated CAPE). At
this time, it looks like the precipitation will largely be rain, but
there is a hint in the CMC that there may be some snow mixing in on
the backside. Finally, with the models highlighting a compact low,
there will likely be a 3-6hr period of gusty winds Monday night into
Tuesday morning (near advisory levels).

After the Tuesday system, have a couple of dry fronts pushing
through on Wednesday night and again towards next weekend.  This
trend may not lead to temperatures quite as warm as initially
expected for the end of next week, but it should still end up around
60 degrees.  At this point, there is limited moisture associated
with the fronts as they drop southeast from Canada, so will keep the
forecast dry.

&&

.AVIATION...(For the 12Z TAFS through 12Z Saturday Morning)
Issued at 624 AM CDT Fri Apr 20 2018

VFR conditions can generally be anticipated with a light southeast
breeze. Showers will move towards the KPIR terminal but will be
scattered in nature, though CIGS could fall sub MVFR in the
morning Saturday. Guidance does generate some fog Saturday morning
as well but am skeptical at this point with only scattered
coverage of showers and lingering cloud cover.

&&

.ABR WATCHES/WARNINGS/ADVISORIES...
SD...None.
MN...None.
&&

SHORT TERM...Connelly
LONG TERM...SRF
AVIATION...Connelly
Hazardous weather outlook, Apr 20, 3:09 AM CDT, 3 hours 25 minutes before
Hazardous Weather Outlook
National Weather Service Aberdeen SD
309 AM CDT Fri Apr 20 2018

MNZ039-046-SDZ003>011-015>019-033>037-045-048-051-210815-
Traverse-Big Stone-Corson-Campbell-McPherson-Brown-Marshall-
Roberts-Walworth-Edmunds-Day-Dewey-Potter-Faulk-Spink-Clark-
Stanley-Sully-Hughes-Hyde-Hand-Jones-Lyman-Buffalo-
309 AM CDT Fri Apr 20 2018 /209 AM MDT Fri Apr 20 2018/

This Hazardous Weather Outlook is for portions of west central
Minnesota, central South Dakota, north central South Dakota, and
northeast South Dakota.

.DAY ONE...Today and Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

SDZ020>023-210815-
Codington-Grant-Hamlin-Deuel-
309 AM CDT Fri Apr 20 2018

This Hazardous Weather Outlook is for portions of northeast South
Dakota.

.DAY ONE...Today and Tonight

Minor river and creek flooding is occurring due to the snowmelt.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

Connelly

The office that day

Everything else NWS Aberdeen, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 19, 8:57 PM CDTAreal Flood AdvisoryABRCodington13 hr
Apr 19, 10:46 PM CDTAreal Flood AdvisoryABRGrant15 hr
Apr 19, 11:07 PM CDTAreal Flood WarningABRCodington, Grant45 hr
Apr 20, 1:19 AM CDTRiver Flood WarningABRHamlin14 days

Nearby

River Flood Warnings in South Dakota, 2018Every river flood warning in 2018

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.