Alert archive / South Dakota / River Flood Warnings in 2018

River Flood Warning 39, NWS Sioux Falls, SD

April 13, 2018Brookings County, Moody County, South Dakota

NWS Sioux Falls, SD issued this river flood warning at Apr 13, 2018, 9:41 AM CDT for Brookings County, Moody County, South Dakota. It took effect at Apr 14, 2018, 1:00 AM CDT. It was in force for 60 hr.

The area

The outline as issued.

The facts

Issued
Apr 13, 2018, 9:41 AM CDT (14:41 UTC)
In effect from
Apr 14, 2018, 1:00 AM CDT
Expired
Apr 16, 2018, 1:00 PM CDT
In force
60 hr
Issued by
NWS Sioux Falls, SD
Area
Storm-based polygon
Flood severity
Minor

Counties Brookings County, SD, Moody County, SD

The radar

The Sioux Falls radar (KFSD), 72 km from the middle of the area, began a volume at 14:44 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The river

Written for the forecast point Big Sioux River near Brookings (BRKS2).

Action stage
8 ft
Minor stage
9 ft
Moderate stage
10.5 ft
Major stage
15 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06480000, 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.

320 
WGUS43 KFSD 131441
FLWFSD
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Sioux Falls SD
941 AM CDT Fri Apr 13 2018

...The National Weather Service in Sioux Falls has issued a flood 
warning for the following rivers in South Dakota and Iowa...

  Big Sioux River Near Bruce
  Big Sioux River Near Brookings
  Big Sioux River At Sioux Falls I-90
  Big Sioux River above Hawarden
  Big Sioux River At Akron
  Rock River At Rock Rapids
  Ocheyedan River Near Spencer
  Little Sioux River Above Spencer
  Little Sioux River At Spencer
  Little Sioux River At Linn Grove
 
.The following river forecasts include forecast precipitation through
tonight. Any additional future rains could affect the crest 
forecasts. 
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Safety message...Do not drive cars through flooded areas. the water 
depth and road condition may be unsafe.

Additional information is available at 
 
http://water.weather.gov/ahps2/index.php?wfo=fsd

Stay tuned for further updates by listening to NOAA weather radio...
or your local radio and TV stations.

The next scheduled statement will be issued tomorrow morning.

&&

SDC011-141840-
/O.NEW.KFSD.FL.W.0038.180413T1441Z-000000T0000Z/
/BRCS2.1.ER.180413T1255Z.180413T1345Z.000000T0000Z.NO/
941 AM CDT Fri Apr 13 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Big Sioux River Near Bruce.
* until further notice.
* At 08AM Friday the stage was 8.1 feet.
* Flood stage is 8.0 feet.
* At stages near 8.0 feet...The lower banks on the left side of the 
river overflow. 

&&
 
LAT...LON 4454 9696 4454 9687 4446 9686 4432 9685
          4432 9692 4443 9694

$$

SDC011-101-141840-
/O.NEW.KFSD.FL.W.0039.180415T0600Z-180416T1800Z/
/BRKS2.1.ER.180415T0600Z.180415T0600Z.180415T1800Z.NO/
941 AM CDT Fri Apr 13 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Big Sioux River Near Brookings.
* from late Saturday night to Monday afternoon.
* At 08AM Friday the stage was 8.3 feet.
* Minor flooding is forecast.
* Flood stage is 9.0 feet.
* Forecast...The river is expected to rise to near flood stage 1 AM 
  Sunday.
* At stages near 9.0 feet...Significant amounts of pasture and farm 
lands begin flooding on the left bank of the river. The road south of
the Brookings water treatment plant is flooded, as is 217th Street 
between 468th and 469th Avenues. 

&&
 
LAT...LON 4432 9692 4432 9685 4421 9675 4414 9661
          4410 9665 4420 9683

$$

SDC099-141840-
/O.NEW.KFSD.FL.W.0040.180414T1500Z-000000T0000Z/
/SFLS2.1.ER.180414T1500Z.180415T1800Z.000000T0000Z.NO/
941 AM CDT Fri Apr 13 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Big Sioux River At Sioux Falls I-90.
* from Saturday morning until further notice.
* At 09AM Friday the stage was 11.4 feet.
* Minor flooding is forecast.
* Flood stage is 12.0 feet.
* Forecast...Rise above flood stage by 10 AM Saturday and continue to
  rise to near 12.8 feet by 1 PM Sunday. Additional rises are 
  possible thereafter.
* At stages near 12.0 feet...Some agricultural land between 60th 
Street North and Interstate 90 begins to flood. 

&&
 
LAT...LON 4370 9679 4370 9672 4361 9674 4360 9674
          4360 9676 4366 9676

$$

IAC149-167-SDC127-141840-
/O.NEW.KFSD.FL.W.0041.180414T2200Z-000000T0000Z/
/HWDI4.1.ER.180414T2200Z.180417T0000Z.000000T0000Z.UU/
941 AM CDT Fri Apr 13 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Big Sioux River above Hawarden.
* from Saturday afternoon until further notice.
* At 08AM Friday the stage was 18.0 feet.
* Minor flooding is forecast.
* Flood stage is 20.5 feet.
* Forecast...Rise above flood stage by 5 PM Saturday and continue to 
  rise to near 23.0 feet by 7 PM Monday. Additional rises are 
  possible thereafter.
* At stages near 23.0 feet...South Dakota Highway 46 begins to flood.


&&
 
LAT...LON 4331 9663 4331 9651 4314 9641 4303 9647
          4303 9654 4312 9654

$$

IAC149-SDC127-141840-
/O.NEW.KFSD.FL.W.0042.180415T1500Z-000000T0000Z/
/AKRI4.2.ER.180415T1500Z.180418T0000Z.000000T0000Z.NO/
941 AM CDT Fri Apr 13 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Big Sioux River At Akron.
* from Sunday morning until further notice.
* At 09AM Friday the stage was 12.8 feet.
* Moderate flooding is forecast.
* Flood stage is 16.0 feet.
* Forecast...Rise above flood stage by 10 AM Sunday and continue to 
  rise to near 18.4 feet by 7 PM Tuesday. Additional rises are 
  possible thereafter.
* At stages near 19.5 feet...Several farm houses are flooded. 

&&
 
LAT...LON 4296 9657 4296 9645 4286 9652 4273 9648
          4273 9669 4277 9667

$$

IAC119-141840-
/O.NEW.KFSD.FL.W.0043.180414T1040Z-180416T2100Z/
/RAPI4.1.ER.180414T1040Z.180415T0000Z.180415T2100Z.NO/
941 AM CDT Fri Apr 13 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Rock River At Rock Rapids.
* from late tonight to Monday afternoon.
* At 09AM Friday the stage was 10.4 feet.
* Minor flooding is forecast.
* Flood stage is 13.0 feet.
* At stages near 13.0 feet...The lower banks on the left side of the 
river will begin flooding. 

&&
 
LAT...LON 4350 9625 4350 9614 4338 9611 4331 9618
          4334 9625 4341 9619

$$

IAC041-141840-
/O.NEW.KFSD.FL.W.0044.180415T0600Z-180417T0300Z/
/SPOI4.1.ER.180415T0600Z.180415T1200Z.180416T0300Z.NO/
941 AM CDT Fri Apr 13 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Ocheyedan River Near Spencer.
* from late Saturday night to Monday evening.
* At 08AM Friday the stage was 5.2 feet.
* Minor flooding is forecast.
* Flood stage is 8.0 feet.
* At stages near 8.0 feet...Minor flooding of pasture land begins. 

&&
 
LAT...LON 4318 9540 4318 9533 4315 9520 4313 9513
          4312 9524 4315 9540

$$

IAC041-059-141840-
/O.NEW.KFSD.FL.W.0045.180415T0600Z-180416T0600Z/
/LSSI4.1.ER.180415T0600Z.180415T1200Z.180416T0000Z.UU/
941 AM CDT Fri Apr 13 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Little Sioux River Above Spencer.
* from late Saturday night to late Sunday night.
* Flood stage is 10.0 feet.
* At stages near 10.0 feet...Minor flooding of agricultural lands 
begins. 

&&
 
LAT...LON 4329 9524 4328 9517 4324 9523 4315 9512
          4315 9518 4324 9529

$$

IAC041-141840-
/O.NEW.KFSD.FL.W.0046.180414T0600Z-000000T0000Z/
/SPWI4.1.ER.180414T0600Z.180415T1800Z.000000T0000Z.NO/
941 AM CDT Fri Apr 13 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Little Sioux River At Spencer.
* from late tonight until further notice.
* At 08AM Friday the stage was 9.4 feet.
* Minor flooding is forecast.
* Flood stage is 10.0 feet.
* Forecast...Rise above flood stage by 1 AM Saturday and continue to 
  rise to near 12.0 feet by 1 PM Sunday. Additional rises are 
  possible thereafter.

&&
 
LAT...LON 4315 9518 4315 9512 4315 9505 4299 9503
          4302 9510 4310 9510

$$

IAC021-041-141840-
/O.NEW.KFSD.FL.W.0047.180415T1800Z-000000T0000Z/
/LNNI4.1.ER.180415T1800Z.180417T1800Z.000000T0000Z.NO/
941 AM CDT Fri Apr 13 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Little Sioux River At Linn Grove.
* from Sunday afternoon until further notice.
* At 09AM Friday the stage was 17.3 feet.
* Minor flooding is forecast.
* Flood stage is 18.0 feet.
* Forecast...Rise above flood stage by 1 PM Sunday and continue to 
  rise to near 18.9 feet by 1 PM Tuesday. Additional rises are 
  possible thereafter.
* At stages near 18.5 feet...The city park in Sioux Rapids is 
flooded. 

&&
 
LAT...LON 4302 9510 4299 9503 4287 9512 4288 9536
          4296 9543 4293 9520

$$

&& 
Location  Flood   Latest  Observed   Maximum  Forecast  
          Stage   Stage   Time       Stage    Time      

BIG SIOUX RIVER
BRCS2      8.0     8.05   Fri 9 AM      M                
BRKS2      9.0     8.33   Fri 9 AM    9.0     Sun 1 AM    
SFLS2     12.0    11.40   Fri 9 AM   12.8     Sun 1 PM    
HWDI4     20.5    18.05   Fri 8 AM   23.0     Mon 7 PM    
AKRI4     16.0    12.80   Fri 9 AM   18.4     Tue 7 PM    

ROCK RIVER
RAPI4     13.0    10.36   Fri 9 AM   13.9     Sat 7 PM    

OCHEYEDAN RIVER
SPOI4      8.0     5.18   Fri 9 AM    8.2     Sun 7 AM    

LITTLE SIOUX RIVER
LSSI4     10.0        M              10.1     Sun 7 AM              
SPWI4     10.0     9.36   Fri 8 AM   12.0     Sun 1 PM    
LNNI4     18.0    17.33   Fri 9 AM   18.9     Tue 1 PM
3 follow-up statements
554 
WGUS83 KFSD 140209
FLSFSD
Flood Statement
National Weather Service Sioux Falls SD
909 PM CDT Fri Apr 13 2018

...The Flood Warning continues for the following rivers in South 
Dakota...Iowa...

  Big Sioux River Near Brookings
  Big Sioux River Near Bruce
  Big Sioux River At Sioux Falls I-90
  Big Sioux River above Hawarden
  Big Sioux River At Akron
  Rock River At Rock Rapids
  Ocheyedan River Near Spencer
  Little Sioux River Above Spencer
  Little Sioux River At Spencer
  Little Sioux River At Linn Grove
 
.The following river forecasts include forecast precipitation through
tonight. Any additional future rains could affect the crest 
forecasts. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Safety message...Do not drive cars through flooded areas. the water 
depth and road condition may be unsafe.

Additional information is available at 
 
http://water.weather.gov/ahps2/index.php?wfo=fsd

Stay tuned for further updates by listening to NOAA weather radio...
or your local radio and TV stations.

The next scheduled statement will be issued tomorrow morning.

&&

SDC011-150609-
/O.CON.KFSD.FL.W.0038.000000T0000Z-000000T0000Z/
/BRCS2.1.ER.180413T1255Z.180414T0045Z.000000T0000Z.NO/
909 PM CDT Fri Apr 13 2018

The Flood Warning continues for
  The Big Sioux River Near Bruce.
* until further notice.
* At 07PM Friday the stage was 8.2 feet.
* Flood stage is 8.0 feet.
* At stages near 8.0 feet...The lower banks on the left side of the 
  river overflow. 

&&
 
LAT...LON 4454 9696 4454 9687 4446 9686 4432 9685
          4432 9692 4443 9694

$$

SDC011-101-150609-
/O.EXT.KFSD.FL.W.0039.180414T0600Z-180417T0800Z/
/BRKS2.1.ER.180414T0600Z.180415T0600Z.180416T0800Z.NO/
909 PM CDT Fri Apr 13 2018

...Flood Warning extended until Tuesday April 17... 
The Flood Warning continues for
  The Big Sioux River Near Brookings.
* from late tonight to late Monday night.
* At 07PM Friday the stage was 8.8 feet.
* Minor flooding is forecast.
* Flood stage is 9.0 feet.
* Forecast...Rise above flood stage by Saturday April 14 and crest 
  near 9.5 feet by Sunday April 15. The river will fall below flood 
  stage by Monday April 16.
* At stages near 10.0 feet...Flooding begins to affect agricultural 
  lands along the right bank of the river. 

&&
 
LAT...LON 4432 9692 4432 9685 4421 9675 4414 9661
          4410 9665 4420 9683

$$

SDC099-150609-
/O.EXT.KFSD.FL.W.0040.180414T1400Z-000000T0000Z/
/SFLS2.1.ER.180414T1400Z.180415T1200Z.000000T0000Z.NO/
909 PM CDT Fri Apr 13 2018

The Flood Warning continues for
  The Big Sioux River At Sioux Falls I-90.
* from Saturday morning until further notice.
* At 08PM Friday the stage was 11.6 feet.
* Minor flooding is forecast.
* Flood stage is 12.0 feet.
* Forecast...Rise above flood stage by Saturday April 14 and crest 
  near 13.0 feet by Sunday April 15.
* At stages near 14.0 feet...Some farm buildings between Renner and 
  Sioux Falls are threatened by high water. 

&&
 
LAT...LON 4370 9679 4370 9672 4361 9674 4360 9674
          4360 9676 4366 9676

$$

IAC149-167-SDC127-150609-
/O.EXT.KFSD.FL.W.0041.180415T0200Z-000000T0000Z/
/HWDI4.1.ER.180415T0200Z.180417T0600Z.000000T0000Z.UU/
909 PM CDT Fri Apr 13 2018

The Flood Warning continues for
  The Big Sioux River above Hawarden.
* from Saturday evening until further notice.
* At 08PM Friday the stage was 18.6 feet.
* Minor flooding is forecast.
* Flood stage is 20.5 feet.
* Forecast...Rise above flood stage by Saturday April 14 and crest 
  near 23.0 feet by Tuesday April 17.
* At stages near 23.0 feet...South Dakota Highway 46 begins to flood.


&&
 
LAT...LON 4331 9663 4331 9651 4314 9641 4303 9647
          4303 9654 4312 9654

$$

IAC149-SDC127-150609-
/O.EXT.KFSD.FL.W.0042.180415T2000Z-000000T0000Z/
/AKRI4.2.ER.180415T2000Z.180418T0000Z.000000T0000Z.NO/
909 PM CDT Fri Apr 13 2018

The Flood Warning continues for
  The Big Sioux River At Akron.
* from Sunday afternoon until further notice.
* At 08PM Friday the stage was 13.3 feet.
* Moderate flooding is forecast.
* Flood stage is 16.0 feet.
* Forecast...Rise above flood stage by Sunday April 15 and crest near
  18.4 feet by Tuesday April 17.
* At stages near 19.5 feet...Several farm houses are flooded. 

&&
 
LAT...LON 4296 9657 4296 9645 4286 9652 4273 9648
          4273 9669 4277 9667

$$

IAC119-150609-
/O.EXT.KFSD.FL.W.0043.180414T1700Z-180416T0824Z/
/RAPI4.1.ER.180414T1700Z.180415T0000Z.180415T0824Z.NO/
909 PM CDT Fri Apr 13 2018

The Flood Warning continues for
  The Rock River At Rock Rapids.
* from Saturday afternoon to late Sunday night.
* At 08PM Friday the stage was 10.6 feet.
* Minor flooding is forecast.
* Flood stage is 13.0 feet.
* Forecast...Rise above flood stage by Saturday April 14 and crest 
  near 13.3 feet by Saturday April 14. The river will fall below flood
  stage by Sunday April 15.
* At stages near 13.0 feet...The lower banks on the left side of the 
  river will begin flooding. 

&&
 
LAT...LON 4350 9625 4350 9614 4338 9611 4331 9618
          4334 9625 4341 9619

$$

IAC041-150609-
/O.EXT.KFSD.FL.W.0044.180415T0600Z-180417T0200Z/
/SPOI4.1.ER.180415T0600Z.180415T1200Z.180416T0200Z.NO/
909 PM CDT Fri Apr 13 2018

The Flood Warning continues for
  The Ocheyedan River Near Spencer.
* from late Saturday night to Monday evening.
* At 07PM Friday the stage was 5.7 feet.
* Minor flooding is forecast.
* Flood stage is 8.0 feet.
* Forecast...Rise above flood stage by Sunday April 15 and crest near
  8.2 feet by Sunday April 15. The river will fall below flood stage 
  by Sunday April 15.
* At stages near 8.0 feet...Minor flooding of pasture land begins. 

&&
 
LAT...LON 4318 9540 4318 9533 4315 9520 4313 9513
          4312 9524 4315 9540

$$

IAC041-059-150609-
/O.CON.KFSD.FL.W.0045.180415T0600Z-180416T0600Z/
/LSSI4.1.ER.180415T0600Z.180415T1200Z.180416T0000Z.UU/
909 PM CDT Fri Apr 13 2018

The Flood Warning continues for
  The Little Sioux River Above Spencer.
* from late Saturday night to late Sunday night.
* Flood stage is 10.0 feet.
* At stages near 10.0 feet...Minor flooding of agricultural lands 
  begins. 

&&
 
LAT...LON 4329 9524 4328 9517 4324 9523 4315 9512
          4315 9518 4324 9529

$$

IAC041-150609-
/O.CON.KFSD.FL.W.0046.180414T0600Z-000000T0000Z/
/SPWI4.1.ER.180414T0600Z.180415T1800Z.000000T0000Z.NO/
909 PM CDT Fri Apr 13 2018

The Flood Warning continues for
  The Little Sioux River At Spencer.
* from late tonight until further notice.
* At 08PM Friday the stage was 9.8 feet.
* Minor flooding is forecast.
* Flood stage is 10.0 feet.
* Forecast...Rise above flood stage by Saturday April 14 and crest 
  near 12.0 feet by Sunday April 15.

&&
 
LAT...LON 4315 9518 4315 9512 4315 9505 4299 9503
          4302 9510 4310 9510

$$

IAC021-041-150609-
/O.CON.KFSD.FL.W.0047.180415T1800Z-000000T0000Z/
/LNNI4.1.ER.180415T1800Z.180417T1800Z.000000T0000Z.NO/
909 PM CDT Fri Apr 13 2018

The Flood Warning continues for
  The Little Sioux River At Linn Grove.
* from Sunday afternoon until further notice.
* At 08PM Friday the stage was 17.4 feet.
* Minor flooding is forecast.
* Flood stage is 18.0 feet.
* Forecast...Rise above flood stage by Sunday April 15 and crest near
  18.9 feet by Tuesday April 17.
* At stages near 18.5 feet...The city park in Sioux Rapids is 
  flooded. 

&&
 
LAT...LON 4302 9510 4299 9503 4287 9512 4288 9536
          4296 9543 4293 9520

$$

&& 
Location Flood  Latest Observed  Maximum Forecast  Recent Observed
         Stage  Stage  Time      Stage   Time      Crest  Time

BIG SIOUX RIVER
BRCS2    8.0    8.22 Fri 8 PM    
BRKS2    9.0    8.75 Fri 8 PM     9.5   Sun 1 AM    
SFLS2    12.0  11.57 Fri 8 PM    13.0   Sun 7 AM    
HWDI4    20.5  18.57 Fri 9 PM    23.0   Tue 1 AM    
AKRI4    16.0  13.31 Fri 8 PM    18.4   Tue 7 PM    

ROCK RIVER
RAPI4    13.0  10.65 Fri 8 PM    13.3   Sat 7 PM

OCHEYEDAN RIVER
SPOI4     8.0   5.67 Fri 8 PM     8.2   Sun 7 AM   

LITTLE SIOUX RIVER
LSSI4    10.0     
SPWI4    10.0   9.82 Fri 8 PM    12.0   Sun 1 PM
LNNI4    18.0  17.39 Fri 8 PM    18.9   Tue 1 PM
238 
WGUS83 KFSD 141536
FLSFSD
Flood Statement
National Weather Service Sioux Falls SD
1036 AM CDT Sat Apr 14 2018

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

  Rock River At Rock Rapids
  
  
...The Flood Warning continues for the following rivers in South 
Dakota...Iowa...
 
  Big Sioux River Near Bruce
  Big Sioux River Near Brookings
  Big Sioux River At Sioux Falls I-90
  Big Sioux River above Hawarden
  Big Sioux River At Akron
  Ocheyedan River Near Spencer
  Little Sioux River Near Milford
  Little Sioux River Above Spencer
  Little Sioux River At Spencer
  Little Sioux River At Linn Grove
  
 
.The following river forecasts include forecast precipitation through
tonight. Any additional future rains could affect the crest 
forecasts. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Safety message...Do not drive cars through flooded areas. the water 
depth and road condition may be unsafe.

Additional information is available at 
 
http://water.weather.gov/ahps2/index.php?wfo=fsd

Stay tuned for further updates by listening to NOAA weather radio...
or your local radio and TV stations.

The next scheduled statement will be issued tomorrow morning.

&&

SDC011-151936-
/O.CON.KFSD.FL.W.0038.000000T0000Z-000000T0000Z/
/BRCS2.1.ER.180413T1255Z.180414T1345Z.000000T0000Z.NO/
1036 AM CDT Sat Apr 14 2018

The Flood Warning continues for
  The Big Sioux River Near Bruce.
* until further notice.
* At 10AM Saturday the stage was 8.4 feet.
* Flood stage is 8.0 feet.
* At stages near 8.0 feet...The lower banks on the left side of the 
river overflow. 

&&
 
LAT...LON 4454 9696 4454 9687 4446 9686 4432 9685
          4432 9692 4443 9694

$$

SDC011-101-151936-
/O.EXT.KFSD.FL.W.0039.000000T0000Z-180417T1800Z/
/BRKS2.1.ER.180415T1200Z.180415T1800Z.180416T1800Z.NO/
1036 AM CDT Sat Apr 14 2018

...Flood Warning extended until Tuesday April 17... 
The Flood Warning continues for
  The Big Sioux River Near Brookings.
* until Tuesday afternoon.
* At 09AM Saturday the stage was 8.6 feet.
* Minor flooding is forecast.
* Flood stage is 9.0 feet.
* At stages near 9.0 feet...Significant amounts of pasture and farm 
lands begin flooding on the left bank of the river. The road south of
the Brookings water treatment plant is flooded, as is 217th Street 
between 468th and 469th Avenues. 

&&
 
LAT...LON 4432 9692 4432 9685 4421 9675 4414 9661
          4410 9665 4420 9683

$$

SDC099-151936-
/O.CON.KFSD.FL.W.0040.000000T0000Z-000000T0000Z/
/SFLS2.1.ER.180414T2100Z.180415T1200Z.000000T0000Z.NO/
1036 AM CDT Sat Apr 14 2018

The Flood Warning continues for
  The Big Sioux River At Sioux Falls I-90.
* until further notice.
* At 10AM Saturday the stage was 11.8 feet.
* Minor flooding is forecast.
* Flood stage is 12.0 feet.
* Forecast...Rise above flood stage by Saturday April 14 and continue
  to rise to near 12.4 feet by Sunday April 15. Additional rises are 
  possible thereafter.
* At stages near 12.0 feet...Some agricultural land between 60th 
Street North and Interstate 90 begins to flood. 

&&
 
LAT...LON 4370 9679 4370 9672 4361 9674 4360 9674
          4360 9676 4366 9676

$$

IAC149-167-SDC127-151936-
/O.EXT.KFSD.FL.W.0041.180415T1200Z-180418T0430Z/
/HWDI4.1.ER.180415T1200Z.180416T1800Z.180417T2230Z.UU/
1036 AM CDT Sat Apr 14 2018

The Flood Warning continues for
  The Big Sioux River above Hawarden.
* from Sunday morning to Tuesday evening.
* At 09AM Saturday the stage was 19.4 feet.
* Minor flooding is forecast.
* Flood stage is 20.5 feet.
* At stages near 20.5 feet...Agricultural flooding begins on the 
South Dakota side of the river. 

&&
 
LAT...LON 4331 9663 4331 9651 4314 9641 4303 9647
          4303 9654 4312 9654

$$

IAC149-SDC127-151936-
/O.EXT.KFSD.FL.W.0042.180416T0400Z-180420T0000Z/
/AKRI4.1.ER.180416T0400Z.180417T1200Z.180419T0000Z.NO/
1036 AM CDT Sat Apr 14 2018

The Flood Warning continues for
  The Big Sioux River At Akron.
* from Sunday evening to Thursday evening.
* At 10AM Saturday the stage was 14.1 feet.
* Minor flooding is forecast.
* Flood stage is 16.0 feet.
* At stages near 17.0 feet...About 6500 acres of farm land are 
flooded. 

&&
 
LAT...LON 4296 9657 4296 9645 4286 9652 4273 9648
          4273 9669 4277 9667

$$

IAC041-151936-
/O.EXT.KFSD.FL.W.0044.180415T0600Z-180416T1200Z/
/SPOI4.1.ER.180415T0600Z.180415T0600Z.180415T1200Z.NO/
1036 AM CDT Sat Apr 14 2018

The Flood Warning continues for
  The Ocheyedan River Near Spencer.
* from late tonight to Monday morning.
* At 09AM Saturday the stage was 7.2 feet.
* Flood stage is 8.0 feet.
* Forecast...The river is expected to rise to near flood stage Sunday
  April 15.
* At stages near 8.0 feet...Minor flooding of pasture land begins. 

&&
 
LAT...LON 4318 9540 4318 9533 4315 9520 4313 9513
          4312 9524 4315 9540

$$

IAC041-059-151936-
/O.CON.KFSD.FL.W.0048.000000T0000Z-000000T0000Z/
/MIFI4.1.ER.180414T0621Z.180414T1415Z.000000T0000Z.NO/
1036 AM CDT Sat Apr 14 2018

The Flood Warning continues for
  The Little Sioux River Near Milford.
* until further notice.
* At 09AM Saturday the stage was 12.5 feet.
* Flood stage is 12.0 feet.
* Recent activity...The river rose above flood stage on Saturday 
  April 14.
* At stages near 12.0 feet...Minor flooding of low lying agricultural
lands begins. 

&&
 
LAT...LON 4350 9533 4350 9526 4334 9519 4334 9516
          4328 9517 4329 9524

$$

IAC041-059-151800-
/O.EXT.KFSD.FL.W.0045.180415T0600Z-180415T1800Z/
/LSSI4.1.ER.180415T0600Z.180415T0600Z.180415T1200Z.UU/
1036 AM CDT Sat Apr 14 2018

The Flood Warning continues for
  The Little Sioux River Above Spencer.
* from late tonight to Sunday afternoon.
* Flood stage is 10.0 feet.
* At stages near 10.0 feet...Minor flooding of agricultural lands 
begins. 

&&
 
LAT...LON 4329 9524 4328 9517 4324 9523 4315 9512
          4315 9518 4324 9529

$$

IAC041-151936-
/O.CON.KFSD.FL.W.0046.000000T0000Z-000000T0000Z/
/SPWI4.1.ER.180414T0415Z.180415T1200Z.000000T0000Z.NO/
1036 AM CDT Sat Apr 14 2018

The Flood Warning continues for
  The Little Sioux River At Spencer.
* until further notice.
* At 09AM Saturday the stage was 10.8 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Flood stage is 10.0 feet.
* Recent activity...The river rose above flood stage on Friday April 
  13.
* Forecast...The river will continue rising to near 11.6 feet by 
  Sunday April 15. Additional rises may be possible thereafter.

&&
 
LAT...LON 4315 9518 4315 9512 4315 9505 4299 9503
          4302 9510 4310 9510

$$

IAC021-041-151936-
/O.EXT.KFSD.FL.W.0047.180416T0300Z-000000T0000Z/
/LNNI4.1.ER.180416T0300Z.180417T0600Z.000000T0000Z.NO/
1036 AM CDT Sat Apr 14 2018

The Flood Warning continues for
  The Little Sioux River At Linn Grove.
* from Sunday evening until further notice.
* At 10AM Saturday the stage was 17.5 feet.
* Minor flooding is forecast.
* Flood stage is 18.0 feet.
* Forecast...Rise above flood stage by Sunday April 15 and continue 
  to rise to near 18.5 feet by Tuesday April 17. Additional rises are
  possible thereafter.
* At stages near 18.5 feet...The city park in Sioux Rapids is 
flooded. 

&&
 
LAT...LON 4302 9510 4299 9503 4287 9512 4288 9536
          4296 9543 4293 9520

$$

IAC119-141606-
/O.CAN.KFSD.FL.W.0043.000000T0000Z-180416T0824Z/
/RAPI4.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1036 AM CDT Sat Apr 14 2018

The Flood Warning is cancelled for
  The Rock River At Rock Rapids.
* At 10AM Saturday the stage was 11.2 feet.
* Flood stage is 13.0 feet.
* Forecast...The river will crest below flood stage at 12.6 feet 
  Sunday April 15.
* At stages near 13.0 feet...The lower banks on the left side of the 
river will begin flooding. 

&&
 
LAT...LON 4350 9625 4350 9614 4338 9611 4331 9618
          4334 9625 4341 9619

$$

&& 
Location Flood  Latest  Observed   Maximum  Forecast  
         Stage  Stage   Time       Stage    Time       

BIG SIOUX RIVER
BRCS2     8.0    8.42   Sat 10 AM      M            
BRKS2     9.0    8.62   Sat 10 AM    9.1    Sun 1 PM    
SFLS2    12.0   11.84   Sat 10 AM   12.4    Sun 7 AM    
HWDI4    20.5   19.37   Sat  9 AM   21.5    Mon 1 PM    
AKRI4    16.0   14.11   Sat 10 AM   16.9    Tue 7 AM    

OCHEYEDAN RIVER
SPOI4     8.0    7.20   Sat 10 AM    8.0    Sun 1 AM    
 
LITTLE SIOUX RIVER
MIFI4    12.0   12.47   Sat  9 AM      M    
LSSI4    10.0       M               10.0    Sun 1 AM          
SPWI4    10.0   10.75   Sat  9 AM   11.6    Sun 7 AM    
LNNI4    18.0   17.51   Sat 10 AM   18.5    Tue 1 AM    

ROCK RIVER
RAPI4    13.0   11.23   Sat 10 AM   12.6    Sun 1 AM
594 
WGUS83 KFSD 150300
FLSFSD
Flood Statement
National Weather Service Sioux Falls SD
1000 PM CDT Sat Apr 14 2018

...The Flood Warning is cancelled for the following rivers in South 
Dakota...

  Big Sioux River Near Bruce
  Big Sioux River Near Brookings

...The Flood Warning continues for the following rivers in South 
Dakota...Iowa...

  Big Sioux River At Sioux Falls I-90
  Big Sioux River above Hawarden
  Big Sioux River At Akron
  Ocheyedan River Near Spencer
  Little Sioux River Near Milford
  Little Sioux River Above Spencer
  Little Sioux River At Spencer
  Little Sioux River At Linn Grove

.The following river forecasts include forecast precipitation through
tonight. Any additional future rains could affect the crest 
forecasts. 
 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Safety message...Do not drive cars through flooded areas. the water 
depth and road condition may be unsafe.

Additional information is available at 
 
http://water.weather.gov/ahps2/index.php?wfo=fsd

Stay tuned for further updates by listening to NOAA weather radio...
or your local radio and TV stations.

The next scheduled statement will be issued tomorrow morning.

&&

SDC011-150330-
/O.CAN.KFSD.FL.W.0038.000000T0000Z-180415T0300Z/
/BRCS2.1.ER.180413T1255Z.180414T1345Z.180414T1754Z.NO/
1000 PM CDT Sat Apr 14 2018

The Flood Warning is cancelled for
  The Big Sioux River Near Bruce.
* At 08PM Saturday the stage was 6.4 feet.
* Flood stage is 8.0 feet.

&&
 
LAT...LON 4454 9696 4454 9687 4446 9686 4432 9685
          4432 9692 4443 9694

$$

SDC011-101-150330-
/O.CAN.KFSD.FL.W.0039.000000T0000Z-180417T1800Z/
/BRKS2.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1000 PM CDT Sat Apr 14 2018

The Flood Warning is cancelled for
  The Big Sioux River Near Brookings.
* At 08PM Saturday the stage was 7.5 feet.
* Flood stage is 9.0 feet.
* Forecast...The river crested below flood stage at 8.7 feet. The 
  river will fall to 7.1 feet by 4/18.

&&
 
LAT...LON 4432 9692 4432 9685 4421 9675 4414 9661
          4410 9665 4420 9683

$$

SDC099-160700-
/O.CON.KFSD.FL.W.0040.000000T0000Z-000000T0000Z/
/SFLS2.1.ER.180415T0130Z.180415T1200Z.000000T0000Z.NO/
1000 PM CDT Sat Apr 14 2018

The Flood Warning continues for
  The Big Sioux River At Sioux Falls I-90.
* until further notice.
* At 09PM Saturday the stage was 12.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Flood stage is 12.0 feet.
* Recent activity...The river rose above flood stage on Saturday 
  April 14.
* Forecast...The river will continue rising to near 12.3 feet by 
  Sunday April 15. Additional rises may be possible thereafter.
* At stages near 12.0 feet...Some agricultural land between 60th 
  Street North and Interstate 90 begins to flood. 

&&
 
LAT...LON 4370 9679 4370 9672 4361 9674 4360 9674
          4360 9676 4366 9676

$$

IAC149-167-SDC127-160700-
/O.CON.KFSD.FL.W.0041.180415T1200Z-180418T0430Z/
/HWDI4.1.ER.180415T1200Z.180416T1800Z.180417T2230Z.UU/
1000 PM CDT Sat Apr 14 2018

The Flood Warning continues for
  The Big Sioux River above Hawarden.
* from Sunday morning to Tuesday evening.
* At 09PM Saturday the stage was 20.2 feet.
* Minor flooding is forecast.
* Flood stage is 20.5 feet.
* At stages near 20.5 feet...Agricultural flooding begins on the 
  South Dakota side of the river. 

&&
 
LAT...LON 4331 9663 4331 9651 4314 9641 4303 9647
          4303 9654 4312 9654

$$

IAC149-SDC127-160700-
/O.CON.KFSD.FL.W.0042.180416T0400Z-180420T0000Z/
/AKRI4.1.ER.180416T0400Z.180417T1200Z.180419T0000Z.NO/
1000 PM CDT Sat Apr 14 2018

The Flood Warning continues for
  The Big Sioux River At Akron.
* from Sunday evening to Thursday evening.
* At 09PM Saturday the stage was 14.9 feet.
* Minor flooding is forecast.
* Flood stage is 16.0 feet.
* At stages near 17.0 feet...About 6500 acres of farm land are 
  flooded. 

&&
 
LAT...LON 4296 9657 4296 9645 4286 9652 4273 9648
          4273 9669 4277 9667

$$

IAC041-160700-
/O.CON.KFSD.FL.W.0044.180415T0600Z-180416T1200Z/
/SPOI4.1.ER.180415T0600Z.180415T0600Z.180415T1200Z.NO/
1000 PM CDT Sat Apr 14 2018

The Flood Warning continues for
  The Ocheyedan River Near Spencer.
* from late tonight to Monday morning.
* At 08PM Saturday the stage was 7.7 feet.
* Flood stage is 8.0 feet.
* Forecast...The river is expected to rise to near flood stage Sunday
  April 15.
* At stages near 8.0 feet...Minor flooding of pasture land begins. 

&&
 
LAT...LON 4318 9540 4318 9533 4315 9520 4313 9513
          4312 9524 4315 9540

$$

IAC041-059-160700-
/O.CON.KFSD.FL.W.0048.000000T0000Z-000000T0000Z/
/MIFI4.1.ER.180414T0621Z.180414T1615Z.000000T0000Z.NO/
1000 PM CDT Sat Apr 14 2018

The Flood Warning continues for
  The Little Sioux River Near Milford.
* until further notice.
* At 09PM Saturday the stage was 12.6 feet.
* Flood stage is 12.0 feet.
* Recent activity...The river rose above flood stage on Saturday 
  April 14.
* At stages near 12.0 feet...Minor flooding of low lying agricultural
  lands begins. 

&&
 
LAT...LON 4350 9533 4350 9526 4334 9519 4334 9516
          4328 9517 4329 9524

$$

IAC041-059-151800-
/O.CON.KFSD.FL.W.0045.000000T0000Z-180415T1800Z/
/LSSI4.1.ER.000000T0000Z.180415T0600Z.180415T1200Z.UU/
1000 PM CDT Sat Apr 14 2018

The Flood Warning continues for
  The Little Sioux River Above Spencer.
* until Sunday afternoon.
* Flood stage is 10.0 feet.
* At stages near 10.0 feet...Minor flooding of agricultural lands 
  begins. 

&&
 
LAT...LON 4329 9524 4328 9517 4324 9523 4315 9512
          4315 9518 4324 9529

$$

IAC041-160700-
/O.CON.KFSD.FL.W.0046.000000T0000Z-000000T0000Z/
/SPWI4.1.ER.180414T0415Z.180415T1200Z.000000T0000Z.NO/
1000 PM CDT Sat Apr 14 2018

The Flood Warning continues for
  The Little Sioux River At Spencer.
* until further notice.
* At 09PM Saturday the stage was 11.4 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Flood stage is 10.0 feet.
* Recent activity...The river rose above flood stage on Friday April 
  13.
* Forecast...The river will continue rising to near 11.6 feet by 
  Sunday April 15. Additional rises may be possible thereafter.

&&
 
LAT...LON 4315 9518 4315 9512 4315 9505 4299 9503
          4302 9510 4310 9510

$$

IAC021-041-160700-
/O.EXT.KFSD.FL.W.0047.180416T0000Z-180420T1800Z/
/LNNI4.1.ER.180416T0000Z.180417T0000Z.180419T1800Z.NO/
1000 PM CDT Sat Apr 14 2018

The Flood Warning continues for
  The Little Sioux River At Linn Grove.
* from Sunday evening to Friday afternoon.
* At 09PM Saturday the stage was 17.6 feet.
* Minor flooding is forecast.
* Flood stage is 18.0 feet.
* At stages near 18.5 feet...The city park in Sioux Rapids is 
  flooded. 

&&
 
LAT...LON 4302 9510 4299 9503 4287 9512 4288 9536
          4296 9543 4293 9520

$$

&& 
Location Flood  Latest Observed   Maximum Forecast   Recent Observed
         Stage  Stage  Time       Stage   Time       Crest  Time

BIG SIOUX RIVER
BRCS2    8.0    6.38   Sat 9 PM                      8.5  Sat Apr 14
BRKS2    9.0    7.51   Sat 9 PM                      8.9  Sat Apr 14
SFLS2    12.0   12.01  Sat 9 PM   12.3    Sun 7 AM
HWDI4    20.5   20.20  Sat 9 PM   21.5    Mon 1 PM
AKRI4    16.0   14.88  Sat 9 PM   16.9    Tue 7 AM   

OCHEYEDAN RIVER
SPOI4    8.0    7.65   Sat 9 PM   8.0     Sun 1 AM   

LITTLE SIOUX RIVER
MIFI4    12.0   12.62 Sat 9 PM                       12.9  Sat Apr 14
LSSI4    10.0                     10.0    Sun 1 AM
SPWI4    10.0   11.44 Sat 9 PM    11.6    Sun 7 AM
LNNI4    18.0   17.61 Sat 9 PM    18.5    Mon 7 PM

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 Sioux Falls, SD wrote its last area forecast discussion before this river flood warning went out at Apr 13, 6:05 AM CDT, 3 hours 36 minutes earlier.

Area forecast discussion, Apr 13, 6:05 AM CDT, 3 hours 36 minutes before
Area Forecast Discussion
National Weather Service Sioux Falls SD
605 AM CDT Fri Apr 13 2018

.SHORT TERM...(Today and Tonight)
Issued at 453 AM CDT Fri Apr 13 2018

So it begins. A strong April winter storm is at the doorstep.
Weather conditions will continue to deteriorate today into Saturday
with thunderstorms (some of them could become strong to severe),
strong winds, and to top it all snow!

As of 08Z Friday, surface observations show the strong surface low
positioned over central Kansas/Nebraska border. Models come into
better agreement on the southward track of the upper level wave
associated with this surface slow, bringing the upper wave and lee
side closed low over eastern NE this afternoon. In response of this
surface low, a strong low-level jet and theta-e advection are
beginning to surge northward creating a favorable environment for
elevated thunderstorms early this morning. Radar has started to show
scattered thunderstorms quickly developing along the Missouri River
Valley and northwest Iowa. With steep lapse rates and decent
instability some of these storms may produce hail early this
morning. Rain showers and thunderstorms are expected to continue and
expand northward across the rest of the FA in the morning hours. As
we get into the afternoon hours, another round of elevated
convection will be possible as the strong closed low spins east
northeast into eastern NE and IA. With decent moisture surging
northward, and shear, cannot ruled out isolated thunderstorms in
northwest Iowa, possibly extending northward into southwest
Minnesota. The most likely time for isolated strong to severe
thunderstorms will be after 22Z Friday, with large hail as main
threat.

Confidence remains high for heavy snow across most of the FA today
into Saturday. As colder air and considerable moisture wraps around
the large scale upper wave, rain will begin to change over to snow
after 18Z Friday, mainly along and east of the James River, before
spreading east in the evening and overnight hours, where the TROWAL
begins to take shape over the region.

While confidence remains high that heavy snow will impact the area,
uncertainty in snow amounts and location of the heaviest
accumulations still remain. Mid-level frontogenesis is strongest
across southeast SD, just beneath highest QPF and strong
instability/DivQ aloft. Models bring the heaviest the 6 hr-QPF of
0.25"- 0.60" almost across the entire region. The ECMWF is the
most robust placing the highest QPF mostly east of the I-29
corridor. Above the maximized frontogenesis, models indicate a
less stable to unstable EPV* at 600 mb to 500 mb layer.
Furthermore, thermal profiles show a deep dendritic layer,
suggesting high snow rates, mainly after 00Z Saturday. That said,
have blended model consensus placing high QPF and snowfall across
the entire CWA. Snowfall rates of 1 to 2 inches per hour. Overall,
snowfall accumulations have increased and shifted eastward,
compared to previous forecast. Lowest snow amounts are expected
mainly along and south of Highway 18 in northwest Iowa with 2 to 5
inches of snow possible.

As the system moves eastward, tight pressure gradients will lead to
strong winds from 30 to 45 mph, gusting as high as 55 mph. With that
said, has blended MOSGuidance to produce winds up to 55 mph. Also
continue the blizzard wording. That said, have continued the
Blizzard Warning for southeast South Dakota, southwest Minnesota and
portions of northwest Iowa. Did not resolve the Winter Storm Watch
due to uncertainties in precipitation type and possible loss of ice-
accretion in that area, as model soundings suggest.

.LONG TERM...(Saturday through Thursday)
Issued at 453 AM CDT Fri Apr 13 2018

Saturday looks to be the "worse" day with moderate to heavy snow and
blizzard conditions continuing in the morning across most of the
area. Conditions will gradually improve in the afternoon hours from
west to east, the closed surface low exits the region, and the winds
begin to decrease.

For the remainder of the extended, dry conditions are expected
Sunday into Tuesday as an amplified ridge builds in. Chances of
precipitation are present as another upper trough moves across the
area.

&&

.AVIATION...(For the 12Z TAFS through 12Z Saturday morning)
Issued at 555 AM CDT Fri Apr 13 2018

Scattered thunderstorms will continue to develop across the area
this morning, affecting all TAF sites. Rain will begin to mix with
or change to snow in the afternoon hours across the KHON terminal
and in the evening through early Saturday morning in KFSD and
KSUX.

Heavy snow and strong north winds gusting to 55 mph are expected
today into Saturday, producing visibility restrictions across the
region. MVFR/IFR conditions will prevail through the TAF period.

&&

.FSD WATCHES/WARNINGS/ADVISORIES...
SD...Blizzard Warning from 7 PM this evening to 7 PM CDT Saturday for
     SDZ039-040-054>056-060>062-065>070.

     Blizzard Warning from 1 PM this afternoon to 4 PM CDT Saturday
     for SDZ038-050-052-053-057>059-063-064.

     Blizzard Warning from 1 AM to 7 PM CDT Saturday for SDZ071.

MN...Blizzard Warning from 7 PM this evening to 7 PM CDT Saturday for
     MNZ071-072-080-097-098.

     Blizzard Warning from 10 PM this evening to 10 PM CDT Saturday
     for MNZ081-089-090.

IA...Blizzard Warning from 1 AM to 10 PM CDT Saturday for IAZ002-003-
     013-014.

     Blizzard Warning from 1 AM to 7 PM CDT Saturday for IAZ001-012-
     020.

     Winter Storm Watch from late tonight through Saturday evening
     for IAZ021-022-031-032.

NE...Blizzard Warning from 1 AM to 7 PM CDT Saturday for NEZ013-014.

&&

SHORT TERM...05
LONG TERM...05
AVIATION...05
Hazardous weather outlook, Apr 13, 5:24 AM CDT, 4 hours 17 minutes before
Hazardous Weather Outlook
National Weather Service Sioux Falls SD
524 AM CDT Fri Apr 13 2018

IAZ001>003-012>014-020>022-031-032-MNZ071-072-080-081-089-090-097-
098-NEZ013-014-SDZ038>040-050-052>071-141030-
Lyon IA-Osceola-Dickinson-Sioux-O'Brien-Clay IA-Plymouth-Cherokee-
Buena Vista-Woodbury-Ida-Lincoln MN-Lyon MN-Murray-Cottonwood-
Nobles-Jackson-Pipestone-Rock-Dixon-Dakota-Beadle-Kingsbury-
Brookings-Gregory-Jerauld-Sanborn-Miner-Lake-Moody-Brule-Aurora-
Davison-Hanson-McCook-Minnehaha-Charles Mix-Douglas-Hutchinson-
Turner-Lincoln SD-Bon Homme-Yankton-Clay SD-Union-
524 AM CDT Fri Apr 13 2018

This Hazardous Weather Outlook is for portions of northwest Iowa,
west central Iowa, southwest Minnesota, northeast Nebraska,
central South Dakota, east central South Dakota, south central
South Dakota, and southeast South Dakota.

.DAY ONE...Today and Tonight

Scattered thunderstorms will continue to move across the region
Friday morning and afternoon. A strong storm or two with small
hail and locally heavy rain is possible.

A strong late winter storm will impact the area today through
Saturday night, with moderate to heavy snow, and strong north
winds in excess of 30 mph with gusts up to 55 mph.

A blizzard warning is in effect for the area Friday afternoon
into Saturday. The combination of snow and wind will create
significant impacts including infrastructure and travel. Travel
may be extremely difficult to impossible Friday night into
Saturday.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Heavy snow and blizzard conditions will continue across the areas
through Saturday night. Travel may be extremely difficult to
impossible Saturday through the day.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected, but any reports will be
appreciated.

In the hours before

Local storm report, Apr 13, 7:05 AM CDT, 2 hours 36 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
705 AM CDT FRI APR 13 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0659 AM     HAIL             3 ESE SIOUX FALLS       43.53N 96.68W
04/13/2018  M0.75 INCH       MINNEHAHA          SD   TRAINED SPOTTER

0648 AM     HAIL             5 W SIOUX FALLS         43.53N 96.82W
04/13/2018  E0.50 INCH       MINNEHAHA          SD   NWS EMPLOYEE

&&
Local storm report, Apr 13, 8:05 AM CDT, 1 hour 36 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
805 AM CDT FRI APR 13 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0758 AM     HAIL             2 E WILMONT             43.76N 95.79W
04/13/2018  E0.75 INCH       NOBLES             MN   TRAINED SPOTTER

0716 AM     TSTM WND GST     1 WSW BEAVER CREEK      43.61N 96.38W
04/13/2018  M75 MPH          ROCK               MN   DEPT OF HIGHWAYS

            REPORTS OF NUMEROUS POWER POLES DOWN ALONG
            I-90 NEAR MAGNOLIA EXIT.

&&
Local storm report, Apr 13, 8:23 AM CDT, 1 hour 18 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
823 AM CDT FRI APR 13 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0800 AM     TSTM WND DMG     2 E WILMONT             43.76N 95.79W
04/13/2018                   NOBLES             MN   TRAINED SPOTTER

            DAMAGE TO MACHINE SHED. PIECE OF FARM
            EQUIPMENT WAS PUSHED INTO POWER POLE.

&&
Local storm report, Apr 13, 8:32 AM CDT, 1 hour 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
832 AM CDT FRI APR 13 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0752 AM     TSTM WND GST     1 N RUSHMORE            43.64N 95.79W
04/13/2018  M78 MPH          NOBLES             MN   DEPT OF HIGHWAYS

            MEASURED BY MNDOT RWIS.

&&

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 13, 5:21 AM CDTSevere Thunderstorm WarningFSDDouglas, Hutchinson24 min
Apr 13, 9:41 AM CDTRiver Flood WarningFSDBrookings36 hr
Apr 13, 9:41 AM CDTRiver Flood WarningFSDMinnehaha59 hr
Apr 13, 9:41 AM CDTRiver Flood WarningFSDUnion59 hr
Apr 13, 9:41 AM CDTRiver Flood WarningFSDUnion3 days
Apr 13, 10:33 AM CDTSevere Thunderstorm WarningFSDCharles Mix, Gregory42 min
Apr 13, 10:56 AM CDTSevere Thunderstorm WarningFSDCharles Mix, Douglas, Hutchinson49 min
Apr 13, 11:36 AM CDTSevere Thunderstorm WarningFSDDavison, Douglas, Hanson, Hutchinson39 min
Apr 13, 12:27 PM CDTSevere Thunderstorm WarningFSDHanson, Lake, McCook, Miner, Minnehaha48 min
Apr 13, 12:39 PM CDTSevere Thunderstorm WarningFSDBrookings36 min
Apr 13, 1:18 PM CDTSevere Thunderstorm WarningFSDBrookings, Kingsbury, Lake17 min

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.