Alert archive / Iowa / River Flood Warnings in 2018

River Flood Warning 60, NWS Sioux Falls, SD

April 18, 2018Cherokee County, Iowa

NWS Sioux Falls, SD issued this river flood warning at Apr 18, 2018, 10:02 AM CDT for Cherokee County, Iowa. It took effect at Apr 23, 2018, 1:00 AM CDT. It was in force for .

The area

The outline as issued.

The facts

Issued
Apr 18, 2018, 10:02 AM CDT (15:02 UTC)
In effect from
Apr 23, 2018, 1:00 AM CDT
Expired
Apr 21, 2018, 10:52 AM CDT
In force
Issued by
NWS Sioux Falls, SD
Area
Storm-based polygon
Flood severity
Minor

County Cherokee County, IA

The radar

The Sioux Falls radar (KFSD), 132 km from the middle of the area, began a volume at 15:06 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 Little Sioux River at Cherokee (CHKI4).

Action stage
15 ft
Minor stage
17 ft
Moderate stage
21 ft
Major stage
24 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

The text

As transmitted.

708 
WGUS43 KFSD 181502
FLWFSD
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Sioux Falls SD
1002 AM CDT Wed Apr 18 2018

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

  James River Near Forestburg
  James River At Mitchell
  James River Near Scotland
  Firesteel Creek Near Mount Vernon
  Rock River At Rock Rapids
  Ocheyedan River Near Spencer
  Little Sioux River At Cherokee

  ...Forecast flooding changed from Minor to Moderate severity for the 
following rivers in Iowa...South Dakota...
  
  Big Sioux River At Akron
 
.The following river forecasts include forecast precipitation through
tonight. Any additional future rains could affect the crest 
forecasts. 
 
The snow pack from the recent storms will begin melting later this week
as temperatures finally begin to warm up, and runoff from this snow melt
will cause significant rises on the area rivers and streams. With a fairly
slow melt through the early to middle parts of next week, flooding is 
still expected to remain minor for most areas.

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.

&&

SDC111-191901-
/O.NEW.KFSD.FL.W.0054.180424T1800Z-000000T0000Z/
/FORS2.1.ER.180424T1800Z.180425T1200Z.000000T0000Z.NO/
1002 AM CDT Wed Apr 18 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The James River Near Forestburg.
* from Tuesday afternoon until further notice.
* At 09AM Wednesday the stage was 6.1 feet.
* Minor flooding is forecast.
* Flood stage is 12.0 feet.
* Forecast...Rise above flood stage by Tuesday. Additional rises are 
  possible thereafter.
* At stages near 12.0 feet...Flooding begins over the left bank and a
  few county or township roads begin to flood. 

&&
 
LAT...LON 4420 9822 4420 9810 4402 9802 4393 9798
          4393 9812 4409 9816

$$

SDC035-061-191901-
/O.NEW.KFSD.FL.W.0055.180423T2000Z-000000T0000Z/
/JRMS2.1.ER.180423T2000Z.180425T1200Z.000000T0000Z.NO/
1002 AM CDT Wed Apr 18 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The James River At Mitchell.
* from Monday afternoon until further notice.
* At 08AM Wednesday the stage was 12.7 feet.
* Minor flooding is forecast.
* Flood stage is 17.0 feet.
* Forecast...Rise above flood stage by Monday and continue to 
  rise to near 18.9 feet by next Wednesday. Additional rises are 
  possible thereafter.
* At stages near 20.0 feet...The higher banks overflow. 

&&
 
LAT...LON 4393 9812 4393 9798 4370 9789 4340 9763
          4338 9777 4351 9797

$$

SDC067-135-191901-
/O.NEW.KFSD.FL.W.0056.180422T2200Z-000000T0000Z/
/SCOS2.2.ER.180422T2200Z.180425T0600Z.000000T0000Z.NO/
1002 AM CDT Wed Apr 18 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The James River Near Scotland.
* from Sunday afternoon until further notice.
* At 09AM Wednesday the stage was 8.1 feet.
* Moderate flooding is forecast.
* Flood stage is 13.0 feet.
* Forecast...Rise above flood stage by Sunday and continue to 
  rise to near 15.1 feet by next Wednesday. Additional rises are 
  possible thereafter.
* At stages near 15.5 feet...431st Avenue is flooded where it crosses
  the river in northwestern Yankton County. 

&&
 
LAT...LON 4338 9777 4340 9763 4321 9755 4308 9736
          4308 9750 4317 9769

$$

IAC149-SDC127-191901-
/O.EXT.KFSD.FL.W.0053.180423T0000Z-000000T0000Z/
/AKRI4.2.ER.180423T0000Z.180426T0000Z.000000T0000Z.NO/
1002 AM CDT Wed Apr 18 2018

...Forecast flooding increased from Minor to Moderate severity...
The Flood Warning continues for 
 The Big Sioux River At Akron.
* from Sunday evening until further notice.
* At 09AM Wednesday the stage was 14.2 feet.
* Moderate flooding is forecast.
* Flood stage is 16.0 feet.
* Forecast...Rise above flood stage by Sunday and crest near 
  18.0 feet by next Wednesday.
* 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

$$

SDC035-191901-
/O.NEW.KFSD.FL.W.0057.180422T2200Z-000000T0000Z/
/MTVS2.1.ER.180422T2200Z.180424T1200Z.000000T0000Z.NO/
1002 AM CDT Wed Apr 18 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Firesteel Creek Near Mount Vernon.
* from Sunday afternoon until further notice.
* At 09AM Wednesday the stage was 3.2 feet.
* Minor flooding is forecast.
* Flood stage is 8.0 feet.
* Forecast...Rise above flood stage by Sunday and crest near
  10.0 feet by Tuesday.

&&
 
LAT...LON 4383 9850 4392 9842 4381 9829 4379 9807
          4373 9805 4374 9831

$$

IAC119-191901-
/O.NEW.KFSD.FL.W.0058.180422T0000Z-000000T0000Z/
/RAPI4.1.ER.180422T0000Z.180423T0000Z.000000T0000Z.NO/
1002 AM CDT Wed Apr 18 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Rock River At Rock Rapids.
* from Saturday evening until further notice.
* At 09AM Wednesday the stage was 10.6 feet.
* Minor flooding is forecast.
* Flood stage is 13.0 feet.
* Forecast...Rise above flood stage by Saturday and crest near
  13.8 feet Sunday.
* 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

$$

IAC041-191901-
/O.NEW.KFSD.FL.W.0059.180422T1500Z-000000T0000Z/
/SPOI4.1.ER.180422T1500Z.180423T1200Z.000000T0000Z.NO/
1002 AM CDT Wed Apr 18 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Ocheyedan River Near Spencer.
* from Sunday morning until further notice.
* At 08AM Wednesday the stage was 6.2 feet.
* Minor flooding is forecast.
* Flood stage is 8.0 feet.
* Forecast...Rise above flood stage by Sunday and crest near
  8.4 feet Monday.
* 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

$$

IAC035-191901-
/O.NEW.KFSD.FL.W.0060.180426T0600Z-000000T0000Z/
/CHKI4.1.ER.180426T0600Z.180428T0000Z.000000T0000Z.NO/
1002 AM CDT Wed Apr 18 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Little Sioux River At Cherokee.
* from Thursday April 26 until further notice.
* At 09AM Wednesday the stage was 14.6 feet.
* Minor flooding is forecast.
* Flood stage is 17.0 feet.
* Forecast...Rise above flood stage Thursday April 26 and crest
  near 17.5 feet Friday April 27. 
* At stages near 18.0 feet...Cherokee city park begins to flood on 
  the south bank of the river. 

&&
 
LAT...LON 4296 9543 4291 9539 4265 9557 4256 9569
          4256 9578 4270 9564

$$

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

JAMES RIVER
FORS2    12.0    6.08 Wed 9 AM    12.3  Wed Apr 25
JRMS2    17.0   12.68 Wed 9 AM    18.9  Wed Apr 25
SCOS2    13.0    8.07 Wed 9 AM    15.1  Wed Apr 25

BIG SIOUX RIVER
AKRI4    16.0   14.25 Wed 9 AM    18.0  Wed Apr 25

FIRESTEEL CREEK
MTVS2     8.0    3.22 Wed 9 AM    10.0  Tue Apr 24

ROCK RIVER
RAPI4    13.0   10.57 Wed 9 AM    13.8  Sun Apr 22

OCHEYEDAN RIVER
SPOI4     8.0    6.16 Wed 9 AM     8.4  Mon Apr 23

LITTLE SIOUX RIVER
CHKI4    17.0   14.59 Wed 9 AM    17.5  Fri Apr 27

MG
3 follow-up statements
336 
WGUS83 KFSD 191553
FLSFSD
Flood Statement
National Weather Service Sioux Falls SD
1053 AM CDT Thu Apr 19 2018

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

  Little Sioux River Near Milford

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

  James River Near Forestburg
  James River At Mitchell
  James River Near Scotland
  James River Above Yankton
  Firesteel Creek Near Mount Vernon
  Vermillion River Near Davis
  Vermillion River Near Wakonda
  Big Sioux River Near Brookings
  Big Sioux River Near Dell Rapids
  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 At Spencer
  Little Sioux River At Linn Grove
  Little Sioux River At Cherokee
  Redwood River Near Marshall
 
.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.

&&

SDC111-201953-
/O.EXT.KFSD.FL.W.0054.180423T1536Z-000000T0000Z/
/FORS2.1.ER.180423T1536Z.180425T0000Z.000000T0000Z.NO/
1053 AM CDT Thu Apr 19 2018

The Flood Warning continues for
  The James River Near Forestburg.
* from Monday morning until further notice.
* At 09AM Thursday the stage was 6.4 feet.
* Minor flooding is forecast.
* Flood stage is 12.0 feet.
* Forecast...Rise above flood stage by Monday April 23 and crest near
  13.6 feet by Tuesday April 24.
* At stages near 14.0 feet...Many of the county and township roads 
  along the river are under water. 

&&
 
LAT...LON 4420 9822 4420 9810 4402 9802 4393 9798
          4393 9812 4409 9816

$$

SDC035-061-201953-
/O.EXT.KFSD.FL.W.0055.180423T1545Z-000000T0000Z/
/JRMS2.1.ER.180423T1545Z.180426T0600Z.000000T0000Z.NO/
1053 AM CDT Thu Apr 19 2018

The Flood Warning continues for
  The James River At Mitchell.
* from Monday morning until further notice.
* At 09AM Thursday the stage was 12.9 feet.
* Minor flooding is forecast.
* Flood stage is 17.0 feet.
* Forecast...Rise above flood stage by Monday April 23 and continue 
  to rise to near 19.7 feet by Thursday April 26. Additional rises 
  are possible thereafter.
* At stages near 20.0 feet...The higher banks overflow. 

&&
 
LAT...LON 4393 9812 4393 9798 4370 9789 4340 9763
          4338 9777 4351 9797

$$

SDC067-135-201953-
/O.EXT.KFSD.FL.W.0056.180422T1800Z-000000T0000Z/
/SCOS2.2.ER.180422T1800Z.180426T0600Z.000000T0000Z.NO/
1053 AM CDT Thu Apr 19 2018

The Flood Warning continues for
  The James River Near Scotland.
* from Sunday afternoon until further notice.
* At 09AM Thursday the stage was 10.4 feet.
* Moderate flooding is forecast.
* Flood stage is 13.0 feet.
* Forecast...Rise above flood stage by Sunday April 22 and continue 
  to rise to near 15.4 feet by Thursday April 26. Additional rises 
  are possible thereafter.
* At stages near 15.5 feet...431st Avenue is flooded where it crosses
  the river in northwestern Yankton County. 

&&
 
LAT...LON 4338 9777 4340 9763 4321 9755 4308 9736
          4308 9750 4317 9769

$$

SDC135-201953-
/O.CON.KFSD.FL.W.0061.180425T1930Z-000000T0000Z/
/YNNS2.1.ER.180425T1930Z.180426T1200Z.000000T0000Z.NO/
1053 AM CDT Thu Apr 19 2018

The Flood Warning continues for
  The James River Above Yankton.
* from Wednesday afternoon until further notice.
* At 10AM Thursday the stage was 7.0 feet.
* Minor flooding is forecast.
* Flood stage is 12.0 feet.
* Forecast...Rise above flood stage by Wednesday April 25 and 
  continue to rise to near 12.9 feet by Thursday April 26. Additional
  rises are possible thereafter.
* At stages near 12.0 feet...Significant agricultural flooding 
  begins. 

&&
 
LAT...LON 4308 9750 4308 9736 4298 9731 4287 9722
          4287 9737 4298 9741

$$

SDC011-101-201953-
/O.EXT.KFSD.FL.W.0049.180421T0400Z-180427T1200Z/
/BRKS2.2.ER.180421T0400Z.180423T1200Z.180426T1200Z.NO/
1053 AM CDT Thu Apr 19 2018

The Flood Warning continues for
  The Big Sioux River Near Brookings.
* from Friday evening to Friday April 27.
* At 09AM Thursday the stage was 7.8 feet.
* Moderate flooding is forecast.
* Flood stage is 9.0 feet.
* Forecast...Rise above flood stage on Friday April 20 and crest near
  10.6 feet on Monday April 23.
* At stages near 10.3 feet...473rd Avenue north of the gauge begins to
  flood. 

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

$$

SDC099-101-201953-
/O.EXT.KFSD.FL.W.0050.180421T2248Z-180427T1500Z/
/DERS2.1.ER.180421T2248Z.180423T0600Z.180426T1500Z.NO/
1053 AM CDT Thu Apr 19 2018

The Flood Warning continues for
  The Big Sioux River Near Dell Rapids.
* from Saturday afternoon to Friday April 27.
* At 10AM Thursday the stage was 9.0 feet.
* Minor flooding is forecast.
* Flood stage is 12.0 feet.
* Forecast...Rise above flood stage on Saturday April 21 and crest
  near 13.1 feet on Monday April 23.
* At stages near 14.0 feet...Significant amounts of agricultural 
  lands are flooded through the basin. 

&&
 
LAT...LON 4394 9673 4394 9665 4379 9665 4379 9672
          4370 9672 4370 9679

$$

SDC099-201953-
/O.EXT.KFSD.FL.W.0051.180420T1800Z-180429T1200Z/
/SFLS2.1.ER.180420T1800Z.180423T0600Z.180428T1200Z.NO/
1053 AM CDT Thu Apr 19 2018

The Flood Warning continues for
  The Big Sioux River At Sioux Falls I-90.
* from Friday afternoon to Sunday April 29.
* At 10AM Thursday the stage was 11.4 feet.
* Minor flooding is forecast.
* Flood stage is 12.0 feet.
* Forecast...Rise above flood stage on Friday April 20 and crest near
  13.7 feet on Monday April 23.
* 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-SDC127-201953-
/O.EXT.KFSD.FL.W.0052.180422T0400Z-180428T1500Z/
/HWDI4.1.ER.180422T0400Z.180425T0000Z.180428T0900Z.UU/
1053 AM CDT Thu Apr 19 2018

The Flood Warning continues for
  The Big Sioux River above Hawarden.
* from Saturday evening to Saturday April 28.
* At 09AM Thursday the stage was 19.6 feet.
* Minor flooding is forecast.
* Flood stage is 20.5 feet.
* Forecast...Rise above flood stage on Saturday April 21 and crest near
  23.4 feet on Wednesday April 25.
* 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-SDC127-201953-
/O.EXT.KFSD.FL.W.0053.180422T1500Z-180430T0600Z/
/AKRI4.2.ER.180422T1500Z.180425T1200Z.180429T0600Z.NO/
1053 AM CDT Thu Apr 19 2018

The Flood Warning continues for
  The Big Sioux River At Akron.
* from Sunday morning to Monday April 30.
* At 10AM Thursday the stage was 15.0 feet.
* Moderate flooding is forecast.
* Flood stage is 16.0 feet.
* Forecast...Rise above flood stage on Sunday April 22 and crest near
  18.0 feet on Wednesday April 25.
* 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

$$

SDC035-201953-
/O.EXT.KFSD.FL.W.0057.180423T0100Z-000000T0000Z/
/MTVS2.1.ER.180423T0100Z.180424T1200Z.000000T0000Z.NO/
1053 AM CDT Thu Apr 19 2018

The Flood Warning continues for
  The Firesteel Creek Near Mount Vernon.
* from Sunday evening until further notice.
* At 09AM Thursday the stage was 3.7 feet.
* Minor flooding is forecast.
* Flood stage is 8.0 feet.
* Forecast...Rise above flood stage by Sunday April 22 and crest near 
  10.1 feet by Tuesday April 24.

&&
 
LAT...LON 4383 9850 4392 9842 4381 9829 4379 9807
          4373 9805 4374 9831

$$

SDC125-201953-
/O.CON.KFSD.FL.W.0062.180424T0430Z-000000T0000Z/
/DVSS2.1.ER.180424T0430Z.180426T0000Z.000000T0000Z.NO/
1053 AM CDT Thu Apr 19 2018

The Flood Warning continues for
  The Vermillion River Near Davis.
* from Monday evening until further notice.
* At 07AM Thursday the stage was estimated at 7.2 feet.
* Minor flooding is forecast.
* Flood stage is 11.0 feet.
* Forecast...Rise above flood stage by Tuesday April 24 and crest near 
  12.4 feet by Thursday April 26.
* At stages near 12.0 feet...Highway 18 west of Davis will being 
  flooding, and several houses in the western parts of Davis are in 
  danger of flooding. 

&&
 
LAT...LON 4340 9710 4340 9704 4327 9696 4318 9689
          4310 9694 4310 9703

$$

SDC027-201953-
/O.CON.KFSD.FL.W.0063.180425T1200Z-000000T0000Z/
/WKAS2.1.ER.180425T1200Z.180426T1200Z.000000T0000Z.NO/
1053 AM CDT Thu Apr 19 2018

The Flood Warning continues for
  The Vermillion River Near Wakonda.
* from Wednesday morning until further notice.
* At 07AM Thursday the stage was estimated at 8.4 feet.
* Minor flooding is forecast.
* Flood stage is 14.0 feet.
* Forecast...Rise above flood stage by Wednesday April 25 and 
  continue to rise to near 14.6 feet by Thursday April 26. Additional
  rises are possible thereafter.
* At stages near 15.0 feet...Highway 19 south of Centerville could 
  start flooding if the levees fail. 

&&
 
LAT...LON 4310 9703 4310 9694 4291 9690 4291 9701
          4295 9700 4300 9704

$$

IAC119-201953-
/O.EXT.KFSD.FL.W.0058.180421T2230Z-180425T1000Z/
/RAPI4.1.ER.180421T2230Z.180422T1800Z.180424T1000Z.NO/
1053 AM CDT Thu Apr 19 2018

The Flood Warning continues for
  The Rock River At Rock Rapids.
* from Saturday afternoon to late Tuesday night.
* At 10AM Thursday the stage was 10.6 feet.
* Minor flooding is forecast.
* Flood stage is 13.0 feet.
* Forecast...Rise above flood stage by Saturday April 21 and crest near 
  14.0 feet by Sunday April 22.
* 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

$$

IAC041-201953-
/O.EXT.KFSD.FL.W.0059.180422T1200Z-180426T1200Z/
/SPOI4.1.ER.180422T1200Z.180423T1200Z.180425T1200Z.NO/
1053 AM CDT Thu Apr 19 2018

The Flood Warning continues for
  The Ocheyedan River Near Spencer.
* from Sunday morning to Thursday April 26.
* At 09AM Thursday the stage was 5.8 feet.
* Minor flooding is forecast.
* Flood stage is 8.0 feet.
* Forecast...Rise above flood stage by Sunday April 22 and crest near 
  8.9 feet by Monday April 23.
* At stages near 9.5 feet...Significant amounts of pasture and other 
  farm land begin flooding. 

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

$$

IAC041-059-191623-
/O.CAN.KFSD.FL.W.0048.000000T0000Z-180419T1553Z/
/MIFI4.2.ER.180414T0621Z.180416T0200Z.180419T1338Z.NO/
1053 AM CDT Thu Apr 19 2018

The Flood Warning is cancelled for
  The Little Sioux River Near Milford.
* At 09AM Thursday the stage was 11.9 feet.
* Flood stage is 12.0 feet.
* Recent Activity...The river fell below flood stage earlier this
  morning.
* 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

$$

IAC041-201953-
/O.CON.KFSD.FL.W.0046.000000T0000Z-000000T0000Z/
/SPWI4.1.ER.180414T0415Z.180423T1800Z.000000T0000Z.NO/
1053 AM CDT Thu Apr 19 2018

The Flood Warning continues for
  The Little Sioux River At Spencer.
* until further notice.
* At 09AM Thursday the stage was 11.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Flood stage is 10.0 feet.
* Forecast...The river will crest near 12.7 feet by Monday April 23. 
* At stages near 14.0 feet...City sewers in Spencer can begin to back
  up. Highway 18 between Spencer and Dickens can start flooding if 
  flows on the tributary creeks are also very high. 

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

$$

IAC021-041-201953-
/O.CON.KFSD.FL.W.0047.000000T0000Z-000000T0000Z/
/LNNI4.1.ER.180418T0405Z.180425T1800Z.000000T0000Z.NO/
1053 AM CDT Thu Apr 19 2018

The Flood Warning continues for
  The Little Sioux River At Linn Grove.
* until further notice.
* At 10AM Thursday the stage was 18.2 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Flood stage is 18.0 feet.
* Forecast...The river will continue rising to near 19.3 feet by 
  Wednesday April 25. Additional rises may be possible thereafter.
* At stages near 20.0 feet...Significant flooding of agricultural 
  land begins along this entire stretch of the river. 

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

$$

IAC035-201953-
/O.EXT.KFSD.FL.W.0060.180422T0600Z-000000T0000Z/
/CHKI4.1.ER.180422T0600Z.180427T1200Z.000000T0000Z.NO/
1053 AM CDT Thu Apr 19 2018

The Flood Warning continues for
  The Little Sioux River At Cherokee.
* from late Saturday night until further notice.
* At 09AM Thursday the stage was 14.8 feet.
* Minor flooding is forecast.
* Flood stage is 17.0 feet.
* Forecast...Rise above flood stage by Sunday April 22 and crest near 
  17.6 feet by Friday April 27.
* At stages near 18.0 feet...Cherokee city park begins to flood on 
  the south bank of the river. 

&&
 
LAT...LON 4296 9543 4291 9539 4265 9557 4256 9569
          4256 9578 4270 9564

$$

MNC083-201953-
/O.CON.KFSD.FL.W.0064.180422T1600Z-180425T0000Z/
/MSHM5.1.ER.180422T1600Z.180423T0600Z.180424T0000Z.NO/
1053 AM CDT Thu Apr 19 2018

The Flood Warning continues for
  The Redwood River Near Marshall.
* from Sunday morning to Tuesday evening.
* At 09AM Thursday the stage was 10.0 feet.
* Minor flooding is forecast.
* Flood stage is 14.0 feet.
* Forecast...Rise above flood stage Sunday April 22 and crest near 
  14.5 feet on Monday April 23. The river is expected to fall back 
  below flood stage Monday night.
* At stages near 14.0 feet...There will be minor flooding of low 
  lying areas outside of Marshall. 

&&
 
LAT...LON 4436 9585 4441 9591 4453 9579 4453 9559
          4448 9559 4448 9572

$$

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

JAMES RIVER
FORS2    12.0    6.44 Thu 9 AM    13.6  Tue 7 PM 
JRMS2    17.0   12.89 Thu 10 AM   19.7  Thu 1 AM 
SCOS2    13.0   10.35 Thu 9 AM    15.4  Thu 1 AM 
YNNS2    12.0    6.99 Thu 10 AM   12.9  Thu 7 AM 

BIG SIOUX RIVER
BRKS2     9.0    7.79 Thu 10 AM   10.6  Mon 7 AM 
DERS2    12.0    9.04 Thu 10 AM   13.1  Mon 1 AM 
SFLS2    12.0   11.44 Thu 10 AM   13.7  Mon 1 AM 
HWDI4    20.5   19.59 Thu 9 AM    23.4  Tue 7 PM 
AKRI4    16.0   14.97 Thu 10 AM   18.0  Wed 7 AM 

FIRESTEEL CREEK
MTVS2     8.0    3.71 Thu 9 AM    10.1  Tue 7 AM 

VERMILLION RIVER
DVSS2    11.0   E7.20 Thu 7 AM    12.4  Wed 7 PM 
WKAS2    14.0   E8.40 Thu 7 AM    14.6  Thu 7 AM 

ROCK RIVER
RAPI4    13.0   10.62 Thu 10 AM   14.0  Sun 1 PM 

OCHEYEDAN RIVER
SPOI4     8.0    5.85 Thu 10 AM   8.9  Mon 7 AM  

LITTLE SIOUX RIVER
MIFI4    12.0   11.87 Thu 9 AM                     E12.8  Mon Apr 16
SPWI4    10.0   11.02 Thu 9 AM    12.7  Mon 1 PM    12.0  Mon Apr 16
LNNI4    18.0   18.20 Thu 10 AM   19.3  Wed 1 PM 
CHKI4    17.0   14.80 Thu 9 AM    17.6  Fri 7 AM 

REDWOOD RIVER
MSHM5    14.0   10.04 Thu 10 AM   14.5  Mon 1 AM 

MG
157 
WGUS83 KFSD 201555
FLSFSD
Flood Statement
National Weather Service Sioux Falls SD
1055 AM CDT Fri Apr 20 2018

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

  James River Near Forestburg
  James River At Mitchell
  James River Near Scotland
  James River Above Yankton
  Firesteel Creek Near Mount Vernon
  Vermillion River Near Davis
  Vermillion River Near Wakonda
  Big Sioux River Near Brookings
  Big Sioux River Near Dell Rapids
  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 At Spencer
  Little Sioux River At Linn Grove
  Little Sioux River At Cherokee
  Redwood River Near Marshall
 
.The following river forecasts include forecast precipitation through
tonight. Any additional future rains could affect the crest 
forecasts. 
 
As the snow pack from recent storms continues melting today and into
this weekend with mild temperatures, the runoff will cause significant
rises on the area rivers and streams. Some of this melting is occurring
a little faster than previously forecast, so the rises have been 
adjusted to happen faster and higher. Most flooding will only be in the
minor category, but a few may reach moderate.

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.

&&

SDC111-211955-
/O.EXT.KFSD.FL.W.0054.180423T1400Z-180428T0300Z/
/FORS2.1.ER.180423T1400Z.180425T0000Z.180427T0300Z.NO/
1055 AM CDT Fri Apr 20 2018

The Flood Warning continues for
  The James River Near Forestburg.
* From Monday morning to Friday April 27.
* At 9 AM Friday the stage was 7.3 feet.
* Minor flooding is forecast.
* Flood stage is 12.0 feet.
* At stages near 12.0 feet...Flooding begins over the left bank
  and a few county or township roads begin to flood. 

&&
 
LAT...LON 4420 9822 4420 9810 4402 9802 4393 9798
          4393 9812 4409 9816

$$

SDC035-061-211955-
/O.EXT.KFSD.FL.W.0055.180423T0400Z-000000T0000Z/
/JRMS2.1.ER.180423T0400Z.180426T0000Z.000000T0000Z.NO/
1055 AM CDT Fri Apr 20 2018

The Flood Warning continues for
  The James River At Mitchell.
* From Sunday evening until further notice.
* At 9 AM Friday the stage was 13.5 feet.
* Minor flooding is forecast.
* Flood stage is 17.0 feet.
* Forecast...Rise above flood stage by Sunday April 22 and continue 
  to rise to near 19.3 feet by Wednesday April 25. Additional rises 
  are possible thereafter.
* At stages near 20.0 feet...The higher banks overflow. 

&&
 
LAT...LON 4393 9812 4393 9798 4370 9789 4340 9763
          4338 9777 4351 9797

$$

SDC067-135-211955-
/O.EXT.KFSD.FL.W.0056.180421T0400Z-000000T0000Z/
/SCOS2.2.ER.180421T0400Z.180426T0000Z.000000T0000Z.NO/
1055 AM CDT Fri Apr 20 2018

The Flood Warning continues for
  The James River Near Scotland.
* From this evening until further notice.
* At 9 AM Friday the stage was 11.9 feet.
* Moderate flooding is forecast.
* Flood stage is 13.0 feet.
* Forecast...Rise above flood stage by Friday April 20 and continue 
  to rise to near 15.3 feet by Wednesday April 25. Additional rises 
  are possible thereafter.
* At stages near 15.5 feet...431st Avenue is flooded where it
  crosses the river in northwestern Yankton County. 

&&
 
LAT...LON 4338 9777 4340 9763 4321 9755 4308 9736
          4308 9750 4317 9769

$$

SDC135-211955-
/O.EXT.KFSD.FL.W.0061.180424T1800Z-000000T0000Z/
/YNNS2.1.ER.180424T1800Z.180427T1200Z.000000T0000Z.NO/
1055 AM CDT Fri Apr 20 2018

The Flood Warning continues for
  The James River Above Yankton.
* From Tuesday afternoon until further notice.
* At 10 AM Friday the stage was 7.9 feet.
* Minor flooding is forecast.
* Flood stage is 12.0 feet.
* Forecast...Rise above flood stage by Tuesday April 24 and continue 
  to rise to near 13.7 feet by Friday April 27. Additional rises are 
  possible thereafter.

&&
 
LAT...LON 4308 9750 4308 9736 4298 9731 4287 9722
          4287 9737 4298 9741

$$

SDC125-211955-
/O.EXT.KFSD.FL.W.0062.180423T0400Z-000000T0000Z/
/DVSS2.1.ER.180423T0400Z.180425T0000Z.000000T0000Z.NO/
1055 AM CDT Fri Apr 20 2018

The Flood Warning continues for
  The Vermillion River Near Davis.
* From Sunday evening until further notice.
* Flood stage is 11.0 feet.
* At stages near 12.0 feet...Highway 18 west of Davis will be
  flooded, and several houses in the western parts of Davis are
  in danger of flooding. 

&&
 
LAT...LON 4340 9710 4340 9704 4327 9696 4318 9689
          4310 9694 4310 9703

$$

SDC027-211955-
/O.CON.KFSD.FL.W.0063.180422T0430Z-000000T0000Z/
/WKAS2.2.ER.180422T0430Z.180427T0000Z.000000T0000Z.NO/
1055 AM CDT Fri Apr 20 2018

The Flood Warning continues for
  The Vermillion River Near Wakonda.
* From Saturday evening until further notice.
* At 7 AM Friday the stage was 10.9 (Estimated) feet.
* Moderate flooding is forecast.
* Flood stage is 14.0 feet.
* Forecast...Rise above flood stage by Saturday April 21 and
  continue to rise to near 15.5 feet by Thursday April 26.
  Additional rises are possible thereafter.
* At stages near 15.5 feet...Water reaches the bottom of the
  bridge on highway 19 near Lodi, and 306th Street near Hub City
  will flood, along with several other county roads. 

&&
 
LAT...LON 4310 9703 4310 9694 4291 9690 4291 9701
          4295 9700 4300 9704

$$

SDC011-101-211955-
/O.EXT.KFSD.FL.W.0049.180421T0600Z-000000T0000Z/
/BRKS2.2.ER.180421T0600Z.180423T0600Z.000000T0000Z.NO/
1055 AM CDT Fri Apr 20 2018

...Flood Warning extended until further notice... 
The Flood Warning continues for
  The Big Sioux River Near Brookings.
* From late tonight until further notice.
* At 9 AM Friday the stage was 8.2 feet.
* Moderate flooding is forecast.
* Flood stage is 9.0 feet.
* Forecast...Rise above flood stage by Saturday April 21 and
  continue to rise to near 10.8 feet by Monday April 23.
  Additional rises are possible thereafter.
* At stages near 11.0 feet...Some farm outbuildings begin to flood. 

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

$$

SDC099-101-211955-
/O.EXT.KFSD.FL.W.0050.180421T0800Z-000000T0000Z/
/DERS2.1.ER.180421T0800Z.180424T0000Z.000000T0000Z.NO/
1055 AM CDT Fri Apr 20 2018

...Flood Warning extended until further notice... 
The Flood Warning continues for
  The Big Sioux River Near Dell Rapids.
* From late tonight until further notice.
* At 9 AM Friday the stage was 10.1 feet.
* Minor flooding is forecast.
* Flood stage is 12.0 feet.
* Forecast...Rise above flood stage by Saturday April 21 and
  continue to rise to near 13.0 feet by Monday April 23.
  Additional rises are possible thereafter.
* At stages near 14.0 feet...Significant amounts of agricultural 
  lands are flooded through the basin. 

&&
 
LAT...LON 4394 9673 4394 9665 4379 9665 4379 9672
          4370 9672 4370 9679

$$

SDC099-211955-
/O.EXT.KFSD.FL.W.0051.180420T1524Z-000000T0000Z/
/SFLS2.1.ER.180420T1500Z.180423T1200Z.000000T0000Z.NO/
1055 AM CDT Fri Apr 20 2018

...Flood Warning extended until further notice... 
The Flood Warning continues for
  The Big Sioux River At Sioux Falls I-90.
* From this morning until further notice.
* At 10 AM Friday 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
  Friday April 20.
* Forecast...The river will continue rising to near 13.6 feet by 
  Monday April 23. Additional rises may be possible thereafter.
* 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-SDC127-211955-
/O.EXT.KFSD.FL.W.0052.180421T2200Z-000000T0000Z/
/HWDI4.1.ER.180421T2200Z.180424T1800Z.000000T0000Z.UU/
1055 AM CDT Fri Apr 20 2018

...Flood Warning extended until further notice... 
The Flood Warning continues for
  The Big Sioux River above Hawarden.
* From Saturday afternoon until further notice.
* At 9 AM Friday the stage was 19.8 feet.
* Minor flooding is forecast.
* Flood stage is 20.5 feet.
* Forecast...Rise above flood stage by Saturday April 21 and
  continue to rise to near 23.2 feet by Tuesday April 24.
  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-SDC127-211955-
/O.EXT.KFSD.FL.W.0053.180422T1200Z-000000T0000Z/
/AKRI4.2.ER.180422T1200Z.180425T1200Z.000000T0000Z.NO/
1055 AM CDT Fri Apr 20 2018

...Flood Warning extended until further notice... 
The Flood Warning continues for
  The Big Sioux River At Akron.
* From Sunday morning until further notice.
* At 10 AM Friday the stage was 15.4 feet.
* Moderate flooding is forecast.
* Flood stage is 16.0 feet.
* Forecast...Rise above flood stage by Sunday April 22 and
  continue to rise to near 18.0 feet by Wednesday April 25.
  Additional rises are possible thereafter.
* 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

$$

SDC035-211955-
/O.EXT.KFSD.FL.W.0057.180422T0730Z-180428T0900Z/
/MTVS2.1.ER.180422T0730Z.180424T0600Z.180427T0900Z.NO/
1055 AM CDT Fri Apr 20 2018

The Flood Warning continues for
  The Firesteel Creek Near Mount Vernon.
* From late Saturday night to Saturday April 28.
* At 9 AM Friday the stage was 3.9 feet.
* Minor flooding is forecast.
* Flood stage is 8.0 feet.

&&
 
LAT...LON 4383 9850 4392 9842 4381 9829 4379 9807
          4373 9805 4374 9831

$$

IAC119-211955-
/O.EXT.KFSD.FL.W.0058.180421T2230Z-180425T1200Z/
/RAPI4.1.ER.180421T2230Z.180423T0000Z.180424T1200Z.NO/
1055 AM CDT Fri Apr 20 2018

...Flood Warning extended until Wednesday April 25... 
The Flood Warning continues for
  The Rock River At Rock Rapids.
* From Saturday afternoon to Wednesday morning.
* At 9 AM Friday the stage was 10.7 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

$$

IAC041-211955-
/O.EXT.KFSD.FL.W.0059.180422T1030Z-180426T0900Z/
/SPOI4.1.ER.180422T1030Z.180423T1200Z.180425T0900Z.NO/
1055 AM CDT Fri Apr 20 2018

The Flood Warning continues for
  The Ocheyedan River Near Spencer.
* From late Saturday night to late Wednesday night.
* At 9 AM Friday the stage was 5.9 feet.
* Minor flooding is forecast.
* Flood stage is 8.0 feet.
* At stages near 9.5 feet...Significant amounts of pasture
  and other farm land begin flooding. 

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

$$

IAC041-211955-
/O.CON.KFSD.FL.W.0046.000000T0000Z-000000T0000Z/
/SPWI4.1.ER.180414T0415Z.180423T1800Z.000000T0000Z.NO/
1055 AM CDT Fri Apr 20 2018

The Flood Warning continues for
  The Little Sioux River At Spencer.
* Until further notice.
* At 9 AM Friday the stage was 11.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Flood stage is 10.0 feet.
* Forecast...The river will continue rising to near 12.7 feet
  by Monday April 23. Additional rises may be possible thereafter.
* At stages near 14.0 feet...City sewers in Spencer can begin
  to back up. Highway 18 between Spencer and Dickens can start
  flooding, if flows on the tributary creeks are also very high. 

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

$$

IAC021-041-211955-
/O.CON.KFSD.FL.W.0047.000000T0000Z-000000T0000Z/
/LNNI4.1.ER.180418T0405Z.180425T1200Z.000000T0000Z.NO/
1055 AM CDT Fri Apr 20 2018

The Flood Warning continues for
  The Little Sioux River At Linn Grove.
* Until further notice.
* At 10 AM Friday the stage was 18.2 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Flood stage is 18.0 feet.
* Forecast...The river will continue rising to near 19.1 feet by 
  Wednesday April 25. Additional rises may be 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

$$

IAC035-211955-
/O.EXT.KFSD.FL.W.0060.180423T0600Z-180426T0000Z/
/CHKI4.1.ER.180423T0600Z.180423T1800Z.180425T0000Z.NO/
1055 AM CDT Fri Apr 20 2018

The Flood Warning continues for
  The Little Sioux River At Cherokee.
* From late Sunday night to Wednesday evening.
* At 9 AM Friday the stage was 14.9 feet.
* Minor flooding is forecast.
* Flood stage is 17.0 feet.
* At stages near 17.0 feet...Minor lowland flooding begins, and 
  Cherokee County Rescue mobilizes and sets up the flood control 
  center. 

&&
 
LAT...LON 4296 9543 4291 9539 4265 9557 4256 9569
          4256 9578 4270 9564

$$

MNC083-211955-
/O.EXT.KFSD.FL.W.0064.180422T2230Z-180424T2100Z/
/MSHM5.1.ER.180422T2230Z.180423T0600Z.180423T2100Z.NO/
1055 AM CDT Fri Apr 20 2018

The Flood Warning continues for
  The Redwood River Near Marshall.
* From Sunday afternoon to Tuesday afternoon.
* At 9 AM Friday the stage was 10.5 feet.
* Minor flooding is forecast.
* Flood stage is 14.0 feet.
* At stages near 14.0 feet...There will be minor flooding of low 
  lying areas outside of Marshall. 

&&
 
LAT...LON 4436 9585 4441 9591 4453 9579 4453 9559
          4448 9559 4448 9572

$$

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

JAMES RIVER
FORS2    12.0    7.33 Fri 9 AM    12.9  Tue 7 PM
JRMS2    17.0   13.51 Fri 10 AM   19.3  Wed 7 PM
SCOS2    13.0   11.93 Fri 9 AM    15.3  Wed 7 PM
YNNS2    12.0    7.91 Fri 10 AM   13.7  Fri 7 AM

VERMILLION RIVER
DVSS2    11.0                     12.2  Tue 7 PM         
WKAS2    14.0   E10.90 Fri 7 AM   15.5  Thu 7 PM

BIG SIOUX RIVER
BRKS2     9.0    8.18 Fri 10 AM   10.8  Mon 1 AM
DERS2    12.0   10.05 Fri 10 AM   13.0  Mon 7 PM
SFLS2    12.0   12.00 Fri 10 AM   13.6  Mon 7 AM
HWDI4    20.5   19.83 Fri 9 AM    23.2  Tue 1 PM
AKRI4    16.0   15.43 Fri 10 AM   18.0  Wed 7 AM

FIRESTEEL CREEK
MTVS2     8.0    3.87 Fri 9 AM     9.9  Tue 1 AM

ROCK RIVER
RAPI4    13.0   10.72 Fri 9 AM    13.9  Sun 7 PM

OCHEYEDAN RIVER
SPOI4     8.0    5.95 Fri 10 AM    8.9  Mon 7 AM

LITTLE SIOUX RIVER
SPWI4    10.0   10.98 Fri 9 AM    12.7  Mon 1 PM
LNNI4    18.0   18.18 Fri 10 AM   19.1  Wed 7 AM
CHKI4    17.0   14.93 Fri 9 AM    17.1  Mon 1 PM

REDWOOD RIVER
MSHM5    14.0   10.51 Fri 10 AM   14.3  Mon 1 AM

TRM
517 
WGUS83 KFSD 211552
FLSFSD
Flood Statement
National Weather Service Sioux Falls SD
1052 AM CDT Sat Apr 21 2018

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

  Little Sioux River At Cherokee
...The Flood Warning continues for the following rivers in South 
Dakota...Iowa...Minnesota...

  James River Near Forestburg
  James River At Mitchell
  James River Near Scotland
  James River Above Yankton
  Firesteel Creek Near Mount Vernon
  Vermillion River Near Davis
  Vermillion River Near Wakonda
  Big Sioux River Near Bruce
  Big Sioux River Near Brookings
  Big Sioux River Near Dell Rapids
  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 Near Milford
  Little Sioux River At Spencer
  Little Sioux River At Linn Grove
  Split Rock Creek Below Jasper
  Redwood River Near Marshall
  
.The following river forecasts include forecast precipitation through
tonight. Any additional future rains could affect the crest 
forecasts. 
 
As the snow pack from recent storms continues melting today, through
the weekend, and into early next week, the runoff will cause significant
rises on the area rivers and streams. Most of the flooding will only
be in the minor category, but a few locations will reach moderate.
 
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.

&&

SDC111-221950-
/O.EXT.KFSD.FL.W.0054.180422T1700Z-180428T1000Z/
/FORS2.1.ER.180422T1700Z.180424T0000Z.180427T1000Z.NO/
1052 AM CDT Sat Apr 21 2018

...Flood Warning extended until Saturday April 28... 
The Flood Warning continues for
  The James River Near Forestburg.
* From Sunday afternoon to Saturday April 28.
* At 9 AM Saturday the stage was 9.5 feet.
* Minor flooding is forecast.
* Flood stage is 12.0 feet.
* At stages near 14.0 feet...Many of the county and township roads 
along the river are under water. 

&&
 
LAT...LON 4420 9822 4420 9810 4402 9802 4393 9798
          4393 9812 4409 9816

$$

SDC035-061-221950-
/O.EXT.KFSD.FL.W.0055.180422T2217Z-000000T0000Z/
/JRMS2.1.ER.180422T2217Z.180425T1800Z.000000T0000Z.NO/
1052 AM CDT Sat Apr 21 2018

The Flood Warning continues for
  The James River At Mitchell.
* From Sunday afternoon until further notice.
* At 9 AM Saturday the stage was 14.6 feet.
* Minor flooding is forecast.
* Flood stage is 17.0 feet.
* Forecast...Rise above flood stage by Sunday April 22 and continue 
  to rise to near 19.4 feet by Wednesday April 25. Additional rises 
  are possible thereafter.
* At stages near 20.0 feet...The higher banks overflow. 

&&
 
LAT...LON 4393 9812 4393 9798 4370 9789 4340 9763
          4338 9777 4351 9797

$$

SDC067-135-221950-
/O.CON.KFSD.FL.W.0056.000000T0000Z-000000T0000Z/
/SCOS2.2.ER.180422T0600Z.180426T0000Z.000000T0000Z.NO/
1052 AM CDT Sat Apr 21 2018

The Flood Warning continues for
  The James River Near Scotland.
* Until further notice.
* At 9 AM Saturday the stage was 12.5 feet.
* Moderate flooding is forecast.
* Flood stage is 13.0 feet.
* Forecast...Rise above flood stage by Sunday April 22 and continue 
  to rise to near 15.4 feet by Wednesday April 25. Additional rises 
  are possible thereafter.
* At stages near 15.5 feet...431st Avenue is flooded where it
  crosses the river in northwestern Yankton County. 

&&
 
LAT...LON 4338 9777 4340 9763 4321 9755 4308 9736
          4308 9750 4317 9769

$$

SDC135-221950-
/O.CON.KFSD.FL.W.0061.180425T0430Z-000000T0000Z/
/YNNS2.2.ER.180425T0430Z.180428T1200Z.000000T0000Z.NO/
1052 AM CDT Sat Apr 21 2018

The Flood Warning continues for
  The James River Above Yankton.
* From Tuesday evening until further notice.
* At 10 AM Saturday the stage was 8.5 feet.
* Moderate flooding is forecast.
* Flood stage is 12.0 feet.
* Forecast...Rise above flood stage by Tuesday April 24 and continue 
  to rise to near 14.2 feet by Saturday April 28. Additional rises 
  are possible thereafter.

&&
 
LAT...LON 4308 9750 4308 9736 4298 9731 4287 9722
          4287 9737 4298 9741

$$

SDC011-221950-
/O.CON.KFSD.FL.W.0066.000000T0000Z-000000T0000Z/
/BRCS2.1.ER.180421T0027Z.180421T1445Z.000000T0000Z.NO/
1052 AM CDT Sat Apr 21 2018

The Flood Warning continues for
  The Big Sioux River Near Bruce.
* Until further notice.
* At 9 AM Saturday the stage was 9.0 feet.
* Flood stage is 8.0 feet.
* At stages near 9.5 feet...The right bank overflows, flooding 
  agricultural lands for as much as 1/4 mile. 

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

$$

SDC011-101-221950-
/O.EXT.KFSD.FL.W.0049.000000T0000Z-180427T0900Z/
/BRKS2.2.ER.180421T1150Z.180423T1200Z.180426T0900Z.NO/
1052 AM CDT Sat Apr 21 2018

The Flood Warning continues for
  The Big Sioux River Near Brookings.
* Until late Thursday night.
* At 9 AM Saturday the stage was 9.1 feet.
* Minor flooding is occurring and Moderate flooding is forecast.
* Flood stage is 9.0 feet.
* Recent activity...The river rose above flood stage on Saturday 
  April 21.
* Forecast...The river will rise to 10.5 feet by Monday April 23.
* At stages near 10.3 feet...473rd Avenue north of the gage begins
  to flood. 

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

$$

SDC099-101-221950-
/O.EXT.KFSD.FL.W.0050.000000T0000Z-180427T0600Z/
/DERS2.1.ER.180421T1555Z.180423T0600Z.180426T0600Z.NO/
1052 AM CDT Sat Apr 21 2018

The Flood Warning continues for
  The Big Sioux River Near Dell Rapids.
* Until late Thursday night.
* At 9 AM Saturday the stage was 11.9 feet.
* Minor flooding is forecast.
* Flood stage is 12.0 feet.
* At stages near 12.0 feet...Agricultural lands along the lower
  banks of the river begin to flood. 

&&
 
LAT...LON 4394 9673 4394 9665 4379 9665 4379 9672
          4370 9672 4370 9679

$$

SDC099-221950-
/O.CON.KFSD.FL.W.0051.000000T0000Z-000000T0000Z/
/SFLS2.1.ER.180420T1500Z.180422T1800Z.000000T0000Z.NO/
1052 AM CDT Sat Apr 21 2018

The Flood Warning continues for
  The Big Sioux River At Sioux Falls I-90.
* Until further notice.
* At 10 AM Saturday the stage was 13.2 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Flood stage is 12.0 feet.
* Forecast...The river will continue rising to near 13.6 feet by 
  Sunday April 22. Additional rises may be possible thereafter.
* 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-SDC127-221950-
/O.EXT.KFSD.FL.W.0052.180421T1517Z-000000T0000Z/
/HWDI4.1.ER.180421T0645Z.180423T1800Z.000000T0000Z.UU/
1052 AM CDT Sat Apr 21 2018

The Flood Warning continues for
  The Big Sioux River above Hawarden.
* From this morning until further notice.
* At 9 AM Saturday the stage was 20.8 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Flood stage is 20.5 feet.
* Recent activity...The river rose above flood stage on Saturday 
  April 21.
* Forecast...The river will continue rising to near 23.2 feet by 
  Monday April 23. Additional rises may be 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-SDC127-221950-
/O.EXT.KFSD.FL.W.0053.180421T1517Z-000000T0000Z/
/AKRI4.2.ER.180421T1445Z.180424T1200Z.000000T0000Z.NO/
1052 AM CDT Sat Apr 21 2018

The Flood Warning continues for
  The Big Sioux River At Akron.
* From this morning until further notice.
* At 10 AM Saturday the stage was 16.0 feet.
* Minor flooding is occurring and Moderate flooding is forecast.
* Flood stage is 16.0 feet.
* Recent activity...The river rose above flood stage on Saturday 
  April 21.
* Forecast...The river will continue rising to near 18.2 feet by 
  Tuesday April 24. Additional rises may be possible thereafter.
* 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

$$

SDC035-221950-
/O.EXT.KFSD.FL.W.0057.180423T0000Z-180425T2100Z/
/MTVS2.1.ER.180423T0000Z.180423T1200Z.180424T2100Z.NO/
1052 AM CDT Sat Apr 21 2018

The Flood Warning continues for
  The Firesteel Creek Near Mount Vernon.
* From Sunday evening to Wednesday afternoon.
* At 9 AM Saturday the stage was 5.1 feet.
* Minor flooding is forecast.
* Flood stage is 8.0 feet.
* At stages near 8.0 feet...The right bank overflows. 

&&
 
LAT...LON 4383 9850 4392 9842 4381 9829 4379 9807
          4373 9805 4374 9831

$$

SDC125-221950-
/O.EXT.KFSD.FL.W.0062.180423T0000Z-180428T1500Z/
/DVSS2.1.ER.180423T0000Z.180424T1200Z.180427T1500Z.NO/
1052 AM CDT Sat Apr 21 2018

The Flood Warning continues for
  The Vermillion River Near Davis.
* From Sunday evening to Saturday April 28.
* Flood stage is 11.0 feet.
* At stages near 12.0 feet...Highway 18 west of Davis will begin
  flooding, and several houses in the western parts of Davis are
  in danger of flooding. 

&&
 
LAT...LON 4340 9710 4340 9704 4327 9696 4318 9689
          4310 9694 4310 9703

$$

SDC027-221950-
/O.CON.KFSD.FL.W.0063.180422T0430Z-000000T0000Z/
/WKAS2.1.ER.180422T0430Z.180426T1200Z.000000T0000Z.NO/
1052 AM CDT Sat Apr 21 2018

The Flood Warning continues for
  The Vermillion River Near Wakonda.
* From this evening until further notice.
* At 7 AM Saturday the stage was 12.7 (Estimated) feet.
* Minor flooding is forecast.
* Flood stage is 14.0 feet.
* Forecast...Rise above flood stage by Saturday April 21 and
  continue to rise to near 15.3 feet by Thursday April 26.
  Additional rises are possible thereafter.
* At stages near 15.5 feet...Water reaches the bottom of the
  bridge on highway 19 near Lodi, and 306th Street near
  Hub City will flood, along with several other county roads. 

&&
 
LAT...LON 4310 9703 4310 9694 4291 9690 4291 9701
          4295 9700 4300 9704

$$

MNC133-SDC099-221950-
/O.CON.KFSD.FL.W.0065.000000T0000Z-000000T0000Z/
/JSPM5.1.ER.180421T0221Z.180421T1415Z.000000T0000Z.NO/
1052 AM CDT Sat Apr 21 2018

The Flood Warning continues for
  The Split Rock Creek Below Jasper.
* Until further notice.
* At 9 AM Saturday the stage was 92.3 feet.
* Flood stage is 91.0 feet.
* Recent activity...The river rose above flood stage on
  Friday April 20.
* At stages near 91.0 feet...The lower banks on this stretch of
  the creek are overtopped. The low water crossing on 250th
  Street at the MN/SD state line is flooded. 

&&
 
LAT...LON 4390 9639 4384 9637 4377 9642 4372 9648
          4372 9654 4381 9649

$$

IAC119-221950-
/O.EXT.KFSD.FL.W.0058.180422T0130Z-180424T1800Z/
/RAPI4.1.ER.180422T0130Z.180422T1200Z.180423T1800Z.NO/
1052 AM CDT Sat Apr 21 2018

The Flood Warning continues for
  The Rock River At Rock Rapids.
* From this evening to Tuesday afternoon.
* At 6 AM Saturday the stage was 11.8 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

$$

IAC041-221950-
/O.EXT.KFSD.FL.W.0059.180422T0800Z-180426T1200Z/
/SPOI4.1.ER.180422T0800Z.180423T1200Z.180425T1200Z.NO/
1052 AM CDT Sat Apr 21 2018

...Flood Warning extended until Thursday April 26... 
The Flood Warning continues for
  The Ocheyedan River Near Spencer.
* From late tonight to Thursday morning.
* At 9 AM Saturday the stage was 6.6 feet.
* Minor flooding is forecast.
* Flood stage is 8.0 feet.
* At stages near 9.5 feet...Significant amounts of pasture
  and other farm land begin flooding. 

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

$$

IAC041-059-221950-
/O.CON.KFSD.FL.W.0067.000000T0000Z-000000T0000Z/
/MIFI4.1.ER.180421T0300Z.180421T1315Z.000000T0000Z.NO/
1052 AM CDT Sat Apr 21 2018

The Flood Warning continues for
  The Little Sioux River Near Milford.
* Until further notice.
* At 9 AM Saturday the stage was 12.2 feet.
* Flood stage is 12.0 feet.
* Recent activity...The river rose above flood stage on
  Friday April 20.
* 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

$$

IAC041-221950-
/O.CON.KFSD.FL.W.0046.000000T0000Z-000000T0000Z/
/SPWI4.1.ER.180414T0415Z.180423T1800Z.000000T0000Z.NO/
1052 AM CDT Sat Apr 21 2018

The Flood Warning continues for
  The Little Sioux River At Spencer.
* Until further notice.
* At 9 AM Saturday the stage was 11.3 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Flood stage is 10.0 feet.
* Forecast...The river will continue rising to near 12.6 feet
  by Monday April 23. Additional rises may be possible thereafter.
* At stages near 14.0 feet...City sewers in Spencer can begin to
  back up. Highway 18 between Spencer and Dickens can start
  flooding, if flows on the tributary creeks are also very high. 

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

$$

IAC021-041-221950-
/O.CON.KFSD.FL.W.0047.000000T0000Z-000000T0000Z/
/LNNI4.1.ER.180418T0405Z.180425T1200Z.000000T0000Z.NO/
1052 AM CDT Sat Apr 21 2018

The Flood Warning continues for
  The Little Sioux River At Linn Grove.
* Until further notice.
* At 10 AM Saturday the stage was 18.1 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Flood stage is 18.0 feet.
* Forecast...The river will continue rising to near 18.6 feet by 
  Wednesday April 25. Additional rises may be 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

$$

IAC035-211622-
/O.CAN.KFSD.FL.W.0060.000000T0000Z-180426T0000Z/
/CHKI4.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1052 AM CDT Sat Apr 21 2018

The Flood Warning is cancelled for
  The Little Sioux River At Cherokee.
* At 9 AM Saturday the stage was 15.1 feet.
* Flood stage is 17.0 feet.
* Forecast...The river will crest below flood stage at 16.2 feet 
  Tuesday April 24.
* At stages near 17.0 feet...Minor lowland flooding begins, and 
  Cherokee County Rescue mobilizes and sets up the flood control 
  center. 

&&
 
LAT...LON 4296 9543 4291 9539 4265 9557 4256 9569
          4256 9578 4270 9564

$$

MNC083-221950-
/O.EXT.KFSD.FL.W.0064.180424T0000Z-180425T0600Z/
/MSHM5.1.ER.180424T0000Z.180424T0000Z.180424T0600Z.NO/
1052 AM CDT Sat Apr 21 2018

...Flood Warning extended until Wednesday April 25... 
The Flood Warning continues for
  The Redwood River Near Marshall.
* From Monday evening to late Tuesday night.
* At 9 AM Saturday the stage was 11.3 feet.
* Flood stage is 14.0 feet.
* Forecast...The river is expected to rise to near flood stage
  Monday April 23.
* At stages near 14.0 feet...There will be minor flooding of low 
  lying areas outside of Marshall. 

&&
 
LAT...LON 4436 9585 4441 9591 4453 9579 4453 9559
          4448 9559 4448 9572

$$

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

JAMES RIVER
FORS2    12.0    9.51 Sat 9 AM    13.8  Mon 7 PM    
JRMS2    17.0   14.59 Sat 10 AM   19.4  Wed 1 PM    
SCOS2    13.0   12.48 Sat 9 AM    15.4  Wed 7 PM    
YNNS2    12.0    8.53 Sat 10 AM   14.2  Sat Apr 28  

BIG SIOUX RIVER
BRCS2     8.0    8.97 Sat 10 AM     
BRKS2     9.0    9.05 Sat 10 AM   10.5  Mon 7 AM    
DERS2    12.0   11.92 Sat 9 AM    12.7  Mon 1 AM    
SFLS2    12.0   13.24 Sat 10 AM   13.6  Sun 1 PM    
HWDI4    20.5   20.79 Sat 9 AM    23.2  Mon 1 PM    
AKRI4    16.0   16.01 Sat 10 AM   18.2  Tue 7 AM    

FIRESTEEL CREEK
MTVS2     8.0    5.14 Sat 10 AM    8.4  Mon 7 AM    

VERMILLION RIVER
DVSS2    11.0                     12.0  Tue 7 AM         
WKAS2    14.0   E12.70 Sat 7 AM   15.3  Thu 7 AM    

SPLIT ROCK CREEK
JSPM5    91.0   92.35 Sat 9 AM

ROCK RIVER
RAPI4    13.0   11.77 Sat 6 AM    13.6  Sun 7 AM    

OCHEYEDAN RIVER
SPOI4     8.0    6.60 Sat 10 AM    8.8  Mon 7 AM    

LITTLE SIOUX RIVER
MIFI4    12.0   12.17 Sat 9 AM
SPWI4    10.0   11.26 Sat 9 AM    12.6  Mon 1 PM    
LNNI4    18.0   18.12 Sat 10 AM   18.6  Wed 7 AM    
CHKI4    17.0   15.08 Sat 9 AM    16.2  Tue 7 AM    

REDWOOD RIVER
MSHM5    14.0   11.27 Sat 10 AM   14.0  Mon 7 PM    

TRM

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 18, 6:26 AM CDT, 3 hours 36 minutes earlier.

Area forecast discussion, Apr 18, 6:26 AM CDT, 3 hours 36 minutes before
Area Forecast Discussion
National Weather Service Sioux Falls SD
626 AM CDT Wed Apr 18 2018

.SHORT TERM...(Today and Tonight)
Issued at 425 AM CDT Wed Apr 18 2018

Complex forecast over the next 12 hours, as a compact shortwave
tracks east from northeast Nebraska across northern Iowa today.
High-res models all pointing to potential for a band of heavier
snow around the north side of the wave, but the question remains
exactly where this band will end up. 00Z models trended south with
the system, with decent consensus in placing the higher QPF/Snow
near and mainly south of I-90, with much lighter amounts in our
far northern CWA along the Highway 14 corridor. This solution
makes sense given relatively dry north-northeast low level flow
which could limit snowfall farther north. Made changes to our
headlines based on this idea, upgrading a portion of northwest
Iowa to a Winter Storm Warning where intense snowfall rates could
quickly produce an area of 6+ inches of snowfall. Also cancelled
the Winter Weather Advisory for the Highway 14 corridor, where the
model consensus suggested amounts would remain around 2 inches or
less.

Concern is that very strong lift early this morning could quickly
overcome the dry air, and in fact, 06Z NAM and more recent runs
of the HRRR/RAP have shifted the axis of heavy snow a county or
two northward again during the late morning-early afternoon, while
also lingering the chance of snow later into the afternoon along a
persistent low level boundary across the northeast half of the
forecast area. Will not jump on these changes now, but day shift
will certainly have to watch trends and adjust if necessary.

Snow should exit the area early-mid evening as the wave moves east
and subsidence takes over across the area.

.LONG TERM...(Thursday through Tuesday)
Issued at 425 AM CDT Wed Apr 18 2018

Surface high pressure and upper level ridge will bring quiet
weather to the region Thursday, while our next upper level system
tracks through the southern Rockies. Could see some very light
precipitation extend into the Northern Plains by Friday as the
upper low slides east into the southern/central Plains. However,
with the strongest lift well south of the region, and abundant dry
air in place as the surface high drifts east toward the Great
Lakes, precipitation (mainly light rain) will have a tough time
progressing east later Friday/Friday night. GFS hangs on to some
very light QPF into Saturday morning, but other models maintain
dry conditions Saturday and Sunday, which seems reasonable given
the position of the upper support well to our south. Temperatures
through the weekend are expected to gradually warm, though will
still be below normal for this time in April, hampered by any
lingering snow cover.

Northern stream wave and an associated cool front push into the
northern Plains late Monday, and could see some decent warming
ahead of the boundary on Monday. Did not make significant changes
to the consensus blend yet, as differences in timing could impact
the potential warming. But if current timing verifies, could see
widespread highs in the 60s on Monday. Scattered showers possible
along the boundary Monday night into Tuesday as it tracks across
the region, with temperatures Tuesday falling back below normal,
though still in the 50s for most areas.

&&

.AVIATION...(For the 12Z TAFS through 12Z Thursday morning)
Issued at 626 AM CDT Wed Apr 18 2018

Widespread low MVFR-IFR ceilings with IFR-LIFR visibility in snow
expected to start the period this morning. Snow will persist into
the afternoon, gradually ending with visibility improving during
the afternoon, though ceilings will largely remain MVFR-locally
IFR into the evening. The snow will exit southwest Minnesota and
northwest Iowa this evening, with VFR conditions expected to
prevail by the end of the period most areas. Some models do hint
at fog developing after 06Z, especially west of I-29. However,
confidence is not high enough to include at this time.

&&

.FSD WATCHES/WARNINGS/ADVISORIES...
SD...Winter Weather Advisory until 4 PM CDT this afternoon for
     SDZ053>056-060>062-066-067.

     Winter Weather Advisory until 1 PM CDT this afternoon for SDZ050-
     052-057>059-063>065-068>071.

MN...Winter Weather Advisory until 7 PM CDT this evening for MNZ080-
     081-089-090-097-098.

IA...Winter Weather Advisory until 4 PM CDT this afternoon for IAZ020-
     032.

     Winter Weather Advisory until 1 PM CDT this afternoon for IAZ031.

     Winter Storm Warning until 7 PM CDT this evening for IAZ002-003-
     013-014-021-022.

     Winter Weather Advisory until 7 PM CDT this evening for IAZ001-
     012.

NE...Winter Weather Advisory until 1 PM CDT this afternoon for NEZ013-
     014.

&&

SHORT TERM...JH
LONG TERM...JH
AVIATION...JH
Hazardous weather outlook, Apr 18, 4:50 AM CDT, 5 hours 12 minutes before
Hazardous Weather Outlook
National Weather Service Sioux Falls SD
450 AM CDT Wed Apr 18 2018

IAZ001-012-020-031-032-MNZ071-072-080-081-097-098-SDZ039-040-
054>056-061-062-066-067-070-071-191000-
Lyon IA-Sioux-Plymouth-Woodbury-Ida-Lincoln MN-Lyon MN-Murray-
Cottonwood-Pipestone-Rock-Kingsbury-Brookings-Miner-Lake-Moody-
McCook-Minnehaha-Turner-Lincoln SD-Clay SD-Union-
450 AM CDT Wed Apr 18 2018

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

.DAY ONE...Today and Tonight

Bands of moderate to occasionally heavy snow will impact the area
this morning, possibly mixing with or changing to rain before the
precipitation ends late this afternoon. Snowfall accumulations of
2 to 5 inches are expected, with lesser amounts toward Highway 14
and locally higher amounts possible near and south of Interstate
90.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

IAZ002-003-013-014-021-022-MNZ089-090-191000-
Osceola-Dickinson-O'Brien-Clay IA-Cherokee-Buena Vista-Nobles-
Jackson-
450 AM CDT Wed Apr 18 2018

This Hazardous Weather Outlook is for portions of northwest Iowa
and southwest Minnesota.

.DAY ONE...Today and Tonight

Band of moderate to occasionally heavy snow will impact the area
today, with snow diminishing this evening. Snowfall accumulations
of 5 to 7 inches are expected, with locally higher amounts
possible.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

NEZ013-014-SDZ038-050-052-053-057>060-063>065-068-069-191000-
Dixon-Dakota-Beadle-Gregory-Jerauld-Sanborn-Brule-Aurora-Davison-
Hanson-Charles Mix-Douglas-Hutchinson-Bon Homme-Yankton-
450 AM CDT Wed Apr 18 2018

This Hazardous Weather Outlook is for portions of northeast
Nebraska, central South Dakota, east central South Dakota, south
central South Dakota, and southeast South Dakota.

.DAY ONE...Today and Tonight

Light to moderate snow is expected across the area today, possibly
mixing with or changing to rain before ending this afternoon.
Additional accumulations of 1 to 4 inches are expected, with the
higher amounts from the lower James River Valley into northwest
Iowa.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

In the hours before

Local storm report, Apr 18, 7:55 AM CDT, 2 hours 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
755 AM CDT WED APR 18 2018

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

0700 AM     HEAVY SNOW       TYNDALL                 42.99N 97.86W
04/18/2018  M8.5 INCH        BON HOMME          SD   CO-OP OBSERVER

&&
Local storm report, Apr 18, 7:58 AM CDT, 2 hours 4 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
758 AM CDT WED APR 18 2018

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

0700 AM     HEAVY SNOW       ARMOUR                  43.32N 98.34W
04/18/2018  M8.0 INCH        DOUGLAS            SD   EMERGENCY MNGR

&&
Local storm report, Apr 18, 8:43 AM CDT, 1 hour 19 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
843 AM CDT WED APR 18 2018

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

0830 AM     HEAVY SNOW       5 ESE VERMILLION        42.75N 96.84W
04/18/2018  E8.5 INCH        CLAY               SD   PUBLIC

            REPORT VIA SOCIAL MEDIA.

&&
Local storm report, Apr 18, 9:02 AM CDT, 1 hour before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
902 AM CDT WED APR 18 2018

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

0800 AM     HEAVY SNOW       4 SSW PICKSTOWN         43.01N 98.56W
04/18/2018  M6.1 INCH        GREGORY            SD   CO-OP OBSERVER

&&

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 18, 2:59 AM CDTWinter Storm WarningFSDBuena Vista, Cherokee, Clay, Dickinson, O'Brien, Osceola15 hr
Apr 18, 2:59 AM CDTWinter Weather AdvisoryFSDLyon, Sioux15 hr
Apr 18, 10:02 AM CDTRiver Flood WarningFSDLyon7 days
Apr 18, 10:02 AM CDTRiver Flood WarningFSDClay7 days

Nearby

River Flood Warnings in Iowa, 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.