Alert archive / Iowa / River Flood Warnings in 2018

River Flood Warning 207, NWS Sioux Falls, SD

September 20, 2018O'Brien County, Iowa

NWS Sioux Falls, SD issued this river flood warning at Sep 20, 2018, 6:49 AM CDT for O'Brien County, Iowa. It was in force for 24 hr.

The area

The outline as issued.

The facts

Issued: Sep 20, 2018, 6:49 AM CDT (11:49 UTC)
Expired: Sep 21, 2018, 6:49 AM CDT
In force: 24 hr
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Flood severity: Minor

County O'Brien County, IA

The radar

The Sioux Falls radar (KFSD), 89 km from the middle of the area, began a volume at 11:51 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 Floyd River near Sanborn (LFSI4).

Action stage: 85 ft
Minor stage: 87 ft
Moderate stage: 93 ft
Major stage: 96 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06600030, 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.

778 
WGUS43 KFSD 201149
FLWFSD
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Sioux Falls SD
649 AM CDT Thu Sep 20 2018

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

  James River Near Scotland
  James River Above Yankton
  Vermillion River Near Davis
  Vermillion River Near Wakonda
  Big Sioux River Near Brookings
  Big Sioux River below Dell Rapids
  Big Sioux River At Sioux Falls I-90
  Big Sioux River At Sioux Falls North Cliff
  Big Sioux River above Hawarden
  Big Sioux River At Akron
  Split Rock Creek Near Corson
  Willow Creek Near Crooks
  Rock River At Rock Rapids
  Rock River At Rock Valley
  Burr Oak Creek near Perkins
  Little Floyd River near Sanborn
  Floyd River At Sheldon
  Floyd River At Alton
  Ocheyedan River Near Spencer
  Little Sioux River near Milford
  Little Sioux River at Spencer
  Little Sioux River At Linn Grove
  Waterman Creek near Sutherland
  Little Sioux River At Cherokee
 
.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.

&&

SDC011-101-211548-
/O.NEW.KFSD.FL.W.0195.180921T0824Z-180925T0430Z/
/BRKS2.2.ER.180921T0824Z.180922T0600Z.180924T0430Z.NO/
649 AM CDT Thu Sep 20 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Big Sioux River Near Brookings.
* from late tonight to Monday evening.
* At 06AM Thursday the stage was 4.46 feet.
* Moderate flooding is forecast.
* Flood stage is 9.00 feet.
* Forecast...Rise above flood stage by 3 AM Friday and crest near 
  10.7 feet by Saturday September 22. The river will fall below flood 
  stage by Sunday September 23.
* At stages near 11.0 feet...Some farm outbuildings begin to flood. 

&&
 
LAT...LON 4417 9678 4420 9675 4414 9659 4410 9658
          4410 9666 4411 9666

$$

SDC099-101-211548-
/O.NEW.KFSD.FL.W.0196.180921T1400Z-180924T0600Z/
/DERS2.1.ER.180921T1400Z.180922T0000Z.180923T0600Z.NO/
649 AM CDT Thu Sep 20 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Big Sioux River below Dell Rapids.
* from Friday morning to late Sunday night.
* At 03AM Thursday the stage was 5.37 feet.
* Minor flooding is forecast.
* Flood stage is 12.00 feet.
* Forecast...Rise above flood stage by 9 AM Friday and crest near 
  12.8 feet by Saturday September 22. The river will fall below flood 
  stage by Sunday September 23.
* At stages near 12.0 feet...Agricultural lands along the lower banks
  of the river begin to flood. 

&&
 
LAT...LON 4382 9674 4381 9672 4369 9671 4369 9676
          4373 9678 4379 9676

$$

SDC099-211548-
/O.NEW.KFSD.FL.W.0197.180922T0300Z-180923T1800Z/
/SFLS2.1.ER.180922T0300Z.180922T0600Z.180922T1800Z.NO/
649 AM CDT Thu Sep 20 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Big Sioux River At Sioux Falls I-90.
* from Friday evening to Sunday afternoon.
* At 06AM Thursday the stage was 8.90 feet.
* Minor flooding is forecast.
* Flood stage is 12.00 feet.
* Forecast...Rise above flood stage by 10 AM Friday and crest near 
  12.1 feet by Saturday September 22. The river will fall below flood 
  stage by Saturday September 22.
* At stages near 12.0 feet...Some agricultural land between 60th 
  Street North and Interstate 90 begins to flood. 

&&
 
LAT...LON 4369 9676 4369 9671 4362 9672 4358 9672
          4356 9672 4357 9674 4359 9673 4360 9675
          4363 9676

$$

IAC119-SDC083-099-211548-
/O.NEW.KFSD.FL.W.0198.180921T0515Z-180922T1500Z/
/SXFS2.1.ER.180921T0515Z.180921T1200Z.180921T1500Z.NO/
649 AM CDT Thu Sep 20 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Big Sioux River At Sioux Falls North Cliff.
* from late tonight to Saturday morning.
* At 05AM Thursday the stage was   11.03 feet.
* Minor flooding is forecast.
* Flood stage is   16.00 feet.
* Forecast...Rise above flood stage by 10 PM Thursday and crest near 
  16.3 feet by Friday September 21. The river will fall below flood 
  stage by late Friday.
* At stages near 16.0 feet...Rural flooding downstream of Sioux Falls
  begins, and the Glenwood Stable begins to flood. 

&&
 
LAT...LON 4356 9672 4358 9672 4358 9668 4359 9668
          4362 9664 4359 9665 4356 9667

$$

IAC149-167-SDC127-211548-
/O.NEW.KFSD.FL.W.0199.180920T2152Z-000000T0000Z/
/HWDI4.3.ER.180920T2152Z.180923T1200Z.000000T0000Z.UU/
649 AM CDT Thu Sep 20 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Big Sioux River above Hawarden.
* from this afternoon until further notice.
* At 05AM Thursday the stage was 16.98 feet.
* Major flooding is forecast.
* Flood stage is 20.50 feet.
* Forecast...Rise above flood stage by 5 PM Thursday and crest 
  near 27.6 feet by 7 AM Sunday.

&&
 
LAT...LON 4308 9654 4308 9641 4302 9646 4291 9649
          4291 9658

$$

IAC149-SDC127-211548-
/O.NEW.KFSD.FL.W.0200.180921T0527Z-000000T0000Z/
/AKRI4.3.ER.180921T0527Z.180924T0600Z.000000T0000Z.NO/
649 AM CDT Thu Sep 20 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Big Sioux River At Akron.
* from late tonight until further notice.
* At 06AM Thursday the stage was 10.94 feet.
* Major flooding is forecast.
* Flood stage is 16.00 feet.
* Forecast...Rise above flood stage by 12 AM Friday and crest
  near 21.3 feet by 1 AM Monday.
* At stages near 21.5 feet...Highway 48 near the intersection with 
  Iowa Highway 12 north of Akron begins to flood. 

&&
 
LAT...LON 4291 9658 4291 9649 4281 9654 4277 9659
          4278 9665

$$

IAC041-211548-
/O.NEW.KFSD.FL.W.0201.180920T1149Z-180924T0600Z/
/SPOI4.3.ER.180920T0812Z.180921T0000Z.180923T0600Z.NO/
649 AM CDT Thu Sep 20 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Ocheyedan River Near Spencer.
* until late Sunday night.
* At 05AM Thursday the stage was 9.73 feet.
* Moderate flooding is occurring and Major flooding is forecast.
* Flood stage is 8.00 feet.
* Forecast...The river will crest near 10.6 feet by 7 PM Thursday.
* At stages near 10.5 feet...Major agricultural flooding begins and 
  some county roads are also flooded. 

&&
 
LAT...LON 4313 9529 4317 9527 4314 9521 4314 9515
          4313 9515 4311 9520

$$

SDC067-135-211548-
/O.NEW.KFSD.FL.W.0202.180922T0234Z-180926T1200Z/
/SCOS2.2.ER.180922T0234Z.180923T1200Z.180925T1200Z.NO/
649 AM CDT Thu Sep 20 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The James River Near Scotland.
* from Friday evening to Wednesday morning.
* At 05AM Thursday the stage was 7.37 feet.
* Moderate flooding is forecast.
* Flood stage is 13.00 feet.
* Forecast...Rise above flood stage by 10 PM Friday and crest near 
  14.9 feet by Sunday September 23. The river will fall below flood 
  stage by Tuesday September 25.
* 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

$$

SDC135-211548-
/O.NEW.KFSD.FL.W.0203.180924T1048Z-180927T0900Z/
/YNNS2.1.ER.180924T1048Z.180925T0600Z.180926T0900Z.NO/
649 AM CDT Thu Sep 20 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The James River Above Yankton.
* from late Sunday night to Thursday September 27.
* At 06AM Thursday the stage was 4.92 feet.
* Minor flooding is forecast.
* Flood stage is 12.00 feet.
* Forecast...Rise above flood stage by Monday September 24 and crest near 
  12.9 feet by Tuesday September 25. The river will fall below flood 
  stage by Wednesday September 26.
* At stages near 12.0 feet...Significant agricultural flooding 
  begins. 

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

$$

IAC119-211548-
/O.NEW.KFSD.FL.W.0204.180920T1708Z-180923T1305Z/
/RAPI4.2.ER.180920T1708Z.180921T1200Z.180922T1305Z.NO/
649 AM CDT Thu Sep 20 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Rock River At Rock Rapids.
* from this afternoon to Sunday morning.
* At 05AM Thursday the stage was 11.62 feet.
* Moderate flooding is forecast.
* Flood stage is 13.00 feet.
* Forecast...Rise above flood stage by 12 PM Thursday and crest near 
  17.3 feet by Friday September 21. The river will fall below flood 
  stage by Saturday September 22.
* At stages near 16.0 feet...The higher banks on the left side of the
  river, and the lower banks on the right side, will begin flooding. 

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

$$

IAC119-167-211548-
/O.NEW.KFSD.FL.W.0205.180920T2332Z-180923T1245Z/
/RKVI4.2.ER.180920T2332Z.180921T1800Z.180922T1245Z.NO/
649 AM CDT Thu Sep 20 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Rock River At Rock Valley.
* from this evening to Sunday morning.
* At 06AM Thursday the stage was 12.66 feet.
* Moderate flooding is forecast.
* Flood stage is 16.00 feet.
* Forecast...Rise above flood stage by 7 PM Thursday and crest near 
  17.3 feet by Friday September 21. The river will fall below flood 
  stage by Saturday September 22.
* At stages near 16.0 feet...Significant amounts of agricultural 
  lands are flooded, and some rural roads are also threatened by high 
  water. 

&&
 
LAT...LON 4334 9625 4331 9618 4312 9636 4303 9647
          4314 9644 4325 9639

$$

IAC167-211548-
/O.NEW.KFSD.FL.W.0206.180920T1149Z-000000T0000Z/
/BOCI4.2.ER.180920T0756Z.180920T1100Z.000000T0000Z.NO/
649 AM CDT Thu Sep 20 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Burr Oak Creek near Perkins.
* until further notice.
* At 06AM Thursday the stage was 18.93 feet.
* Flood stage is 16.00 feet.
* At stages near 18.0 feet...Significant flooding of crop land 
  begins. 

&&
 
LAT...LON 4325 9625 4326 9618 4324 9614 4322 9616
          4324 9618 4324 9625

$$

IAC141-211548-
/O.NEW.KFSD.FL.W.0207.180920T1149Z-000000T0000Z/
/LFSI4.1.ER.180920T0720Z.180920T1000Z.000000T0000Z.NR/
649 AM CDT Thu Sep 20 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Little Floyd River near Sanborn.
* until further notice.
* At 05AM Thursday the stage was 89.30 feet.
* Flood stage is 87.00 feet.

&&
 
LAT...LON 4317 9587 4316 9581 4321 9570 4320 9567
          4315 9575 4315 9578 4314 9582 4315 9587

$$

IAC141-211548-
/O.NEW.KFSD.FL.W.0208.180920T1132Z-180922T0448Z/
/SHLI4.1.ER.180920T1132Z.180920T1800Z.180921T0448Z.NO/
649 AM CDT Thu Sep 20 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Floyd River At Sheldon.
* until Friday evening.
* At 05AM Thursday the stage was 10.57 feet.
* Minor flooding is forecast.
* Flood stage is 12.00 feet.
* Forecast...Rise above flood stage by 7 AM Thursday and crest near 
  13.5 feet by late afternoon. The river will fall below flood 
  stage by Friday September 21.
* At stages near 14.0 feet...Flooding affects large areas of farm 
  land within 1000 feet of the river. 

&&
 
LAT...LON 4325 9584 4326 9568 4324 9565 4322 9580
          4307 9589 4307 9596

$$

IAC167-211548-
/O.NEW.KFSD.FL.W.0209.180920T1149Z-180922T1744Z/
/ALTI4.2.ER.180920T0846Z.180921T0000Z.180921T1744Z.NO/
649 AM CDT Thu Sep 20 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Floyd River At Alton.
* until Saturday afternoon.
* At 06AM Thursday the stage was 14.12 feet.
* Minor flooding is occurring and Moderate flooding is forecast.
* Flood stage is 12.00 feet.
* Forecast...The river will crest near 17.1 feet by 7 PM Thursday.
* At stages near 18.0 feet...The entire flood plain is under water 
  and the river is about 1/2 mile wide. The flooding still primarily 
  only affects agricultural land. 

&&
 
LAT...LON 4307 9596 4307 9589 4299 9598 4291 9603
          4291 9610 4300 9603

$$

IAC041-059-211548-
/O.NEW.KFSD.FL.W.0210.180920T1149Z-180926T0130Z/
/MIFI4.2.ER.180920T0753Z.180921T0600Z.180925T0130Z.NO/
649 AM CDT Thu Sep 20 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Little Sioux River near Milford.
* until Tuesday evening.
* At 05AM Thursday the stage was 13.67 feet.
* Minor flooding is occurring and Moderate flooding is forecast.
* Flood stage is 12.00 feet.
* Forecast...The river will crest near 15.7 feet by 1 AM Friday.
* At stages near 15.5 feet...The bridge on 190th Avenue near 2430th 
  Street is overtopped, and 180th Street between 170th Avenue and 190th
  Avenue is flooded. 

&&
 
LAT...LON 4341 9527 4341 9521 4334 9520 4331 9515
          4321 9517 4321 9528 4330 9525

$$

IAC041-211548-
/O.NEW.KFSD.FL.W.0211.180920T1149Z-000000T0000Z/
/SPWI4.1.ER.180920T0758Z.180921T0000Z.000000T0000Z.NO/
649 AM CDT Thu Sep 20 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Little Sioux River at Spencer.
* until further notice.
* At 05AM Thursday the stage was 10.82 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Flood stage is 10.00 feet.
* Forecast...The river will crest near 13.8 feet by 7 PM
  Thursday.
* 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 4321 9528 4321 9517 4314 9503 4299 9503
          4302 9510 4310 9511 4314 9523

$$

IAC021-041-211548-
/O.NEW.KFSD.FL.W.0212.180920T1149Z-000000T0000Z/
/LNNI4.2.ER.180920T1111Z.180923T1200Z.000000T0000Z.NO/
649 AM CDT Thu Sep 20 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Little Sioux River At Linn Grove.
* until further notice.
* At 06AM Thursday the stage was 17.93 feet.
* Moderate flooding is forecast.
* Flood stage is 18.00 feet.
* Forecast...Rise above flood stage by 7 AM Thursday and crest 
  near 20.5 feet by 7 AM Sunday.
* 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

$$

IAC141-211548-
/O.NEW.KFSD.FL.W.0213.180920T1149Z-000000T0000Z/
/SWCI4.1.ER.180920T0824Z.180920T1100Z.000000T0000Z.UU/
649 AM CDT Thu Sep 20 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  Waterman Creek near Sutherland.
* until further notice.
* At 06AM Thursday the stage was 1238.11 feet.
* Flood stage is 1235.00 feet.
* At stages near 1239 feet...Significant flooding of crop land 
  begins. 

&&
 
LAT...LON 4301 9544 4301 9540 4299 9540 4298 9542
          4294 9541 4294 9543 4299 9545

$$

IAC035-211548-
/O.NEW.KFSD.FL.W.0214.180920T1448Z-000000T0000Z/
/CHKI4.1.ER.180920T1448Z.180924T1200Z.000000T0000Z.NO/
649 AM CDT Thu Sep 20 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Little Sioux River At Cherokee.
* from this morning until further notice.
* At 05AM Thursday the stage was 13.52 feet.
* Minor flooding is forecast.
* Flood stage is 17.00 feet.
* Forecast...Rise above flood stage by 10 AM Thursday and crest
  near 20.4 feet by 7 AM Monday. 
* At stages near 21.0 feet...Old Highway 5 East begins to flood, and 
  some homes, businesses, and roads in Cherokee begin flooding. 

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

$$

SDC125-211548-
/O.NEW.KFSD.FL.W.0215.180921T2200Z-180927T0300Z/
/DVSS2.1.ER.180921T2200Z.180923T1800Z.180926T0300Z.NO/
649 AM CDT Thu Sep 20 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Vermillion River Near Davis.
* from Friday afternoon to Wednesday evening.
* At 8 PM Wednesday the stage was estimated at 2.6 feet
* Flood stage is 11.00 feet.
* Forecast...Rise above flood stage by 6 PM Friday and crest near 
  12.6 feet by Sunday September 23.
* At stages near 13.0 feet...Moderate flooding of agricultural land 
  begins. 

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

$$

SDC027-211548-
/O.NEW.KFSD.FL.W.0216.180922T2145Z-180927T2136Z/
/WKAS2.1.ER.180922T2145Z.180925T0600Z.180926T2136Z.NO/
649 AM CDT Thu Sep 20 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Vermillion River Near Wakonda.
* from Saturday afternoon to Thursday September 27.
* At 07PM Wednesday the stage was estimated at 3.00 feet.
* Minor flooding is forecast.
* Flood stage is   14.00 feet.
* Forecast...Rise above flood stage by 5 PM Saturday and crest near 
  15.3 feet by Tuesday September 25. The river will fall below flood 
  stage by Wednesday September 26.
* 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

$$

SDC099-211548-
/O.NEW.KFSD.FL.W.0217.180921T0730Z-180922T2024Z/
/COSS2.1.ER.180921T0730Z.180921T1200Z.180921T2024Z.NO/
649 AM CDT Thu Sep 20 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Split Rock Creek Near Corson.
* from late tonight to Saturday afternoon.
* At 05AM Thursday the stage was 4.68 feet.
* Minor flooding is forecast.
* Flood stage is 8.50 feet.
* Forecast...Rise above flood stage by 2 AM Friday and crest near 
  8.8 feet later Friday morning. The river will fall below flood 
  stage by Friday evening.
* At stages near 9.0 feet...The parking lot at Badlands Motor 
  Speedway may be flooded. 

&&
 
LAT...LON 4372 9654 4372 9648 4362 9654 4358 9654
          4358 9661 4365 9661

$$

SDC099-211548-
/O.NEW.KFSD.FL.W.0218.180920T1149Z-000000T0000Z/
/WCCS2.1.ER.180920T1032Z.180920T1032Z.000000T0000Z.NO/
649 AM CDT Thu Sep 20 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  Willow Creek Near Crooks.
* until further notice.
* At 05AM Thursday the stage was 9.00 feet.
* Flood stage is 9.00 feet.
* At stages near 9.0 feet...The lower left banks overflow flooding 
  some pasture and hay land. 

&&
 
LAT...LON 4370 9685 4370 9683 4364 9681 4359 9681
          4361 9684 4369 9688

$$

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

BIG SIOUX RIVER
BRKS2       9.0      4.46 Thu 6 AM    10.7  Sat 1 AM 
DERS2      12.0      5.37 Thu 3 AM    12.8  Fri 7 PM 
SFLS2      12.0      8.90 Thu 6 AM    12.1  Sat 1 AM 
SXFS2      16.0     11.03 Thu 5 AM    16.2  Fri 7 AM 
HWDI4      20.5     16.98 Thu 5 AM    27.6  Sun 7 AM 
AKRI4      16.0     10.94 Thu 6 AM    21.3  Mon 1 AM 

OCHEYEDAN RIVER
SPOI4       8.0      9.73 Thu 6 AM    10.6  Thu 7 PM 

JAMES RIVER
SCOS2      13.0      7.37 Thu 5 AM    14.9  Sun 7 AM 
YNNS2      12.0      4.92 Thu 6 AM    12.9  Tue 1 AM 

ROCK RIVER
RAPI4      13.0     11.62 Thu 5 AM    17.3  Fri 7 AM 
RKVI4      16.0     12.66 Thu 6 AM    17.3  Fri 1 PM 
BOCI4      16.0     18.93 Thu 6 AM                        18.9  Thu Sep 20

FLOYD RIVER
LFSI4      87.0     89.30 Thu 5 AM                        89.4  Thu Sep 20
SHLI4      12.0     10.57 Thu 5 AM    13.5  Thu 1 PM 
ALTI4      12.0     14.12 Thu 6 AM    17.1  Thu 7 PM 

LITTLE SIOUX RIVER
MIFI4      12.0     13.67 Thu 5 AM    15.7  Fri 1 AM 
SPWI4      10.0     10.82 Thu 5 AM    13.8  Thu 7 PM 
LNNI4      18.0     17.93 Thu 6 AM    20.5  Sun 7 AM 
SWCI4    1235.0   1238.11 Thu 6 AM                      1238.1  Thu Sep 20
CHKI4      17.0     13.52 Thu 5 AM    20.4  Mon 7 AM 

VERMILLION RIVER
DVSS2      11.0     E2.60 Wed 8 PM    12.6  Sun 1 PM 
WKAS2      14.0     E3.00 Wed 7 PM    15.3  Tue 1 AM 

SPLIT ROCK CREEK
COSS2       8.5      4.68 Thu 6 AM     8.8  Fri 7 AM

SKUNK CREEK
WCCS2       9.0      9.00 Thu 6 AM                         9.0  Thu Sep 20

MG

1 follow-up statement

424 
WGUS83 KFSD 202051
FLSFSD
Flood Statement
National Weather Service Sioux Falls SD
351 PM CDT Thu Sep 20 2018

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

  Missouri River Near Greenwood
  Little Floyd River near Sanborn

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

  Missouri River Near Verdel
  Missouri River At Niobrara
  Missouri River At Springfield
  James River Near Scotland
  James River Above Yankton
  Vermillion River Near Davis
  Vermillion River Near Wakonda
  Vermillion River Near Vermillion
  Willow Creek Near Crooks
  Big Sioux River Near Brookings
  Big Sioux River below Dell Rapids
  Big Sioux River At Sioux Falls I-90
  Big Sioux River At Sioux Falls Western Avenue
  Big Sioux River At Sioux Falls North Cliff
  Big Sioux River at Brandon
  Big Sioux River near Canton
  Big Sioux River above Hawarden
  Big Sioux River At Akron
  Pipestone Creek at Pipestone
  Split Rock Creek Below Jasper
  Split Rock Creek Near Corson
  Rock River At Luverne
  Rock River At Rock Rapids
  Rock River At Rock Valley
  Burr Oak Creek near Perkins
  Floyd River At Sheldon
  Floyd River At Alton
  West Branch Floyd River Near Struble
  Floyd River At Le Mars
  Floyd River At Merrill
  Ocheyedan River near Everly
  Ocheyedan River Near Spencer
  Little Sioux River near Milford
  Little Sioux River at Spencer
  Little Sioux River At Linn Grove
  Waterman Creek near Sutherland
  Little Sioux River At Cherokee
  Little Sioux River Near Correctionville
  Willow Creek near Willow Creek near Cornell
  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.

&&

IAC141-202121-
/O.CAN.KFSD.FL.W.0207.000000T0000Z-180920T2051Z/
/LFSI4.1.ER.180920T0720Z.180920T1000Z.180920T1615Z.NR/
351 PM CDT Thu Sep 20 2018

The Flood Warning is cancelled for
  The Little Floyd River near Sanborn.
* At 02PM Thursday the stage was 86.32 feet.
* Flood stage is 87.00 feet.
* At stages near 87.0 feet...Ditches fill and minor flooding of crop 
  and pasture land begins. 

&&
 
LAT...LON 4317 9587 4316 9581 4321 9570 4320 9567
          4315 9575 4315 9578 4314 9582 4315 9587

$$

IAC141-220050-
/O.EXT.KFSD.FL.W.0208.000000T0000Z-180922T0824Z/
/SHLI4.1.ER.180920T1209Z.180920T1715Z.180921T0824Z.NO/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The Floyd River At Sheldon.
* until late Friday night.
* At 02PM Thursday the stage was 13.03 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Flood stage is 12.00 feet.
* Recent activity...The river rose above flood stage and crest at 
  13.3 feet on Thursday September 20.
* Forecast...The river will continue to fall to below flood stage by 
  Friday September 21.
* At stages near 12.0 feet...Agricultural flooding begins. 

&&
 
LAT...LON 4325 9584 4326 9568 4324 9565 4322 9580
          4307 9589 4307 9596

$$

IAC167-220050-
/O.CON.KFSD.FL.W.0209.000000T0000Z-180923T0440Z/
/ALTI4.3.ER.180920T0846Z.180921T0000Z.180922T0440Z.NR/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The Floyd River At Alton.
* until Saturday evening.
* At 03PM Thursday the stage was 20.14 feet.
* Major flooding is occurring and Record flooding is forecast.
* Flood stage is 12.00 feet.
* Recent activity...The river rose above flood stage on Thursday 
  September 20.
* Forecast...The river will crest near 20.5 feet this evening.

&&
 
LAT...LON 4307 9596 4307 9589 4299 9598 4291 9603
          4291 9610 4300 9603

$$

IAC149-167-220050-
/O.EXT.KFSD.FL.W.0221.000000T0000Z-180923T0015Z/
/STUI4.2.ER.180920T1156Z.180921T0600Z.180922T0015Z.NR/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The West Branch Floyd River Near Struble.
* until Saturday evening.
* At 02PM Thursday the stage was 14.93 feet.
* Minor flooding is occurring and Moderate flooding is forecast.
* Flood stage is 14.00 feet.
* Recent activity...The river rose above flood stage on Thursday 
  September 20.
* Forecast...The river will crest near 15.5 feet by Friday September 21.
* At stages near 16.0 feet...County roads begin to flood. 

&&
 
LAT...LON 4296 9622 4296 9616 4285 9617 4274 9622
           4274 9626 4286 9622

$$

IAC149-220050-
/O.EXT.KFSD.FL.W.0222.180921T0123Z-180923T1536Z/
/LMRI4.2.ER.180921T0123Z.180921T1200Z.180922T1536Z.NO/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The Floyd River At Le Mars.
* from this evening to Sunday morning.
* At 02PM Thursday the stage was 18.37 feet.
* Moderate flooding is forecast.
* Flood stage is 20.00 feet.
  Willow Creek near Willow Creek near Cornell
* Forecast...The river will crest near 22.6 feet by Friday September 21.
* At stages near 22.0 feet...Approximately 1400 acres of farm land 
  are flooded. 

&&
 
LAT...LON 4291 9610 4291 9603 4282 9614 4275 9618
          4275 9623 4282 9620

$$

IAC149-220050-
/O.EXT.KFSD.FL.W.0219.180921T0947Z-180923T1434Z/
/MRLI4.2.ER.180921T0947Z.180922T0000Z.180922T1434Z.NO/
351 PM CDT Thu Sep 20 2018

...Flood Warning extended until Sunday September 23... 
The Flood Warning continues for
  The Floyd River At Merrill.
* from late tonight to Sunday morning.
* At 01PM Thursday the stage was estimated at 6.60 feet.
* Moderate flooding is forecast.
* Flood stage is 12.00 feet.
* Forecast...The river will crest near 14.2 feet by Friday September 21.
* At stages near 14.0 feet...Approximately 1600 acres of farm land 
  are flooded. 

&&
 
LAT...LON 4275 9623 4275 9618 4269 9624 4263 9627
          4263 9631 4272 9627

$$

SDC125-220050-
/O.CON.KFSD.FL.W.0215.180921T0207Z-180925T0600Z/
/DVSS2.2.ER.180921T0207Z.180921T1800Z.180924T0600Z.NO/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The Vermillion River Near Davis.
* from this evening to late Monday night.
* At 01PM Thursday the stage was 9.60 feet.
* Moderate flooding is forecast.
* Flood stage is 11.00 feet.
* Forecast...The river will crest near 13.7 feet by Friday September 21.
* At stages near 13.5 feet...Water reaches the bottom of the bridge 1
  mile west of Davis on Highway 18. 

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

$$

SDC027-220050-
/O.CON.KFSD.FL.W.0216.180921T0712Z-180928T0105Z/
/WKAS2.3.ER.180921T0712Z.180923T0000Z.180927T0105Z.NR/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The Vermillion River Near Wakonda.
* from late tonight to Thursday September 27.
* At 07AM Thursday the stage was estimated at 3.00 feet.
* Major flooding is forecast.
* Flood stage is 14.00 feet.
* Forecast...The river will crest near 17.4 feet by Sunday September 23.
* At stages near 17.5 feet...The bridge on 304th Street west of 
  Dalesburg is overtopped. 

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

$$

SDC027-220050-
/O.CON.KFSD.FL.W.0228.180923T0417Z-180928T0400Z/
/VERS2.2.ER.180923T0417Z.180924T1800Z.180927T0400Z.NO/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The Vermillion River Near Vermillion.
* from Saturday evening to Thursday September 27.
* At 02PM Thursday the stage was 8.82 feet.
* Moderate flooding is forecast.
* Flood stage is 21.00 feet.
* Forecast...The river will crest near 26.9 feet by Monday September 24.
* At stages near 26.0 feet...The bridge on North Crawford Avenue 
  northeast of the gauge is overtopped 

&&
 
LAT...LON 4291 9701 4291 9690 4285 9686 4278 9689
          4273 9684 4274 9696

$$

SDC011-101-220050-
/O.EXT.KFSD.FL.W.0195.180921T1330Z-180925T1800Z/
/BRKS2.2.ER.180921T1330Z.180922T1200Z.180924T1800Z.NO/
351 PM CDT Thu Sep 20 2018

...Flood Warning extended until Tuesday September 25... 
The Flood Warning continues for
  The Big Sioux River Near Brookings.
* from Friday morning to Tuesday afternoon.
* At 02PM Thursday the stage was 5.09 feet.
* Moderate flooding is forecast.
* Flood stage is 9.00 feet.
* Forecast...The river will crest near 10.6 feet by Saturday September 21.
* At stages near 10.3 feet...473rd Avenue north of the gauge begins 
  to flood. 

&&
 
LAT...LON 4417 9678 4420 9675 4414 9659 4410 9658
          4410 9666 4411 9666

$$

SDC099-101-220050-
/O.EXT.KFSD.FL.W.0196.180921T0618Z-180924T0336Z/
/DERS2.2.ER.180921T0618Z.180921T1800Z.180923T0336Z.NO/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The Big Sioux River below Dell Rapids.
* from late tonight to Sunday evening.
* At 02PM Thursday the stage was 7.00 feet.
* Moderate flooding is forecast.
* Flood stage is 12.00 feet.
* Forecast...The river will crest near 14.3 feet by Friday September 21.
* At stages near 14.5 feet...250th Street west of Baltic is flooded, 
  Park Road in Dell Rapids is flooded, and some homes and businesses 
  along 1st Avenue in Dell Rapids are flooded. 

&&
 
LAT...LON 4382 9674 4381 9672 4369 9671 4369 9676
          4373 9678 4379 9676

$$

SDC099-220050-
/O.EXT.KFSD.FL.W.0197.180921T0936Z-180923T1648Z/
/SFLS2.1.ER.180921T0936Z.180921T1800Z.180922T1648Z.NO/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The Big Sioux River At Sioux Falls I-90.
* from late tonight to Sunday morning.
* At 03PM Thursday the stage was 9.36 feet.
* Minor flooding is forecast.
* Flood stage is 12.00 feet.
* Forecast...The river will crest near 13.4 feet by Friday September 21.
* At stages near 12.0 feet...Some agricultural land between 60th 
  Street North and Interstate 90 begins to flood. 

&&
 
LAT...LON 4369 9676 4369 9671 4362 9672 4358 9672
          4356 9672 4357 9674 4359 9673 4360 9675
          4363 9676

$$

SDC083-099-220050-
/O.CON.KFSD.FL.W.0220.000000T0000Z-000000T0000Z/
/WAVS2.1.ER.180920T1149Z.180920T1646Z.000000T0000Z.NO/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The Big Sioux River At Sioux Falls Western Avenue.
* until further notice.
* At 03PM Thursday the stage was 10.44 feet.
* Flood stage is 8.00 feet.
* Recent activity...The river rose above flood stage and crested at 
  10.8 feet on Thursday September 20.
* At stages near 10.0 feet...City parks in southern Sioux Falls begin
  to have significant flooding. 

&&
 
LAT...LON 4352 9678 4353 9676 4350 9675 4352 9671
          4353 9670 4355 9673 4357 9672 4356 9672
          4355 9672 4353 9669 4352 9669 4349 9675
          4350 9676

$$

IAC119-SDC083-099-220050-
/O.EXT.KFSD.FL.W.0198.180921T0054Z-180923T2200Z/
/SXFS2.2.ER.180921T0054Z.180921T1800Z.180922T2200Z.NO/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The Big Sioux River At Sioux Falls North Cliff.
* from this evening to Sunday afternoon.
* At 02PM Thursday the stage was 13.57 feet.
* Moderate flooding is forecast.
* Flood stage is 16.00 feet.
* Forecast...The river will crest near 19.6 feet by Friday September 21.

&&
 
LAT...LON 4356 9672 4358 9672 4358 9668 4359 9668
          4362 9664 4359 9665 4356 9667

$$

IAC119-SDC099-220050-
/O.CON.KFSD.FL.W.0230.000000T0000Z-000000T0000Z/
/BBSS2.1.ER.180920T1527Z.180920T2000Z.000000T0000Z.UU/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The Big Sioux River at Brandon.
* until further notice.
* At 03PM Thursday the stage was 1205.06 feet.
* Flood stage is 1204.00 feet.
* Recent activity...The river rose above flood stage on Thursday 
  September 20.
* At stages near 1204 feet...Significant flooding of crop and pasture
  land begins. Access to the north end of the Big Sioux Recreation Area
  on the west side of Brandon is limited. 

&&
 
LAT...LON 4359 9665 4362 9664 4360 9657 4345 9656
          4338 9646 4339 9658 4343 9662 4358 9662

$$

IAC119-167-SDC083-220050-
/O.CON.KFSD.FL.W.0231.000000T0000Z-000000T0000Z/
/CBSS2.1.ER.180920T1705Z.180920T2000Z.000000T0000Z.NO/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The Big Sioux River near Canton.
* until further notice.
* At 03PM Thursday the stage was 1235.87 feet.
* Flood stage is 1235.00 feet.
* Recent activity...The river rose above flood stage on Thursday 
  September 20.
* At stages near 1235 feet...Flooding begins to affect crop and 
  pasture land. 

&&
 
LAT...LON 4339 9658 4338 9648 4327 9648 4327 9652
          4324 9652 4320 9652 4321 9661
          4332 9660 4331 9656

$$

IAC149-167-SDC127-220050-
/O.EXT.KFSD.FL.W.0199.180920T2010Z-000000T0000Z/
/HWDI4.3.ER.180920T1534Z.180923T1800Z.000000T0000Z.UU/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The Big Sioux River above Hawarden.
* from this afternoon until further notice.
* At 02PM Thursday the stage was   22.06 feet.
* Minor flooding is occurring and Major flooding is forecast.
* Flood stage is   20.50 feet.
* Recent activity...The river rose above flood stage on Thursday 
  September 20.
* Forecast...The river will crest near 28.9 feet by Sunday 
  September 23. 

&&
 
LAT...LON 4308 9654 4308 9641 4302 9646 4291 9649
          4291 9658

$$

IAC149-SDC127-220050-
/O.EXT.KFSD.FL.W.0200.180920T2249Z-000000T0000Z/
/AKRI4.3.ER.180920T2249Z.180924T0600Z.000000T0000Z.NO/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The Big Sioux River At Akron.
* until further notice.
* At 03PM Thursday the stage was 14.32 feet.
* Major flooding is forecast.
* Flood stage is 16.00 feet.
* Forecast...Rise above flood stage by Thursday September 20 and 
  crest near 22.1 feet by Monday September 24. 
* At stages near 22.0 feet...Highway 48 begins to flood where the 
  railroad tracks cross. 

&&
 
LAT...LON 4291 9658 4291 9649 4281 9654 4277 9659
          4278 9665

$$

IAC041-220050-
/O.EXT.KFSD.FL.W.0201.000000T0000Z-180925T1000Z/
/SPOI4.3.ER.180920T0812Z.180921T0600Z.180924T1000Z.NR/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The Ocheyedan River Near Spencer.
* until late Monday night.
* At 03PM Thursday the stage was 11.44 feet.
* Major flooding is occurring and Major flooding is forecast.
* Flood stage is 8.00 feet.
* Forecast...The river will crest near 12.0 feet by Friday September 21.
* At stages near 12.5 feet...Water reaches the bottom of the bridge 
  north of the Ocheyedan WMA. 

&&
 
LAT...LON 4313 9529 4317 9527 4314 9521 4314 9515
          4313 9515 4311 9520

$$

IAC041-141-220050-
/O.CON.KFSD.FL.W.0223.000000T0000Z-000000T0000Z/
/OREI4.1.ER.180920T1257Z.180920T1945Z.000000T0000Z.UU/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The Ocheyedan River near Everly.
* until further notice.
* At 02PM Thursday the stage was 1364.51 feet.
* Flood stage is 1364.00 feet.
* Recent activity...The river rose above flood stage on Thursday 
  September 20.
* At stages near 1364 feet...Ditches fill, the lowest banks overflow,
  and minor flooding of agricultural land begins. 

&&
 
LAT...LON 4324 9542 4324 9537 4318 9534 4317 9527
          4313 9529 4316 9539

$$

IAC041-059-220050-
/O.EXT.KFSD.FL.W.0210.000000T0000Z-000000T0000Z/
/MIFI4.2.ER.180920T0753Z.180921T0600Z.000000T0000Z.NO/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The Little Sioux River near Milford.
* until further notice.
* At 02PM Thursday the stage was 15.47 feet.
* Moderate flooding is occurring and Moderate flooding is forecast.
* Flood stage is 12.00 feet.
* Recent activity...The river rose above flood stage on Thursday 
  September 20.
* Forecast...The river will crest near 15.9 feet by Friday
  September 21. 
* At stages near 16.0 feet...170th Avenue south of Highway 9 is 
  flooded. 

&&
 
LAT...LON 4341 9527 4341 9521 4334 9520 4331 9515
          4321 9517 4321 9528 4330 9525

$$

IAC041-220050-
/O.CON.KFSD.FL.W.0211.000000T0000Z-000000T0000Z/
/SPWI4.2.ER.180920T0758Z.180921T0600Z.000000T0000Z.NO/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The Little Sioux River at Spencer.
* until further notice.
* At 02PM Thursday the stage was 13.70 feet.
* Minor flooding is occurring and Moderate flooding is forecast.
* Flood stage is 10.00 feet.
* Recent activity...The river rose above flood stage on Thursday 
  September 20.
* Forecast...The river will crest near 14.6 feet by Friday
  September 21.
* At stages near 14.5 feet...County Road B40 southeast of Spencer 
  begins flooding. 

&&
 
LAT...LON 4321 9528 4321 9517 4314 9503 4299 9503
          4302 9510 4310 9511 4314 9523

$$

IAC041-220050-
/O.CON.KFSD.FL.W.0224.000000T0000Z-000000T0000Z/
/CWCI4.2.ER.180920T1256Z.180920T1900Z.000000T0000Z.NR/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The Willow Creek near Willow Creek near Cornell.
* until further notice.
* At 02PM Thursday the stage was 94.14 feet.
* Flood stage is 90.00 feet.
* Recent activity...The river rose above flood stage on Thursday 
  September 20.
* At stages near 94.0 feet...The higher banks overtop and significant
  flooding of crop and pasture land begins. 

&&
 
LAT...LON 4300 9521 4297 9512 4296 9512 4297 9520
          4298 9521

$$

IAC021-041-220050-
/O.CON.KFSD.FL.W.0212.000000T0000Z-000000T0000Z/
/LNNI4.3.ER.180920T1206Z.180923T0600Z.000000T0000Z.NO/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The Little Sioux River At Linn Grove.
* until further notice.
* At 03PM Thursday the stage was 18.34 feet.
* Minor flooding is occurring and Major flooding is forecast.
* Flood stage is 18.00 feet.
* Recent activity...The river rose above flood stage on Thursday 
  September 20.
* Forecast...The river will crest near 21.9 feet by Sunday 
  September 23.

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

$$

IAC141-220050-
/O.CON.KFSD.FL.W.0213.000000T0000Z-000000T0000Z/
/SWCI4.3.ER.180920T0824Z.180920T1745Z.000000T0000Z.UU/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The Waterman Creek near Sutherland.
* until further notice.
* At 02PM Thursday the stage was 1241.38 feet.
* Flood stage is 1235.00 feet.
* Recent activity...The river rose above flood stage and 
  crested at 1242.3 feet on Thursday September 20.
* At stages near 1241 feet...470th Street will begin flooding. 

&&
 
LAT...LON 4301 9544 4301 9540 4299 9540 4298 9542
          4294 9541 4294 9543 4299 9545

$$

IAC035-220050-
/O.CON.KFSD.FL.W.0214.000000T0000Z-000000T0000Z/
/CHKI4.2.ER.180920T1550Z.180921T1800Z.000000T0000Z.NO/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The Little Sioux River At Cherokee.
* until further notice.
* At 02PM Thursday the stage was 19.08 feet.
* Minor flooding is occurring and Moderate flooding is forecast.
* Flood stage is 17.00 feet.
* Recent activity...The river rose above flood stage on Thursday 
  September 20.
* Forecast...The river will crest near 22.9 feet by Friday 
  September 21.
* At stages near 23.0 feet...Some areas in the extreme southeast 
  corner of Cherokee will begin to flood. 

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

$$

IAC193-220050-
/O.EXT.KFSD.FL.W.0225.180923T1434Z-180925T1600Z/
/CRRI4.1.ER.180923T1434Z.180924T0000Z.180924T1600Z.NO/
351 PM CDT Thu Sep 20 2018

...Flood Warning extended until Tuesday September 25... 
The Flood Warning continues for
  The Little Sioux River Near Correctionville.
* from Sunday morning to Tuesday morning.
* At 03PM Thursday the stage was 10.25 feet.
* Minor flooding is forecast.
* Flood stage is 19.00 feet.
* Forecast...The river will crest near 19.8 feet by Sunday September 23.
* At stages near 19.0 feet...Significant amounts of agricultural land
  are flooded. 

&&
 
LAT...LON 4256 9578 4256 9569 4233 9586 4221 9590
          4221 9598 4236 9592

$$

SDC067-135-220050-
/O.EXT.KFSD.FL.W.0202.180920T2123Z-180925T1800Z/
/SCOS2.2.ER.180920T2123Z.180922T1200Z.180924T1800Z.NO/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The James River Near Scotland.
* until Tuesday afternoon.
* At 02PM Thursday the stage was 12.64 feet.
* Moderate flooding is forecast.
* Flood stage is 13.00 feet.
* Forecast...The river will crest near 15.4 feet by Saturday September 22.
* 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

$$

SDC135-220050-
/O.CON.KFSD.FL.W.0203.180921T0224Z-180927T0336Z/
/YNNS2.2.ER.180921T0224Z.180923T0600Z.180926T0336Z.NO/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The James River Above Yankton.
* from this evening to Wednesday evening.
* At 03PM Thursday the stage was 9.75 feet.
* Moderate flooding is forecast.
* Flood stage is 12.00 feet.
* Forecast...The river will crest near 15.1 feet by Sunday September 23.
* At stages near 16.0 feet...SW Jim River Road near 301st Street 
  floods. 

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

$$

MNC133-SDC099-220050-
/O.CON.KFSD.FL.W.0227.000000T0000Z-000000T0000Z/
/JSPM5.1.ER.180920T1303Z.180920T1915Z.000000T0000Z.NO/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The Split Rock Creek Below Jasper.
* until further notice.
* At 02PM Thursday the stage was 93.63 feet.
* Flood stage is 91.00 feet.
* Recent activity...The river rose above flood stage on Thursday 
  September 20.

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

$$

SDC099-220050-
/O.CON.KFSD.FL.W.0217.000000T0000Z-180923T1400Z/
/COSS2.2.ER.180920T1858Z.180921T1200Z.180922T1400Z.NO/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The Split Rock Creek Near Corson.
* until Sunday morning.
* At 02PM Thursday the stage was 8.85 feet.
* Minor flooding is occurring and Moderate flooding is forecast.
* Flood stage is 8.50 feet.
* Recent activity...The river rose above flood stage on Thursday 
  September 20.
* Forecast...The river will crest near 11.5 feet by Friday September 21.
* At stages near 11.0 feet...The nursery near the mouth of Split Rock
  Creek begins flooding if the Big Sioux River is high enough to cause 
  a backwater effect. 

&&
 
LAT...LON 4372 9654 4372 9648 4362 9654 4358 9654
          4358 9661 4365 9661

$$

IAC119-MNC133-220050-
/O.EXT.KFSD.FL.W.0226.180920T2347Z-180922T1708Z/
/LUVM5.1.ER.180920T2347Z.180921T0600Z.180921T1708Z.NO/
351 PM CDT Thu Sep 20 2018

...Flood Warning extended until Saturday September 22... 
The Flood Warning continues for
  The Rock River At Luverne.
* from this evening to Saturday afternoon.
* At 02PM Thursday the stage was 5.73 feet.
* Minor flooding is forecast.
* Flood stage is 10.00 feet.
* Forecast...The river will crest near 10.8 feet tonight.
* At stages near 10.0 feet...Significant agricultural flooding 
  begins. 

&&
 
LAT...LON 4371 9622 4370 9611 4360 9616 4350 9614
          4350 9625 4363 9625

$$

IAC119-220050-
/O.EXT.KFSD.FL.W.0204.000000T0000Z-180923T2209Z/
/RAPI4.2.ER.180920T1447Z.180921T1800Z.180922T2209Z.NO/
351 PM CDT Thu Sep 20 2018

...Flood Warning extended until Sunday September 23... 
The Flood Warning continues for
  The Rock River At Rock Rapids.
* until Sunday afternoon.
* At 02PM Thursday the stage was 15.27 feet.
* Minor flooding is occurring and Moderate flooding is forecast.
* Flood stage is 13.00 feet.
* Recent activity...The river rose above flood stage on Thursday 
  September 20.
* Forecast...The river will crest near 18.4 feet by Friday September 21.
* At stages near 19.0 feet...The highest banks on the right side of 
  the river will be overtopped. 

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

$$

IAC119-167-220050-
/O.EXT.KFSD.FL.W.0205.180920T2156Z-180924T0246Z/
/RKVI4.2.ER.180920T2156Z.180921T1800Z.180923T0246Z.NO/
351 PM CDT Thu Sep 20 2018

...Flood Warning extended until Sunday September 23... 
The Flood Warning continues for
  The Rock River At Rock Valley.
* until Sunday evening.
* At 03PM Thursday the stage was 15.62 feet.
* Moderate flooding is forecast.
* Flood stage is 16.00 feet.
* Forecast...The river will crest near 18.1 feet by Friday September 21.
* At stages near 19.0 feet...Rock Valley begins to experience flood 
  problems and sandbagging of storm sewers in the city begins. 

&&
 
LAT...LON 4334 9625 4331 9618 4312 9636 4303 9647
          4314 9644 4325 9639

$$

IAC167-220050-
/O.CON.KFSD.FL.W.0206.000000T0000Z-000000T0000Z/
/BOCI4.2.ER.180920T0756Z.180920T1215Z.000000T0000Z.NO/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The Burr Oak Creek near Perkins.
* until further notice.
* At 03PM Thursday the stage was 18.13 feet.
* Flood stage is 16.00 feet.
* Recent Activity...the river crested at 19.2 feet.
* At stages near 18.0 feet...Significant flooding of crop land 
  begins. 

&&
 
LAT...LON 4325 9625 4326 9618 4324 9614 4322 9616
          4324 9618 4324 9625

$$

NEC015-SDC023-202121-
/O.CAN.KFSD.FL.W.0188.000000T0000Z-180920T2051Z/
/GRWS2.1.ER.180824T0345Z.180919T0830Z.180920T1903Z.NO/
351 PM CDT Thu Sep 20 2018

The Flood Warning is cancelled for
  The Missouri River Near Greenwood.
* At 02PM Thursday the stage was 29.97 feet.
* Flood stage is 30.00 feet.
* Forecast...The river will likely rise back above flood stage 
  by the middle of next week as releases from Fort Randall Dam 
  are increased again.
* At stages near 30.0 feet...Flooding begins to affect significant 
  amounts of agricultural land. 

&&
 
LAT...LON 4304 9859 4309 9854 4296 9844 4291 9830
          4286 9831 4293 9849

$$

NEC107-SDC009-023-220050-
/O.CON.KFSD.FL.W.0189.000000T0000Z-000000T0000Z/
/MRVN1.1.ER.180824T1322Z.180905T0800Z.000000T0000Z.NO/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The Missouri River Near Verdel.
* until further notice.
* At 02PM Thursday the stage was 24.23 feet.
* Flood stage is 24.00 feet.
* At stages near 25.0 feet...Boat docks at Lazy River Acres near 
  Verdel will be flooded and some homes will be surrounded by water. 

&&
 
LAT...LON 4286 9831 4291 9830 4284 9810 4279 9811
          4282 9816 4285 9825

$$

NEC107-SDC009-220050-
/O.CON.KFSD.FL.W.0173.000000T0000Z-000000T0000Z/
/MRNN1.1.ER.180709T0030Z.180729T1715Z.000000T0000Z.NO/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The Missouri River At Niobrara.
* until further notice.
* At 02PM Thursday the stage was 22.18 feet.
* Flood stage is 21.00 feet.
* At stages near 22.0 feet...Bottom Road near Springfield floods. 

&&
 
LAT...LON 4279 9811 4284 9810 4279 9801 4282 9795
          4278 9790 4274 9801

$$

NEC107-SDC009-220050-
/O.CON.KFSD.FL.W.0172.000000T0000Z-000000T0000Z/
/SPGS2.1.ER.180708T1903Z.180920T1915Z.000000T0000Z.NO/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The Missouri River At Springfield.
* until further notice.
* At 02PM Thursday the stage was 11.84 feet.
* Flood stage is 10.00 feet.
* At stages near 12.0 feet...Some camping areas at Springfield 
  Recreational Area will be flooded. 

&&
 
LAT...LON 4278 9790 4282 9795 4287 9791 4288 9784
          4283 9783 4281 9788

$$

MNC117-220050-
/O.CON.KFSD.FL.W.0232.000000T0000Z-000000T0000Z/
/PIPM5.1.ER.180920T1740Z.180920T1930Z.000000T0000Z.NO/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The Pipestone Creek at Pipestone.
* until further notice.
* At 02PM Thursday the stage was 16.61 feet.
* Flood stage is 16.00 feet.
* Recent activity...The river rose above flood stage on Thursday 
  September 20.
* At stages near 16.0 feet...The lower left bank overflows. 

&&
 
LAT...LON 4402 9640 4404 9636 4404 9629 4397 9630
          4397 9634 4400 9634 4402 9640

$$

SDC099-220050-
/O.CON.KFSD.FL.W.0218.000000T0000Z-000000T0000Z/
/WCCS2.1.ER.180920T1032Z.180920T1916Z.000000T0000Z.NO/
351 PM CDT Thu Sep 20 2018

The Flood Warning continues for
  The Willow Creek Near Crooks.
* until further notice.
* At 02PM Thursday the stage was 10.82 feet.
* Flood stage is 9.00 feet.
* Recent activity...The river rose above flood stage on Thursday 
  September 20.
* At stages near 11.0 feet...The higher banks overflow flooding 
  significant amounts of pasture land and some crop land. 

&&
 
LAT...LON 4370 9685 4370 9683 4364 9681 4359 9681
          4361 9684 4369 9688

$$

MNC083-220050-
/O.EXT.KFSD.FL.W.0229.180921T1200Z-180923T1800Z/
/MSHM5.1.ER.180921T1200Z.180922T0000Z.180922T1800Z.NO/
351 PM CDT Thu Sep 20 2018

...Flood Warning extended until Sunday September 23... 
The Flood Warning continues for
  The Redwood River Near Marshall.
* from Friday morning to Sunday afternoon.
* At 02PM Thursday the stage was 11.03 feet.
* Minor flooding is forecast.
* Flood stage is 14.00 feet.
* Forecast...The river will crest near 14.8 feet by Friday September 21.
* 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

FLOYD RIVER
LFSI4      87.0     86.32 Thu 2 PM                        89.4  Thu Sep 20
SHLI4      12.0     13.03 Thu 2 PM                        13.3  Thu Sep
20
ALTI4      12.0     20.14 Thu 3 PM    20.5  Thu 7 PM    
STUI4      14.0     14.93 Thu 2 PM    15.5  Fri 1 AM    
LMRI4      20.0     18.37 Thu 2 PM    22.6  Fri 7 AM    
MRLI4      12.0     E6.60 Thu 1 PM    14.2  Fri 7 PM    

VERMILLION RIVER
DVSS2      11.0      9.60 Thu 2 PM    13.7  Fri 1 PM    
WKAS2      14.0     E3.00 Thu 7 AM    17.3  Sat 7 PM    
VERS2      21.0      8.82 Thu 3 PM    26.9  Mon 1 PM    

BIG SIOUX RIVER
BRKS2       9.0      5.09 Thu 3 PM    10.6  Sat 7 AM    
DERS2      12.0      7.00 Thu 2 PM    14.3  Fri 1 PM    
SFLS2      12.0      9.36 Thu 3 PM    13.4  Fri 1 PM    
WAVS2       8.0     10.44 Thu 3 PM                        10.8  Thu Sep 20
SXFS2      16.0     13.57 Thu 2 PM    19.6  Fri 1 PM    
BBSS2    1204.0   1205.06 Thu 3 PM                      1204.7  Thu Sep 20
CBSS2    1235.0   1235.87 Thu 3 PM                      1235.0  Thu Sep 20
HWDI4      20.5     22.06 Thu 2 PM    28.9  Sun 1 PM    
AKRI4      16.0     14.32 Thu 3 PM    22.1  Mon 1 AM    

OCHEYEDAN RIVER
SPOI4       8.0     11.44 Thu 3 PM    12.0  Fri 1 AM    
OREI4    1364.0   1364.51 Thu 3 PM                      1364.4  Thu Sep 20

LITTLE SIOUX RIVER
MIFI4      12.0     15.47 Thu 2 PM    15.9  Fri 1 AM    
SPWI4      10.0     13.70 Thu 2 PM    14.6  Fri 1 AM    
CWCI4      90.0     94.14 Thu 2 PM                        94.1  Thu Sep 20
LNNI4      18.0     18.34 Thu 3 PM    21.9  Sun 1 AM    
SWCI4    1235.0   1241.38 Thu 3 PM                      1242.2  Thu Sep 20
CHKI4      17.0     19.08 Thu 2 PM    22.9  Fri 1 PM    
CRRI4      19.0     10.25 Thu 3 PM    19.8  Sun 7 PM    

JAMES RIVER
SCOS2      13.0     12.64 Thu 2 PM    15.3  Sat 7 AM    
YNNS2      12.0      9.75 Thu 3 PM    15.1  Sun 1 AM    

SPLIT ROCK CREEK
JSPM5      91.0     93.63 Thu 2 PM                        93.4  Thu Sep 20
COSS2       8.5      8.85 Thu 3 PM    11.5  Fri 7 AM    

ROCK RIVER
LUVM5      10.0      5.73 Thu 2 PM    10.8  Fri 1 AM    
20
RAPI4      13.0     15.27 Thu 2 PM    18.4  Fri 1 PM    
RKVI4      16.0     15.62 Thu 3 PM    18.1  Fri 1 PM    
BOCI4      16.0     18.13 Thu 3 PM                        19.2  Thu Sep 20

MISSOURI RIVER
GRWS2      30.0     29.97 Thu 2 PM                        30.5  Wed Sep 19
MRVN1      24.0     24.23 Thu 2 PM                        24.2  Thu Sep 20
MRNN1      21.0     22.18 Thu 2 PM                        22.2  Thu Sep 20
SPGS2      10.0     11.84 Thu 2 PM                        11.9  Thu Sep 20  

PIPESTONE CREEK
PIPM5      16.0     16.61 Thu 2 PM                        16.0  Thu Sep 20

SKUNK CREEK
WCCS2       9.0     10.82 Thu 3 PM                        10.8  Thu Sep 20

REDWOOD RIVER
MSHM5      14.0     11.03 Thu 3 PM    14.8  Fri 7 PM    

MG

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 Sep 20, 4:00 AM CDT, 2 hours 49 minutes earlier.

Area forecast discussion, Sep 20, 4:00 AM CDT, 2 hours 49 minutes before

Area Forecast Discussion
National Weather Service Sioux Falls SD
400 AM CDT Thu Sep 20 2018

.SHORT TERM...(Today and Tonight)
Issued at 359 AM CDT Thu Sep 20 2018

Current surface analysis shows low pressure over southwest NE, with
an attendant warm front extending northeastward to just south of
Sioux City. Aloft, a strong short wave is moving eastward across the
forecast area at this time over an upper ridge of high pressure
centered over the Gulf Coast states. We have very strong low level
frontogenesis maximized in the 925-850mb layer extending in a band
from south central SD, northeastward into the southern sections of
southwest MN. The rainfall continues to develop along and north of
this frontogenetic area along the shear axis/warm front at 925-
850mb. A constant low level jet feed is noted into the
frontogenesis, therefore the strongest rainfall rates continue to
move across extreme southeast SD and far northwest IA where the low
level jet is not impeded due to a lack of convection to the south.
The low level jet is currently pretty strong at 40 knots helping to
keep thetae advection persisting through the early morning hours. In
addition, our forecast area is squarely placed in a strong right
entrance region of a 135 knot jet streak to the northeast over
northeast MN and Lake Superior. All of these features slowly wane
between 12Z and 18Z as the short wave departs through southwest MN.
Therefore high pops are warranted through the early morning hours
where the rain is occurring now. That said, the hourly rainfall
rates will continue to drop off as they have been the past few
hours.

We will monitor trends, but we may be able to kill off the flash
flood watch for areas north of I 90 by daybreak if rainfall rates
continue to decrease, or we do not hear any reports of flash
flooding. However will have to leave the southern portion of the
watch going where the low level jet is not impeded, generally along
and south of I 90. But again none of this is written in stone yet.

The aforementioned surface low will lift northeastward in a path
close to Lake Andes SD to De Smet SD. This scenario will pivot the
warm front northward in our eastern zones, and the south to
southwest winds will become quite windy in northwest IA and the
southern parts of southwest MN. As the warm front pivots northward,
along with weakening frontogenesis, the rainfall in the northern
parts of northwest IA will gradually decrease as this morning
progresses, similar to what is happening right now in our far
southern zones. This will allow northwest IA and extreme northeast
NE to warm up into the 80s, compared with lower 60s from Huron to
Chamberlain SD.

For severe weather, conditions do look rather unsettled in the mid
to late afternoon in our extreme eastern zones, roughly from Windom
MN to the eastern portions of Woodbury County. Pre convective
sounding at a point between Spencer and Storm Lake IA at 21Z off the
NAM12 shows a rather unidirectional profile out of the southwest
suggesting a multicellular regime. But low level frontogenesis
rebuilds along the cold front as it marches eastward with yet
another short wave moving eastward this afternoon across our
northern zones. Effective cape in that area is near 2000 J/kg with 0-
3km cape forecast to be between 100-150 J/kg. This fact, coupled
with 50-60 knots at 6km producing strong speed shear, will mention
the risk of a tornado in our extreme east in the forthcoming EHWO.
With 0-3km cape that high and LCL's around 3000 feet, a tornado
could be of a landspout variety, and the surface to 3km lapse rate is
over 8 degrees. Whatever happens, it will exit quickly, with not much
activity remaining after 00Z when the cold front plows through.
Lastly, boosted winds both ahead of the front and behind the front
across the forecast area well above superblend values.

.LONG TERM...(Friday through Wednesday)
Issued at 359 AM CDT Thu Sep 20 2018

Freely admit due to the current weather, did not have a lot of time
to peruse over the extended portion of the forecast. It will be
breezy Friday morning, then the weekend will see a quasi-zonal flow
regime with nice weather. Another well advertised upper trough moves
into the plains early next week with a cold front passage Monday
afternoon and evening. There will be some chances for a few showers
and storms but the exact timing is a bit uncertain as the GFS is a
fair amount quicker then the ECMWF. After this upper trough moves
through, the flow aloft becomes decidedly northwest with the usual
timing discrepancies between the various models of short waves
moving down the northwest flow aloft. There is consensus however of
another strong cold frontal passage next Wednesday night.

&&

.AVIATION...(For the 06Z TAFS through 06Z Thursday night)
Issued at 1244 AM CDT Thu Sep 20 2018

Widespread MVFR-IFR ceilings with rain and embedded thunderstorms
will persist into Thursday, with exception of far southern areas
around KSUX-KSLB-KSPW where drier air will build northward behind
an elevated warm front. Most widespread activity is expected to
wane by late morning/midday, though scattered stronger storms will
be possible along a cold front which pushes east across the region
through the afternoon.

&&

.FSD WATCHES/WARNINGS/ADVISORIES...
SD...Flash Flood Watch until 1 PM CDT this afternoon for SDZ040-
     054>056-059>071.

MN...Flash Flood Watch until 1 PM CDT this afternoon for MNZ071-072-
     080-081-089-090-097-098.

IA...Flash Flood Watch until 1 PM CDT this afternoon for IAZ001>003-
     012>014-020>022.

NE...None.
&&

SHORT TERM...MJ
LONG TERM...MJ
AVIATION...JH

Hazardous weather outlook, Sep 20, 5:14 AM CDT, 1 hour 35 minutes before

Hazardous Weather Outlook
National Weather Service Sioux Falls SD
514 AM CDT Thu Sep 20 2018

IAZ002-003-012>014-020>022-031-032-MNZ081-089-090-211015-
Osceola-Dickinson-Sioux-O'Brien-Clay IA-Plymouth-Cherokee-
Buena Vista-Woodbury-Ida-Cottonwood-Nobles-Jackson-
514 AM CDT Thu Sep 20 2018

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

.DAY ONE...Today and Tonight

As a cold front moves through, severe weather is a threat in the
mid to late afternoon hours. The primary threats are hail up to
the size of ping pong balls, 70 mph winds, and isolated tornadoes.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is likely between 3 pm and 6 pm.

IAZ001-MNZ071-072-080-097-098-NEZ013-014-SDZ040-056-062-067-070-
071-211015-
Lyon IA-Lincoln MN-Lyon MN-Murray-Pipestone-Rock-Dixon-Dakota-
Brookings-Moody-Minnehaha-Lincoln SD-Clay SD-Union-
514 AM CDT Thu Sep 20 2018

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

.DAY ONE...Today and Tonight

Rainfall with embedded thunderstorms will occur today. In the
early to mid afternoon hours, an isolated storm may be marginally
severe, but most activity will be below severe limits. What is
more of a danger is locally heavy rainfall, especially this
morning. Be aware that some county and township roads have flooded
especially south of Interstate 90.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed but flooding or rainfall
reports are welcome.

SDZ038-039-050-052>055-057>061-063>066-068-069-211015-
Beadle-Kingsbury-Gregory-Jerauld-Sanborn-Miner-Lake-Brule-Aurora-
Davison-Hanson-McCook-Charles Mix-Douglas-Hutchinson-Turner-
Bon Homme-Yankton-
514 AM CDT Thu Sep 20 2018

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

.DAY ONE...Today and Tonight

Rainfall with embedded thunderstorms will occur today. Severe
weather is not expected, but locally heavy rainfall can occur with
an additional one to one and a half inches of rain possible in
some locations through the day. Be aware that flash flooding may
occur over county and township roads this morning, especially
south of Interstate 90.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed however rainfall or flooding
reports are welcome.

In the hours before

Local storm report, Sep 20, 5:00 AM CDT, 1 hour 49 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
500 AM CDT THU SEP 20 2018

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

0445 AM     FLASH FLOOD      3 WNW EVERLY            43.18N 95.38W
09/20/2018                   CLAY               IA   EMERGENCY MNGR

            HIGHWAY 18 NEAR THE CLAY, OBRIEN COUNTY LINE
            IS UNDERWATER. CURRENTLY BARRICADING.

&&

Local storm report, Sep 20, 5:47 AM CDT, 1 hour 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
547 AM CDT THU SEP 20 2018

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

0545 AM     FLASH FLOOD      LENNOX                  43.35N 96.89W
09/20/2018                   LINCOLN            SD   PUBLIC

            FLASH FLOODING IN LENNOX WITH PICTURES VIA
            SOCIAL MEDIA. LENNOX HAS ALREADY RECEIVED
            APPROXIMATELY 5 INCHES OF RAIN IN TWO EVENTS
            THE PAST 24 HOURS.

&&

Local storm report, Sep 20, 5:49 AM CDT, 1 hour before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
549 AM CDT THU SEP 20 2018

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

0545 AM     FLASH FLOOD      3 E LENNOX              43.36N 96.83W
09/20/2018                   LINCOLN            SD   EMERGENCY MNGR

            WATER OVER NUMEROUS ROADS IN WESTERN LINCOLN
            COUNTY SD. MOST ROADS ARE STILL PASSABLE,
            BUT WATER SEVERAL INCHES DEEP SO CONES ARE
            NEEDED TO SLOW TRAFFIC DOWN. EM CURRENTLY
            MARKING A ROAD EAST OF LENNOX SD.

&&

Local storm report, Sep 20, 6:16 AM CDT, 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
616 AM CDT THU SEP 20 2018

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

0615 AM     HEAVY RAIN       3 NNW LAKE ANDES        43.19N 98.55W
09/20/2018  M4.83 INCH       CHARLES MIX        SD   TRAINED SPOTTER

            STORM TOTAL BEGINNING 36 HOURS AGO.

&&

Local storm report, Sep 20, 6:20 AM CDT, 29 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
620 AM CDT THU SEP 20 2018

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

0618 AM     HEAVY RAIN       2 WNW EVERLY            43.17N 95.36W
09/20/2018  M7.00 INCH       CLAY               IA   CO-OP OBSERVER

            STORM TOTAL SO FAR IN THE PAST 36 HOURS.

&&

Local storm report, Sep 20, 6:46 AM CDT, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
646 AM CDT THU SEP 20 2018

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

0645 AM     FLASH FLOOD      1 NNW LAKE ANDES        43.17N 98.55W
09/20/2018                   CHARLES MIX        SD   LAW ENFORCEMENT

            382ND AVENUE HALF MILE NORTH OF LAKE ANDES
            HAS SEVERAL INCHES OF WATER OVER IT FOR A
            QUARTER MILE STRETCH.

&&

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 19, 8:49 PM CDT	Severe Thunderstorm Warning	FSD	Buena Vista, Clay	12 min
Sep 20, 4:35 AM CDT	Flash Flood Warning	FSD	Clay, Lyon, O'Brien, Osceola, Sioux	5 hr
Sep 20, 6:32 AM CDT	River Flood Warning	FSD	O'Brien	41 hr
Sep 20, 6:49 AM CDT	River Flood Warning	FSD	Lyon	51 hr
Sep 20, 6:49 AM CDT	River Flood Warning	FSD	Plymouth, Sioux	10 days
Sep 20, 6:49 AM CDT	River Flood Warning	FSD	Plymouth	12 days
Sep 20, 6:49 AM CDT	River Flood Warning	FSD	Clay	8 days
Sep 20, 6:49 AM CDT	River Flood Warning	FSD	Lyon	4 days
Sep 20, 6:49 AM CDT	River Flood Warning	FSD	Lyon, Sioux	4 days
Sep 20, 6:49 AM CDT	River Flood Warning	FSD	Sioux	28 hr
Sep 20, 6:49 AM CDT	River Flood Warning	FSD	Sioux	4 days
Sep 20, 6:49 AM CDT	River Flood Warning	FSD	Clay, Dickinson	12 days
Sep 20, 6:49 AM CDT	River Flood Warning	FSD	Clay	14 days
Sep 20, 6:49 AM CDT	River Flood Warning	FSD	Buena Vista, Clay	32 days
Sep 20, 6:49 AM CDT	River Flood Warning	FSD	O'Brien	4 days
Sep 20, 6:49 AM CDT	River Flood Warning	FSD	Cherokee	12 days
Sep 20, 7:06 AM CDT	River Flood Warning	FSD	Plymouth	3 days
Sep 20, 9:15 AM CDT	River Flood Warning	FSD	Plymouth, Sioux	61 hr
Sep 20, 9:15 AM CDT	River Flood Warning	FSD	Plymouth	4 days
Sep 20, 9:15 AM CDT	River Flood Warning	FSD	Clay	42 hr
Sep 20, 9:15 AM CDT	River Flood Warning	FSD	Woodbury	8 days
Sep 20, 9:15 AM CDT	River Flood Warning	FSD	Lyon	47 hr
Sep 20, 9:30 AM CDT	Flash Flood Warning	FSD	Clay, Lyon, O'Brien, Osceola, Sioux	3 hr
Sep 20, 11:17 AM CDT	River Flood Warning	FSD	Lyon	6 days
Sep 20, 12:39 PM CDT	Areal Flood Warning	FSD	Clay, Lyon, O'Brien, Sioux	12 hr
Sep 20, 2:44 PM CDT	River Flood Warning	FSD	Lyon, Sioux	5 days
Sep 20, 3:32 PM CDT	Severe Thunderstorm Warning	FSD	Lyon	43 min
Sep 20, 3:59 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Woodbury	46 min
Sep 20, 4:17 PM CDT	Tornado Warning	FSD	Plymouth, Woodbury	28 min
Sep 20, 5:02 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Dickinson, O'Brien, Osceola	28 min
Sep 20, 5:50 PM CDT	Severe Thunderstorm Warning	FSD	Buena Vista, Ida	25 min

Nearby

River Flood Warnings in Iowa, 2018 Every 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.