Alert archive / Iowa / River Flood Warnings in 2018

River Flood Warning 155, NWS Sioux Falls, SD

June 30, 2018Sioux County, Iowa

NWS Sioux Falls, SD issued this river flood warning at Jun 30, 2018, 9:12 AM CDT for Sioux County, Iowa. It took effect at Jul 1, 2018, 1:00 PM CDT. It was in force for 49 hr.

The area

The outline as issued.

The facts

Issued: Jun 30, 2018, 9:12 AM CDT (14:12 UTC)
In effect from: Jul 1, 2018, 1:00 PM CDT
Expired: Jul 3, 2018, 1:45 PM CDT
In force: 49 hr
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Flood severity: Minor

County Sioux County, IA

The radar

The Sioux Falls radar (KFSD), 88 km from the middle of the area, began a volume at 14:13 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

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

The river

Written for the forecast point Floyd River at Alton (ALTI4). The gauge peaked at 10.89 ft at Jul 3, 2018, 1:00 AM CDT.

Action stage: 10 ft
Minor stage: 12 ft
Moderate stage: 16 ft
Major stage: 22 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06600100, 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.

756 
WGUS43 KFSD 301412
FLWFSD
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Sioux Falls SD
912 AM CDT Sat Jun 30 2018

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

  Floyd River At Alton
 
.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.

&&

IAC167-011812-
/O.NEW.KFSD.FL.W.0155.180701T1800Z-180703T1845Z/
/ALTI4.1.ER.180701T1800Z.180702T0600Z.180702T1845Z.NO/
912 AM CDT Sat Jun 30 2018

The National Weather Service in Sioux Falls has issued a 

* Flood Warning for 
  The Floyd River At Alton.
* from Sunday afternoon to Tuesday afternoon.
* At 09AM Saturday the stage was 9.13 feet.
* Minor flooding is forecast.
* Flood stage is 12.00 feet.
* Forecast...The river will rise above flood stage by Sunday afternoon
  and crest near 13.1 feet Sunday night. The river will fall back
  below flood stage by Monday afternoon.
* At stages near 12.0 feet...Flooding begins to affect the lower 
  lying agricultural lands along the river. 

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

$$

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

FLOYD RIVER
ALTI4    12.0      9.13 Sat 9 AM    13.1  Mon 1 AM    20.5  Thu Jun 21

MG

2 follow-up statements

711 
WGUS83 KFSD 301519
FLSFSD
Flood Statement
National Weather Service Sioux Falls SD
1019 AM CDT Sat Jun 30 2018

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

  Vermillion River Near Davis
  Vermillion River Near Wakonda
  Vermillion River Near Vermillion
  Big Sioux River above Hawarden
  Big Sioux River At Akron
  Big Sioux River near Richland
  Big Sioux River near Jefferson
  Split Rock Creek Below Jasper
  Floyd River At Alton
  Ocheyedan River Near Spencer
  West Fork Little Sioux River near Lake Park
  Little Sioux River near Montgomery
  Little Sioux River near Milford
  Little Sioux River at Spencer
  Little Sioux River At Linn Grove
  Little Sioux River At Cherokee
  Little Sioux River Near Correctionville
  West Fork Des Moines River near Avoca
  West Fork Des Moines River Near Windom
  West Fork Des Moines River At Jackson
 
.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.

&&

IAC149-167-SDC127-011918-
/O.CON.KFSD.FL.W.0095.000000T0000Z-000000T0000Z/
/HWDI4.3.ER.180621T0901Z.180623T0145Z.000000T0000Z.UU/
1019 AM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Big Sioux River above Hawarden.
* until further notice.
* At 09AM Saturday the stage was 25.79 feet.
* Moderate flooding is occurring and Moderate flooding is forecast.
* Flood stage is 20.50 feet.
* Forecast...The river will continue to fall to a stage of 24.3 feet 
  by 7 AM Sunday.
* At stages near 24.0 feet...Some farm houses on the South Dakota 
  side of the river are isolated by high water. 

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

$$

IAC149-SDC127-011918-
/O.EXT.KFSD.FL.W.0096.000000T0000Z-180705T2100Z/
/AKRI4.3.ER.180621T1915Z.180623T2245Z.180704T2100Z.NO/
1019 AM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Big Sioux River At Akron.
* until Thursday afternoon.
* At 09AM Saturday the stage was 20.69 feet.
* Major flooding is occurring and Major flooding is forecast.
* Flood stage is 16.00 feet.
* Forecast...The river will continue to fall to below flood stage by 
  Wednesday July 04.
* At stages near 20.0 feet...Highway 48 near Akron is flooded. 

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

$$

IAC149-SDC127-011918-
/O.CON.KFSD.FL.W.0126.000000T0000Z-000000T0000Z/
/BSRS2.3.ER.180622T0352Z.180624T0830Z.000000T0000Z.UU/
1019 AM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Big Sioux River near Richland.
* until further notice.
* At 09AM Saturday the stage was 1122.06 feet.
* Flood stage is 1117.00 feet.
* At stages near 1121 feet...Some farm levees will be overtopped and 
  some farm buildings will be flooded. 

&&
 
LAT...LON 4278 9665 4277 9659 4273 9660 4268 9655
          4264 9661 4270 9666

$$

SDC127-011918-
/O.CON.KFSD.FL.W.0136.000000T0000Z-000000T0000Z/
/BSJS2.1.ER.180624T0945Z.180626T0700Z.000000T0000Z.UU/
1019 AM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Big Sioux River near Jefferson.
* until further notice.
* At 09AM Saturday the stage was 35.88 feet.
* Flood stage is 31.00 feet.

&&
 
LAT...LON 4264 9661 4268 9655 4265 9651 4257 9647
          4257 9651

$$

IAC059-011918-
/O.CON.KFSD.FL.W.0122.000000T0000Z-000000T0000Z/
/LPRI4.2.ER.180621T1915Z.180626T0815Z.000000T0000Z.UU/
1019 AM CDT Sat Jun 30 2018

The Flood Warning continues for
  The West Fork Little Sioux River near Lake Park.
* until further notice.
* At 09AM Saturday the stage was 1396.85 feet.
* Flood stage is 1396.00 feet.
* At stages near 1396 feet...Crop and pasture land begins to flood 
  between Lake Park and Montgomery. 

&&
 
LAT...LON 4349 9530 4349 9526 4343 9526 4342 9524
          4340 9526 4342 9529

$$

IAC059-011918-
/O.CON.KFSD.FL.W.0128.000000T0000Z-000000T0000Z/
/MLSI4.2.ER.180622T0452Z.180625T0030Z.000000T0000Z.UU/
1019 AM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Little Sioux River near Montgomery.
* until further notice.
* At 09AM Saturday the stage was 1392.85 feet.
* Flood stage is 1391.00 feet.
* At stages near 1392 feet...170th Avenue north of Highway 9 begins 
  to flood 

&&
 
LAT...LON 4354 9523 4354 9518 4347 9519 4341 9524
          4343 9528 4349 9523

$$

IAC041-059-011918-
/O.CON.KFSD.FL.W.0105.000000T0000Z-000000T0000Z/
/MIFI4.3.ER.180621T0229Z.180625T0915Z.000000T0000Z.NR/
1019 AM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Little Sioux River near Milford.
* until further notice.
* At 09AM Saturday the stage was 17.04 feet.
* Flood stage is 12.00 feet.
* At stages near 17.0 feet...190th Avenue is flooded south of the 
  bridge near Horseshoe Bend county park. 

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

$$

IAC041-011918-
/O.CON.KFSD.FL.W.0101.000000T0000Z-000000T0000Z/
/SPWI4.3.ER.180620T2205Z.180626T0715Z.000000T0000Z.NO/
1019 AM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Little Sioux River at Spencer.
* until further notice.
* At 09AM Saturday the stage was 14.83 feet.
* Moderate flooding is occurring and Moderate flooding is forecast.
* Flood stage is 10.00 feet.
* Forecast...The river will continue to fall to a stage of 14.1 feet 
  by 7 AM Sunday.
* 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

$$

IAC021-041-011918-
/O.EXT.KFSD.FL.W.0092.000000T0000Z-000000T0000Z/
/LNNI4.3.ER.180618T1130Z.180628T0230Z.000000T0000Z.NR/
1019 AM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Little Sioux River At Linn Grove.
* until further notice.
* At 09AM Saturday the stage was 22.30 feet.
* Major flooding is occurring and Major flooding is forecast.
* Flood stage is 18.00 feet.
* Forecast...The river will continue to fall to a stage of 21.7 feet 
  by 7 AM Sunday.

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

$$

IAC035-011918-
/O.CON.KFSD.FL.W.0102.000000T0000Z-000000T0000Z/
/CHKI4.3.ER.180621T2103Z.180629T0700Z.000000T0000Z.NO/
1019 AM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Little Sioux River At Cherokee.
* until further notice.
* At 09AM Saturday the stage was 23.59 feet.
* Moderate flooding is occurring and Moderate flooding is forecast.
* Flood stage is 17.00 feet.
* Forecast...The river will continue to fall to a stage of 23.4 feet 
  by 7 AM Sunday.
* At stages near 24.0 feet...County Highway C38E is closed due to 
  flooding, and the water reaches the northwest corner of 2nd Street 
  and Beech Street in Cherokee. Water also reaches the front of the B&H
  feed store. County Road C44 between Highway 159 and County Road L56 
  is flooded. 

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

$$

IAC193-011918-
/O.EXT.KFSD.FL.W.0130.000000T0000Z-180706T0900Z/
/CRRI4.3.ER.180626T1707Z.180702T0000Z.180705T0900Z.NO/
1019 AM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Little Sioux River Near Correctionville.
* until late Thursday night.
* At 09AM Saturday the stage was 23.59 feet.
* Major flooding is occurring and Major flooding is forecast.
* Flood stage is 19.00 feet.
* Forecast...The river will crest near 24.1 feet by Sunday July 01.
* At stages near 23.8 feet...Major agricultural flooding on the east 
  side of the river begins, and water will spread 1/4 mile east and 
  affect highway L27. 

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

$$

MNC101-011918-
/O.CON.KFSD.FL.W.0121.000000T0000Z-000000T0000Z/
/AVOM5.3.ER.180621T1613Z.180627T1945Z.000000T0000Z.UU/
1019 AM CDT Sat Jun 30 2018

The Flood Warning continues for
  The West Fork Des Moines River near Avoca.
* until further notice.
* At 09AM Saturday the stage was 1428.04 feet.
* Flood stage is 1425.00 feet.
* At stages near 1428 feet...County Road 6 and County Road 44 begin 
  to flood, and there is widespread significant flooding of crop and 
  pasture land. 

&&
 
LAT...LON 4406 9571 4411 9564 4389 9537 4382 9533
          4386 9546 4396 9557

$$

MNC033-063-011918-
/O.CON.KFSD.FL.W.0131.000000T0000Z-000000T0000Z/
/WDOM5.2.ER.180624T0830Z.180629T2300Z.000000T0000Z.NO/
1019 AM CDT Sat Jun 30 2018

The Flood Warning continues for
  The West Fork Des Moines River Near Windom.
* until further notice.
* At 09AM Saturday the stage was 21.82 feet.
* Flood stage is 19.00 feet.
* At stages near 21.0 feet...Island Park in Windom begins to flood, 
  along with some agricultural lands outside of Windom. 

&&
 
LAT...LON 4382 9533 4389 9537 4398 9521 4375 9499
          4375 9512 4388 9520

$$

MNC063-011918-
/O.EXT.KFSD.FL.W.0154.000000T0000Z-180706T0000Z/
/JCKM5.1.ER.180628T0330Z.180630T1800Z.180705T0000Z.NO/
1019 AM CDT Sat Jun 30 2018

The Flood Warning continues for
  The West Fork Des Moines River At Jackson.
* until Thursday evening.
* At 09AM Saturday the stage was 12.45 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Flood stage is 12.00 feet.
* Forecast...The river will crest near 12.5 feet this evening.
* At stages near 12.0 feet...Lowland flooding in rural areas begins 
  on non-leveed portions of the river. 

&&
 
LAT...LON 4375 9512 4375 9499 4362 9495 4350 9485
          4350 9496 4365 9507

$$

SDC125-011918-
/O.EXT.KFSD.FL.W.0111.000000T0000Z-180702T0234Z/
/DVSS2.2.ER.180621T1357Z.180623T1030Z.180701T0234Z.NO/
1019 AM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Vermillion River Near Davis.
* until Sunday evening.
* At 08AM Saturday the stage was 11.90 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Flood stage is 11.00 feet.
* Forecast...The river will continue to fall to below flood stage by 
  tonight.
* 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

$$

SDC027-011918-
/O.EXT.KFSD.FL.W.0112.000000T0000Z-180702T1200Z/
/WKAS2.3.ER.180621T1833Z.180626T1200Z.180701T1200Z.NR/
1019 AM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Vermillion River Near Wakonda.
* until Monday morning.
* At 07AM Saturday the stage was estimated at 15.00 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Flood stage is 14.00 feet.
* Forecast...The river will continue to fall to below flood stage by 
  Sunday July 01.
* 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

$$

SDC027-011918-
/O.EXT.KFSD.FL.W.0135.000000T0000Z-180702T1800Z/
/VERS2.2.ER.180627T1340Z.180628T1230Z.180701T1800Z.NO/
1019 AM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Vermillion River Near Vermillion.
* until Monday afternoon.
* At 09AM Saturday the stage was 22.94 feet.
* Moderate flooding is occurring and Moderate flooding is forecast.
* Flood stage is 21.00 feet.
* Forecast...The river will continue to fall to below flood stage by 
  Sunday July 01.
* At stages near 23.0 feet...Water reaches the bottom of the bridge 
  on North Crawford Avenue northeast of the gauge. 

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

$$

IAC041-011918-
/O.EXT.KFSD.FL.W.0100.000000T0000Z-180706T0600Z/
/SPOI4.3.ER.180621T0335Z.180622T0245Z.180705T0600Z.NR/
1019 AM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Ocheyedan River Near Spencer.
* until late Thursday night.
* At 09AM Saturday the stage was 10.14 feet.
* Moderate flooding is occurring and Moderate flooding is forecast.
* Flood stage is 8.00 feet.
* Forecast...The river will continue to fall to below flood stage by 
  Thursday July 05.
* 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

$$

MNC133-SDC099-011918-
/O.CON.KFSD.FL.W.0133.000000T0000Z-000000T0000Z/
/JSPM5.2.ER.180624T1850Z.180626T2315Z.000000T0000Z.NO/
1019 AM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Split Rock Creek Below Jasper.
* until further notice.
* At 09AM Saturday the stage was 91.63 feet.
* Flood stage is 91.00 feet.
* 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

$$

IAC167-011918-
/O.CON.KFSD.FL.W.0155.180701T1800Z-180703T1845Z/
/ALTI4.1.ER.180701T1800Z.180702T0600Z.180702T1845Z.NO/
1019 AM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Floyd River At Alton.
* from Sunday afternoon to Tuesday afternoon.
* At 09AM Saturday the stage was 9.13 feet.
* Minor flooding is forecast.
* Flood stage is 12.00 feet.
* Forecast...The river will rise above flood stage by Sunday afternoon
  and crest near 13.1 feet Sunday night. The river will fall back
  below flood stage by Monday afternoon.
* At stages near 12.0 feet...Flooding begins to affect the lower 
  lying agricultural lands along the river. 

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

$$

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

BIG SIOUX RIVER
HWDI4      20.5     25.79 Sat 9 AM                      34.0  Fri Jun 22
AKRI4      16.0     20.69 Sat 9 AM                      23.5  Sat Jun 23
BSRS2    1117.0   1122.06 Sat 9 AM                    1124.4  Sun Jun 24
BSJS2      31.0     35.88 Sat 9 AM                      38.4  Tue Jun 26

LITTLE SIOUX RIVER
LPRI4    1396.0   1396.85 Sat 10 AM                   1399.4  Tue Jun 24
MLSI4    1391.0   1392.85 Sat 10 AM                   1394.9  Mon Jun 24
MIFI4      12.0     17.04 Sat 9 AM                      20.1  Mon Jun 25
SPWI4      10.0     14.83 Sat 9 AM                      17.4  Tue Jun 26
LNNI4      18.0     22.30 Sat 10 AM                     23.4  Wed Jun 27
CHKI4      17.0     23.59 Sat 9 AM                      24.5  Tue Jun 26
CRRI4      19.0     23.59 Sat 9 AM    24.1  Sun 7 PM 

WEST FORK DES MOINES RIVER
AVOM5    1425.0   1428.04 Sat 9 AM                    1428.9  Wed Jun 27
WDOM5      19.0     21.82 Sat 9 AM                      21.9  Fri Jun 29
JCKM5      12.0     12.45 Sat 9 AM    12.5  Sat 1 PM 

VERMILLION RIVER
DVSS2      11.0     11.90 Sat 8 AM                      14.4  Sat Jun 23
WKAS2      14.0    E15.00 Sat 7 AM                      17.5  Mon Jun 25
VERS2      21.0     22.94 Sat 9 AM                      23.8  Thu Jun 28

OCHEYEDAN RIVER
SPOI4       8.0     10.14 Sat 10 AM                     12.7  Thu Jun 21

SPLIT ROCK CREEK
JSPM5      91.0     91.63 Sat 9 AM                      96.7  Thu Jun 21

FLOYD RIVER
ALTI4      12.0      9.13 Sat 9 AM    13.1  Mon 1 AM    20.5  Thu Jun 21

MG

820 
WGUS83 KFSD 010300
FLSFSD
Flood Statement
National Weather Service Sioux Falls SD
1000 PM CDT Sat Jun 30 2018

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

  Floyd River At Alton
  
...The Flood Warning continues for the following rivers in South 
Dakota...Iowa...Minnesota...

  Vermillion River Near Davis
  Vermillion River Near Wakonda
  Vermillion River Near Vermillion
 
  Big Sioux River above Hawarden
  Big Sioux River At Akron
  Big Sioux River near Richland
  Big Sioux River near Jefferson
  Split Rock Creek Below Jasper
  Ocheyedan River Near Spencer
  West Fork Little Sioux River near Lake Park
  Little Sioux River near Montgomery
  Little Sioux River near Milford
  Little Sioux River at Spencer
  Little Sioux River At Linn Grove
  Little Sioux River At Cherokee
  Little Sioux River Near Correctionville
  West Fork Des Moines River near Avoca
  West Fork Des Moines River Near Windom
  West Fork Des Moines River At Jackson
 
.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.

&&

IAC149-167-SDC127-020700-
/O.CON.KFSD.FL.W.0095.000000T0000Z-000000T0000Z/
/HWDI4.3.ER.180621T0901Z.180623T0145Z.000000T0000Z.UU/
1000 PM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Big Sioux River above Hawarden.
* until further notice.
* At 08PM Saturday the stage was 24.66 feet.
* Moderate flooding is occurring and Moderate flooding is forecast.
* Flood stage is 20.50 feet.
* Forecast...The river will continue to fall to a stage of 23.8 feet 
  by 7 AM Monday.
* At stages near 24.0 feet...Some farm houses on the South Dakota 
  side of the river are isolated by high water. 

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

$$

IAC149-SDC127-020700-
/O.EXT.KFSD.FL.W.0096.000000T0000Z-180705T1800Z/
/AKRI4.3.ER.180621T1915Z.180623T2245Z.180704T1800Z.NO/
1000 PM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Big Sioux River At Akron.
* until Thursday afternoon.
* At 09PM Saturday the stage was 20.23 feet.
* Major flooding is occurring and Major flooding is forecast.
* Flood stage is 16.00 feet.
* Forecast...The river will continue to fall to below flood stage by 
  Wednesday July 04.
* At stages near 20.0 feet...Highway 48 near Akron is flooded. 

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

$$

IAC149-SDC127-020700-
/O.CON.KFSD.FL.W.0126.000000T0000Z-000000T0000Z/
/BSRS2.3.ER.180622T0352Z.180624T0830Z.000000T0000Z.UU/
1000 PM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Big Sioux River near Richland.
* until further notice.
* At 09PM Saturday the stage was 1121.62 feet.
* Flood stage is 1117.00 feet.
* At stages near 1121 feet...Some farm levees will be overtopped and 
  some farm buildings will be flooded. 

&&
 
LAT...LON 4278 9665 4277 9659 4273 9660 4268 9655
          4264 9661 4270 9666

$$

SDC127-020700-
/O.CON.KFSD.FL.W.0136.000000T0000Z-000000T0000Z/
/BSJS2.1.ER.180624T0945Z.180626T0700Z.000000T0000Z.UU/
1000 PM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Big Sioux River near Jefferson.
* until further notice.
* At 08PM Saturday the stage was 35.06 feet.
* Flood stage is 31.00 feet.

&&
 
LAT...LON 4264 9661 4268 9655 4265 9651 4257 9647
          4257 9651

$$

IAC059-020700-
/O.CON.KFSD.FL.W.0122.000000T0000Z-000000T0000Z/
/LPRI4.2.ER.180621T1915Z.180626T0815Z.000000T0000Z.UU/
1000 PM CDT Sat Jun 30 2018

The Flood Warning continues for
  The West Fork Little Sioux River near Lake Park.
* until further notice.
* At 09PM Saturday the stage was 1396.61 feet.
* Flood stage is 1396.00 feet.
* At stages near 1396 feet...Crop and pasture land begins to flood 
  between Lake Park and Montgomery. 

&&
 
LAT...LON 4349 9530 4349 9526 4343 9526 4342 9524
          4340 9526 4342 9529

$$

IAC059-020700-
/O.CON.KFSD.FL.W.0128.000000T0000Z-000000T0000Z/
/MLSI4.2.ER.180622T0452Z.180625T0030Z.000000T0000Z.UU/
1000 PM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Little Sioux River near Montgomery.
* until further notice.
* At 09PM Saturday the stage was 1392.57 feet.
* Flood stage is 1391.00 feet.
* At stages near 1392 feet...170th Avenue north of Highway 9 begins 
  to flood 

&&
 
LAT...LON 4354 9523 4354 9518 4347 9519 4341 9524
          4343 9528 4349 9523

$$

IAC041-059-020700-
/O.CON.KFSD.FL.W.0105.000000T0000Z-000000T0000Z/
/MIFI4.3.ER.180621T0229Z.180625T0915Z.000000T0000Z.NR/
1000 PM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Little Sioux River near Milford.
* until further notice.
* At 08PM Saturday the stage was 16.73 feet.
* Flood stage is 12.00 feet.
* At stages near 17.0 feet...190th Avenue is flooded south of the 
  bridge near Horseshoe Bend county park. 

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

$$

IAC041-020700-
/O.CON.KFSD.FL.W.0101.000000T0000Z-000000T0000Z/
/SPWI4.3.ER.180620T2205Z.180626T0715Z.000000T0000Z.NO/
1000 PM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Little Sioux River at Spencer.
* until further notice.
* At 08PM Saturday the stage was 14.59 feet.
* Moderate flooding is occurring and Moderate flooding is forecast.
* Flood stage is 10.00 feet.
* Forecast...The river will continue to fall to a stage of 14.0 feet 
  by 7 AM Monday.
* 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

$$

IAC021-041-020700-
/O.CON.KFSD.FL.W.0092.000000T0000Z-000000T0000Z/
/LNNI4.3.ER.180618T1130Z.180628T0230Z.000000T0000Z.NR/
1000 PM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Little Sioux River At Linn Grove.
* until further notice.
* At 09PM Saturday the stage was 21.92 feet.
* Major flooding is occurring and Major flooding is forecast.
* Flood stage is 18.00 feet.
* Forecast...The river will continue to fall to a stage of 20.7 feet 
  by 7 AM Monday.

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

$$

IAC035-020700-
/O.CON.KFSD.FL.W.0102.000000T0000Z-000000T0000Z/
/CHKI4.3.ER.180621T2103Z.180629T0700Z.000000T0000Z.NO/
1000 PM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Little Sioux River At Cherokee.
* until further notice.
* At 08PM Saturday the stage was 23.21 feet.
* Moderate flooding is occurring and Moderate flooding is forecast.
* Flood stage is 17.00 feet.
* Forecast...The river will continue to fall to a stage of 22.2 feet 
  by 7 AM Monday.
* 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

$$

IAC193-020700-
/O.EXT.KFSD.FL.W.0130.000000T0000Z-180706T2000Z/
/CRRI4.3.ER.180626T1707Z.180702T0000Z.180705T2000Z.NO/
1000 PM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Little Sioux River Near Correctionville.
* until Friday afternoon.
* At 09PM Saturday the stage was 23.41 feet.
* Major flooding is occurring and Major flooding is forecast.
* Flood stage is 19.00 feet.
* Forecast...The river will rise to 24.2 feet by Sunday July 01.
* At stages near 23.8 feet...Major agricultural flooding on the east 
  side of the river begins, and water will spread 1/4 mile east and 
  affect highway L27. 

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

$$

SDC125-020150-
/O.EXT.KFSD.FL.W.0111.000000T0000Z-180702T0150Z/
/DVSS2.2.ER.180621T1357Z.180623T1030Z.180701T0150Z.NO/
1000 PM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Vermillion River Near Davis.
* until Sunday evening.
* At 04PM Saturday the stage was 11.40 feet.
* Minor flooding is occurring.
* Flood stage is 11.00 feet.
* Forecast...The river will continue to fall to below flood stage by 
  Saturday June 30.
* At stages near 11.0 feet...Low lying areas and some fields begin 
  flooding. 

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

$$

SDC027-020700-
/O.CON.KFSD.FL.W.0112.000000T0000Z-180702T1200Z/
/WKAS2.3.ER.180621T1833Z.180626T1200Z.180701T1200Z.NR/
1000 PM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Vermillion River Near Wakonda.
* until Monday morning.
* At 06PM Friday the stage was 15.06 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Flood stage is 14.00 feet.
* Forecast...The river will continue to fall to below flood stage by 
  Sunday July 01.
* At stages near 14.0 feet...Minor flooding of low lying areas begins
  in non-leveed areas and some agricultural land will flood if the 
  levees fail. 

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

$$

SDC027-020700-
/O.CON.KFSD.FL.W.0135.000000T0000Z-180702T1800Z/
/VERS2.2.ER.180627T1340Z.180628T1230Z.180701T1800Z.NO/
1000 PM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Vermillion River Near Vermillion.
* until Monday afternoon.
* At 08PM Saturday the stage was 22.47 feet.
* Moderate flooding is occurring and Moderate flooding is forecast.
* Flood stage is 21.00 feet.
* Forecast...The river will continue to fall to below flood stage by 
  Sunday July 01.
* At stages near 23.0 feet...Water reaches the bottom of the bridge 
  on North Crawford Avenue northeast of the gauge. 

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

$$

IAC041-020700-
/O.EXT.KFSD.FL.W.0100.000000T0000Z-180704T1330Z/
/SPOI4.3.ER.180621T0335Z.180622T0245Z.180703T1330Z.NR/
1000 PM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Ocheyedan River Near Spencer.
* until Wednesday morning.
* At 08PM Saturday the stage was 9.91 feet.
* Moderate flooding is occurring and Moderate flooding is forecast.
* Flood stage is 8.00 feet.
* Forecast...The river will continue to fall to below flood stage by 
  Tuesday July 03.
* At stages near 9.5 feet...Significant amounts of pasture and other 
  farm land begin flooding. 

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

$$

MNC101-020700-
/O.CON.KFSD.FL.W.0121.000000T0000Z-000000T0000Z/
/AVOM5.3.ER.180621T1613Z.180627T1945Z.000000T0000Z.UU/
1000 PM CDT Sat Jun 30 2018

The Flood Warning continues for
  The West Fork Des Moines River near Avoca.
* until further notice.
* At 08PM Saturday the stage was 1427.88 feet.
* Flood stage is 1425.00 feet.
* At stages near 1428 feet...County Road 6 and County Road 44 begin 
  to flood, and there is widespread significant flooding of crop and 
  pasture land. 

&&
 
LAT...LON 4406 9571 4411 9564 4389 9537 4382 9533
          4386 9546 4396 9557

$$

MNC033-063-020700-
/O.CON.KFSD.FL.W.0131.000000T0000Z-000000T0000Z/
/WDOM5.2.ER.180624T0830Z.180629T2300Z.000000T0000Z.NO/
1000 PM CDT Sat Jun 30 2018

The Flood Warning continues for
  The West Fork Des Moines River Near Windom.
* until further notice.
* At 09PM Saturday the stage was 21.73 feet.
* Flood stage is 19.00 feet.
* At stages near 21.0 feet...Island Park in Windom begins to flood, 
  along with some agricultural lands outside of Windom. 

&&
 
LAT...LON 4382 9533 4389 9537 4398 9521 4375 9499
          4375 9512 4388 9520

$$

MNC063-020700-
/O.EXT.KFSD.FL.W.0154.000000T0000Z-180706T0600Z/
/JCKM5.1.ER.180628T0330Z.180701T0100Z.180705T0600Z.NO/
1000 PM CDT Sat Jun 30 2018

The Flood Warning continues for
  The West Fork Des Moines River At Jackson.
* until late Thursday night.
* At 08PM Saturday the stage was 12.51 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Flood stage is 12.00 feet.
* Forecast...The river will continue to fall to below flood stage by 
  Thursday July 05.
* At stages near 12.0 feet...Lowland flooding in rural areas begins 
  on non-leveed portions of the river. 

&&
 
LAT...LON 4375 9512 4375 9499 4362 9495 4350 9485
          4350 9496 4365 9507

$$

MNC133-SDC099-020700-
/O.CON.KFSD.FL.W.0133.000000T0000Z-000000T0000Z/
/JSPM5.2.ER.180624T1850Z.180626T2315Z.000000T0000Z.NO/
1000 PM CDT Sat Jun 30 2018

The Flood Warning continues for
  The Split Rock Creek Below Jasper.
* until further notice.
* At 09PM Saturday the stage was 91.22 feet.
* Flood stage is 91.00 feet.
* 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

$$

IAC167-010330-
/O.CAN.KFSD.FL.W.0155.000000T0000Z-180703T1845Z/
/ALTI4.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1000 PM CDT Sat Jun 30 2018

The Flood Warning is cancelled for
  The Floyd River At Alton.
* At 09PM Saturday the stage was 8.85 feet.
* Flood stage is 12.00 feet.
* Forecast...The river will crest below flood stage at 9.4 feet 
  Monday July 02.

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

$$

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

BIG SIOUX RIVER
HWDI4    20.5       24.66  Sat 8 PM                        34.0  Fri Jun 22
AKRI4    16.0       20.23  Sat 9 PM                        23.5  Sat Jun 23
BSRS2    1117.0   1121.62  Sat 9 PM                      1124.4  Sun Jun 24
BSJS2    31.0       35.06  Sat 8 PM                        38.4  Tue Jun 26

LITTLE SIOUX RIVER
LPRI4    1396.0   1396.61  Sat 9 PM                      1399.4  Tue Jun 26
MLSI4    1391.0   1392.57  Sat 9 PM                      1394.9  Mon Jun 25
MIFI4    12.0       16.73  Sat 8 PM                        20.1  Mon Jun 25
SPWI4    10.0       14.59  Sat 8 PM                        17.4  Tue Jun 26
LNNI4    18.0       21.92  Sat 9 PM                        23.4  Wed Jun 27
CHKI4    17.0       23.21  Sat 8 PM                        24.5  Tue Jun 26
CRRI4    19.0       23.41  Sat 9 PM   24.2  Sun 7 PM      

VERMILLION RIVER
DVSS2    11.0       11.40  Sat 5 PM                        13.6  Thu Jun 21
WKAS2    14.0      E15.06  Fri 7 PM                        16.9  Sat Jun 23
VERS2    21.0       22.47  Sat 8 PM                        23.8  Thu Jun 28

OCHEYEDAN RIVER
SPOI4    8.0         9.91  Sat 9 PM                        12.7  Thu Jun 21

WEST FORK DES MOINES RIVER
AVOM5    1425.0    1427.88 Sat 8 PM                      1428.9  Wed Jun 27
WDOM5    19.0        21.73 Sat 9 PM                        21.9  Fri Jun 29
JCKM5    12.0        12.51 Sat 8 PM    12.5  Sun 1 AM    

SPLIT ROCK CREEK
JSPM5    91.0        91.22 Sat 9 PM                        96.7  Thu Jun 21

FLOYD RIVER
ALTI4    12.0         8.85 Sat 9 PM     9.4  Mon 1 AM      20.5  Thu Jun 21

JMJ

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 Jun 30, 6:51 AM CDT, 2 hours 21 minutes earlier.

Area forecast discussion, Jun 30, 6:51 AM CDT, 2 hours 21 minutes before

Area Forecast Discussion
National Weather Service Sioux Falls SD
651 AM CDT Sat Jun 30 2018

.SHORT TERM...(Today and Tonight)
Issued at 400 AM CDT Sat Jun 30 2018

Active weather day today with band of elevated storms lifting north
towards the forecast area.  Storms have 1000-1500 J/kg of elevated
CAPE to work with.  In general, expect storms to remain below severe
limits, but if storms are able to work east into northwest Iowa or
southwest Minnesota ahead of the stationary/cold front there is a
bit more instability there.

Short wave train across western Kansas this morning is expected to
work north and by late in the day interact with boundary across the
region. Model soundings suggest in excess of 3000 J/kg of CAPE by
mid-afternoon.  Not a lot in the way of low level shear in the
atmosphere, but do have a fair amount of mid-level shear leading to
0-6 km bulk shear values around 40 knots.  With boundaries around
the area, agree with heightened severe weather threat across the
area.  With veering shear profiles and boundaries in the region from
prior convection, agree with SPC analysis that all severe weather
threats are possible late this afternoon into the evening hours.  In
addition, precipitable water values are near 2 inches, and with deep
warm layer cloud depths, the potential exists for heavy rainfall
east of the front. With northwest Iowa remaining hydrologically
sensitive due to recent rainfall, elected to issue a flash flood
watch mainly along and east of highway 60. Time period of greatest
concern is from late this afternoon through the evening hours.
Thereafter, the front is expected to work east.

.LONG TERM...(Sunday through Friday)
Issued at 400 AM CDT Sat Jun 30 2018

More tranquil conditions are expected on Sunday though lingering low
level moisture may lead to an afternoon shower or isolated
thunderstorm east of I-29.  Have not added this in the forecast with
surface ridge building into the region, but will have to keep an eye
on this.

Ridge builds across the eastern half of the US leading into the 4th
of July, while a trough digs into the western US.  Forecast area
left in the middle, with warm and muggy conditions developing with
sporadic chances of thunderstorms. Ridge loosens its grip  on the
area late in the week, potentially leading to near normal
temperatures headed into next weekend.

&&

.AVIATION...(For the 12Z TAFS through 12Z Sunday morning)
Issued at 647 AM CDT Sat Jun 30 2018

Periodic rounds of showers and thunderstorms are expected today.
Convection will be most numerous east of I-29, but is very
difficult to time. Focused convection in the near term portion of
the forecast, and will need to refine timing further as the day
progresses. Cold front will work through the region late this
afternoon into this evening. Potential for very heavy rainfall
along and ahead of the front, which will reduce the visibility
periodically. Best chances for heavy rainfall after 21Z is across
northwest Iowa.

&&

.FSD WATCHES/WARNINGS/ADVISORIES...
SD...None.
MN...Flash Flood Watch from 4 PM CDT this afternoon through Sunday
     morning for MNZ090.

IA...Flash Flood Watch from 4 PM CDT this afternoon through Sunday
     morning for IAZ002-003-013-014-020>022-031-032.

NE...Flash Flood Watch from 4 PM CDT this afternoon through Sunday
     morning for NEZ014.

&&

SHORT TERM...BT
LONG TERM...BT
AVIATION...BT

Hazardous weather outlook, Jun 30, 5:11 AM CDT, 4 hours 1 minute before

Hazardous Weather Outlook
National Weather Service Sioux Falls SD
511 AM CDT Sat Jun 30 2018

IAZ001>003-012>014-020>022-031-032-MNZ080-081-089-090-098-NEZ013-
014-SDZ067-070-071-011015-
Lyon IA-Osceola-Dickinson-Sioux-O'Brien-Clay IA-Plymouth-Cherokee-
Buena Vista-Woodbury-Ida-Murray-Cottonwood-Nobles-Jackson-Rock-
Dixon-Dakota-Lincoln SD-Clay SD-Union-
511 AM CDT Sat Jun 30 2018

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

.DAY ONE...Today and Tonight

Scattered thunderstorms are possible throughout the day. The
strongest storms are expected in the late afternoon and evening
hours. Some of the stronger storms will be capable of producing
hail up to two inches in diameter, wind gusts to 70 mph, heavy
rainfall and an isolated tornado. A flash flood watch is in
effect for areas along and east of highway 60.

Moderate to major flooding will continue. Those with interest
along area rivers will want to remain alert and take action if
necessary. For specific river details, visit:
https://water.weather.gov.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is likely after 3 pm today.

MNZ071-072-097-SDZ038>040-050-052>066-068-069-011015-
Lincoln MN-Lyon MN-Pipestone-Beadle-Kingsbury-Brookings-Gregory-
Jerauld-Sanborn-Miner-Lake-Moody-Brule-Aurora-Davison-Hanson-
McCook-Minnehaha-Charles Mix-Douglas-Hutchinson-Turner-Bon Homme-
Yankton-
511 AM CDT Sat Jun 30 2018

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

.DAY ONE...Today and Tonight

Scattered thunderstorms are possible this morning. These storms
are mainly expected to remain below severe limits.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

There is a chance for thunderstorms Monday night. A few storms may
be strong, producing large hail and damaging winds.

Warm and muggy weather is expected to return to the region on
Tuesday into Wednesday. Heat index values may approach 100 degrees
each afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 3:09 AM CDT	Flash Flood Watch	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, O'Brien and 3 more	25 hr
Jun 30, 12:10 PM CDT	Severe Thunderstorm Warning	FSD	Buena Vista, Cherokee	35 min
Jun 30, 12:39 PM CDT	Severe Thunderstorm Warning	FSD	Buena Vista, Clay	36 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.