Flood Statement
Issued by NWS Sioux Falls, SD

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000
WGUS83 KFSD 211525
FLSFSD
Flood Statement
National Weather Service Sioux Falls SD
1025 AM CDT Sun May 21 2017

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

  Big Sioux River above Hawarden
  Ocheyedan River Near Spencer
  Little Sioux River At Spencer
  Little Sioux River At Linn Grove

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Additional information is available at

http://water.weather.gov/ahps2/index.php?wfo=fsd

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

The next scheduled statement will be issued tomorrow morning.

&&

IAC149-167-SDC127-221925-
/O.EXT.KFSD.FL.W.0012.170521T1603Z-170524T1200Z/
/HWDI4.1.ER.170521T1603Z.170523T0600Z.170524T0600Z.UU/
1025 AM CDT Sun May 21 2017

The Flood Warning continues for
  The Big Sioux River above Hawarden.
* until Wednesday morning.
* At 09AM Sunday the stage was 18.9 feet.
* Flood stage is 19.0 feet.
* Forecast...The river will crest near 19.7 feet on early Tuesday
  morning, and fall below flood stage on Wednesday morning.
* At stages near 19.0 feet...Agricultural flooding begins on the
  South Dakota side of the river.

&&

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

$$

IAC041-221925-
/O.EXT.KFSD.FL.W.0013.000000T0000Z-170523T1400Z/
/SPOI4.1.ER.170521T0707Z.170521T1800Z.170522T1400Z.NO/
1025 AM CDT Sun May 21 2017

...Flood Warning extended until Tuesday May 23...
The Flood Warning continues for
  The Ocheyedan River Near Spencer.
* until Tuesday morning.
* At 09AM Sunday the stage was 8.4 feet.
* Flood stage is 8.0 feet.
* Forecast...The river will crest near 8.5 feet early Sunday
  afternoon, then fall below flood stage on Monday morning.
* Recent activity...The river rose above flood stage on Sunday May
  21.
* At stages near 8.0 feet...Minor flooding of pasture land begins.

&&

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

$$

IAC041-221925-
/O.EXT.KFSD.FL.W.0014.000000T0000Z-170524T1600Z/
/SPWI4.1.ER.170521T0030Z.170522T0000Z.170523T1600Z.NO/
1025 AM CDT Sun May 21 2017

The Flood Warning continues for
  The Little Sioux River At Spencer.
* until Wednesday morning.
* At 09AM Sunday the stage was 10.8 feet.
* Flood stage is 10.0 feet.
* Forecast...The river will crest near 11.1 feet on Sunday evening,
  then fall below flood stage on Tuesday.
* Recent activity...The river rose above flood stage on Saturday May
  20.
* At stages near 10.0 feet...The right bank overflows, and minor
  flooding of the Spencer city park and some rural agricultural areas
  begins.

&&

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

$$

IAC021-041-221925-
/O.EXT.KFSD.FL.W.0015.170521T1514Z-170527T0600Z/
/LNNI4.1.ER.170521T1215Z.170524T0000Z.170526T0600Z.NO/
1025 AM CDT Sun May 21 2017

The Flood Warning continues for
  The Little Sioux River At Linn Grove.
* until late Friday night.
* At 10AM Sunday the stage was 18.0 feet.
* Flood stage is 18.0 feet.
* Forecast...The river will crest near 19.0 feet on Tuesday
  evening, then fall below flood stage late Thursday.
* Recent activity...The river rose above flood stage on Sunday May
  21.
* At stages near 18.5 feet...The city park in Sioux Rapids is
  flooded.

&&

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

$$

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

BIG SIOUX RIVER
HWDI4    19.0   18.92 Sun 9 AM    19.7  Tue 1 AM

OCHEYEDAN RIVER
SPOI4     8.0    8.42 Sun 10 AM    8.5  Sun 1 PM

LITTLE SIOUX RIVER
SPWI4    10.0   10.81 Sun 9 AM    11.1  Sun 7 PM
LNNI4    18.0   18.05 Sun 10 AM   19.0  Tue 7 PM




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