Alert archive / Iowa / River Flood Warnings in 2012

River Flood Warning 32, NWS Sioux Falls, SD

May 28, 2012Lyon County, Iowa

NWS Sioux Falls, SD issued this river flood warning at May 28, 2012, 5:35 AM CDT for Lyon County, Iowa. It took effect at May 28, 2012, 6:04 AM CDT. It was in force for 51 hr.

The area

The counties it named.

The facts

Issued: May 28, 2012, 5:35 AM CDT (10:35 UTC)
In effect from: May 28, 2012, 6:04 AM CDT
Expired: May 30, 2012, 9:06 AM CDT
In force: 51 hr
Issued by: NWS Sioux Falls, SD
Flood severity: Minor

County Lyon County, IA

The radar

The Sioux Falls radar (KFSD), 48 km from the middle of the area, began a volume at 10:38 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 Rock River at Rock Rapids (RAPI4). The gauge peaked at 14.91 ft at May 28, 2012, 6:00 PM CDT.

Action stage: 11 ft
Minor stage: 13 ft
Moderate stage: 16 ft
Major stage: 19 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06483290, 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, in the capitals the NWS used until 2016.

027 
WGUS43 KFSD 281035
FLWFSD
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
535 AM CDT MON MAY 28 2012

...THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A FLOOD 
WARNING FOR THE FOLLOWING RIVERS IN IOWA...

  ROCK RIVER AT ROCK RAPIDS 
  OCHEYEDAN RIVER NEAR SPENCER 
  LITTLE SIOUX RIVER AT SPENCER 
  LITTLE SIOUX RIVER AT LINN GROVE 
  BIG SIOUX RIVER AT HAWARDEN 
...FORECAST FLOODING CHANGED FROM MINOR TO MODERATE SEVERITY FOR THE 
FOLLOWING RIVERS IN IOWA...SOUTH DAKOTA...
  BIG SIOUX RIVER AT AKRON 
   
.THE FOLLOWING RIVER FORECASTS INCLUDE FORECAST PRECIPITATION THROUGH
TONIGHT. ANY ADDITIONAL FUTURE RAINS COULD AFFECT THE CREST 
FORECASTS. 
 
HEAVY RAIN OF BETWEEN 1 AND 3 INCHES FELL ACROSS PORTIONS OF NORTHWEST
IOWA...SOUTHWEST MINNESOTA AND EXTREME SOUTHEAST SOUTH DAKOTA. RUNOFF
FROM THIS RAIN WILL LIKELY CAUSE FLOODING ON A FEW AREA RIVERS. 

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://WWW.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-SDC083-127-291435-
/O.EXT.KFSD.FL.W.0030.120528T1200Z-120602T0320Z/
/HAWI4.1.ER.120528T1200Z.120531T0000Z.120601T0320Z.NO/
535 AM CDT MON MAY 28 2012

THE FLOOD WARNING CONTINUES FOR 
  THE BIG SIOUX RIVER AT HAWARDEN.
* UNTIL FRIDAY EVENING.
* AT 01AM MONDAY THE STAGE WAS 13.8 (ESTIMATED) FEET.
* MINOR FLOODING IS FORECAST.
* FLOOD STAGE IS 15.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 7 AM MONDAY AND CREST NEAR 
  17.8 FEET BY WEDNESDAY MAY 30. THE RIVER WILL FALL BELOW FLOOD 
  STAGE BY THURSDAY MAY 31.
* AT STAGES NEAR 19.0 FEET...SOUTH DAKOTA HIGHWAY 46 BEGINS TO FLOOD.


$$

IAC149-SDC127-291434-
/O.EXT.KFSD.FL.W.0031.120528T1305Z-120602T1712Z/
/AKRI4.2.ER.120528T1305Z.120529T1200Z.120601T1712Z.NO/
535 AM CDT MON MAY 28 2012

...FORECAST FLOODING INCREASED FROM MINOR TO MODERATE SEVERITY...
THE FLOOD WARNING CONTINUES FOR 
  THE BIG SIOUX RIVER AT AKRON.
* UNTIL SATURDAY AFTERNOON.
* AT 05AM MONDAY THE STAGE WAS 15.5 FEET.
* MODERATE FLOODING IS FORECAST.
* FLOOD STAGE IS 16.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 8 AM MONDAY AND CREST NEAR 
  19.8 FEET BY TUESDAY MAY 29. THE RIVER WILL FALL BELOW FLOOD STAGE 
  BY FRIDAY JUNE 01.
* AT STAGES NEAR 20.0 FEET...HIGHWAY 48 NEAR AKRON IS FLOODED. 


$$

IAC119-291434-
/O.NEW.KFSD.FL.W.0032.120528T1104Z-120530T2217Z/
/RAPI4.1.ER.120528T1104Z.120529T0000Z.120529T2217Z.NO/
535 AM CDT MON MAY 28 2012

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A 

* FLOOD WARNING FOR 
  THE ROCK RIVER AT ROCK RAPIDS.
* UNTIL WEDNESDAY AFTERNOON.
* AT 05AM MONDAY THE STAGE WAS 12.8 FEET.
* MINOR FLOODING IS FORECAST.
* FLOOD STAGE IS 13.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 6 AM MONDAY AND CREST NEAR 
  14.3 FEET BY MONDAY MAY 28. THE RIVER WILL FALL BELOW FLOOD STAGE 
  BY TUESDAY MAY 29.
* AT STAGES NEAR 13.0 FEET...THE LOWER BANKS ON THE LEFT SIDE OF THE 
RIVER WILL BEGIN FLOODING. 


$$

IAC041-291434-
/O.NEW.KFSD.FL.W.0033.120529T0300Z-120601T1330Z/
/SPOI4.1.ER.120529T0300Z.120529T1800Z.120531T1330Z.NO/
535 AM CDT MON MAY 28 2012

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A 

* FLOOD WARNING FOR 
  THE OCHEYEDAN RIVER NEAR SPENCER.
* FROM THIS EVENING TO FRIDAY MORNING.
* AT 04AM MONDAY THE STAGE WAS 5.8 FEET.
* MINOR FLOODING IS FORECAST.
* FLOOD STAGE IS 8.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 10 PM MONDAY AND CREST NEAR 
  9.2 FEET BY TUESDAY MAY 29. THE RIVER WILL FALL BELOW FLOOD STAGE 
  BY THURSDAY MAY 31.
* AT STAGES NEAR 9.5 FEET...SIGNIFICANT AMOUNTS OF PASTURE AND OTHER 
FARM LAND BEGIN FLOODING. 


$$

IAC041-291434-
/O.NEW.KFSD.FL.W.0034.120528T1912Z-000000T0000Z/
/SPWI4.1.ER.120528T1912Z.120530T0600Z.000000T0000Z.NO/
535 AM CDT MON MAY 28 2012

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A 

* FLOOD WARNING FOR 
  THE LITTLE SIOUX RIVER AT SPENCER.
* FROM THIS AFTERNOON UNTIL FURTHER NOTICE.
* AT 04PM SUNDAY THE STAGE WAS 9.5 FEET.
* MINOR FLOODING IS FORECAST.
* FLOOD STAGE IS 10.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 2 PM MONDAY AND CREST NEAR 
  12.6 FEET BY WEDNESDAY MAY 30.
* 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. 


$$

IAC021-041-291434-
/O.NEW.KFSD.FL.W.0035.120528T1200Z-000000T0000Z/
/LNNI4.1.ER.120528T1200Z.120601T1800Z.000000T0000Z.NO/
535 AM CDT MON MAY 28 2012

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A 

* FLOOD WARNING FOR 
  THE LITTLE SIOUX RIVER AT LINN GROVE.
* UNTIL FURTHER NOTICE.
* AT 05AM MONDAY THE STAGE WAS 17.9 FEET.
* MINOR FLOODING IS FORECAST.
* FLOOD STAGE IS 18.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 7 AM MONDAY AND CREST NEAR 
  18.7 FEET BY FRIDAY JUNE 01.
* AT STAGES NEAR 18.5 FEET...THE CITY PARK IN SIOUX RAPIDS IS 
FLOODED. 


$$

&& 
LOCATION FLOOD  LATEST OBSERVED  MAXIMUM FORECAST  RECENT OBSERVED
         STAGE  STAGE  TIME      STAGE  TIME       CREST TIME

BIG SIOUX RIVER
HAWI4    15.0   E13.80 MON 1 AM   17.8  WED 7 PM    
AKRI4    16.0   15.46 MON 5 AM    19.8  TUE 7 AM    

ROCK RIVER
RAPI4    13.0   12.82 MON 5 AM    14.3  MON 7 PM    

OCHEYEDAN RIVER
SPOI4    8.0    5.78 MON 5 AM     9.2   TUE 1 PM    

LITTLE SIOUX RIVER
SPWI4    10.0   9.47 SUN 5 PM     12.6  WED 1 AM    
LNNI4    18.0   17.91 MON 5 AM    18.7  FRI 1 PM

5 follow-up statements

341 
WGUS83 KFSD 281357
FLSFSD
FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
857 AM CDT MON MAY 28 2012

...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN IOWA...
SOUTH DAKOTA...

  BIG SIOUX RIVER AT HAWARDEN 
  BIG SIOUX RIVER AT AKRON 
  ROCK RIVER AT ROCK RAPIDS 
...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN IOWA...
  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. 
 
INFORMATION ON VARIABLE AND LOCALLY HEAVY WEEKENDS RAIN...AND THE
EFFECT OF THE RAIN ON RIVERS...CONTINUES TO BE RECEIVED.  

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://WWW.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-SDC083-127-291757-
/O.EXT.KFSD.FL.W.0030.000000T0000Z-120602T0400Z/
/HAWI4.1.ER.120528T1200Z.120530T1800Z.120601T0400Z.NO/
857 AM CDT MON MAY 28 2012

...FLOOD WARNING EXTENDED UNTIL 11 PM FRIDAY... 
THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER AT HAWARDEN.
* UNTIL FRIDAY EVENING.
* AT 07AM MONDAY THE STAGE WAS 15.0 (ESTIMATED) FEET.
* FLOOD STAGE IS 15.0 FEET.
* RECENT ACTIVITY...THE RIVER ROSE ABOVE FLOOD STAGE ON MONDAY MAY 
  28.
* FORECAST...THE RIVER WILL CREST NEAR 17.8 FEET BY WEDNESDAY MAY 30.
  THE RIVER WILL FALL BELOW FLOOD STAGE THURSDAY MAY 31.
* AT STAGES NEAR 19.0 FEET...SOUTH DAKOTA HIGHWAY 46 BEGINS TO FLOOD.



$$

IAC149-SDC127-291757-
/O.EXT.KFSD.FL.W.0031.000000T0000Z-120602T1736Z/
/AKRI4.2.ER.120528T1527Z.120529T1200Z.120601T1736Z.NO/
857 AM CDT MON MAY 28 2012

...FLOOD WARNING EXTENDED UNTIL 1 PM SATURDAY... 
THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER AT AKRON.
* UNTIL SATURDAY AFTERNOON.
* AT 08AM MONDAY THE STAGE WAS 15.7 FEET.
* FLOOD STAGE IS 16.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 10 AM MONDAY AND CREST NEAR 
  19.8 FEET BY TUESDAY MAY 29. THE RIVER WILL FALL BELOW FLOOD STAGE 
  BY FRIDAY JUNE 01.
* AT STAGES NEAR 20.0 FEET...HIGHWAY 48 NEAR AKRON IS FLOODED. 


$$

IAC119-291757-
/O.EXT.KFSD.FL.W.0032.000000T0000Z-120531T0000Z/
/RAPI4.1.ER.120528T1200Z.120529T0000Z.120530T0000Z.NO/
857 AM CDT MON MAY 28 2012

...FLOOD WARNING EXTENDED UNTIL 7 PM WEDNESDAY... 
THE FLOOD WARNING CONTINUES FOR
  THE ROCK RIVER AT ROCK RAPIDS.
* UNTIL WEDNESDAY EVENING.
* AT 08AM MONDAY THE STAGE WAS 13.2 FEET.
* FLOOD STAGE IS 13.0 FEET.
* RECENT ACTIVITY...THE RIVER ROSE ABOVE FLOOD STAGE ON MONDAY MAY 
  28.
* FORECAST...THE RIVER WILL CREST NEAR 14.4 FEET BY MONDAY MAY 28. 
  THE RIVER WILL FALL BELOW FLOOD STAGE TUESDAY MAY 29.
* AT STAGES NEAR 13.0 FEET...THE LOWER BANKS ON THE LEFT SIDE OF THE 
RIVER WILL BEGIN FLOODING. 


$$

IAC041-291757-
/O.CON.KFSD.FL.W.0033.120529T0300Z-120601T1330Z/
/SPOI4.1.ER.120529T0300Z.120529T1800Z.120531T1330Z.NO/
857 AM CDT MON MAY 28 2012

THE FLOOD WARNING CONTINUES FOR
  THE OCHEYEDAN RIVER NEAR SPENCER.
* FROM THIS EVENING TO FRIDAY MORNING.
* AT 08AM MONDAY THE STAGE WAS 6.1 FEET.
* FLOOD STAGE IS 8.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 10 PM MONDAY AND CREST NEAR 
  9.2 FEET BY TUESDAY MAY 29. THE RIVER WILL FALL BELOW FLOOD STAGE 
  BY THURSDAY MAY 31.
* AT STAGES NEAR 9.5 FEET...SIGNIFICANT AMOUNTS OF PASTURE AND OTHER 
FARM LAND BEGIN FLOODING. 


$$

IAC041-291756-
/O.CON.KFSD.FL.W.0034.120528T1912Z-000000T0000Z/
/SPWI4.1.ER.120528T1912Z.120530T0000Z.000000T0000Z.NO/
857 AM CDT MON MAY 28 2012

THE FLOOD WARNING CONTINUES FOR
  THE LITTLE SIOUX RIVER AT SPENCER.
* FROM THIS AFTERNOON UNTIL FURTHER NOTICE.
* AT 08AM MONDAY THE STAGE WAS 9.5 FEET.
* FLOOD STAGE IS 10.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 2 PM MONDAY AND CREST NEAR 
  12.6 FEET BY WEDNESDAY MAY 30.
* 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. 


$$

IAC021-041-291756-
/O.CON.KFSD.FL.W.0035.000000T0000Z-000000T0000Z/
/LNNI4.1.ER.120528T1800Z.120602T0000Z.000000T0000Z.NO/
857 AM CDT MON MAY 28 2012

THE FLOOD WARNING CONTINUES FOR
  THE LITTLE SIOUX RIVER AT LINN GROVE.
* UNTIL FURTHER NOTICE.
* AT 08AM MONDAY THE STAGE WAS 17.9 FEET.
* FLOOD STAGE IS 18.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 1 PM MONDAY AND CREST NEAR 
  18.8 FEET BY FRIDAY JUNE 01.
* AT STAGES NEAR 18.5 FEET...THE CITY PARK IN SIOUX RAPIDS IS 
FLOODED. 


$$

&& 
LOCATION FLOOD  LATEST OBSERVED  MAXIMUM FORECAST  RECENT OBSERVED
         STAGE  STAGE  TIME      STAGE  TIME       CREST TIME

BIG SIOUX RIVER
HAWI4    15.0   E15.00 MON 7 AM    17.8  WED 1 PM    15.0  MON MAY 28
AKRI4    16.0   15.71 MON 8 AM    19.8  TUE 7 AM    15.7  MON MAY 28

ROCK RIVER
RAPI4    13.0   13.23 MON 8 AM    14.4  MON 7 PM    13.2  MON MAY 28

OCHEYEDAN RIVER
SPOI4    8.0   6.07 MON 9 AM    9.2  TUE 1 PM    7.0  FRI MAY 25

LITTLE SIOUX RIVER
SPWI4    10.0   9.52 MON 8 AM    12.6  TUE 7 PM    9.6  SAT MAY 26
LNNI4    18.0   17.94 MON 8 AM    18.8  FRI 7 PM    17.9  MON MAY 28

052 
WGUS83 KFSD 290328
FLSFSD
FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1028 PM CDT MON MAY 28 2012

...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN IOWA...
SOUTH DAKOTA...MINNESOTA...

  BIG SIOUX RIVER AT HAWARDEN
  BIG SIOUX RIVER AT AKRON 
  ROCK RIVER AT ROCK RAPIDS 
  OCHEYEDAN RIVER NEAR SPENCER 
  SPLIT ROCK CREEK BELOW JASPER
  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://WWW.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-SDC083-127-300728-
/O.CON.KFSD.FL.W.0030.000000T0000Z-120602T0400Z/
/HAWI4.1.ER.120528T1200Z.120531T0000Z.120601T0400Z.NO/
1028 PM CDT MON MAY 28 2012

THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER AT HAWARDEN.
* UNTIL FRIDAY EVENING.
* AT 07AM MONDAY THE STAGE WAS 14.8 FEET.
* FLOOD STAGE IS 15.0 FEET.
* FORECAST...THE RIVER WILL CREST NEAR 17.2 FEET BY WEDNESDAY MAY 30. 
  THE RIVER WILL FALL BELOW FLOOD STAGE BY THURSDAY MAY 31.


$$

IAC149-SDC127-300727-
/O.EXT.KFSD.FL.W.0031.000000T0000Z-120602T1712Z/
/AKRI4.2.ER.120528T2033Z.120531T1200Z.120601T1712Z.NO/
1028 PM CDT MON MAY 28 2012

THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER AT AKRON.
* UNTIL SATURDAY AFTERNOON.
* AT 10PM MONDAY THE STAGE WAS 16.3 FEET.
* FLOOD STAGE IS 16.0 FEET.
* RECENT ACTIVITY...THE RIVER ROSE ABOVE FLOOD STAGE ON MONDAY MAY 
  28.
* FORECAST...THE RIVER WILL CREST NEAR 18.3 FEET BY THURSDAY MAY 31. 
  THE RIVER WILL FALL BELOW FLOOD STAGE FRIDAY JUNE 01.
* AT STAGES NEAR 19.5 FEET...SEVERAL FARM HOUSES ARE FLOODED. 


$$

MNC133-SDC099-300727-
/O.CON.KFSD.FL.W.0036.000000T0000Z-000000T0000Z/
/JSPM5.1.ER.120528T2139Z.120529T0315Z.000000T0000Z.UU/
1028 PM CDT MON MAY 28 2012

THE FLOOD WARNING CONTINUES FOR
  THE SPLIT ROCK CREEK BELOW JASPER.
* UNTIL FURTHER NOTICE.
* AT 10PM MONDAY THE STAGE WAS 91.4 FEET.
* FLOOD STAGE IS 91.0 FEET.
* RECENT ACTIVITY...THE RIVER ROSE ABOVE FLOOD STAGE ON MONDAY MAY 
  28.
* 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. 


$$

IAC119-300727-
/O.EXT.KFSD.FL.W.0032.000000T0000Z-120531T0430Z/
/RAPI4.1.ER.120528T1200Z.120529T0600Z.120530T0430Z.NO/
1028 PM CDT MON MAY 28 2012

...FLOOD WARNING EXTENDED UNTIL 11 PM WEDNESDAY... 
THE FLOOD WARNING CONTINUES FOR
  THE ROCK RIVER AT ROCK RAPIDS.
* UNTIL WEDNESDAY EVENING.
* AT 09PM MONDAY THE STAGE WAS 14.7 FEET.
* FLOOD STAGE IS 13.0 FEET.
* FORECAST...THE RIVER WILL CREST NEAR 15.1 FEET BY TUESDAY MAY 29. 
  THE RIVER WILL FALL BELOW FLOOD STAGE TUESDAY MAY 29.
* 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. 


$$

IAC041-300727-
/O.EXT.KFSD.FL.W.0033.000000T0000Z-120601T0400Z/
/SPOI4.1.ER.120529T0600Z.120530T0000Z.120531T0400Z.NO/
1028 PM CDT MON MAY 28 2012

THE FLOOD WARNING CONTINUES FOR
  THE OCHEYEDAN RIVER NEAR SPENCER.
* UNTIL THURSDAY EVENING.
* AT 09PM MONDAY THE STAGE WAS 7.6 FEET.
* FLOOD STAGE IS 8.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 1 AM TUESDAY AND CREST NEAR 
  9.0 FEET BY TUESDAY MAY 29. THE RIVER WILL FALL BELOW FLOOD STAGE 
  BY WEDNESDAY MAY 30.
* AT STAGES NEAR 9.5 FEET...SIGNIFICANT AMOUNTS OF PASTURE AND OTHER 
  FARM LAND BEGIN FLOODING. 


$$

IAC041-300727-
/O.CON.KFSD.FL.W.0034.000000T0000Z-000000T0000Z/
/SPWI4.1.ER.120528T1756Z.120530T0000Z.000000T0000Z.NO/
1028 PM CDT MON MAY 28 2012

THE FLOOD WARNING CONTINUES FOR
  THE LITTLE SIOUX RIVER AT SPENCER.
* UNTIL FURTHER NOTICE.
* AT 08AM MONDAY THE STAGE WAS 9.5 FEET.
* FLOOD STAGE IS 10.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 1 PM MONDAY AND CREST NEAR 
  12.3 FEET BY TUESDAY MAY 29.


$$

IAC021-041-300727-
/O.EXT.KFSD.FL.W.0035.000000T0000Z-120603T1500Z/
/LNNI4.1.ER.120529T0600Z.120601T0000Z.120602T1500Z.NO/
1028 PM CDT MON MAY 28 2012

THE FLOOD WARNING CONTINUES FOR
  THE LITTLE SIOUX RIVER AT LINN GROVE.
* UNTIL SUNDAY MORNING.
* AT 10PM MONDAY THE STAGE WAS 18.0 FEET.
* FLOOD STAGE IS 18.0 FEET.
* FORECAST...THE RIVER WILL CREST NEAR 18.5 FEET BY THURSDAY MAY 31. 
  THE RIVER WILL FALL BELOW FLOOD STAGE BY SATURDAY JUNE 02.
* AT STAGES NEAR 18.5 FEET...THE CITY PARK IN SIOUX RAPIDS IS 
  FLOODED. 


$$

&& 
LOCATION FLOOD  LATEST OBSERVED   MAXIMUM FORECAST  
         STAGE  STAGE  TIME       STAGE   TIME      

BIG SIOUX RIVER
HAWI4    15.0   14.75  MON  7 AM  17.2    WED 7 PM   
AKRI4    16.0   16.28  MON 10 PM  18.3    THU 7 AM   

SPLIT ROCK CREEK
JSPM5    91.0   91.43  MON 10 PM 

ROCK RIVER
RAPI4    13.0   14.73  MON  9 PM  15.1    TUE 1 AM  

OCHEYEDAN RIVER
SPOI4     8.0    7.61  MON 10 PM   9.0    TUE 7 PM   

LITTLE SIOUX RIVER
SPWI4    10.0    9.52  MON  8 AM  12.3    TUE 7 PM    
LNNI4    18.0   17.96  MON 10 PM  18.5    THU 7 PM

277 
WGUS83 KFSD 291353
FLSFSD
FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
852 AM CDT TUE MAY 29 2012

...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN IOWA...
SOUTH DAKOTA...MINNESOTA...

  BIG SIOUX RIVER AT HAWARDEN 
  BIG SIOUX RIVER AT AKRON 
  SPLIT ROCK CREEK BELOW JASPER
  ROCK RIVER AT ROCK RAPIDS 
  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://WWW.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-SDC083-127-301752-
/O.EXT.KFSD.FL.W.0030.000000T0000Z-120602T0234Z/
/HAWI4.1.ER.120528T1200Z.120531T0000Z.120601T0234Z.NO/
852 AM CDT TUE MAY 29 2012

THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER AT HAWARDEN.
* UNTIL FRIDAY EVENING.
* AT 07AM TUESDAY THE STAGE WAS ESTIMATED AT 15.9 FEET.
* FLOOD STAGE IS 15.0 FEET.
* FORECAST...THE RIVER WILL CREST NEAR 17.0 FEET BY WEDNESDAY MAY 30.
  THE RIVER WILL FALL BELOW FLOOD STAGE BY THURSDAY MAY 31.

$$

IAC149-SDC127-301751-
/O.EXT.KFSD.FL.W.0031.000000T0000Z-120602T1551Z/
/AKRI4.2.ER.120528T2033Z.120531T1800Z.120601T1551Z.NO/
852 AM CDT TUE MAY 29 2012

THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER AT AKRON.
* UNTIL SATURDAY MORNING.
* AT 08AM TUESDAY THE STAGE WAS 16.7 FEET.
* FLOOD STAGE IS 16.0 FEET.
* FORECAST...THE RIVER WILL CREST NEAR 18.2 FEET BY THURSDAY MAY 31. 
  THE RIVER WILL FALL BELOW FLOOD STAGE FRIDAY JUNE 01.

$$

MNC133-SDC099-301751-
/O.CON.KFSD.FL.W.0036.000000T0000Z-000000T0000Z/
/JSPM5.1.ER.120528T2139Z.120529T1315Z.000000T0000Z.UU/
852 AM CDT TUE MAY 29 2012

THE FLOOD WARNING CONTINUES FOR
  THE SPLIT ROCK CREEK BELOW JASPER.
* UNTIL FURTHER NOTICE.
* AT 08AM TUESDAY THE STAGE WAS 91.8 FEET.
* FLOOD STAGE IS 91.0 FEET.
* RECENT ACTIVITY...THE RIVER ROSE ABOVE FLOOD STAGE ON MONDAY MAY 
  28.
* 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. 

$$

IAC119-301751-
/O.EXT.KFSD.FL.W.0032.000000T0000Z-120531T0100Z/
/RAPI4.1.ER.120528T1200Z.120529T0200Z.120530T0100Z.NO/
852 AM CDT TUE MAY 29 2012

THE FLOOD WARNING CONTINUES FOR
  THE ROCK RIVER AT ROCK RAPIDS.
* UNTIL WEDNESDAY EVENING.
* AT 08AM TUESDAY THE STAGE WAS 13.9 FEET.
* FLOOD STAGE IS 13.0 FEET.
* FORECAST...THE RIVER WILL CONTINUE TO FALL TO BELOW FLOOD STAGE 
  LATE ON TUESDAY MAY 29.
* AT STAGES NEAR 13.0 FEET...THE LOWER BANKS ON THE LEFT SIDE OF THE 
  RIVER WILL BEGIN FLOODING. 

$$

IAC041-301751-
/O.CON.KFSD.FL.W.0033.000000T0000Z-120601T0400Z/
/SPOI4.1.ER.120529T1000Z.120530T1200Z.120531T0400Z.NO/
852 AM CDT TUE MAY 29 2012

THE FLOOD WARNING CONTINUES FOR
  THE OCHEYEDAN RIVER NEAR SPENCER.
* UNTIL THURSDAY EVENING.
* AT 07AM TUESDAY THE STAGE WAS 8.1 FEET.
* FLOOD STAGE IS 8.0 FEET.
* RECENT ACTIVITY...THE RIVER ROSE ABOVE FLOOD STAGE ON TUESDAY MAY 
  29.
* FORECAST...THE RIVER WILL CREST NEAR 8.6 FEET BY WEDNESDAY MAY 30. 
  THE RIVER WILL FALL BELOW FLOOD STAGE LATE ON WEDNESDAY MAY 30.
* AT STAGES NEAR 9.5 FEET...SIGNIFICANT AMOUNTS OF PASTURE AND OTHER 
  FARM LAND BEGIN FLOODING. 

$$

IAC041-301751-
/O.EXT.KFSD.FL.W.0034.000000T0000Z-120603T1200Z/
/SPWI4.1.ER.120528T2244Z.120530T0600Z.120602T1200Z.NO/
852 AM CDT TUE MAY 29 2012

THE FLOOD WARNING CONTINUES FOR
  THE LITTLE SIOUX RIVER AT SPENCER.
* UNTIL SUNDAY MORNING.
* AT 07AM TUESDAY THE STAGE WAS ESTIMATED AT 11.6 FEET.
* FLOOD STAGE IS 10.0 FEET.
* FORECAST...THE RIVER WILL CREST NEAR 11.3 FEET BY WEDNESDAY MAY 30.
  THE RIVER WILL FALL BELOW FLOOD STAGE BY SATURDAY JUNE 02.
* AT STAGES NEAR 10.0 FEET...THE RIGHT BANK OVERFLOWS...AND MINOR 
  FLOODING OF THE SPENCER CITY PARK AND SOME RURAL AGRICULTURAL AREAS 
  BEGINS. 

$$

IAC021-041-301751-
/O.CON.KFSD.FL.W.0035.000000T0000Z-120603T1500Z/
/LNNI4.1.ER.120529T1245Z.120601T1200Z.120602T1500Z.NO/
852 AM CDT TUE MAY 29 2012

THE FLOOD WARNING CONTINUES FOR
  THE LITTLE SIOUX RIVER AT LINN GROVE.
* UNTIL SUNDAY MORNING.
* AT 08AM TUESDAY THE STAGE WAS 18.0 FEET.
* FLOOD STAGE IS 18.0 FEET.
* RECENT ACTIVITY...THE RIVER ROSE ABOVE FLOOD STAGE ON TUESDAY MAY 
  29.
* FORECAST...THE RIVER WILL CREST NEAR 18.5 FEET BY FRIDAY JUNE 01. 
  THE RIVER WILL FALL BELOW FLOOD STAGE BY SATURDAY JUNE 02.
* AT STAGES NEAR 18.5 FEET...THE CITY PARK IN SIOUX RAPIDS IS 
  FLOODED. 

$$

&& 
LOCATION FLOOD  LATEST OBSERVED  MAXIMUM FORECAST  RECENT OBSERVED
         STAGE  STAGE  TIME      STAGE  TIME       CREST TIME

BIG SIOUX RIVER
HAWI4    15.0  E15.90 TUE 7 AM    17.0  WED 7 PM 
AKRI4    16.0   16.69 TUE 8 AM    18.2  THU 1 PM 

SPLIT ROCK CREEK
JSPM5    91.0   91.84 TUE 8 AM                      91.8  TUE MAY 29

ROCK RIVER
RAPI4    13.0   13.89 TUE 8 AM                      15.0  MON MAY 28

OCHEYEDAN RIVER
SPOI4     8.0    8.12 TUE 8 AM     8.6  WED 7 AM 

LITTLE SIOUX RIVER
SPWI4    10.0  E11.60 TUE 7 AM    11.3  WED 1 AM 
LNNI4    18.0   17.97 TUE 8 AM    18.5  FRI 7 AM 

MG

498 
WGUS83 KFSD 300331
FLSFSD
FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1031 PM CDT TUE MAY 29 2012

...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN IOWA...
SOUTH DAKOTA...MINNESOTA...

  BIG SIOUX RIVER AT HAWARDEN 
  BIG SIOUX RIVER AT AKRON 
  ROCK RIVER AT ROCK RAPIDS 
  OCHEYEDAN RIVER NEAR SPENCER 
  SPLIT ROCK CREEK BELOW JASPER
  LITTLE SIOUX RIVER AT SPENCER 
  LITTLE SIOUX RIVER AT LINN GROVE 
  LITTLE SIOUX RIVER NEAR MILFORD
   
.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://WWW.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-SDC083-127-310731-
/O.EXT.KFSD.FL.W.0030.000000T0000Z-120602T0400Z/
/HAWI4.1.ER.120528T1200Z.120531T0000Z.120601T0400Z.NO/
1031 PM CDT TUE MAY 29 2012

...FLOOD WARNING EXTENDED UNTIL 11 PM FRIDAY... 
THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER AT HAWARDEN.
* UNTIL FRIDAY EVENING.
* AT 07PM TUESDAY THE STAGE WAS 16.2 FEET.
* FLOOD STAGE IS 15.0 FEET.
* RECENT ACTIVITY...THE RIVER ROSE ABOVE FLOOD STAGE ON MONDAY MAY 
  28.
* FORECAST...THE RIVER WILL CREST NEAR 16.9 FEET BY WEDNESDAY MAY 30.
  THE RIVER WILL FALL BELOW FLOOD STAGE THURSDAY MAY 31.

$$

IAC149-SDC127-310731-
/O.EXT.KFSD.FL.W.0031.000000T0000Z-120602T1730Z/
/AKRI4.2.ER.120528T2033Z.120531T1200Z.120601T1730Z.NO/
1031 PM CDT TUE MAY 29 2012

...FLOOD WARNING EXTENDED UNTIL 12 PM SATURDAY... 
THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER AT AKRON.
* UNTIL SATURDAY AFTERNOON.
* AT 10PM TUESDAY THE STAGE WAS 17.2 FEET.
* FLOOD STAGE IS 16.0 FEET.
* FORECAST...THE RIVER WILL CREST NEAR 18.1 FEET BY THURSDAY MAY 31. 
  THE RIVER WILL FALL BELOW FLOOD STAGE FRIDAY JUNE 01.
* AT STAGES NEAR 17.0 FEET...ABOUT 6500 ACRES OF FARM LAND ARE 
  FLOODED. 


$$

MNC133-SDC099-310731-
/O.CON.KFSD.FL.W.0036.000000T0000Z-000000T0000Z/
/JSPM5.1.ER.120528T2139Z.120529T1545Z.000000T0000Z.UU/
1031 PM CDT TUE MAY 29 2012

THE FLOOD WARNING CONTINUES FOR
  THE SPLIT ROCK CREEK BELOW JASPER.
* UNTIL FURTHER NOTICE.
* AT 10PM TUESDAY THE STAGE WAS 91.5 FEET.
* FLOOD STAGE IS 91.0 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. 


$$

IAC119-310600-
/O.EXT.KFSD.FL.W.0032.000000T0000Z-120531T0600Z/
/RAPI4.1.ER.120528T1200Z.120529T0200Z.120530T0600Z.NO/
1031 PM CDT TUE MAY 29 2012

...FLOOD WARNING EXTENDED UNTIL 1 AM THURSDAY... 
THE FLOOD WARNING CONTINUES FOR
  THE ROCK RIVER AT ROCK RAPIDS.
* UNTIL LATE WEDNESDAY NIGHT.
* AT 10PM TUESDAY THE STAGE WAS 13.0 FEET.
* FLOOD STAGE IS 13.0 FEET.
* FORECAST...THE RIVER WILL CONTINUE TO FALL TO BELOW FLOOD STAGE BY 
  WEDNESDAY MAY 30.
* AT STAGES NEAR 13.0 FEET...THE LOWER BANKS ON THE LEFT SIDE OF THE 
  RIVER WILL BEGIN FLOODING. 


$$

IAC041-310730-
/O.EXT.KFSD.FL.W.0033.000000T0000Z-120601T0712Z/
/SPOI4.1.ER.120529T1000Z.120530T0600Z.120531T0712Z.NO/
1031 PM CDT TUE MAY 29 2012

...FLOOD WARNING EXTENDED UNTIL 2 AM FRIDAY... 
THE FLOOD WARNING CONTINUES FOR
  THE OCHEYEDAN RIVER NEAR SPENCER.
* UNTIL LATE THURSDAY NIGHT.
* AT 09PM TUESDAY THE STAGE WAS 8.6 FEET.
* FLOOD STAGE IS 8.0 FEET.
* FORECAST...THE RIVER WILL CREST NEAR 8.7 FEET BY WEDNESDAY MAY 30. 
  THE RIVER WILL FALL BELOW FLOOD STAGE THURSDAY MAY 31.
* AT STAGES NEAR 8.0 FEET...MINOR FLOODING OF PASTURE LAND BEGINS. 


$$

IAC041-059-310730-
/O.CON.KFSD.FL.W.0037.000000T0000Z-000000T0000Z/
/MIFI4.1.ER.000000T0000Z.120529T1440Z.000000T0000Z.NO/
1031 PM CDT TUE MAY 29 2012

THE FLOOD WARNING CONTINUES FOR
  THE LITTLE SIOUX RIVER NEAR MILFORD.
* UNTIL FURTHER NOTICE.
* AT 09AM TUESDAY THE STAGE WAS 12.5 FEET.
* FLOOD STAGE IS 12.0 FEET.
* AT STAGES NEAR 12.0 FEET...MINOR FLOODING OF LOW LYING AGRICULTURAL
  LANDS BEGINS. 


$$

IAC041-310730-
/O.EXT.KFSD.FL.W.0034.000000T0000Z-120603T0600Z/
/SPWI4.1.ER.120528T2326Z.120530T0600Z.120602T0600Z.NO/
1031 PM CDT TUE MAY 29 2012

THE FLOOD WARNING CONTINUES FOR
  THE LITTLE SIOUX RIVER AT SPENCER.
* UNTIL LATE SATURDAY NIGHT.
* AT 05PM TUESDAY THE STAGE WAS 11.1 FEET.
* FLOOD STAGE IS 10.0 FEET.
* RECENT ACTIVITY...THE RIVER ROSE ABOVE FLOOD STAGE ON MONDAY MAY 
  28.
* FORECAST...THE RIVER WILL CREST NEAR 11.2 FEET BY WEDNESDAY MAY 30.
  THE RIVER WILL FALL BELOW FLOOD STAGE SATURDAY JUNE 02.
* AT STAGES NEAR 10.0 FEET...THE RIGHT BANK OVERFLOWS...AND MINOR 
  FLOODING OF THE SPENCER CITY PARK AND SOME RURAL AGRICULTURAL AREAS 
  BEGINS. 


$$

IAC021-041-310730-
/O.EXT.KFSD.FL.W.0035.000000T0000Z-120603T1200Z/
/LNNI4.1.ER.120529T1245Z.120601T0000Z.120602T1200Z.NO/
1031 PM CDT TUE MAY 29 2012

THE FLOOD WARNING CONTINUES FOR
  THE LITTLE SIOUX RIVER AT LINN GROVE.
* UNTIL SUNDAY MORNING.
* AT 10PM TUESDAY THE STAGE WAS 18.0 FEET.
* FLOOD STAGE IS 18.0 FEET.
* RECENT ACTIVITY...THE RIVER ROSE ABOVE FLOOD STAGE ON TUESDAY MAY 
  29.
* FORECAST...RISE ABOVE FLOOD STAGE BY 1 AM WEDNESDAY AND CREST NEAR 
  18.2 FEET BY THURSDAY MAY 31. THE RIVER WILL FALL BELOW FLOOD STAGE
  BY SATURDAY JUNE 02.
* AT STAGES NEAR 18.5 FEET...THE CITY PARK IN SIOUX RAPIDS IS 
  FLOODED. 


$$

&& 
LOCATION FLOOD  LATEST  OBSERVED  MAXIMUM FORECAST  RECENT OBSERVED
         STAGE  STAGE   TIME      STAGE   TIME      CREST  TIME

BIG SIOUX RIVER
HAWI4    15.0   16.25   TUE  8 PM  16.9   WED 7 PM 
AKRI4    16.0   17.18   TUE 10 PM  18.1   THU 7 AM 

SPLIT ROCK CREEK
JSPM5    91.0   91.48   TUE 10 PM    

ROCK RIVER
RAPI4    13.0   13.01   TUE 10 PM  13.0   WED 1 AM   15.0   MON MAY 28

OCHEYEDAN RIVER
SPOI4     8.0    8.57   TUE 10 PM   8.7   WED 1 AM    

LITTLE SIOUX RIVER
MIFI4    12.0   12.51   TUE 10 AM   
SPWI4    10.0   11.05   TUE  6 PM   11.2   WED 1 AM    
LNNI4    18.0   17.97   TUE 10 PM   18.2   THU 7 PM

735 
WGUS83 KFSD 301406
FLSFSD
FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
906 AM CDT WED MAY 30 2012

...THE FLOOD WARNING IS CANCELLED FOR THE FOLLOWING RIVERS IN 
MINNESOTA...SOUTH DAKOTA...IOWA...

  SPLIT ROCK CREEK BELOW JASPER 
  ROCK RIVER AT ROCK RAPIDS 

...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN IOWA...
SOUTH DAKOTA...

  BIG SIOUX RIVER AT HAWARDEN 
  BIG SIOUX RIVER AT AKRON 
  OCHEYEDAN RIVER NEAR SPENCER 
  LITTLE SIOUX RIVER NEAR MILFORD
  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://WWW.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-SDC083-127-311806-
/O.EXT.KFSD.FL.W.0030.000000T0000Z-120602T1400Z/
/HAWI4.1.ER.120528T1200Z.120531T0000Z.120601T1400Z.NO/
906 AM CDT WED MAY 30 2012

...FLOOD WARNING EXTENDED UNTIL 9 AM SATURDAY... 
THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER AT HAWARDEN.
* UNTIL SATURDAY MORNING.
* AT 07AM WEDNESDAY THE STAGE WAS ESTIMATED AT 16.6 FEET.
* FLOOD STAGE IS 15.0 FEET.
* FORECAST...THE RIVER WILL CREST NEAR 16.9 FEET BY WEDNESDAY MAY 30.
  THE RIVER WILL FALL BELOW FLOOD STAGE FRIDAY JUNE 01.

$$

IAC149-SDC127-311805-
/O.EXT.KFSD.FL.W.0031.000000T0000Z-120603T0600Z/
/AKRI4.2.ER.120528T2033Z.120531T1800Z.120602T0600Z.NO/
906 AM CDT WED MAY 30 2012

...FLOOD WARNING EXTENDED UNTIL 1 AM SUNDAY... 
THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER AT AKRON.
* UNTIL LATE SATURDAY NIGHT.
* AT 08AM WEDNESDAY THE STAGE WAS 17.6 FEET.
* FLOOD STAGE IS 16.0 FEET.
* FORECAST...THE RIVER WILL CREST NEAR 18.2 FEET BY THURSDAY MAY 31. 
  THE RIVER WILL FALL BELOW FLOOD STAGE SATURDAY JUNE 02.
* AT STAGES NEAR 17.0 FEET...ABOUT 6500 ACRES OF FARM LAND ARE 
  FLOODED. 

$$

MNC133-SDC099-301436-
/O.CAN.KFSD.FL.W.0036.000000T0000Z-120530T1406Z/
/JSPM5.1.ER.120528T2139Z.120529T1545Z.000000T0000Z.UU/
906 AM CDT WED MAY 30 2012

THE FLOOD WARNING IS CANCELLED FOR
  THE SPLIT ROCK CREEK BELOW JASPER.
* AT 08AM WEDNESDAY THE STAGE WAS 91.0 FEET.
* FLOOD STAGE IS 91.0 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. 

$$

IAC041-311805-
/O.EXT.KFSD.FL.W.0033.000000T0000Z-120602T0000Z/
/SPOI4.1.ER.120529T1000Z.120530T1800Z.120601T0000Z.NO/
906 AM CDT WED MAY 30 2012

...FLOOD WARNING EXTENDED UNTIL 7 PM FRIDAY... 
THE FLOOD WARNING CONTINUES FOR
  THE OCHEYEDAN RIVER NEAR SPENCER.
* UNTIL FRIDAY EVENING.
* AT 08AM WEDNESDAY THE STAGE WAS 8.8 FEET.
* FLOOD STAGE IS 8.0 FEET.
* FORECAST...THE RIVER WILL CREST NEAR 8.9 FEET BY WEDNESDAY MAY 30. 
  THE RIVER WILL FALL BELOW FLOOD STAGE THURSDAY MAY 31.
* AT STAGES NEAR 9.5 FEET...SIGNIFICANT AMOUNTS OF PASTURE AND OTHER 
  FARM LAND BEGIN FLOODING. 

$$

IAC041-059-311805-
/O.CON.KFSD.FL.W.0037.000000T0000Z-000000T0000Z/
/MIFI4.1.ER.000000T0000Z.120530T1300Z.000000T0000Z.NO/
906 AM CDT WED MAY 30 2012

THE FLOOD WARNING CONTINUES FOR
  THE LITTLE SIOUX RIVER NEAR MILFORD.
* UNTIL FURTHER NOTICE.
* AT 08AM WEDNESDAY THE STAGE WAS 13.0 FEET.
* FLOOD STAGE IS 12.0 FEET.
* AT STAGES NEAR 14.0 FEET...SIGNIFICANT AMOUNTS OF PASTURE AND OTHER
  FARM LANDS BEGIN TO FLOOD. 

$$

IAC041-311805-
/O.EXT.KFSD.FL.W.0034.000000T0000Z-120604T0600Z/
/SPWI4.1.ER.120528T2326Z.120530T1800Z.120603T0600Z.NO/
906 AM CDT WED MAY 30 2012

...FLOOD WARNING EXTENDED UNTIL 1 AM MONDAY... 
THE FLOOD WARNING CONTINUES FOR
  THE LITTLE SIOUX RIVER AT SPENCER.
* UNTIL LATE SUNDAY NIGHT.
* AT 07AM WEDNESDAY THE STAGE WAS ESTIMATED AT 11.4 FEET.
* FLOOD STAGE IS 10.0 FEET.
* FORECAST...THE RIVER IS NEAR CREST NOW...AND WILL FALL BELOW FLOOD
  STAGE SUNDAY JUNE 03.
* AT STAGES NEAR 10.0 FEET...THE RIGHT BANK OVERFLOWS...AND MINOR 
  FLOODING OF THE SPENCER CITY PARK AND SOME RURAL AGRICULTURAL AREAS 
  BEGINS. 

$$

IAC021-041-311805-
/O.EXT.KFSD.FL.W.0035.000000T0000Z-120604T1200Z/
/LNNI4.1.ER.120529T1245Z.120601T0000Z.120603T1200Z.NO/
906 AM CDT WED MAY 30 2012

...FLOOD WARNING EXTENDED UNTIL 7 AM MONDAY... 
THE FLOOD WARNING CONTINUES FOR
  THE LITTLE SIOUX RIVER AT LINN GROVE.
* UNTIL MONDAY MORNING.
* AT 08AM WEDNESDAY THE STAGE WAS 18.0 FEET.
* FLOOD STAGE IS 18.0 FEET.
* FORECAST...THE RIVER WILL CREST NEAR 18.3 FEET BY FRIDAY JUNE 01. 
  THE RIVER WILL FALL BELOW FLOOD STAGE SUNDAY JUNE 03.
* AT STAGES NEAR 18.5 FEET...THE CITY PARK IN SIOUX RAPIDS IS 
  FLOODED. 

$$

IAC119-301436-
/O.CAN.KFSD.FL.W.0032.000000T0000Z-120531T0600Z/
/RAPI4.1.ER.120528T1200Z.120529T0200Z.120530T0341Z.NO/
906 AM CDT WED MAY 30 2012

THE FLOOD WARNING IS CANCELLED FOR
  THE ROCK RIVER AT ROCK RAPIDS.
* AT 08AM WEDNESDAY THE STAGE WAS 12.5 FEET.
* FLOOD STAGE IS 13.0 FEET.
* RECENT ACTIVITY...THE RIVER FELL BELOW FLOOD STAGE AT 11 PM 
  TUESDAY.
* FORECAST...THE RIVER WILL CONTINUE TO FALL TO 10.9 FEET BY 7 AM 
  THURSDAY.
* AT STAGES NEAR 13.0 FEET...THE LOWER BANKS ON THE LEFT SIDE OF THE 
  RIVER WILL BEGIN FLOODING. 

$$

&& 
LOCATION FLOOD  LATEST OBSERVED  MAXIMUM FORECAST  RECENT OBSERVED
         STAGE  STAGE  TIME      STAGE  TIME       CREST TIME

BIG SIOUX RIVER
HAWI4    15.0  E16.60 WED 7 AM    16.9  WED 7 PM 
AKRI4    16.0   17.56 WED 8 AM    18.2  THU 1 PM 

SPLIT ROCK CREEK
JSPM5    91.0   91.02 WED 8 AM                      91.9  TUE MAY 29

OCHEYEDAN RIVER
SPOI4     8.0    8.81 WED 9 AM     8.9  WED 1 PM  

LITTLE SIOUX RIVER
MIFI4    12.0   13.04 WED 8 AM                      13.0  WED MAY 30
SPWI4    10.0  E11.40 WED 7 AM    11.4  WED 1 PM 
LNNI4    18.0   18.03 WED 8 AM    18.3  THU 7 PM 

ROCK RIVER
RAPI4    13.0   12.47 WED 8 AM                      15.0  MON MAY 28

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 May 28, 3:39 AM CDT, 1 hour 56 minutes earlier.

Area forecast discussion, May 28, 3:39 AM CDT, 1 hour 56 minutes before

AREA FORECAST DISCUSSION FOR SOUTHEAST SD/SOUTHWEST MN/NORTHWEST IA
NATIONAL WEATHER SERVICE SIOUX FALLS SD
339 AM CDT MON MAY 28 2012

.DISCUSSION...
SHOWERS CONTINUING OVER OUR FAR EASTERN ZONES EARLY THIS MORNING IN
VICINITY OF FRONTAL BOUNDARY/UPPER LEVEL SHORTWAVE...THOUGH EXPECT
THIS ACTIVITY TO PULL OUT OF OUR AREA BY SUNRISE AS THE SHORTWAVE
TRACKS INTO MINNESOTA. OTHERWISE...LOOKING FOR DECREASING CLOUDS AND
BREEZY CONDITIONS THROUGH THE DAY IN A COLD AIR ADVECTION
REGIME...AND WILL BE A MIXY DAY WITH STEEP LOW LEVEL LAPSE RATES
WITH HIGHS MUCH COOLER THAN YESTERDAY...FROM NEAR 70 IN THE NORTH TO
AROUND 80 IN OUR FAR SOUTHEASTERN IOWA ZONES. MODELS WANTING TO SPIT
OUT A LITTLE PRECIPITATION ALONG OUR NORTHERN BORDER EARLY IN THE
DAY AS SECONDARY UPPER LEVEL SHORTWAVE DROPS OUT OF EASTERN
MONTANA/WESTERN NORTH DAKOTA WITH COOLING ALOFT...THOUGH IT LOOKS
LIKE MOST OF THE ENERGY WITH THIS FEATURE WILL REMAIN TO OUR NORTH
DID THROW IN SLIGHT POPS OVER THAT AREA DURING THE MORNING HOURS.
WINDS WILL DROP OFF TONIGHT...THOUGH REMAIN HIGH ENOUGH TO KEEP
TEMPERATURES FROM COMPLETELY BOTTOMING OUT...WITH LOWS IN THE MID
40S TO LOWER 50S.

MAIN UPPER LEVEL SHORTWAVE TRACKS TO OUR NORTH AND EAST ON TUESDAY
PULLING EVEN COOLER AIR INTO THE REGION.  WITH THE STRONG COLD AIR
ADVECTION/STEEP LOW LEVEL LAPSE RATES AND RELATIVELY STOUT WINDS
ALOFT IT WILL BE ANOTHER BREEZY DAY. HIGHS WILL RANGE FROM NEAR 60
NORTH TO NEAR 70 SOUTH. HIGH PRESSURE AXIS SLIDES ACROSS THE REGION
ON TUESDAY NIGHT...AND WITH WINDS BECOMING NEARLY CALM IT WILL BE A
COOL NIGHT WITH LOWS AROUND 40 NORTH TO MID 40S SOUTH.

ANOTHER SHORTWAVE DROPS SOUTHWARD LATER ON WEDNESDAY INTO THURSDAY
ON A NORTHWESTERLY UPPER LEVEL FLOW. GOOD UPPER LEVEL SUPPORT WITH
THE SYSTEM WITH A 300 MB JET STREAK STREAMING FROM EASTERN SOUTH
DAKOTA INTO SOUTHERN MINNESOTA...ALONG WITH DECENT MIDLEVEL
FRONTOGENESIS MAXIMIZED ACROSS OUR SOUTH AND WEST. IN LIGHT OF
THAT...KEPT WITH LIKELY POPS FOR WEDNESDAY AND WEDNESDAY NIGHT OVER
MOST OF THE AREA...WITH SHOWER CHANCES LINGERING INTO THURSDAY. WITH
CLOUDS/SHOWERS AND A NORTHEASTERLY LOW LEVEL FLOW BOTH WEDNESDAY AND
THURSDAY WILL BE COOL WITH HIGHS ONLY UPPER 50S TO LOWER 60S.

FARTHER OUT INTO THE EXTENDED...LOOKS LIKE A WARMING TREND AS AN
UPPER LEVEL RIDGE BUILDS INTO THE REGION AND A SOUTHERLY FLOW
RETURNS TO THE AREA. SHOULD BE MAINLY DRY THROUGH THE PERIOD...WITH
HIGHS IN THE UPPER 60S TO LOWER 70S FOR FRIDAY...TOPPING OUT IN THE
LOWER TO MID 80S BY SUNDAY. LOWS WILL RANGE FROM THE 40S ON FRIDAY
MORNING...TO THE 50S TO NEAR 60 ON SUNDAY MORNING.

&&

.AVIATION.../FOR THE 06Z TAF ISSUANCE/
SHOWERS AND THUNDERSTORMS WILL CONTINUE TO TRACK NORTH NORTHEASTWARD
ACROSS NORTHWEST IOWA...SOUTHWEST MINNESOTA AND EXTREME SOUTHEAST
SOUTH DAKOTA.  THE SEVERE WEATHER THREAT HAS DIMINISHED...BUT GUSTY
WINDS AND LOCALLY MVFR VISIBILITIES ARE POSSIBLE WITH THE REMAINING
STORMS. SHOWERS AND THUNDERSTORMS WILL END FROM WEST TO EAST BY
AROUND 09Z. VFR CONDITIONS WILL RULE LATE TONIGHT THROUGH 06/TUE.
WINDS WILL BECOME BREEZY FROM THE WEST NORTHWEST AFTER 14Z.

&&

.FSD WATCHES/WARNINGS/ADVISORIES...
IA...NONE.
MN...NONE.
NE...NONE.
SD...NONE.
&&

Hazardous weather outlook, May 27, 11:35 AM CDT, 18 hours before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1135 AM CDT SUN MAY 27 2012

SDZ038>040-050-052>071-MNZ071-072-080-081-089-090-097-098-
IAZ001>003-012>014-020>022-031-032-NEZ013-014-281200-
AURORA-BEADLE-BON HOMME-BROOKINGS-BRULE-BUENA VISTA IA-
CHARLES MIX-CHEROKEE IA-CLAY-CLAY IA-COTTONWOOD MN-DAKOTA NE-
DAVISON-DICKINSON IA-DIXON NE-DOUGLAS-GREGORY-HANSON-HUTCHINSON-
IDA IA-JACKSON MN-JERAULD-KINGSBURY-LAKE-LINCOLN-LINCOLN MN-
LYON IA-LYON MN-MCCOOK-MINER-MINNEHAHA-MOODY-MURRAY MN-NOBLES MN-
OBRIEN IA-OSCEOLA IA-PIPESTONE MN-PLYMOUTH IA-ROCK MN-SANBORN-
SIOUX IA-TURNER-UNION-WOODBURY IA-YANKTON-
1135 AM CDT SUN MAY 27 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST SOUTH DAKOTA...
SOUTHWEST MINNESOTA...NORTHWEST IOWA...AND NORTHEAST NEBRASKA.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS...
AN ELEVATED RISK OF SEVERE THUNDERSTORMS EXISTS LATE THIS
AFTERNOON AND THROUGHOUT THE EVENING. SCATTERED STORMS ARE EXPECTED
TO DEVELOP LATE THIS AFTERNOON...MERGING INTO A CONVECTIVE COMPLEX
AS THE EVENING PROGRESSES. EARLY IN THIS EVENT...ANY ISOLATED TO
SCATTERED CELLS COULD PRODUCE HAIL UP TO THE SIZE OF GOLF BALLS.
THEN THROUGH THE EVENING...THE COMPLEX OF STORMS WILL GIVE BOTH A
HAIL AND DAMAGING WIND THREAT. DAMAGING WINDS IN EXCESS OF 70 MPH
ARE POSSIBLE ALONG AND EAST OF A YANKTON...TO SIOUX FALLS TO
MARSHALL MINNESOTA LINE...WITH THE HAIL POTENTIAL DECREASING
MODESTLY TO ABOUT HALF DOLLAR SIZE.

FLOODING...
A STORM COMPLEX IS EXPECTED TO DEVELOP AND MOVE EASTWARD THIS
EVENING. ONE TO TWO INCHES OF RAIN WITH LOCALLY HEAVIER AMOUNTS
IS LIKELY TO OCCUR IN MUCH OF SOUTHWEST MINNESOTA AND NORTHWEST
IOWA...AND ALSO IN A SMALL AREA OF EXTREME SOUTHEAST SOUTH DAKOTA
AND FAR NORTHEAST NEBRASKA. THESE AREAS HAVE ALSO RECEIVED A
WIDESPREAD TWO TO FOUR INCHES OF RAIN THE PAST SEVERAL DAYS CREATING
SATURATED GROUND. THEREFORE URBAN AND RURAL FLASH FLOODING IS
POSSIBLE IN THESE AREAS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE LIKELY AFTER 4 PM TO MIDNIGHT TONIGHT.

&&

FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT
WWW.WEATHER.GOV/SIOUXFALLS. THIS INCLUDES THE GRAPHICAL HAZARDOUS
WEATHER OUTLOOK.

The office that day

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

Issued	Product	Office	Counties	Lasted
May 27, 7:11 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Sioux	34 min
May 27, 7:22 PM CDT	Flash Flood Warning	FSD	Lyon, Plymouth, Sioux	7 hr
May 27, 7:31 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, Plymouth, Sioux	29 min
May 27, 7:54 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, O'Brien, Osceola, Sioux	36 min
May 27, 8:19 PM CDT	Flash Flood Warning	FSD	Lyon, Osceola	7 hr
May 27, 8:54 PM CDT	Severe Thunderstorm Warning	FSD	Dickinson	36 min
May 27, 9:18 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth	27 min
May 27, 9:42 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Woodbury	10 min
May 28, 5:35 AM CDT	River Flood Warning	FSD	Clay	71 hr
May 28, 5:35 AM CDT	River Flood Warning	FSD	Clay	8 days
May 28, 5:35 AM CDT	River Flood Warning	FSD	Buena Vista, Clay	9 days

Nearby

River Flood Warnings in Iowa, 2012 Every river flood warning in 2012

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.