Alert archive / Iowa / River Flood Warnings in 2013

River Flood Warning 23, NWS Sioux Falls, SD

May 27, 2013Monona County, Woodbury County, Iowa

NWS Sioux Falls, SD issued this river flood warning at May 27, 2013, 10:19 AM CDT for Monona County, Woodbury County, Iowa. It took effect at May 27, 2013, 11:56 PM CDT. It was in force for .

The area

The counties it named.

The facts

Issued: May 27, 2013, 10:19 AM CDT (15:19 UTC)
In effect from: May 27, 2013, 11:56 PM CDT
Expired: May 27, 2013, 9:24 PM CDT
In force
Issued by: NWS Sioux Falls, SD
Flood severity: Minor

Counties Monona County, IA, Woodbury County, IA

The radar

The Omaha radar (KOAX), 105 km from the middle of the area, began a volume at 15:22 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 West Fork Ditch near Hornick (HOKI4).

Action stage: 18 ft
Minor stage: 20 ft
Moderate stage: 22 ft
Major stage: 26.5 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06602020, 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.

204 
WGUS43 KFSD 271519
FLWFSD
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1019 AM CDT MON MAY 27 2013

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

  WEST FORK DITCH NEAR HORNICK 

...FORECAST FLOODING CHANGED FROM MODERATE TO MAJOR 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. 
 
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. 

&&

IAC149-SDC127-281919-
/O.EXT.KFSD.FL.W.0010.000000T0000Z-130601T2046Z/
/AKRI4.3.ER.130527T1025Z.130528T1800Z.130531T2046Z.NO/
1019 AM CDT MON MAY 27 2013

...FORECAST FLOODING INCREASED FROM MODERATE TO MAJOR SEVERITY...
THE FLOOD WARNING CONTINUES FOR 
  THE BIG SIOUX RIVER AT AKRON.
* UNTIL SATURDAY AFTERNOON.
* AT 10AM MONDAY THE STAGE WAS 16.9 FEET.
* MINOR FLOODING IS OCCURRING AND MAJOR FLOODING IS FORECAST.
* FLOOD STAGE IS 16.0 FEET.
* FORECAST...THE RIVER WILL CREST NEAR 21.0 FEET BY TUESDAY MAY 28. 
  THE RIVER WILL FALL BELOW FLOOD STAGE FRIDAY MAY 31.
* AT STAGES NEAR 21.5 FEET...HIGHWAY 48 NEAR THE INTERSECTION WITH 
  IOWA HIGHWAY 12 NORTH OF AKRON BEGINS TO FLOOD. 

$$

IAC133-193-281919-
/O.NEW.KFSD.FL.W.0023.130528T0456Z-130530T0036Z/
/HOKI4.1.ER.130528T0456Z.130528T1200Z.130529T0036Z.NO/
1019 AM CDT MON MAY 27 2013

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A 

* FLOOD WARNING FOR 
  THE WEST FORK DITCH NEAR HORNICK.
* FROM THIS EVENING TO WEDNESDAY EVENING.
* AT 10AM MONDAY THE STAGE WAS 12.6 FEET.
* MINOR FLOODING IS FORECAST.
* FLOOD STAGE IS 20.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 12 AM TUESDAY AND CREST NEAR 
  21.5 FEET BY TUESDAY MAY 28. THE RIVER WILL FALL BELOW FLOOD STAGE 
  BY TUESDAY MAY 28.
* AT STAGES NEAR 22.0 FEET...ALL AGRICULTURAL LAND IMMEDIATELY 
  ADJACENT TO THE DITCH WILL BE FLOODED AND THE COMMUNITIES OF
  HORNICK AND HOLLY SPRINGS WILL HAVE FLOOD PROBLEMS IF THE LEVEES
  FAIL. 

$$

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

BIG SIOUX RIVER
AKRI4    16.0   16.87 MON 10 AM   21.0  TUE 1 PM  

LITTLE SIOUX RIVER
HOKI4    20.0   12.62 MON 10 AM   21.5  TUE 7 AM  

MG

2 follow-up statements

034 
WGUS83 KFSD 271629
FLSFSD
FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1129 AM CDT MON MAY 27 2013

...THE FLOOD WARNING IS CANCELLED FOR THE FOLLOWING RIVERS IN IOWA...

  ROCK RIVER AT ROCK RAPIDS 

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

  JAMES RIVER AT HURON 
  JAMES RIVER NEAR FORESTBURG 
  JAMES RIVER AT MITCHELL 
  VERMILLION RIVER NEAR DAVIS
  VERMILLION RIVER NEAR WAKONDA 
  BIG SIOUX RIVER AT HAWARDEN 
  BIG SIOUX RIVER AT AKRON
  FLOYD RIVER AT ALTON
  FLOYD RIVER AT LE MARS
  FLOYD RIVER AT MERRILL
  OCHEYEDAN RIVER NEAR SPENCER
  LITTLE SIOUX RIVER AT SPENCER
  LITTLE SIOUX RIVER AT LINN GROVE
  LITTLE SIOUX RIVER AT CHEROKEE
  LITTLE SIOUX RIVER NEAR CORRECTIONVILLE 
  WEST FORK DITCH NEAR HORNICK
   
.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. 

&&

IAC167-282029-
/O.CON.KFSD.FL.W.0006.000000T0000Z-130529T1400Z/
/ALTI4.3.ER.130526T0846Z.130527T1130Z.130528T1400Z.NR/
1129 AM CDT MON MAY 27 2013

THE FLOOD WARNING CONTINUES FOR
  THE FLOYD RIVER AT ALTON.
* UNTIL WEDNESDAY MORNING.
* AT 11AM MONDAY THE STAGE WAS 18.6 FEET.
* FLOOD STAGE IS 12.0 FEET.
* FORECAST...THE RIVER WILL CONTINUE TO FALL TO BELOW FLOOD STAGE BY 
  TUESDAY MAY 28.
* RECENT ACTIVITY...THE RIVER CRESTED AT 19.2 FEET EARLY THIS 
  MORNING. THIS IS PRELIMINARILY A NEW RECORD STAGE FOR THIS SITE
  BEATING THE PREVIOUS RECORD OF 18.54 FEET SET IN JUNE 1983.
* 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. 

$$

IAC149-282029-
/O.CON.KFSD.FL.W.0019.000000T0000Z-130530T0120Z/
/LMRI4.2.ER.130527T1342Z.130527T1800Z.130529T0120Z.NO/
1129 AM CDT MON MAY 27 2013

THE FLOOD WARNING CONTINUES FOR
  THE FLOYD RIVER AT LE MARS.
* UNTIL WEDNESDAY EVENING.
* AT 07AM MONDAY THE STAGE WAS 19.0 FEET.
* FLOOD STAGE IS 20.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 9 AM MONDAY AND CREST NEAR 
  22.5 FEET BY MONDAY MAY 27. THE RIVER WILL FALL BELOW FLOOD STAGE 
  BY TUESDAY MAY 28.
* AT STAGES NEAR 22.0 FEET...APPROXIMATELY 1400 ACRES OF FARM LAND 
  ARE FLOODED. 

$$

IAC149-282029-
/O.CON.KFSD.FL.W.0021.130527T1956Z-130530T0150Z/
/MRLI4.2.ER.130527T1956Z.130528T0600Z.130529T0150Z.NO/
1129 AM CDT MON MAY 27 2013

THE FLOOD WARNING CONTINUES FOR
  THE FLOYD RIVER AT MERRILL.
* FROM THIS AFTERNOON TO WEDNESDAY EVENING.
* AT 07AM MONDAY THE STAGE WAS ESTIMATED AT 9.0 FEET.
* FLOOD STAGE IS 12.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 3 PM MONDAY AND CREST NEAR 
  15.2 FEET BY TUESDAY MAY 28. THE RIVER WILL FALL BELOW FLOOD STAGE 
  BY TUESDAY MAY 28.
* AT STAGES NEAR 15.5 FEET...THE WEST APPROACH TO THE BRIDGE ON 
  PLYMOUTH COUNTY HIGHWAY C44 AT THE GAGING LOCATION BEGINS TO FLOOD. 

$$

IAC041-282029-
/O.CON.KFSD.FL.W.0015.000000T0000Z-000000T0000Z/
/SPWI4.1.ER.000000T0000Z.130528T0600Z.000000T0000Z.NO/
1129 AM CDT MON MAY 27 2013

THE FLOOD WARNING CONTINUES FOR
  THE LITTLE SIOUX RIVER AT SPENCER.
* UNTIL FURTHER NOTICE.
* AT 7AM MONDAY THE STAGE WAS ESTIMATED AT 11.2 FEET.
* FLOOD STAGE IS 10.0 FEET.
* FORECAST...THE RIVER WILL CREST NEAR 13.0 FEET ON TUESDAY MAY 28.
* 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. 

$$

IAC021-041-282029-
/O.CON.KFSD.FL.W.0016.000000T0000Z-000000T0000Z/
/LNNI4.2.ER.130527T0900Z.130531T0000Z.000000T0000Z.NO/
1129 AM CDT MON MAY 27 2013

THE FLOOD WARNING CONTINUES FOR
  THE LITTLE SIOUX RIVER AT LINN GROVE.
* UNTIL FURTHER NOTICE.
* AT 11AM MONDAY THE STAGE WAS 18.2 FEET.
* FLOOD STAGE IS 18.0 FEET.
* RECENT ACTIVITY...THE RIVER ROSE ABOVE FLOOD STAGE ON MONDAY MAY 
  27.
* FORECAST...THE RIVER WILL CREST NEAR 19.8 FEET BY FRIDAY MAY 31 
  THEN BEGIN FALLING.
* AT STAGES NEAR 20.0 FEET...MAJOR FLOODING OF AGRICULTURAL LAND 
  BEGINS ALONG THIS ENTIRE STRETCH OF THE RIVER. 

$$

IAC035-282029-
/O.CON.KFSD.FL.W.0018.000000T0000Z-000000T0000Z/
/CHKI4.3.ER.130527T0235Z.130528T0000Z.000000T0000Z.NR/
1129 AM CDT MON MAY 27 2013

THE FLOOD WARNING CONTINUES FOR
  THE LITTLE SIOUX RIVER AT CHEROKEE.
* UNTIL FURTHER NOTICE.
* AT 10AM MONDAY THE STAGE WAS 26.2 FEET.
* FLOOD STAGE IS 17.0 FEET.
* RECENT ACTIVITY...THE RIVER ROSE ABOVE FLOOD STAGE ON SUNDAY MAY 
  26.
* FORECAST...THE RIVER WILL CREST NEAR 28.5 FEET BY MONDAY MAY 27 
  THEN BEGIN FALLING. THE CURRENT RECORD CREST IS 27.3 FEET SET IN
  JUNE 2010.
* AT STAGES NEAR 27.0 FEET...NUMEROUS HOMES AND BUSINESSES ARE 
  ISOLATED OR FLOODED IN CHEROKEE...AND HIGHWAY 59 SOUTH OF CHEROKEE
  IS FLOODED. 

$$

IAC193-282029-
/O.EXT.KFSD.FL.W.0022.130527T1641Z-130601T2217Z/
/CRRI4.3.ER.130527T1641Z.130530T0600Z.130531T2217Z.NO/
1129 AM CDT MON MAY 27 2013

THE FLOOD WARNING CONTINUES FOR
  THE LITTLE SIOUX RIVER NEAR CORRECTIONVILLE.
* UNTIL SATURDAY AFTERNOON.
* AT 11AM MONDAY THE STAGE WAS 18.8 FEET.
* FLOOD STAGE IS 19.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 12 PM MONDAY AND CREST NEAR 
  21.0 FEET BY MONDAY MAY 27. A SECOND CREST NEAR 22.1 FEET IS 
  POSSIBLE EARLY ON THURSDAY MAY 30 IF THE FORECAST RAINFALL OCCURS.
  THE RIVER WILL FALL BELOW FLOOD STAGE BY FRIDAY MAY 31.
* AT STAGES NEAR 23.0 FEET...IOWA HIGHWAY 31 NORTH BEGINS FLOODING. 
  IF BACON CREEK BETWEEN CORRECTIONVILLE AND CUSHING IS ALSO RUNNING 
  HIGH...WATER WILL BEGIN BACKING UP BACON CREEK AND FLOOD THE
  SOUTHERN PORTIONS OF CORRECTIONVILLE ALONG AND NORTH OF COUNTY
  ROAD D22. 

$$

IAC133-193-282028-
/O.CON.KFSD.FL.W.0023.130528T0456Z-130530T0036Z/
/HOKI4.1.ER.130528T0456Z.130528T1200Z.130529T0036Z.NO/
1129 AM CDT MON MAY 27 2013

THE FLOOD WARNING CONTINUES FOR
  THE WEST FORK DITCH NEAR HORNICK.
* FROM THIS EVENING TO WEDNESDAY EVENING.
* AT 11AM MONDAY THE STAGE WAS 12.5 FEET.
* FLOOD STAGE IS 20.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 12 AM TUESDAY AND CREST NEAR 
  21.5 FEET BY TUESDAY MAY 28. THE RIVER WILL FALL BELOW FLOOD STAGE 
  BY TUESDAY MAY 28.
* AT STAGES NEAR 22.0 FEET...ALL AGRICULTURAL LAND IMMEDIATELY 
  ADJACENT TO THE DITCH WILL BE FLOODED AND THE COMMUNITIES OF
  HORNICK AND HOLLY SPRINGS WILL HAVE FLOOD PROBLEMS IF THE LEVEES
  FAIL. 

$$

IAC167-SDC083-127-282028-
/O.EXT.KFSD.FL.W.0009.000000T0000Z-130601T0742Z/
/HAWI4.1.ER.000000T0000Z.130528T0600Z.130531T0742Z.NO/
1129 AM CDT MON MAY 27 2013

THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER AT HAWARDEN.
* UNTIL LATE FRIDAY NIGHT.
* AT 08AM MONDAY THE STAGE WAS 18.3 FEET.
* FLOOD STAGE IS 15.0 FEET.
* FORECAST...THE RIVER WILL CREST NEAR 19.9 FEET BY TUESDAY MAY 28. 
  THE RIVER WILL FALL BELOW FLOOD STAGE FRIDAY MAY 31.
* AT STAGES NEAR 20.0 FEET...SOME FARM HOUSES ON THE SOUTH DAKOTA 
  SIDE OF THE RIVER ARE ISOLATED BY HIGH WATER. 

$$

IAC149-SDC127-282028-
/O.CON.KFSD.FL.W.0010.000000T0000Z-130601T2046Z/
/AKRI4.3.ER.130527T1025Z.130528T1800Z.130531T2046Z.NO/
1129 AM CDT MON MAY 27 2013

THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER AT AKRON.
* UNTIL SATURDAY AFTERNOON.
* AT 11AM MONDAY THE STAGE WAS 17.0 FEET.
* FLOOD STAGE IS 16.0 FEET.
* RECENT ACTIVITY...THE RIVER ROSE ABOVE FLOOD STAGE ON MONDAY MAY 
  27.
* FORECAST...THE RIVER WILL CREST NEAR 21.0 FEET BY TUESDAY MAY 28. 
  THE RIVER WILL FALL BELOW FLOOD STAGE FRIDAY MAY 31.
* AT STAGES NEAR 21.5 FEET...HIGHWAY 48 NEAR THE INTERSECTION WITH 
  IOWA HIGHWAY 12 NORTH OF AKRON BEGINS TO FLOOD. 

$$

IAC041-282028-
/O.CON.KFSD.FL.W.0017.000000T0000Z-130530T2034Z/
/SPOI4.3.ER.130526T2241Z.130528T0600Z.130529T2034Z.NO/
1129 AM CDT MON MAY 27 2013

THE FLOOD WARNING CONTINUES FOR
  THE OCHEYEDAN RIVER NEAR SPENCER.
* UNTIL THURSDAY AFTERNOON.
* AT 10AM MONDAY THE STAGE WAS 9.8 FEET.
* FLOOD STAGE IS 8.0 FEET.
* FORECAST...THE RIVER WILL CREST NEAR 10.5 FEET BY TUESDAY MAY 28. 
  THE RIVER WILL FALL BELOW FLOOD STAGE WEDNESDAY MAY 29.
* AT STAGES NEAR 10.5 FEET...MAJOR AGRICULTURAL FLOODING BEGINS AND 
  SOME COUNTY ROADS ARE ALSO FLOODED. 

$$

SDC125-282028-
/O.CON.KFSD.FL.W.0007.000000T0000Z-130603T0900Z/
/DVSS2.2.ER.130527T1123Z.130528T1800Z.130602T0900Z.NO/
1129 AM CDT MON MAY 27 2013

THE FLOOD WARNING CONTINUES FOR
  THE VERMILLION RIVER NEAR DAVIS.
* UNTIL MONDAY JUNE 03.
* AT 07AM MONDAY THE STAGE WAS 11.3 FEET.
* FLOOD STAGE IS 11.0 FEET.
* RECENT ACTIVITY...THE RIVER ROSE ABOVE FLOOD STAGE ON MONDAY MAY 
  27.
* FORECAST...THE RIVER WILL CREST NEAR 13.3 FEET BY TUESDAY MAY 28. 
  THE RIVER WILL FALL BELOW FLOOD STAGE SUNDAY JUNE 02.
* AT STAGES NEAR 13.5 FEET...WATER REACHES THE BOTTOM OF THE BRIDGE 1
  MILE WEST OF DAVIS ON HIGHWAY 18. 

$$

SDC027-282028-
/O.EXT.KFSD.FL.W.0008.130529T1415Z-130604T1000Z/
/WKAS2.2.ER.130529T1415Z.130531T0600Z.130603T1000Z.NR/
1129 AM CDT MON MAY 27 2013

...FLOOD WARNING EXTENDED UNTIL 5 AM TUESDAY... 
THE FLOOD WARNING CONTINUES FOR
  THE VERMILLION RIVER NEAR WAKONDA.
* FROM WEDNESDAY MORNING TO TUESDAY JUNE 04.
* AT 08AM MONDAY THE STAGE WAS 5.3 FEET.
* FLOOD STAGE IS 14.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 9 AM WEDNESDAY AND CREST NEAR 
  16.7 FEET BY FRIDAY MAY 31. THE RIVER WILL FALL BELOW FLOOD STAGE 
  BY MONDAY JUNE 03.
* AT STAGES NEAR 16.5 FEET...WATER REACHES THE BOTTOM OF THE BRIDGE 
  ON 461ST AVENUE NORTHEAST OF COLFAX CORNER...AND MAJOR FLOODING OF 
  AGRICULTURAL LAND SOUTH OF DAVIS BEGINS. 

$$

SDC005-282028-
/O.EXT.KFSD.FL.W.0011.130602T1800Z-000000T0000Z/
/HURS2.1.ER.130602T1800Z.130603T0600Z.000000T0000Z.NO/
1129 AM CDT MON MAY 27 2013

THE FLOOD WARNING CONTINUES FOR
  THE JAMES RIVER AT HURON.
* FROM SUNDAY AFTERNOON UNTIL FURTHER NOTICE.
* AT 10AM MONDAY THE STAGE WAS 10.2 FEET.
* FLOOD STAGE IS 11.0 FEET.
* FORECAST...THE RIVER WILL RISE ABOVE FLOOD STAGE ON SUNDAY JUNE 2.
* AT STAGES NEAR 11.0 FEET...SIGNIFICANT AMOUNTS OF RURAL AREAS WILL 
  EXPERIENCE FLOODING. 

$$

SDC111-282028-
/O.EXT.KFSD.FL.W.0012.130528T2125Z-000000T0000Z/
/FORS2.1.ER.130528T2125Z.130531T0000Z.000000T0000Z.NO/
1129 AM CDT MON MAY 27 2013

THE FLOOD WARNING CONTINUES FOR
  THE JAMES RIVER NEAR FORESTBURG.
* FROM TUESDAY AFTERNOON UNTIL FURTHER NOTICE.
* AT 10AM MONDAY THE STAGE WAS 8.5 FEET.
* FLOOD STAGE IS 12.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 4 PM TUESDAY AND CREST NEAR 
  13.7 FEET BY THURSDAY MAY 30.
* AT STAGES NEAR 14.0 FEET...MANY OF THE COUNTY AND TOWNSHIP ROADS 
  ALONG THE RIVER ARE UNDER WATER. 

$$

SDC035-061-282028-
/O.EXT.KFSD.FL.W.0013.130531T1030Z-000000T0000Z/
/JRMS2.1.ER.130531T1030Z.130602T0600Z.000000T0000Z.NO/
1129 AM CDT MON MAY 27 2013

THE FLOOD WARNING CONTINUES FOR
  THE JAMES RIVER AT MITCHELL.
* FROM LATE THURSDAY NIGHT UNTIL FURTHER NOTICE.
* AT 10AM MONDAY THE STAGE WAS 13.5 FEET.
* FLOOD STAGE IS 17.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 5 AM FRIDAY AND CREST NEAR 
  18.4 FEET BY SUNDAY JUNE 02.
* AT STAGES NEAR 17.0 FEET...THE LOWER BANKS OVERFLOW. 

$$

IAC119-271659-
/O.CAN.KFSD.FL.W.0020.000000T0000Z-130530T0651Z/
/RAPI4.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1129 AM CDT MON MAY 27 2013

THE FLOOD WARNING IS CANCELLED FOR
  THE ROCK RIVER AT ROCK RAPIDS.
* AT 10AM MONDAY THE STAGE WAS 8.5 FEET.
* FLOOD STAGE IS 13.0 FEET.
* FORECAST...THE RIVER WILL CREST BELOW FLOOD STAGE AT 12.4 FEET 7 PM
  TUESDAY.
* 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

FLOYD RIVER
ALTI4    12.0   18.59 MON 11 AM                     19.3  MON MAY 27
LMRI4    20.0   19.00 MON 7 AM    22.5  MON 1 PM 
MRLI4    12.0   E9.00 MON 7 AM    15.2  TUE 1 AM 

LITTLE SIOUX RIVER
SPWI4    10.0  E11.20 MON 7 AM    13.0  TUE 1 AM  
LNNI4    18.0   18.23 MON 11 AM   19.8  THU 7 PM  
CHKI4    17.0   26.25 MON 10 AM   28.5  MON 7 PM  
CRRI4    19.0   18.79 MON 11 AM   22.1  THU 1 AM  
HOKI4    20.0   12.53 MON 11 AM   21.5  TUE 7 AM  

BIG SIOUX RIVER
HAWI4    15.0   18.30 MON 8 AM    19.9  TUE 1 AM  
AKRI4    16.0   17.04 MON 11 AM   21.0  TUE 1 PM  

OCHEYEDAN RIVER
SPOI4     8.0    9.79 MON 11 AM   10.5  TUE 1 AM  

VERMILLION RIVER
DVSS2    11.0   11.30 MON 7 AM    13.3  TUE 1 PM  
WKAS2    14.0    5.34 MON 9 AM    16.7  FRI 1 AM  

JAMES RIVER
HURS2    11.0   10.20 MON 10 AM   11.1  MON 1 AM 
FORS2    12.0    8.52 MON 10 AM   13.7  THU 7 PM 
JRMS2    17.0   13.54 MON 11 AM   18.4  SUN 1 AM 

ROCK RIVER
RAPI4    13.0    8.54 MON 10 AM   12.4  TUE 7 PM 

MG

696 
WGUS83 KFSD 280224
FLSFSD
FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
924 PM CDT MON MAY 27 2013

...THE FLOOD WARNING IS CANCELLED FOR THE FOLLOWING RIVERS IN IOWA...

  WEST FORK DITCH NEAR HORNICK 

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

  JAMES RIVER AT HURON 
  JAMES RIVER NEAR FORESTBURG 
  JAMES RIVER AT MITCHELL 
  VERMILLION RIVER NEAR DAVIS 
  VERMILLION RIVER NEAR WAKONDA
  BIG SIOUX RIVER AT HAWARDEN 
  BIG SIOUX RIVER AT AKRON 
  FLOYD RIVER AT ALTON 
  OCHEYEDAN RIVER NEAR SPENCER 
  LITTLE SIOUX RIVER AT SPENCER
  LITTLE SIOUX RIVER AT LINN GROVE
  LITTLE SIOUX RIVER AT CHEROKEE
  LITTLE SIOUX RIVER NEAR CORRECTIONVILLE 
   
.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-SDC083-127-290624-
/O.EXT.KFSD.FL.W.0009.000000T0000Z-130531T2000Z/
/HAWI4.1.ER.000000T0000Z.130528T0600Z.130530T2000Z.NO/
924 PM CDT MON MAY 27 2013

THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER AT HAWARDEN.
* UNTIL FRIDAY AFTERNOON.
* AT 08PM MONDAY THE STAGE WAS 19.4 FEET.
* FLOOD STAGE IS 15.0 FEET.
* FORECAST...THE RIVER WILL CREST NEAR 19.9 FEET BY TUESDAY MAY 28. 
  THE RIVER WILL FALL BELOW FLOOD STAGE THURSDAY MAY 30.
* AT STAGES NEAR 20.0 FEET...SOME FARM HOUSES ON THE SOUTH DAKOTA 
  SIDE OF THE RIVER ARE ISOLATED BY HIGH WATER. 

$$

IAC149-SDC127-290624-
/O.EXT.KFSD.FL.W.0010.000000T0000Z-130601T0843Z/
/AKRI4.3.ER.130527T1025Z.130528T1800Z.130531T0843Z.NO/
924 PM CDT MON MAY 27 2013

THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER AT AKRON.
* UNTIL LATE FRIDAY NIGHT.
* AT 09PM MONDAY THE STAGE WAS 19.5 FEET.
* FLOOD STAGE IS 16.0 FEET.
* FORECAST...THE RIVER WILL CREST NEAR 20.6 FEET BY TUESDAY MAY 28. 
  THE RIVER WILL FALL BELOW FLOOD STAGE FRIDAY MAY 31.
* AT STAGES NEAR 20.0 FEET...HIGHWAY 48 NEAR AKRON IS FLOODED. 

$$

IAC167-290624-
/O.EXT.KFSD.FL.W.0006.000000T0000Z-130529T1518Z/
/ALTI4.3.ER.130526T0846Z.130527T1130Z.130528T1518Z.NR/
924 PM CDT MON MAY 27 2013

...FLOOD WARNING EXTENDED UNTIL 10 AM WEDNESDAY... 
THE FLOOD WARNING CONTINUES FOR
  THE FLOYD RIVER AT ALTON.
* UNTIL WEDNESDAY MORNING.
* AT 09PM MONDAY THE STAGE WAS 16.8 FEET.
* FLOOD STAGE IS 12.0 FEET.
* FORECAST...THE RIVER WILL CONTINUE TO FALL TO BELOW FLOOD STAGE BY 
  TUESDAY MAY 28.
* AT STAGES NEAR 16.0 FEET...SIGNIFICANT AMOUNTS OF CROP AND PASTURE 
  LAND ARE FLOODED. 

$$

IAC041-290624-
/O.CON.KFSD.FL.W.0015.000000T0000Z-000000T0000Z/
/SPWI4.1.ER.000000T0000Z.130528T0600Z.000000T0000Z.NO/
924 PM CDT MON MAY 27 2013

THE FLOOD WARNING CONTINUES FOR
  THE LITTLE SIOUX RIVER AT SPENCER.
* UNTIL FURTHER NOTICE.
* AT 06PM MONDAY THE STAGE WAS 11.6 FEET.
* FLOOD STAGE IS 10.0 FEET.
* FORECAST...THE RIVER WILL CREST NEAR 11.9 FEET BY TUESDAY MAY 28 
  THEN BEGIN FALLING.

$$

IAC021-041-290624-
/O.CON.KFSD.FL.W.0016.000000T0000Z-000000T0000Z/
/LNNI4.1.ER.130527T0900Z.130531T0000Z.000000T0000Z.NO/
924 PM CDT MON MAY 27 2013

THE FLOOD WARNING CONTINUES FOR
  THE LITTLE SIOUX RIVER AT LINN GROVE.
* UNTIL FURTHER NOTICE.
* AT 09PM MONDAY THE STAGE WAS 18.1 FEET.
* FLOOD STAGE IS 18.0 FEET.
* FORECAST...THE RIVER WILL CREST NEAR 19.3 FEET BY FRIDAY MAY 31 
  THEN BEGIN FALLING.
* AT STAGES NEAR 20.0 FEET...MAJOR FLOODING OF AGRICULTURAL LAND 
  BEGINS ALONG THIS ENTIRE STRETCH OF THE RIVER. 

$$

IAC035-290624-
/O.CON.KFSD.FL.W.0018.000000T0000Z-000000T0000Z/
/CHKI4.3.ER.130527T0235Z.130527T1915Z.000000T0000Z.NR/
924 PM CDT MON MAY 27 2013

THE FLOOD WARNING CONTINUES FOR
  THE LITTLE SIOUX RIVER AT CHEROKEE.
* UNTIL FURTHER NOTICE.
* AT 08PM MONDAY THE STAGE WAS 26.3 FEET.
* FLOOD STAGE IS 17.0 FEET.
* RECENT ACTIVITY...THE RIVER ROSE ABOVE FLOOD STAGE ON SUNDAY MAY 
  26.
* FORECAST...THE RIVER WILL CONTINUE RISING TO NEAR 26.6 FEET BY 1 AM
  TUESDAY.  ADDITIONAL RISES MAY BE POSSIBLE THEREAFTER.
* AT STAGES NEAR 27.0 FEET...NUMEROUS HOMES AND BUSINESSES ARE 
  ISOLATED OR FLOODED IN CHEROKEE...AND HIGHWAY 59 SOUTH OF CHEROKEE IS
  FLOODED. 

$$

IAC193-290624-
/O.EXT.KFSD.FL.W.0022.000000T0000Z-130601T1824Z/
/CRRI4.3.ER.130527T1650Z.130530T0600Z.130531T1824Z.NO/
924 PM CDT MON MAY 27 2013

THE FLOOD WARNING CONTINUES FOR
  THE LITTLE SIOUX RIVER NEAR CORRECTIONVILLE.
* UNTIL SATURDAY AFTERNOON.
* AT 09PM MONDAY THE STAGE WAS 23.0 FEET.
* FLOOD STAGE IS 19.0 FEET.
* RECENT ACTIVITY...THE RIVER ROSE ABOVE FLOOD STAGE ON MONDAY MAY 
  27.
* FORECAST...THE RIVER WILL CREST NEAR 23.9 FEET BY THURSDAY MAY 30. 
  THE RIVER WILL FALL BELOW FLOOD STAGE FRIDAY MAY 31.
* AT STAGES NEAR 23.5 FEET...THE WATER REACHES THE BOTTOM OF THE 
  BRIDGE ON COUNTY ROAD L36 NORTHWEST OF CORRECTIONVILLE...THE SOUTHERN
  PORTIONS OF CORRECTIONVILLE WILL BE SIGNIFICANTLY AFFECTED BY 
  FLOODING...AND MANY SEWERS...HOMES...AND ROADS WILL BE FLOODED. 

$$

IAC133-193-280254-
/O.CAN.KFSD.FL.W.0023.000000T0000Z-130530T0036Z/
/HOKI4.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
924 PM CDT MON MAY 27 2013

THE FLOOD WARNING IS CANCELLED FOR
  THE WEST FORK DITCH NEAR HORNICK.
* AT 09PM MONDAY THE STAGE WAS 17.8 FEET.
* FLOOD STAGE IS 20.0 FEET.
* FORECAST...THE RIVER WILL CREST BELOW FLOOD STAGE AT 19.9 FEET 7 AM
  TUESDAY.
* AT STAGES NEAR 20.0 FEET...LARGE AREAS OF AGRICULTURAL LAND WILL 
  FLOOD IF THE LEVEES FAIL. 

$$

SDC125-290624-
/O.EXT.KFSD.FL.W.0007.000000T0000Z-130601T1800Z/
/DVSS2.2.ER.130527T1123Z.130528T1200Z.130531T1800Z.NO/
924 PM CDT MON MAY 27 2013

THE FLOOD WARNING CONTINUES FOR
  THE VERMILLION RIVER NEAR DAVIS.
* UNTIL SATURDAY AFTERNOON.
* AT 04PM MONDAY THE STAGE WAS 12.2 FEET.
* FLOOD STAGE IS 11.0 FEET.
* FORECAST...THE RIVER WILL CREST NEAR 13.0 FEET BY TUESDAY MAY 28. 
  THE RIVER WILL FALL BELOW FLOOD STAGE FRIDAY MAY 31.
* AT STAGES NEAR 13.0 FEET...MODERATE FLOODING OF AGRICULTURAL LAND 
  BEGINS. 

$$

SDC027-290624-
/O.CON.KFSD.FL.W.0008.130529T1415Z-130604T1000Z/
/WKAS2.2.ER.130529T1415Z.130531T0600Z.130603T1000Z.NR/
924 PM CDT MON MAY 27 2013

THE FLOOD WARNING CONTINUES FOR
  THE VERMILLION RIVER NEAR WAKONDA.
* FROM WEDNESDAY MORNING TO TUESDAY JUNE 04.
* AT 08AM MONDAY THE STAGE WAS 5.3 FEET.
* FLOOD STAGE IS 14.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 9 AM WEDNESDAY AND CREST NEAR 
  16.7 FEET BY FRIDAY MAY 31. THE RIVER WILL FALL BELOW FLOOD STAGE 
  BY MONDAY JUNE 03.
* AT STAGES NEAR 16.5 FEET...WATER REACHES THE BOTTOM OF THE BRIDGE 
  ON 461ST AVENUE NORTHEAST OF COLFAX CORNER...AND MAJOR FLOODING OF 
  AGRICULTURAL LAND SOUTH OF DAVIS BEGINS. 

$$

IAC041-290624-
/O.EXT.KFSD.FL.W.0017.000000T0000Z-130530T1851Z/
/SPOI4.2.ER.130526T2241Z.130528T0130Z.130529T1851Z.NO/
924 PM CDT MON MAY 27 2013

THE FLOOD WARNING CONTINUES FOR
  THE OCHEYEDAN RIVER NEAR SPENCER.
* UNTIL THURSDAY AFTERNOON.
* AT 08PM MONDAY THE STAGE WAS 9.9 FEET.
* FLOOD STAGE IS 8.0 FEET.
* FORECAST...THE RIVER IS NEAR CREST AND WILL FALL TO BELOW FLOOD STAGE 
  BY WEDNESDAY MAY 29.
* AT STAGES NEAR 9.5 FEET...SIGNIFICANT AMOUNTS OF PASTURE AND OTHER 
  FARM LAND BEGIN FLOODING. 

$$

SDC005-290624-
/O.EXT.KFSD.FL.W.0011.130603T0000Z-000000T0000Z/
/HURS2.1.ER.130603T0000Z.130603T0000Z.000000T0000Z.NO/
924 PM CDT MON MAY 27 2013

THE FLOOD WARNING CONTINUES FOR
  THE JAMES RIVER AT HURON.
* FROM SUNDAY EVENING UNTIL FURTHER NOTICE.
* AT 08PM MONDAY THE STAGE WAS 10.2 FEET.
* FLOOD STAGE IS 11.0 FEET.
* FORECAST...THE RIVER IS EXPECTED TO RISE TO NEAR FLOOD STAGE 7 PM 
  SUNDAY.
* AT STAGES NEAR 11.0 FEET...SIGNIFICANT AMOUNTS OF RURAL AREAS WILL 
  EXPERIENCE FLOODING. 

$$

SDC111-290624-
/O.EXT.KFSD.FL.W.0012.130528T2230Z-000000T0000Z/
/FORS2.1.ER.130528T2230Z.130530T1200Z.000000T0000Z.NO/
924 PM CDT MON MAY 27 2013

THE FLOOD WARNING CONTINUES FOR
  THE JAMES RIVER NEAR FORESTBURG.
* FROM TUESDAY AFTERNOON UNTIL FURTHER NOTICE.
* AT 08PM MONDAY THE STAGE WAS 8.8 FEET.
* FLOOD STAGE IS 12.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 5 PM TUESDAY AND CREST NEAR 
  13.6 FEET BY THURSDAY MAY 30.
* AT STAGES NEAR 14.0 FEET...MANY OF THE COUNTY AND TOWNSHIP ROADS 
  ALONG THE RIVER ARE UNDER WATER. 

$$

SDC035-061-290624-
/O.EXT.KFSD.FL.W.0013.130531T1800Z-000000T0000Z/
/JRMS2.1.ER.130531T1800Z.130602T1200Z.000000T0000Z.NO/
924 PM CDT MON MAY 27 2013

THE FLOOD WARNING CONTINUES FOR
  THE JAMES RIVER AT MITCHELL.
* FROM FRIDAY AFTERNOON UNTIL FURTHER NOTICE.
* AT 08PM MONDAY THE STAGE WAS 13.7 FEET.
* FLOOD STAGE IS 17.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 1 PM FRIDAY AND CREST NEAR 
  18.3 FEET BY SUNDAY JUNE 02.
* AT STAGES NEAR 17.0 FEET...THE LOWER BANKS OVERFLOW. 

$$

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

BIG SIOUX RIVER
HAWI4    15.0   19.40 MON 8 PM    19.9  TUE 1 AM 
AKRI4    16.0   19.46 MON 9 PM    20.6  TUE 1 PM 

FLOYD RIVER
ALTI4    12.0   16.79 MON 9 PM                      19.3  MON MAY 27

LITTLE SIOUX RIVER
SPWI4    10.0   11.65 MON 6 PM    11.9  TUE 1 AM 
LNNI4    18.0   18.11 MON 9 PM    19.3  THU 7 PM 
CHKI4    17.0   26.27 MON 8 PM                      27.9  MON MAY 27
CRRI4    19.0   22.97 MON 9 PM    23.9  THU 1 AM 
HOKI4    20.0   17.81 MON 9 PM    19.9  TUE 7 AM 

VERMILLION RIVER
DVSS2    11.0   12.20 MON 4 PM    13.0  TUE 7 AM
WKAS2    14.0    5.34 MON 9 AM    16.7  FRI 1 AM

OCHEYEDAN RIVER
SPOI4     8.0    9.85 MON 9 PM                       9.9  MON MAY 27

JAMES RIVER
HURS2    11.0   10.18 MON 8 PM    11.0  SUN 7 PM
FORS2    12.0    8.77 MON 8 PM    13.6  THU 7 AM
JRMS2    17.0   13.74 MON 9 PM    18.3  SUN 7 AM

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 27, 7:21 AM CDT, 2 hours 58 minutes earlier.

Area forecast discussion, May 27, 7:21 AM CDT, 2 hours 58 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SIOUX FALLS SD
721 AM CDT MON MAY 27 2013

.SHORT TERM...(TODAY AND TONIGHT)
ISSUED AT 531 AM CDT MON MAY 27 2013

ANOTHER NIGHT OF HEAVY RAIN IS WINDING DOWN ACROSS THE AREA AS AN
MCS DIVES SOUTHEAST THROUGH EASTERN NEBRASKA AND WESTERN IOWA. OUR
AREA IS CURRENTLY IN THE STEADY STRATIFORM REGION OF THE
THUNDERSTORM COMPLEX. EXPECT THIS RAIN TO BEGIN TO DISSIPATE AND
PUSH OFF TO THE EAST THROUGH THE EARLY MORNING HOURS. AGAIN LOOKS
LIKE A LULL IN THE PRECIP WILL OCCUR DURING MUCH OF THE DAY...WITH
SUBSIDENCE BEHIND THE MCV. TEMPERATURES TRICKY AGAIN. TEND TO THINK
STRATUS HOLDS TOUGH FOR MUCH OF THE DAY...WITH A COOL AND MOIST EAST
SOUTHEASTERLY WIND THROUGH THE DAY. THUS WENT AHEAD AND LOWERED
HIGHS A FEW DEGREES. ALTHOUGH IF STRATUS HOLDS LIKE YESTERDAY...HIGHS
WILL ONCE AGAIN BE SEVERAL DEGREES COOLER THAN FORECAST. SOMETHING
THE DAY SHIFT WILL HAVE TO MONITOR.

THEN ATTENTION TURNS TO WHAT HAPPENS WITH CONVECTION THIS EVENING
INTO THE OVERNIGHT. A MUCH STRONGER WAVE THAN PREVIOUS NIGHTS IS
FORECAST TO EJECT OUT OF THE ROCKIES INTO OUR AREA. THE LOWER
RESOLUTION GLOBAL MODELS USE THIS AS A TRIGGER FOR A LARGE AREA OF
SHOWERS AND THUNDERSTORMS OVER OUR ENTIRE CWA. MEANWHILE SOME OF THE
HIGHER RES MODELS SHOW A DIFFERENT EVOLUTION. WHILE THESE HAVE BEEN
FAR FROM PERFECT THE PAST FEW NIGHTS...THEY HAVE SEEMED TO CAPTURE
THE OVERALL EVOLUTION OF CONVECTION A BIT BETTER. SOME OF THE
GUIDANCE LEANED TOWARDS INCLUDE THE WRF ARW...GEM REGIONAL AND THE
NCAR WRF ENSEMBLES. THESE SUGGEST THAT CONVECTION WILL INITIALLY
FIRE ALONG THE LOW LEVEL BOUNDARY...WHICH BY NOW HAS BEEN PUSHED
WELL SOUTH INTO SOUTHERN NEBRASKA. AS THE WAVE EJECTS OUT OF THE
ROCKIES...EXPECT STORMS TO GO IN WESTERN NEBRASKA THIS AFTERNOON OR
EVENING AS WELL. CORFIDI VECTORS SUGGEST THAT THIS THUNDERSTORM
COMPLEX SHOULD EVENTUALLY PUSH EAST AND MAYBE EVEN SOUTHEAST...WHICH
SHOULD KEEP IT MAINLY IN NEBRASKA AND IOWA. THIS IS SHOWN WELL BY
MOST OF THE HI RES MODELS AND ENSEMBLES MENTIONED ABOVE. BUT IS
DIFFERENT THAN THE GLOBAL MODELS...WHICH MOVE THE AREA MORE WITH THE
MEAN WIND...A MORE UNLIKELY SCENARIO AND LIKELY A CULPRIT OF LOWER
RESOLUTION. MEANWHILE ANOTHER AREA OF THUNDERSTORMS SHOULD FORM OVER
THE WESTERN DAKOTAS IN THE AREA OF GREATEST UPPER LEVEL SUPPORT.
MOST HI RES SOLUTIONS HAVE THIS WEAKENING...AS IT RUNS INTO A LESS
UNSTABLE ATMOSPHERE. LOW LEVEL THETAE ADVECTION WILL LIKELY BE
WEAKER TONIGHT...POSSIBLY WEAKENED EVEN MORE IF THE CONVECTION TO
OUR SOUTH RUNS AHEAD AND CUTS OFF OUR MOISTURE INFLOW.

SO...THOUGHT IS WE SEE AT LEAST TWO THUNDERSTORM COMPLEXES TONIGHT.
ONE THAT RACES ACROSS NEBRASKA AND IOWA. WILL END UP PUTTING OUT
ANOTHER FLASH FLOOD WATCH FOR PORTIONS OF NORTHEAST NEBRASKA AND
NORTHWEST IOWA FOR TONIGHT...GIVEN THIS EXPECTED EVOLUTION AND THE
HEAVY RAINS THE PAST FEW NIGHTS. THE OTHER AREA OVER THE WESTERN
DAKOTAS SHOULD TEND TO WEAKEN...ALTHOUGH STILL THINKING AT LEAST
SOME ACTION GETS INTO THE REMAINDER OF OUR CWA. OVERALL THINK SEVERE
THREAT WILL REMAIN LOW...WITH MUCAPE NOT TOO IMPRESSIVE AND SHEAR
RATHER LOW...BEST THREAT THUS SHOULD REMAIN SOUTH. A COUPLE THINGS
TO WATCH WILL BE WHERE THE THE CONVECTION GETS GOING IN NEBRASKA
TODAY. THE FURTHER NORTH...THE MORE OF OUR CWA THAT COULD BE
IMPACTED BY HEAVY RAIN. KEEP IN MIND THAT THERE IS A STRONG WAVE
MOVING THROUGH THE PLAINS...AND A FEW AREAS OF HEAVY RAIN ARE THUS
LIKELY. THE ABOVE REPRESENTS THE CURRENT THOUGHT OF WHAT IS MOST
LIKELY...BUT UNCERTAINTY REMAINS HIGH. SO WHILE CURRENT INDICATIONS
ARE THAT TONIGHTS FLOODING THREAT MAY BE FOCUSED OVER NEBRASKA AND
IOWA...AREAS IN SOUTH DAKOTA THAT HAVE RECEIVED HEAVY RAIN THE PAST
FEW NIGHTS SHOULD NOT LET THEIR GUARD DOWN.

.LONG TERM...(TUESDAY THROUGH SUNDAY)
ISSUED AT 531 AM CDT MON MAY 27 2013

TUESDAY ACTUALLY LOOKS LIKE IT MIGHT BE A DECENT DAY. LARGE SCALE
SUBSIDENCE BEHIND TONIGHTS WAVE SHOULD ALLOW FOR DECREASING CLOUDS
THROUGH THE DAY AND HIGHS REBOUNDING TO AROUND 80. AS THE LOW LEVEL
JET INCREASES AT NIGHT ADVECTING IN HIGH THETAE AIR...THE THREAT OF
ELEVATED CONVECTION EXISTS AGAIN. WE MAY DRY OUT ENOUGH
TUESDAY...THAT WE MIGHT NOT QUITE BE ABLE TO GET STUFF GOING TUESDAY
NIGHT. THUS WILL LEAVE JUST A CHANCE IN THE GRIDS...BUT IF STORMS TO
FORM HEAVY RAIN WOULD AGAIN BE POSSIBLE. BUT SEVERE THREAT STILL
SEEMS ON THE LOW SIDE THROUGH TUESDAY NIGHT.

BY WEDNESDAY THE LARGE SCALE TROUGH PUSHES INTO THE PLAINS. THIS
THUS WILL BRING AN INCREASING THUNDERSTORM THREAT. SEVERE THREAT AND
TIMING OF CONVECTION UNCERTAIN THIS FAR OUT AND DEPENDENT ON ANY
DEBRIS CLOUD COVER. SHEAR IS MARGINAL...BUT IT APPEARS THAT DEEP LAYER
SHEAR MAY END UP AROUND 30 KTS...MUCH OF WHICH IS ACTUALLY IN THE
LOWEST FEW KM. WITH ANY SUN INSTABILITY SHOULD BE AROUND 2000 J/KG.
CAPPING AROUND 700 MB...BUT SHOULD GIVE WAY BY AFTERNOON AND EVENING
WITH SHARP HEIGHT FALLS EXPECTED. THUS ASSUMING THAT ANYTHING THAT
FORMS TUESDAY NIGHT GETS ON OUT AND WE HEAT UP...WEDNESDAY MAY
FEATURE AN ELEVATED SEVERE THREAT ACROSS MOST OF THE CWA...WITH
SUPERCELLS A POSSIBILITY. /

ON THURSDAY...GOOD AGREEMENT EXISTS BETWEEN THE 00Z GFS AND ECMWF IN
PLACING THE LARGE UPPER LOW CENTERED OVER THE NORTHWESTERN PLAINS.
THEY ARE ALSO IN GOOD AGREEMENT IN SHOWING ONE FINAL SHORT WAVE
PASSAGE MOVING NORTHEASTWARD ACROSS OUR AREA ON THE SOUTHEAST SIDE
OF THE LONG WAVE VORTEX. THEREFORE KEPT LIKELY POPS GOING FOR AREAS
ALONG AND EAST OF A HURON SD TO WAGNER SD LINE FOR THURSDAY. HOWEVER
WITH THE ORIENTATION OF THE SURFACE LOW AND OTHER LOW LEVEL
FEATURES...THE RAINFALL MAY NOT BE HEAVY THOUGH. THEN BEGINNING
THURSDAY NIGHT...THINGS BEGIN TO QUIET DOWN. THE GENERAL TREND HAS
BEEN A LOWERING OF POPS LATE IN THE WEEK AND THAT TREND MAY CONTINUE
AS THE DAYS PROGRESS THROUGH MID WEEK. CERTAINLY HEAVY RAINFALL DOES
NOT LOOK TO BE A THREAT FROM THURSDAY NIGHT ONWARD. CONCERNING
TEMPERATURES...THEY STILL LOOK BELOW NORMAL FOR BOTH HIGHS AND LOWS.

&&

.AVIATION...(FOR THE 12Z TAFS THROUGH 12Z TUESDAY MORNING)
ISSUED AT 715 AM CDT MON MAY 27 2013

OVERALL CONFIDENCE IS LOW FOR THE TAFS FOR THE NEXT 24 HOURS. AT
THIS TIME...A LOT OF THE FORECAST AREA HAS GONE TO VFR. THE ONE
BIG EXCEPTION IS ACROSS SOUTHWEST MINNESOTA AND THE BROOKINGS/
MADISON SD AREA WHERE LIFR CONDITIONS ARE PREVALENT. THE VARIOUS
MODEL HUMIDITY TIME SECTIONS AND SOUNDINGS ARE OF VERY LITTLE HELP
AS THEY ARE CURRENTLY NOT PICKING UP ON THE VFR CONDITIONS WHERE
THEY EXIST. VFR DOES EXIST FOR THE THREE TAF SITES...AND LEFT THEM
SO FOR THE MORNING HOURS. THE BIG QUESTION MARK IS IF MVFR
CEILINGS WILL TRY TO DEVELOP IN THE LATE MORNING AND EARLY
AFTERNOON HOURS DUE TO THE WET GROUND. THAT COULD HAPPEN...
POSSIBLY ONLY TO GO VFR AGAIN BY MID AFTERNOON PERHAPS. SO THIS
WILL NEED MONITORED CLOSELY. ANOTHER SHORT WAVE OF ENERGY LIFTS
NORTHEASTWARD TONIGHT WHICH WILL LIKELY GIVE THUNDERSTORMS FOR
SIOUX CITY AND SIOUX FALLS...WITH HURON POSSIBLY STAYING DRY. THE
HEAVIER RAIN MAY STAY IN NORTHWEST IA INCLUDING SIOUX CITY.

&&

.FSD WATCHES/WARNINGS/ADVISORIES...
SD...FLASH FLOOD WATCH FROM 7 PM CDT THIS EVENING THROUGH TUESDAY
     MORNING FOR SDZ067-070-071.

MN...NONE.
IA...FLASH FLOOD WATCH FROM 7 PM CDT THIS EVENING THROUGH TUESDAY
     MORNING FOR IAZ001>003-012>014-020>022-031-032.

NE...FLASH FLOOD WATCH FROM 7 PM CDT THIS EVENING THROUGH TUESDAY
     MORNING FOR NEZ013-014.

&&

SHORT TERM...CHENARD
LONG TERM...CHENARD/MJF
AVIATION...

Hazardous weather outlook, May 27, 6:33 AM CDT, 3 hours 46 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SIOUX FALLS SD
633 AM CDT MON MAY 27 2013

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-
741 AM CDT MON MAY 27 2013

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

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS...
ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS IS EXPECTED TO PUSH IN
FROM OUR SOUTHWEST THIS EVENING INTO THE OVERNIGHT. THE HEAVIEST OF
THE ACTIVITY IS EXPECTED TO BE ACROSS NORTHWEST IOWA AND EXTREME
SOUTHEAST SOUTH DAKOTA. HAIL UP TO DIME SIZE AND WINDS GUSTING TO 50
MPH WILL BE THE MAIN THREATS WITH ANY STORMS THAT MOVE THROUGH THAT
REGION TONIGHT. ELSEWHERE...THUNDERSTORMS ARE STILL POSSIBLE...BUT
CURRENT THOUGHTS ARE THAT THESE WILL BE OF A LOWER INTENSITY.

FLOODING...
SEVERAL SMALL CREEKS AND STREAMS ACROSS EXTREME SOUTHEAST SOUTH
DAKOTA AND NORTHWEST IOWA LIKELY REMAIN IN FLOOD EARLY THIS
MORNING. ADDITIONAL HEAVY RAIN MAY OCCUR THIS EVENING INTO THE
OVERNIGHT AS THUNDERSTORMS MOVE BACK INTO THE AREA. THUS
ADDITIONAL FLASH FLOODING OF AREA CREEKS AND STREAMS IS POSSIBLE.

RIVER FLOODING IS ALSO OCCURRING OR FORECAST TO OCCUR ALONG
PORTIONS OF THE JAMES RIVER...VERMILLION RIVER...BIG SIOUX
IVER...FLOYD RIVER...OCHEYEDAN RIVER AND THE LITTLE SIOUX RIVER.
SEE ASSOCIATED FLOOD WARNINGS FOR MORE INFORMATION ON TIMING AND
EXPECTED CREST HEIGHTS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

ANOTHER ROUND OF THUNDERSTORMS IS POSSIBLE TUESDAY NIGHT.
WIDESPREAD SEVERE WEATHER IS NOT EXPECTED...BUT AN ISOLATED
STRONGER STORM PRODUCING QUARTER SIZE HAIL IS POSSIBLE. FLASH
FLOODING WILL BE A THREAT AS WELL ACROSS SOUTHEAST SOUTH DAKOTA
AND NORTHWEST IOWA WHERE HEAVY RAIN HAS RECENTLY FALLEN.

WIDESPREAD THUNDERSTORMS ARE LIKELY WEDNESDAY AFTERNOON INTO
THE OVERNIGHT. THIS ROUND OF STORMS HAS A BETTER CHANCE OF
PRODUCING SEVERE WEATHER AND FLOODING.

MORE THUNDERSTORMS....A FEW OF WHICH MAY BE SEVERE...ARE LIKELY
THURSDAY AND THURSDAY NIGHT...CONTINUING THE FLOOD THREAT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT.

&&

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

In the hours before

Local storm report, May 27, 8:46 AM CDT, 1 hour 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
846 AM CDT MON MAY 27 2013

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

0844 AM     HEAVY RAIN       3 NNE STORM LAKE        42.69N 95.18W
05/27/2013  M4.36 INCH       BUENA VISTA        IA   NWS EMPLOYEE

&&

KHANKO

Local storm report, May 27, 8:49 AM CDT, 1 hour 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
849 AM CDT MON MAY 27 2013

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

0849 AM     HEAVY RAIN       3 SSW SIOUX FALLS       43.51N 96.75W
05/27/2013  M1.69 INCH       MINNEHAHA          SD   BROADCAST MEDIA

&&

KHANKO

Local storm report, May 27, 9:07 AM CDT, 1 hour 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
907 AM CDT MON MAY 27 2013

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

0849 AM     HEAVY RAIN       3 NE CHEROKEE           42.78N 95.51W
05/27/2013  M2.48 INCH       CHEROKEE           IA   PUBLIC

            SINCE MIDNIGHT

&&

KHANKO

Local storm report, May 27, 9:40 AM CDT, 39 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
940 AM CDT MON MAY 27 2013

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

0938 AM     FLASH FLOOD      STORM LAKE              42.65N 95.20W
05/27/2013                   BUENA VISTA        IA   EMERGENCY MNGR

            SINGIFICANT FLOODING

0938 AM     FLASH FLOOD      ALTON                   42.99N 96.01W
05/27/2013                   SIOUX              IA   EMERGENCY MNGR

            WATER IN BASEMENTS...FLOODED ROADS BETWEEN ALTON ASN
            HOSPERS, WATER OVER HIGHWAY 60...TRAFFIC DOWN TO ONE LANE
            IN SPOTS.

&&

BT

Local storm report, May 27, 9:45 AM CDT, 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
945 AM CDT MON MAY 27 2013

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

0942 AM     HEAVY RAIN       AURELIA                 42.71N 95.44W
05/27/2013  E9.00 INCH       CHEROKEE           IA   NWS EMPLOYEE

&&

KHANKO

Local storm report, May 27, 10:02 AM CDT, 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1002 AM CDT MON MAY 27 2013

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

1001 AM     HEAVY RAIN       1 SE TEA                43.44N 96.82W
05/27/2013  M2.43 INCH       LINCOLN            SD   PUBLIC

&&

KHANKO

The office that day

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

Issued	Product	Office	Counties	Lasted
May 26, 10:18 PM CDT	Flash Flood Warning	FSD	Buena Vista, Cherokee, Clay, O'Brien	6 hr
May 27, 12:42 AM CDT	Flash Flood Warning	FSD	Lyon, Plymouth, Sioux	4 hr
May 27, 2:01 AM CDT	River Flood Warning	FSD	Cherokee	3 days
May 27, 2:33 AM CDT	River Flood Warning	FSD	Plymouth	56 hr
May 27, 3:59 AM CDT	River Flood Warning	FSD	Lyon	8 hr
May 27, 4:36 AM CDT	Areal Flood Warning	FSD	Buena Vista, Cherokee, Clay, O'Brien	9 hr
May 27, 4:46 AM CDT	Areal Flood Warning	FSD	Lyon, Sioux	6 hr
May 27, 4:51 AM CDT	Areal Flood Warning	FSD	Lyon, Plymouth, Sioux	6 hr
May 27, 6:57 AM CDT	Flash Flood Watch	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more	22 hr
May 27, 9:13 AM CDT	River Flood Warning	FSD	Plymouth	49 hr
May 27, 9:13 AM CDT	River Flood Warning	FSD	Woodbury	3 days
May 27, 10:34 AM CDT	Flash Flood Warning	FSD	Buena Vista, Cherokee, Clay, O'Brien, Plymouth, Sioux	12 hr
May 27, 10:40 AM CDT	Areal Flood Warning	FSD	Buena Vista, Cherokee, Clay, O'Brien, Plymouth, Sioux	24 hr

Nearby

River Flood Warnings in Iowa, 2013 Every river flood warning in 2013

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.