Alert archive / Minnesota / River Flood Warnings in 2011

River Flood Warning 56, NWS Sioux Falls, SD

April 10, 2011Lyon County, Minnesota

NWS Sioux Falls, SD issued this river flood warning at Apr 10, 2011, 3:12 AM CDT for Lyon County, Minnesota. It was in force for 55 hr.

The area

The counties it named.

The facts

Issued
Apr 10, 2011, 3:12 AM CDT (08:12 UTC)
Expired
Apr 12, 2011, 10:17 AM CDT
In force
55 hr
Issued by
NWS Sioux Falls, SD
Flood severity
Minor

County Lyon County, MN

The radar

The Sioux Falls radar (KFSD), 116 km from the middle of the area, began a volume at 08:12 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 Redwood River at Russell (RUSM5).

Action stage
12 ft
Minor stage
14 ft
Moderate stage
17 ft
Major stage
20 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05314973, 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.

815 
WGUS43 KFSD 100812
FLWFSD
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
312 AM CDT SUN APR 10 2011

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

  REDWOOD RIVER AT RUSSELL 
   
.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. 

&&

MNC083-111212-
/O.NEW.KFSD.FL.W.0056.110410T0812Z-000000T0000Z/
/RUSM5.1.ER.110410T0417Z.110410T0730Z.000000T0000Z.NO/
312 AM CDT SUN APR 10 2011

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A 

* FLOOD WARNING FOR 
  THE REDWOOD RIVER AT RUSSELL.
* UNTIL FURTHER NOTICE.
* AT 02AM SUNDAY THE STAGE WAS 14.6 FEET.
* FLOOD STAGE IS 14.0 FEET.
* AT STAGES NEAR 14.0 FEET...THE RIGHT BANK OVERFLOWS FLOODING SOME 
  LOW LYING AREAS. 


$$

&& 
LOCATION FLOOD  LATEST OBSERVED  
         STAGE  STAGE  TIME      

REDWOOD RIVER
RUSM5    14.0   14.62 SUN 2 AM
3 follow-up statements
877 
WGUS83 KFSD 101618
FLSFSD
FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1118 AM CDT SUN APR 10 2011

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

  JAMES RIVER AT HURON
  JAMES RIVER NEAR FORESTBURG
  JAMES RIVER AT MITCHELL
  JAMES RIVER NEAR SCOTLAND
  JAMES RIVER ABOVE YANKTON
  BIG SIOUX RIVER NEAR BRUCE
  BIG SIOUX RIVER NEAR BROOKINGS
  BIG SIOUX RIVER NEAR DELL RAPIDS
  BIG SIOUX RIVER AT SIOUX FALLS 60TH STREET
  BIG SIOUX RIVER AT SIOUX FALLS NORTH CLIFF
  BIG SIOUX RIVER AT HAWARDEN
  BIG SIOUX RIVER AT AKRON
  DES MOINES RIVER NEAR WINDOM
  DES MOINES RIVER AT JACKSON 
  REDWOOD RIVER AT RUSSELL
  REDWOOD RIVER NEAR MARSHALL
   
.THE FOLLOWING RIVER FORECASTS INCLUDE FORECAST PRECIPITATION THROUGH
TONIGHT. ANY ADDITIONAL FUTURE RAINS COULD AFFECT THE CREST 
FORECASTS. 
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

SAFETY MESSAGE...DO NOT DRIVE CARS THROUGH FLOODED AREAS.  THE WATER 
DEPTH AND ROAD CONDITION MAY BE UNSAFE.

ADDITIONAL INFORMATION IS AVAILABLE AT 
 
HTTP://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. 

&&

SDC005-120418-
/O.CON.KFSD.FL.W.0015.000000T0000Z-000000T0000Z/
/HURS2.3.SM.110320T1215Z.110326T0915Z.000000T0000Z.NO/
1118 AM CDT SUN APR 10 2011

THE FLOOD WARNING CONTINUES FOR
  THE JAMES RIVER AT HURON.
* UNTIL FURTHER NOTICE.
* AT 09AM SUNDAY THE STAGE WAS 17.0 FEET.
* FLOOD STAGE IS 11.0 FEET.
* FORECAST...THE RIVER WILL SLOWLY FALL FOR THE NEXT SEVERAL WEEKS.
* AT STAGES NEAR 16.5 FEET...JERSEY...RIVERSIDE...AND SHERMAN WILL 
  BEGIN FLOODING. 

$$

SDC111-120417-
/O.CON.KFSD.FL.W.0016.000000T0000Z-000000T0000Z/
/FORS2.3.SM.110319T1444Z.110325T2015Z.000000T0000Z.NR/
1118 AM CDT SUN APR 10 2011

THE FLOOD WARNING CONTINUES FOR
  THE JAMES RIVER NEAR FORESTBURG.
* UNTIL FURTHER NOTICE.
* AT 09AM SUNDAY THE STAGE WAS 16.0 FEET.
* FLOOD STAGE IS 12.0 FEET.
* FORECAST...THE RIVER WILL SLOWLY FALL FOR THE NEXT SEVERAL WEEKS. 
* AT STAGES NEAR 16.0 FEET...MOST OF THE FLOOD PLAIN IS UNDER 
  WATER...AND THE WATER REACHES THE BOTTOM OF THE BRIDGE ON HIGHWAY 34.

$$

SDC035-061-120417-
/O.CON.KFSD.FL.W.0017.000000T0000Z-000000T0000Z/
/JRMS2.3.SM.110317T0025Z.110328T0415Z.000000T0000Z.NR/
1118 AM CDT SUN APR 10 2011

THE FLOOD WARNING CONTINUES FOR
  THE JAMES RIVER AT MITCHELL.
* UNTIL FURTHER NOTICE.
* AT 09AM SUNDAY THE STAGE WAS 22.0 FEET.
* FLOOD STAGE IS 17.0 FEET.
* FORECAST...THE RIVER WILL SLOWLY FALL FOR THE NEXT SEVERAL WEEKS.
* AT STAGES NEAR 22.0 FEET...WATER OVERTOPS 257TH STREET ABOUT 100 
  YARDS EAST OF THE BRIDGE. 

$$

SDC067-135-120417-
/O.CON.KFSD.FL.W.0018.000000T0000Z-000000T0000Z/
/SCOS2.3.SM.000000T0000Z.110328T0815Z.000000T0000Z.NR/
1118 AM CDT SUN APR 10 2011

THE FLOOD WARNING CONTINUES FOR
  THE JAMES RIVER NEAR SCOTLAND.
* UNTIL FURTHER NOTICE.
* AT 09AM SUNDAY THE STAGE WAS 17.4 FEET.
* FLOOD STAGE IS 13.0 FEET.
* FORECAST...THE RIVER WILL VERY SLOWLY FALL FOR THE NEXT SEVERAL
  WEEKS. 
* AT STAGES NEAR 18.0 FEET...HIGHWAY 44 SOUTH OF MILLTOWN AND KEIBER 
  ROAD IN MILLTOWN WILL BE FLOODED. 

$$

SDC135-120417-
/O.CON.KFSD.FL.W.0019.000000T0000Z-000000T0000Z/
/YNNS2.3.SM.110321T1445Z.110329T0331Z.000000T0000Z.NO/
1118 AM CDT SUN APR 10 2011

THE FLOOD WARNING CONTINUES FOR
  THE JAMES RIVER ABOVE YANKTON.
* UNTIL FURTHER NOTICE.
* AT 09AM SUNDAY THE STAGE WAS 18.5 FEET.
* FLOOD STAGE IS 12.0 FEET.
* FORECAST...THE RIVER WILL SLOWLY FALL FOR THE NEXT SEVERAL WEEKS. 
* AT STAGES NEAR 17.0 FEET...SW JIM RIVER ROAD NORTH OF 303RD STREET 
  BEGINS FLOODING. 

$$

SDC011-120417-
/O.CON.KFSD.FL.W.0044.000000T0000Z-000000T0000Z/
/BRCS2.3.ER.110320T0515Z.110328T1430Z.000000T0000Z.NR/
1118 AM CDT SUN APR 10 2011

THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER NEAR BRUCE.
* UNTIL FURTHER NOTICE.
* AT 09AM SUNDAY THE STAGE WAS ESTIMATED AT 10.4 FEET.
* FLOOD STAGE IS 8.0 FEET.
* AT STAGES NEAR 10.5 FEET...198TH STREET AND 199TH STREET BETWEEN 
  466TH AND 467TH AVENUES ARE FLOODED...AS IS 202ND STREET BETWEEN 
  465TH AND 467TH AVENUES...AND 465TH AVENUE BETWEEN 203RD AND 204TH 
  STREETS. 

$$

SDC011-101-120417-
/O.CON.KFSD.FL.W.0020.000000T0000Z-000000T0000Z/
/BRKS2.3.SM.110319T1930Z.110325T0146Z.000000T0000Z.NO/
1118 AM CDT SUN APR 10 2011

THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER NEAR BROOKINGS.
* UNTIL FURTHER NOTICE.
* AT 09AM SUNDAY THE STAGE WAS 11.7 FEET.
* FLOOD STAGE IS 9.0 FEET.
* FORECAST...THE RIVER WILL REMAIN NEARLY STEADY THROUGH THURSDAY 
  APRIL 14...THEN BEGIN SLOWLY FALLING.
* AT STAGES NEAR 11.7 FEET...473RD AVENUE SOUTH OF THE GAGE BEGINS TO
  FLOOD. 

$$

SDC099-101-120417-
/O.CON.KFSD.FL.W.0021.000000T0000Z-000000T0000Z/
/DERS2.3.SM.110317T2100Z.110324T1530Z.000000T0000Z.NR/
1118 AM CDT SUN APR 10 2011

THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER NEAR DELL RAPIDS.
* UNTIL FURTHER NOTICE.
* AT 09AM SUNDAY THE STAGE WAS 13.7 FEET.
* FLOOD STAGE IS 12.0 FEET.
* FORECAST...THE RIVER WILL VERY SLOWLY FALL FOR THE NEXT SEVERAL 
  WEEKS. 
* AT STAGES NEAR 14.0 FEET...SIGNIFICANT AMOUNTS OF AGRICULTURAL 
  LANDS ARE FLOODED THROUGH THE BASIN. 

$$

SDC099-120417-
/O.CON.KFSD.FL.W.0022.000000T0000Z-000000T0000Z/
/SFLS2.2.SM.110317T2230Z.110326T0745Z.000000T0000Z.NO/
1118 AM CDT SUN APR 10 2011

THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER AT SIOUX FALLS 60TH STREET.
* UNTIL FURTHER NOTICE.
* AT 09AM SUNDAY THE STAGE WAS 13.3 FEET.
* FLOOD STAGE IS 12.0 FEET.
* FORECAST...THE RIVER WILL SLOWLY FALL FOR THE NEXT TWO WEEKS.
* AT STAGES NEAR 14.0 FEET...SOME FARM BUILDINGS BETWEEN RENNER AND 
  SIOUX FALLS ARE THREATENED BY HIGH WATER. 

$$

IAC119-SDC083-099-120417-
/O.EXT.KFSD.FL.W.0023.000000T0000Z-000000T0000Z/
/SXFS2.2.SM.110320T0932Z.110326T0315Z.000000T0000Z.NO/
1118 AM CDT SUN APR 10 2011

THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER AT SIOUX FALLS NORTH CLIFF.
* UNTIL FURTHER NOTICE.
* AT 09AM SUNDAY THE STAGE WAS 17.5 FEET.
* FLOOD STAGE IS 16.0 FEET.
* FORECAST...THE RIVER WILL VERY SLOWLY FALL FOR THE TWO WEEKS.
* AT STAGES NEAR 17.5 FEET...60TH STREET NORTH AND TIMBERLINE ROAD 
  BEGIN TO FLOOD. 

$$

IAC167-SDC083-127-120417-
/O.CON.KFSD.FL.W.0024.000000T0000Z-000000T0000Z/
/HAWI4.2.SM.110317T2239Z.110326T1430Z.000000T0000Z.NO/
1118 AM CDT SUN APR 10 2011

THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER AT HAWARDEN.
* UNTIL FURTHER NOTICE.
* FLOOD STAGE IS 15.0 FEET.
* FORECAST...THE RIVER WILL REMAIN NEARLY STATIONARY THROUGH
  MID WEEK. 
* AT STAGES NEAR 15.0 FEET...AGRICULTURAL FLOODING BEGINS ON THE 
  SOUTH DAKOTA SIDE OF THE RIVER. 

$$

IAC149-SDC127-120417-
/O.CON.KFSD.FL.W.0025.000000T0000Z-000000T0000Z/
/AKRI4.3.SM.110318T0400Z.110327T0400Z.000000T0000Z.NO/
1118 AM CDT SUN APR 10 2011

THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER AT AKRON.
* UNTIL FURTHER NOTICE.
* AT 09AM SUNDAY THE STAGE WAS 17.6 FEET.
* FLOOD STAGE IS 16.0 FEET.
* FORECAST...THE RIVER WILL REMAIN NEARLY STATIONARY THROUGH 
  MID WEEK. 
* AT STAGES NEAR 17.0 FEET...ABOUT 6500 ACRES OF FARM LAND ARE 
  FLOODED. 

$$

MNC033-063-120417-
/O.CON.KFSD.FL.W.0049.000000T0000Z-000000T0000Z/
/WDOM5.2.ER.110321T0710Z.110324T1400Z.000000T0000Z.NO/
1118 AM CDT SUN APR 10 2011

THE FLOOD WARNING CONTINUES FOR
  THE DES MOINES RIVER NEAR WINDOM.
* UNTIL FURTHER NOTICE.
* AT 09AM SUNDAY THE STAGE WAS 19.1 FEET.
* FLOOD STAGE IS 19.0 FEET.
* AT STAGES NEAR 19.0 FEET...MINOR LOWLAND FLOODING BEGINS ALONG THE 
  LOWER EAST BANK. 

$$

MNC063-120417-
/O.EXT.KFSD.FL.W.0026.000000T0000Z-110416T1800Z/
/JCKM5.2.SM.110320T1408Z.110326T1400Z.110415T1800Z.NO/
1118 AM CDT SUN APR 10 2011

...FLOOD WARNING EXTENDED UNTIL 1 PM SATURDAY... 
THE FLOOD WARNING CONTINUES FOR
  THE DES MOINES RIVER AT JACKSON.
* UNTIL SATURDAY AFTERNOON.
* AT 09AM SUNDAY THE STAGE WAS 13.1 FEET.
* FLOOD STAGE IS 12.0 FEET.
* FORECAST...THE RIVER WILL CONTINUE TO FALL TO BELOW FLOOD STAGE BY 
  FRIDAY APRIL 15.
* AT STAGES NEAR 12.0 FEET...LOWLAND FLOODING IN RURAL AREAS BEGINS 
  ON NON-LEVEED PORTIONS OF THE RIVER. 

$$

MNC083-120417-
/O.CON.KFSD.FL.W.0056.000000T0000Z-000000T0000Z/
/RUSM5.1.ER.110410T0417Z.110410T1200Z.000000T0000Z.NO/
1118 AM CDT SUN APR 10 2011

THE FLOOD WARNING CONTINUES FOR
  THE REDWOOD RIVER AT RUSSELL.
* UNTIL FURTHER NOTICE.
* AT 09AM SUNDAY THE STAGE WAS 14.9 FEET.
* FLOOD STAGE IS 14.0 FEET.
* AT STAGES NEAR 14.0 FEET...THE RIGHT BANK OVERFLOWS FLOODING SOME 
  LOW LYING AREAS. 

$$

MNC083-120417-
/O.CON.KFSD.FL.W.0057.110410T1610Z-110412T1200Z/
/MMLM5.1.ER.110410T1610Z.110411T0000Z.110411T1200Z.NO/
1118 AM CDT SUN APR 10 2011

THE FLOOD WARNING CONTINUES FOR
  THE REDWOOD RIVER NEAR MARSHALL.
* UNTIL TUESDAY MORNING.
* AT 09AM SUNDAY THE STAGE WAS 13.9 FEET.
* FLOOD STAGE IS 14.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 11 AM SUNDAY AND CREST NEAR 
  14.2 FEET BY SUNDAY APRIL 10. THE RIVER WILL FALL BELOW FLOOD STAGE
  BY MONDAY APRIL 11.
* AT STAGES NEAR 14.0 FEET...THERE WILL BE MINOR FLOODING OF LOW 
  LYING AREAS OUTSIDE OF MARSHALL. 

$$

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

JAMES RIVER
HURS2    11.0   16.99 SUN  9 AM                    18.6  THU MAR 31
FORS2    12.0   15.96 SUN  9 AM                    18.2  THU MAR 31
JRMS2    17.0   21.97 SUN 10 AM                    23.9  THU MAR 31
SCOS2    13.0   17.35 SUN  9 AM                    19.0  THU MAR 31
YNNS2    12.0   18.54 SUN 10 AM                    21.5  THU MAR 31

BIG SIOUX RIVER
BRCS2     8.0  E10.40 SUN  9 AM                    10.5  TUE APR 05
BRKS2     9.0   11.73 SUN 10 AM                    12.0  WED APR 06
DERS2    12.0   13.68 SUN  9 AM                    13.8  FRI APR 08
SFLS2    12.0   13.31 SUN  9 AM                    13.6  THU MAR 31
SXFS2    16.0   17.53 SUN  9 AM                    18.4  THU MAR 31
HAWI4    15.0      M                               18.1  THU MAR 31
AKRI4    16.0   17.64 SUN  9 AM                    19.4  THU MAR 31

WEST FORK DES MOINES RIVER
WDOM5    19.0   19.15 SUN  9 AM                     20.6  THU MAR 31
JCKM5    12.0   13.09 SUN  9 AM                     15.1  WED MAR 30

REDWOOD RIVER
RUSM5    14.0   14.87 SUN 9 AM                      15.1  SUN APR 10
MMLM5    14.0   13.88 SUN 9 AM    14.2  SUN 7 PM
175 
WGUS83 KFSD 111407
FLSFSD
FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
907 AM CDT MON APR 11 2011

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

  DES MOINES RIVER NEAR WINDOM 
  REDWOOD RIVER NEAR MARSHALL 

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

  BIG SIOUX RIVER NEAR BRUCE
  BIG SIOUX RIVER NEAR BROOKINGS
  BIG SIOUX RIVER NEAR DELL RAPIDS
  BIG SIOUX RIVER AT SIOUX FALLS 60TH STREET
  BIG SIOUX RIVER AT SIOUX FALLS NORTH CLIFF
  BIG SIOUX RIVER AT HAWARDEN
  BIG SIOUX RIVER AT AKRON
  DES MOINES RIVER AT JACKSON
  REDWOOD RIVER AT RUSSELL
   
.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. 

&&

SDC011-130207-
/O.CON.KFSD.FL.W.0044.000000T0000Z-000000T0000Z/
/BRCS2.3.ER.110320T0515Z.110328T1430Z.000000T0000Z.NR/
907 AM CDT MON APR 11 2011

THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER NEAR BRUCE.
* UNTIL FURTHER NOTICE.
* AT 08AM MONDAY THE STAGE WAS 10.4 FEET.
* FLOOD STAGE IS 8.0 FEET.
* AT STAGES NEAR 10.5 FEET...198TH STREET AND 199TH STREET BETWEEN 
  466TH AND 467TH AVENUES ARE FLOODED...AS IS 202ND STREET BETWEEN 
  465TH AND 467TH AVENUES...AND 465TH AVENUE BETWEEN 203RD AND 204TH 
  STREETS. 

$$

SDC011-101-130206-
/O.CON.KFSD.FL.W.0020.000000T0000Z-000000T0000Z/
/BRKS2.3.SM.110319T1930Z.110325T0146Z.000000T0000Z.NO/
907 AM CDT MON APR 11 2011

THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER NEAR BROOKINGS.
* UNTIL FURTHER NOTICE.
* AT 08AM MONDAY THE STAGE WAS 11.7 FEET.
* FLOOD STAGE IS 9.0 FEET.
* FORECAST...THE RIVER WILL CONTINUE TO SLOWLY FALL FOR THE NEXT
  SEVERAL DAYS.
* AT STAGES NEAR 11.7 FEET...473RD AVENUE SOUTH OF THE GAGE BEGINS TO
  FLOOD. 

$$

SDC099-101-130206-
/O.CON.KFSD.FL.W.0021.000000T0000Z-000000T0000Z/
/DERS2.3.SM.110317T2100Z.110324T1530Z.000000T0000Z.NR/
907 AM CDT MON APR 11 2011

THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER NEAR DELL RAPIDS.
* UNTIL FURTHER NOTICE.
* AT 08AM MONDAY THE STAGE WAS 13.9 FEET.
* FLOOD STAGE IS 12.0 FEET.
* FORECAST...THE RIVER WILL CREST NEAR 13.9 FEET BY MONDAY APRIL 11 
  THEN BEGIN FALLING.
* AT STAGES NEAR 14.0 FEET...SIGNIFICANT AMOUNTS OF AGRICULTURAL 
  LANDS ARE FLOODED THROUGH THE BASIN. 

$$

SDC099-130206-
/O.CON.KFSD.FL.W.0022.000000T0000Z-000000T0000Z/
/SFLS2.2.SM.110317T2230Z.110326T0745Z.000000T0000Z.NO/
907 AM CDT MON APR 11 2011

THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER AT SIOUX FALLS 60TH STREET.
* UNTIL FURTHER NOTICE.
* AT 08AM MONDAY THE STAGE WAS 13.3 FEET.
* FLOOD STAGE IS 12.0 FEET.
* FORECAST...THE RIVER WILL CREST NEAR 13.4 FEET BY MONDAY APRIL 11 
  THEN BEGIN FALLING.
* AT STAGES NEAR 14.0 FEET...SOME FARM BUILDINGS BETWEEN RENNER AND 
  SIOUX FALLS ARE THREATENED BY HIGH WATER. 

$$

IAC119-SDC083-099-130206-
/O.CON.KFSD.FL.W.0023.000000T0000Z-000000T0000Z/
/SXFS2.2.SM.110320T0932Z.110326T0315Z.000000T0000Z.NO/
907 AM CDT MON APR 11 2011

THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER AT SIOUX FALLS NORTH CLIFF.
* UNTIL FURTHER NOTICE.
* AT 12AM MONDAY THE STAGE WAS 17.4 FEET.
* FLOOD STAGE IS 16.0 FEET.
* FORECAST...THE RIVER WILL CREST NEAR 17.6 FEET BY MONDAY APRIL 11 
  THEN BEGIN FALLING.
* AT STAGES NEAR 17.5 FEET...60TH STREET NORTH AND TIMBERLINE ROAD 
  BEGIN TO FLOOD. 

$$

IAC167-SDC083-127-130206-
/O.CON.KFSD.FL.W.0024.000000T0000Z-000000T0000Z/
/HAWI4.2.SM.110317T2239Z.110326T1430Z.000000T0000Z.NO/
907 AM CDT MON APR 11 2011

THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER AT HAWARDEN.
* UNTIL FURTHER NOTICE.
* AT 07AM MONDAY THE STAGE WAS ESTIMATED AT 16.4 FEET.
* FLOOD STAGE IS 15.0 FEET.
* FORECAST...THE RIVER WILL CREST NEAR 16.6 FEET BY 7 AM
  THURSDAY THEN BEGIN FALLING.

$$

IAC149-SDC127-130206-
/O.CON.KFSD.FL.W.0025.000000T0000Z-000000T0000Z/
/AKRI4.3.SM.110318T0400Z.110327T0400Z.000000T0000Z.NO/
907 AM CDT MON APR 11 2011

THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER AT AKRON.
* UNTIL FURTHER NOTICE.
* AT 08AM MONDAY THE STAGE WAS 17.7 FEET.
* FLOOD STAGE IS 16.0 FEET.
* FORECAST...THE RIVER WILL REMAIN NEAR 17.8 FEET FOR THE NEXT
  FEW DAYS THEN BEGIN FALLING.
* AT STAGES NEAR 17.0 FEET...ABOUT 6500 ACRES OF FARM LAND ARE 
  FLOODED. 

$$

MNC033-063-111437-
/O.CAN.KFSD.FL.W.0049.000000T0000Z-110411T1407Z/
/WDOM5.2.ER.110321T0710Z.110324T1400Z.110411T1130Z.NO/
907 AM CDT MON APR 11 2011

THE FLOOD WARNING IS CANCELLED FOR
  THE DES MOINES RIVER NEAR WINDOM.
* AT 08AM MONDAY THE STAGE WAS 18.97 FEET.
* FLOOD STAGE IS 19.0 FEET.
* RECENT ACTIVITY...THE RIVER FELL BELOW FLOOD STAGE ON MONDAY APRIL 
  11.
* AT STAGES NEAR 19.0 FEET...MINOR LOWLAND FLOODING BEGINS ALONG THE 
  LOWER EAST BANK. 

$$

MNC063-130206-
/O.CON.KFSD.FL.W.0026.000000T0000Z-110416T1800Z/
/JCKM5.2.SM.110320T1408Z.110326T1400Z.110415T1800Z.NO/
907 AM CDT MON APR 11 2011

THE FLOOD WARNING CONTINUES FOR
  THE DES MOINES RIVER AT JACKSON.
* UNTIL SATURDAY AFTERNOON.
* AT 08AM MONDAY THE STAGE WAS 12.7 FEET.
* FLOOD STAGE IS 12.0 FEET.
* FORECAST...THE RIVER WILL FALL BELOW FLOOD STAGE BY SATURDAY
  APRIL 16.
* AT STAGES NEAR 12.0 FEET...LOWLAND FLOODING IN RURAL AREAS BEGINS 
  ON NON-LEVEED PORTIONS OF THE RIVER. 

$$

MNC083-130206-
/O.CON.KFSD.FL.W.0056.000000T0000Z-000000T0000Z/
/RUSM5.1.ER.110410T0417Z.110410T1200Z.000000T0000Z.NO/
907 AM CDT MON APR 11 2011

THE FLOOD WARNING CONTINUES FOR
  THE REDWOOD RIVER AT RUSSELL.
* UNTIL FURTHER NOTICE.
* AT 08AM MONDAY THE STAGE WAS 14.4 FEET.
* FLOOD STAGE IS 14.0 FEET.
* AT STAGES NEAR 14.0 FEET...THE RIGHT BANK OVERFLOWS FLOODING SOME 
  LOW LYING AREAS. 

$$

MNC083-111437-
/O.CAN.KFSD.FL.W.0057.000000T0000Z-110412T1200Z/
/MMLM5.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
907 AM CDT MON APR 11 2011

THE FLOOD WARNING IS CANCELLED FOR
  THE REDWOOD RIVER NEAR MARSHALL.
* AT 08AM MONDAY THE STAGE WAS 13.3 FEET.
* FLOOD STAGE IS 14.0 FEET.
* FORECAST...THE RIVER CRESTED BELOW FLOOD STAGE AT 13.9 FEET.  THE 
  RIVER WILL FALL TO 13.0 FEET BY 7 AM TUESDAY.
* AT STAGES NEAR 14.0 FEET...THERE WILL BE MINOR FLOODING OF LOW 
  LYING AREAS OUTSIDE OF MARSHALL. 

$$

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

BIG SIOUX RIVER
BRCS2     8.0   10.41 MON 9 AM                      10.5  TUE APR 05
BRKS2     9.0   11.70 MON 9 AM                      12.0  WED APR 06
DERS2    12.0   13.87 MON 8 AM    13.9  MON 1 PM
SFLS2    12.0   13.26 MON 8 AM    13.4  MON 1 PM
SXFS2    16.0   17.44 MON 12 AM   17.6  MON 1 PM 
HAWI4    15.0  E16.40 MON 7 AM    16.6  THU 7 AM 
AKRI4    16.0   17.70 MON 8 AM    17.8  TUE 1 AM 

WEST FORK DES MOINES RIVER
WDOM5    19.0   18.97 MON 8 AM                      20.4  FRI APR 01
JCKM5    12.0   12.67 MON 8 AM                      14.6  FRI APR 01

REDWOOD RIVER
RUSM5    14.0   14.43 MON 8 AM                      15.1  SUN APR 10
MMLM5    14.0   13.32 MON 8 AM                      13.9  SUN APR 10

MG
060 
WGUS83 KFSD 121517
FLSFSD
FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1017 AM CDT TUE APR 12 2011

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

  REDWOOD RIVER AT RUSSELL 

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

  JAMES RIVER AT HURON
  JAMES RIVER NEAR FORESTBURG
  JAMES RIVER AT MITCHELL
  JAMES RIVER NEAR SCOTLAND
  JAMES RIVER ABOVE YANKTON
  BIG SIOUX RIVER NEAR BRUCE
  BIG SIOUX RIVER NEAR BROOKINGS
  BIG SIOUX RIVER NEAR DELL RAPIDS
  BIG SIOUX RIVER AT SIOUX FALLS 60TH STREET
  BIG SIOUX RIVER AT SIOUX FALLS NORTH CLIFF
  BIG SIOUX RIVER AT HAWARDEN
  BIG SIOUX RIVER AT AKRON
  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://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. 

&&

SDC005-140317-
/O.CON.KFSD.FL.W.0015.000000T0000Z-000000T0000Z/
/HURS2.3.SM.110320T1215Z.110326T0915Z.000000T0000Z.NO/
1017 AM CDT TUE APR 12 2011

THE FLOOD WARNING CONTINUES FOR
  THE JAMES RIVER AT HURON.
* UNTIL FURTHER NOTICE.
* AT 09AM TUESDAY THE STAGE WAS 16.7 FEET.
* FLOOD STAGE IS 11.0 FEET.
* FORECAST...THE RIVER WILL CONTINUE TO SLOWLY FALL FOR THE NEXT 
  SEVERAL WEEKS.
* AT STAGES NEAR 16.5 FEET...JERSEY...RIVERSIDE...AND SHERMAN WILL 
  BEGIN FLOODING. 

$$

SDC111-140316-
/O.CON.KFSD.FL.W.0016.000000T0000Z-000000T0000Z/
/FORS2.3.SM.110319T1444Z.110325T2015Z.000000T0000Z.NR/
1017 AM CDT TUE APR 12 2011

THE FLOOD WARNING CONTINUES FOR
  THE JAMES RIVER NEAR FORESTBURG.
* UNTIL FURTHER NOTICE.
* AT 09AM TUESDAY THE STAGE WAS 15.8 FEET.
* FLOOD STAGE IS 12.0 FEET.
* FORECAST...THE RIVER WILL CONTINUE TO SLOWLY FALL FOR THE NEXT 
  SEVERAL WEEKS.
* AT STAGES NEAR 16.0 FEET...MOST OF THE FLOOD PLAIN IS UNDER 
  WATER...AND THE WATER REACHES THE BOTTOM OF THE BRIDGE ON
  HIGHWAY 34.

$$

SDC035-061-140316-
/O.CON.KFSD.FL.W.0017.000000T0000Z-000000T0000Z/
/JRMS2.3.SM.110317T0025Z.110328T0415Z.000000T0000Z.NR/
1017 AM CDT TUE APR 12 2011

THE FLOOD WARNING CONTINUES FOR
  THE JAMES RIVER AT MITCHELL.
* UNTIL FURTHER NOTICE.
* AT 09AM TUESDAY THE STAGE WAS 21.9 FEET.
* FLOOD STAGE IS 17.0 FEET.
* FORECAST...THE RIVER WILL CONTINUE TO SLOWLY FALL FOR THE NEXT 
  SEVERAL WEEKS.
* AT STAGES NEAR 22.0 FEET...WATER OVERTOPS 257TH STREET ABOUT 100 
  YARDS EAST OF THE BRIDGE. 

$$

SDC067-135-140316-
/O.CON.KFSD.FL.W.0018.000000T0000Z-000000T0000Z/
/SCOS2.3.SM.000000T0000Z.110328T0815Z.000000T0000Z.NR/
1017 AM CDT TUE APR 12 2011

THE FLOOD WARNING CONTINUES FOR
  THE JAMES RIVER NEAR SCOTLAND.
* UNTIL FURTHER NOTICE.
* AT 09AM TUESDAY THE STAGE WAS 17.1 FEET.
* FLOOD STAGE IS 13.0 FEET.
* FORECAST...THE RIVER WILL CONTINUE TO SLOWLY FALL FOR THE NEXT 
  SEVERAL WEEKS.
* AT STAGES NEAR 18.0 FEET...HIGHWAY 44 SOUTH OF MILLTOWN AND KEIBER 
  ROAD IN MILLTOWN WILL BE FLOODED. 

$$

SDC135-140316-
/O.CON.KFSD.FL.W.0019.000000T0000Z-000000T0000Z/
/YNNS2.3.SM.110321T1445Z.110329T0331Z.000000T0000Z.NO/
1017 AM CDT TUE APR 12 2011

THE FLOOD WARNING CONTINUES FOR
  THE JAMES RIVER ABOVE YANKTON.
* UNTIL FURTHER NOTICE.
* AT 10AM TUESDAY THE STAGE WAS 18.1 FEET.
* FLOOD STAGE IS 12.0 FEET.
* FORECAST...THE RIVER WILL CONTINUE TO SLOWLY FALL FOR THE NEXT 
  SEVERAL WEEKS.
* AT STAGES NEAR 17.0 FEET...SW JIM RIVER ROAD NORTH OF 303RD STREET 
  BEGINS FLOODING. 

$$

SDC011-140316-
/O.CON.KFSD.FL.W.0044.000000T0000Z-000000T0000Z/
/BRCS2.3.ER.110320T0515Z.110328T1430Z.000000T0000Z.NR/
1017 AM CDT TUE APR 12 2011

THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER NEAR BRUCE.
* UNTIL FURTHER NOTICE.
* AT 09AM TUESDAY THE STAGE WAS 10.4 FEET.
* FLOOD STAGE IS 8.0 FEET.
* AT STAGES NEAR 10.5 FEET...198TH STREET AND 199TH STREET BETWEEN 
  466TH AND 467TH AVENUES ARE FLOODED...AS IS 202ND STREET BETWEEN 
  465TH AND 467TH AVENUES...AND 465TH AVENUE BETWEEN 203RD AND 204TH 
  STREETS. 

$$

SDC011-101-140316-
/O.CON.KFSD.FL.W.0020.000000T0000Z-000000T0000Z/
/BRKS2.3.SM.110319T1930Z.110325T0146Z.000000T0000Z.NO/
1017 AM CDT TUE APR 12 2011

THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER NEAR BROOKINGS.
* UNTIL FURTHER NOTICE.
* AT 09AM TUESDAY THE STAGE WAS 11.7 FEET.
* FLOOD STAGE IS 9.0 FEET.
* FORECAST...THE RIVER WILL REMAIN NEAR 11.6 FEET FOR THE NEXT COUPLE
  DAYS.
* AT STAGES NEAR 11.7 FEET...473RD AVENUE SOUTH OF THE GAGE BEGINS TO
  FLOOD. 

$$

SDC099-101-140316-
/O.CON.KFSD.FL.W.0021.000000T0000Z-000000T0000Z/
/DERS2.3.SM.110317T2100Z.110324T1530Z.000000T0000Z.NR/
1017 AM CDT TUE APR 12 2011

THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER NEAR DELL RAPIDS.
* UNTIL FURTHER NOTICE.
* AT 09AM TUESDAY THE STAGE WAS 14.0 FEET.
* FLOOD STAGE IS 12.0 FEET.
* FORECAST...THE RIVER WILL CREST NEAR 14.1 FEET BY TUESDAY APRIL 12 
  THEN BEGIN FALLING.
* AT STAGES NEAR 14.0 FEET...SIGNIFICANT AMOUNTS OF AGRICULTURAL 
  LANDS ARE FLOODED THROUGH THE BASIN. 

$$

SDC099-140316-
/O.CON.KFSD.FL.W.0022.000000T0000Z-000000T0000Z/
/SFLS2.2.SM.110317T2230Z.110326T0745Z.000000T0000Z.NO/
1017 AM CDT TUE APR 12 2011

THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER AT SIOUX FALLS 60TH STREET.
* UNTIL FURTHER NOTICE.
* AT 09AM TUESDAY THE STAGE WAS 13.4 FEET.
* FLOOD STAGE IS 12.0 FEET.
* FORECAST...THE RIVER WILL CONTINUE TO FALL TO A STAGE OF 13.1 FEET 
  BY 7 AM WEDNESDAY.
* AT STAGES NEAR 14.0 FEET...SOME FARM BUILDINGS BETWEEN RENNER AND 
  SIOUX FALLS ARE THREATENED BY HIGH WATER. 

$$

IAC119-SDC083-099-140316-
/O.CON.KFSD.FL.W.0023.000000T0000Z-000000T0000Z/
/SXFS2.2.SM.110320T0932Z.110326T0315Z.000000T0000Z.NO/
1017 AM CDT TUE APR 12 2011

THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER AT SIOUX FALLS NORTH CLIFF.
* UNTIL FURTHER NOTICE.
* AT 09AM TUESDAY THE STAGE WAS 17.7 FEET.
* FLOOD STAGE IS 16.0 FEET.
* FORECAST...THE RIVER WILL FALL BELOW FLOOD STAGE BY MONDAY APRIL
  18TH.
* AT STAGES NEAR 17.5 FEET...60TH STREET NORTH AND TIMBERLINE ROAD 
  BEGIN TO FLOOD. 

$$

IAC167-SDC083-127-140316-
/O.CON.KFSD.FL.W.0024.000000T0000Z-000000T0000Z/
/HAWI4.2.SM.110317T2239Z.110326T1430Z.000000T0000Z.NO/
1017 AM CDT TUE APR 12 2011

THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER AT HAWARDEN.
* UNTIL FURTHER NOTICE.
* AT 07AM TUESDAY THE STAGE WAS ESTIMATED AT 16.4 FEET.
* FLOOD STAGE IS 15.0 FEET.
* FORECAST...THE RIVER WILL CREST NEAR 16.6 FEET BY THURSDAY APRIL 14
  THEN BEGIN FALLING.

$$

IAC149-SDC127-140316-
/O.CON.KFSD.FL.W.0025.000000T0000Z-000000T0000Z/
/AKRI4.3.SM.110318T0400Z.110327T0400Z.000000T0000Z.NO/
1017 AM CDT TUE APR 12 2011

THE FLOOD WARNING CONTINUES FOR
  THE BIG SIOUX RIVER AT AKRON.
* UNTIL FURTHER NOTICE.
* AT 10AM TUESDAY THE STAGE WAS 17.7 FEET.
* FLOOD STAGE IS 16.0 FEET.
* FORECAST...THE RIVER WILL CREST NEAR 17.8 FEET BY THURSDAY APRIL 14
  THEN BEGIN FALLING.
* AT STAGES NEAR 17.0 FEET...ABOUT 6500 ACRES OF FARM LAND ARE 
  FLOODED. 

$$

MNC063-140316-
/O.CON.KFSD.FL.W.0026.000000T0000Z-110416T1800Z/
/JCKM5.2.SM.110320T1408Z.110326T1400Z.110415T1800Z.NO/
1017 AM CDT TUE APR 12 2011

THE FLOOD WARNING CONTINUES FOR
  THE DES MOINES RIVER AT JACKSON.
* UNTIL SATURDAY AFTERNOON.
* AT 09AM TUESDAY THE STAGE WAS 12.6 FEET.
* FLOOD STAGE IS 12.0 FEET.
* FORECAST...THE RIVER WILL CONTINUE TO FALL TO BELOW FLOOD STAGE BY 
  FRIDAY APRIL 15.
* AT STAGES NEAR 12.0 FEET...LOWLAND FLOODING IN RURAL AREAS BEGINS 
  ON NON-LEVEED PORTIONS OF THE RIVER. 

$$

MNC083-121547-
/O.CAN.KFSD.FL.W.0056.000000T0000Z-110412T1517Z/
/RUSM5.1.ER.110410T0417Z.110410T1200Z.110412T0845Z.NO/
1017 AM CDT TUE APR 12 2011

THE FLOOD WARNING IS CANCELLED FOR
  THE REDWOOD RIVER AT RUSSELL.
* AT 09AM TUESDAY THE STAGE WAS 13.9 FEET.
* FLOOD STAGE IS 14.0 FEET.
* RECENT ACTIVITY...THE RIVER FELL BELOW FLOOD STAGE ON TUESDAY APRIL
  12.
* AT STAGES NEAR 14.0 FEET...THE RIGHT BANK OVERFLOWS FLOODING SOME 
  LOW LYING AREAS. 

$$

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

JAMES RIVER
HURS2    11.0   16.70 TUE 9 AM                      18.0  SAT APR 02
FORS2    12.0   15.83 TUE 9 AM                      17.5  SAT APR 02
JRMS2    17.0   21.93 TUE 10 AM                     23.4  SAT APR 02
SCOS2    13.0   17.12 TUE 9 AM                      18.6  SAT APR 02
YNNS2    12.0   18.08 TUE 10 AM                     20.8  SAT APR 02

BIG SIOUX RIVER
BRCS2     8.0   10.39 TUE 10 AM                     10.5  TUE APR 05
BRKS2     9.0   11.66 TUE 10 AM                     12.0  WED APR 06
DERS2    12.0   14.01 TUE 9 AM    14.1  TUE 1 PM 
SFLS2    12.0   13.42 TUE 9 AM                      13.5  SAT APR 09
SXFS2    16.0   17.66 TUE 9 AM                      17.7  TUE APR 12
HAWI4    15.0  E16.40 TUE 7 AM    16.6  THU 7 AM 
AKRI4    16.0   17.71 TUE 10 AM   17.8  WED 1 AM 

WEST FORK DES MOINES RIVER
JCKM5    12.0   12.64 TUE 9 AM                      14.3  SAT APR 02

REDWOOD RIVER
RUSM5    14.0   13.86 TUE 9 AM                      15.1  SUN APR 10

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 Apr 9, 3:40 PM CDT, 11 hours 32 minutes earlier.

Area forecast discussion, Apr 9, 3:40 PM CDT, 11 hours 32 minutes before
AREA FORECAST DISCUSSION FOR SOUTHEAST SD/SOUTHWEST MN/NORTHWEST IA
NATIONAL WEATHER SERVICE SIOUX FALLS SD
340 PM CDT SAT APR 9 2011

.DISCUSSION...
SURFACE WARM FRONT HAS NOW APPROACHED SIOUX CITY...WITH THE AREA
CLEAR OF LOW CLOUDS TO THE SOUTH OF THAT FRONT. FOR INSTANCE MANY
TEMPERATURES IN EASTERN NE AND SW IA HAVE WARMED WELL INTO THE 80S.
THERE IS COPIUS AMOUNTS OF LOW LEVEL THTE ADVECTION AND WARM AIR
ADVECTION TONIGHT ACROSS MUCH OF THIS FA. SO THE MILLION DOLLAR
QUESTION IS WHEN...AND WHERE WILL THE CAP BREAK TO ALLOW FOR
THUNDERSTORM DEVELOPMENT. CURRENTLY...THOUGHTS ARE THAT CONVECTIVE
INITIATION MAY FIRST FORM DOWNSTREAM TO THE SOUTH OR SOUTHEAST OF
THIS AREA WHERE THE TEMPERATURES HAVE REALLY WARMED. THE CONVECTION
SHOULD THEN PROCEED NORTHEASTWARD WHERE THE 0-6KM MEAN WIND IS 210
DEGREES AT 35 TO 40 KNOTS. THIS PLACES NW IA AND IMMEDIATE ADJACENT
AREAS AT A RISK FOR SEVERE WEATHER THIS EVENING. A SEVERE WEATHER
CHECKLIST DONE EARLIER TODAY FOR STORM LAKE IA REVEALED WIND SHEAR
OFF THE CHARTS VALID FOR 00Z/10. FOR INSTANCE 0-3KM HELICITY IS 555
M/S AND 0-3KM BULK SHEAR AT 47 KNOTS. ML CAPE IS NEAR 3200 J/KG WITH
THE CIN BEGINNING TO BREAK BY 00Z. SO ROTATING SUPERCELLS ARE
CERTAINLY POSSIBLE THIS EVENING WITH A THREAT FOR LARGE HAIL AND
ISOLATED TORNADOES ALONG THE WARM FRONT. HOWEVER ONE ITEM TO NOTE IS
THAT WITH THE FORWARD PROPOGATION OF THE STORMS...THE SEVERE WEATHER
THREAT WILL LIKELY NOT LAST THAT LONG. IN FACT AFTER ABOUT 03-04Z...
THINGS TO BEGIN TO STABILIZE RATHER RAPIDLY AS SOME DRY SLOTTING
BEGINS TO TAKE OVER OFF THE SURFACE. TO THE WEST...MOIST UPSLOPE
FLOW WILL DOMINATE OUR AREAS WEST OF I 29 AND IT APPEARS LIKELY THAT
SOME FOG AND DRIZZLE WILL LINGER THIS EVENING IN THOSE AREAS.
STILL... ELEVATED STABILITY IS ABUNDANT IN OUR WESTERN ZONES SO
DESPITE COOL SURFACE TEMPERATURES...GENERAL THUNDERSTORMS ARE A
THREAT FOR OUR WEST ALSO THIS EVENING. AS ELUDED TOO EARLIER...AFTER
MIDNIGHT THE DRY SLOTTING BEHIND THE WARM FRONT CONTINUES TO MOVE
NORTHWARD EAST OF I 29...WITH STRATUS LINGERING WEST OF I 29.
MEASURABLE RAINFALL WILL TAPER OFF. LOWS TONIGHT WILL BE MILD AS
COLD AIR IS LACKING EVEN AS FAR WEST AS SW ND. HAVE MID 40S GOING IN
OUR WEST...TO AROUND 60 IN STORM LAKE.  /MJF

AFTER THE BRIEF BREAK IN THE PRECIPITATION IN THE VERY EARLY MORNING
HOURS OF SUNDAY...WILL SEE SHOWERS AND ISOLATED THUNDERSTORMS
REDEVELOP OVER OUR SOUTH CENTRAL SOUTH DAKOTA ZONES BY MID MORNING
AS THE MAIN UPPER LEVEL LOW TRACKS OUT OF COLORADO. PRECIPITATION
WILL MOVE SLOWLY EASTWARD ACROSS THE CWA DURING THE DAY ON
SUNDAY...CONTINUING TO EXPAND TO THE EAST ON SUNDAY NIGHT AS THE
UPPER LEVEL LOW TRACKS INTO EASTERN MINNESOTA BY EARLY ON MONDAY.
THE ATMOSPHERE BECOME INCREASINGLY STABLE ON SUNDAY...SO THINK THE
MAIN THUNDERSTORM CHANCES WILL BE THROUGH THE BROOKINGS TO MARSHALL
AREA IN THE MORNING IN THE VICINITY OF A WANING MIDLEVEL
INSTABILITY/THETA E AXIS OVER THAT AREA. HAVE HIGHEST POPS ON SUNDAY
ACROSS OUR WEST AND NORTH IN AREA OF BEST UPPER LEVEL SYNOPTIC
LIFT...PER 700 TO 500 MB DIV Q FIELD. WITH AN EVER TIGHTENING
SURFACE GRADIENT AS THE SURFACE LOW LIFTS TO THE NORTHEAST...WILL
SEE NORTHWESTERLY WINDS PICK UP ACROSS THE AREA THROUGH THE
AFTERNOON...AND MAY BE BRUSHING WIND ADVISORY CRITERIA IN SOME OF
OUR WESTERN LOCALES. WITH OUR CWA BISECTED BY A COOL AIRMASS TO THE
WEST AND A WARMER AIRMASS TO THE EAST...WILL SEE A WIDE RANGE OF
TEMPERATURES ACROSS THE AREA ON SUNDAY. HIGHS WILL BE AROUND 50
THROUGH THE CHAMBERLAIN TO HURON CORRIDOR TO THE MID 70S OVER THE
SPENCER/STORM LAKE AREA.

PRECIPITATION WILL CONTINUE TO PULL TO THE NORTH AND EAST ON SUNDAY
NIGHT AS FORCING TRACKS OFF INTO THE UPPER MIDWEST. COOLER AIR WILL
SLOWLY FILTER INTO THE AREA ON SUNDAY NIGHT WITH WINDY CONDITIONS
PERSISTING UNDER A TIGHT GRADIENT/RAPID PRESSURE RISES/AND STRONG
COLD AIR ADVECTION. LOWS WILL BE IN THE MID 30S TO LOWER 40S.

MONDAY WILL BE A BETTER DAY WITH DECREASING CLOUDS AND TEMPERATURES
A COUPLE OF DEGREES ABOVE NORMAL AS SURFACE HIGH PRESSURE/UPPER
LEVEL RIDGING BUILD INTO THE REGION. THE DOWN SIDE TO THE DAY WILL
BE THE PERSISTENT STRONG WINDS. HIGHS ON MONDAY WILL BE IN THE RANGE
OF MID 50S TO LOWER 60S.

SOUTHERLY FLOW RETURNS TO THE AREA ON TUESDAY ON THE BACKSIDE OF THE
HIGH...WITH LESS WIND AND WARMER TEMPERATURES. HIGHS LOOKING TO BE
IN THE MID 60S TO AROUND 70. A BOUNDARY/LOW LEVEL CONVERGENCE ZONE
SETS UP ACROSS THE AREA ON TUESDAY NIGHT AND WEDNESDAY...INTERACTING
WITH A SHORTWAVE TRACKING OUT OF THE CENTRAL ROCKIES...AND KEEPING
A CHANCE OF SHOWERS OVER OUR AREA INTO WEDNESDAY NIGHT WITH THE
BOUNDARY NOT MAKING MUCH MOVEMENT THROUGH THE PERIOD. TEMPERATURES
WILL BE COOLER ON WEDNESDAY IN OUR WEST...BEHIND THE BOUNDARY...WITH
HIGHS IN THE 50S...WHILE ON THE WARM SIDE OF THE FEATURE
TEMPERATURES WILL RISE INTO THE UPPER 60S OVER PORTIONS OF NORTHWEST
IOWA. MAIN UPPER LEVEL TROUGH SWINGS THROUGH THE REGION ON
THURSDAY...WITH THE BOUNDARY FINALLY PULLING TO THE SOUTH AND
EAST...AND HIGHS IN THE LOWER TO MID 50S ACROSS THE COUNTY WARNING
AREA.

MODEL DIFFERENCES WITH HOW FAST PRECIPITATION PULLS OUT FOR THE END
OF NEXT WEEK. TEMPERATURES LOOK TO UNDERGO SLOW WARMING FOR FRIDAY
AND SATURDAY.  /JM

&&

.AVIATION...
STRATUS NORTH OF THE WARM FRONT WILL CONTINUE TO BE ABUNDANT ACROSS
THE NORTHERN AND WESTERN ZONES OF THE FSD FORECAST AREA THIS
EVENING. THEREFORE CONDITIONS WILL BE GENERALLY IFR IN MOST OF SW MN
AND AREAS WEST OF I 29 THIS EVENING. IN ADDITION...STRONG CAPPING IS
IN PLACE RIGHT NOW. BUT THE CAPPING IS EXPECTED TO BREAK AS A SHORT
WAVE OF ENERGY LIFTS NORTHEASWARD THIS EVENING. THUNDERSTORMS SHOULD
DEVELOP ACROSS THIS AREA AND MAY BECOME QUITE NUMEROUS ALONG AND
EAST OF I 29. THERE IS ALSO A SEVERE POTENTIAL FOR THOSE AREAS.
AFTER MIDNIGHT...THE NAM AND GFS LOW LEVEL RELATIVE HUMIDITY FIELDS
SHOW A LOT OF UPPER IFR TO MVFR STRATUS NUDGING EASTWARD ACROSS THE
FORECAST AREA...ADVANCING TO ALONG AND WEST OF A YANKTON SD...TO
SIOUX FALLS...TO MARSHALL MN LINE BY 12Z SUNDAY. THIS IS IN RESPONSE
TO LOW LEVEL WINDS BECOME WESTERLY...AND ONE CAN SEE THE AMOUNT OF
STRATUS CURRENTLY PRESENT IN CENTRAL SD. EAST OF THAT LINE...A FEW
SHOWERS OR THUNDERSTORMS MAY LINGER FROM 06Z TO 12Z SUNDAY...BUT
OTHERWISE CONDITIONS SHOULD BE MVFR TO VFR.  /MJF

&&

.FSD WATCHES/WARNINGS/ADVISORIES...
SD...NONE.
MN...NONE.
IA...NONE.
NE...NONE.
Hazardous weather outlook, Apr 9, 4:00 PM CDT, 11 hours 12 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SIOUX FALLS SD
400 PM CDT SAT APR 09 2011

SDZ038>040-050-052>071-MNZ071-072-080-081-089-090-097-098-
IAZ001>003-012>014-020>022-031-032-NEZ013-014-101200-
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-
400 PM CDT SAT APR 09 2011

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

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS...
LATE THIS AFTERNOON...ISOLATED THUNDERSTORMS MAY DEVELOP ACROSS
EASTERN NEBRASKA...AND PUSH INTO SOUTHEAST SOUTH DAKOTA AND
NORTHWEST IOWA BY EARLY EVENING. STORMS WILL DEVELOP VERY RAPIDLY
WITH A RAPID NORTHEAST MOVEMENT.

THIS IS A CONDITIONAL THREAT. IF STORMS DO DEVELOP AND CAN BECOME
ROOTED IN THE MORE MOIST AND UNSTABLE AIR MASS NEAR AND TO THE
EAST OF THE INTERSTATE 29 CORRIDOR...THEY WILL QUICKLY BECOME
SEVERE WITH A THREAT FOR HAIL TO AROUND 2 INCHES IN DIAMETER. IN
ADDITION WITH STRONG WINDS ABOVE THE SURFACE...WINDS UP TO 65 MPH
MAY OCCUR IN SOME OF THE STRONGEST CELLS. THERE IS EVEN A THREAT
FOR TORNADOES IN A SHORT WINDOW FROM 6 PM TO 9 PM ACROSS
NORTHWEST IOWA AND IMMEDIATELY ADJACENT AREAS. AS STORMS MOVE
NORTHWARD OF INTERSTATE 90...THE THREAT WILL CHANGE TO PRIMARILY
VERY LARGE HAIL UP TO AROUND 2 INCHES IN DIAMETER...ESPECIALLY
ACROSS EXTREME EASTERN SOUTH DAKOTA INTO SOUTHWEST MINNESOTA.
THE RISK FOR SEVERE STORMS SHOULD DIMINISH BY MIDNIGHT. OTHER
MORE SCATTERED STORMS MAY OCCUR FURTHER WEST OF INTERSTATE
29...BUT ARE NOT EXPECTED TO BECOME SEVERE...WITH SMALL HAIL THE
MAIN THREAT.

FLOODING...
FLOODING WILL CONTINUE OVER MUCH OF THE BIG SIOUX AND JAMES
RIVERS FOR THE FORESEEABLE FUTURE. BY THE MIDDLE OF THE
WEEK...THE DES MOINES RIVER IS EXPECTED TO DROP BELOW FLOOD STAGE
AT WINDOM AND JACKSON.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

NORTHWEST WINDS BEHIND AN EXITING AREA OF LOW PRESSURE ON SUNDAY
NIGHT AND MONDAY WILL REACH 25 TO 35 MPH...WITH SOME GUSTS OVER
40 MPH POSSIBLE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE POSSIBLE AFTER 5 PM MAINLY ALONG AND
EAST
OF INTERSTE 29.

&&

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, Apr 9, 10:34 PM CDT, 4 hours 38 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1034 PM CDT SAT APR 09 2011

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

0640 PM     HAIL             SLOAN                   42.23N 96.22W
04/09/2011  E0.75 INCH       WOODBURY           IA   LAW ENFORCEMENT

0640 PM     HAIL             SALIX                   42.31N 96.29W
04/09/2011  E1.00 INCH       WOODBURY           IA   LAW ENFORCEMENT

            AT THE JUNCTION OF 290TH AVE AND K45

0646 PM     HAIL             SALIX                   42.31N 96.29W
04/09/2011  E1.00 INCH       WOODBURY           IA   TRAINED SPOTTER

0649 PM     HAIL             SALIX                   42.31N 96.29W
04/09/2011  E1.00 INCH       WOODBURY           IA   LAW ENFORCEMENT

            MARBLE TO QUARTER SIZE HAIL

0650 PM     HAIL             1 NW DANTE              43.05N 98.20W
04/09/2011  E1.00 INCH       CHARLES MIX        SD   TRAINED SPOTTER

0700 PM     HAIL             SMITHLAND               42.23N 95.93W
04/09/2011  E1.25 INCH       WOODBURY           IA   TRAINED SPOTTER

0729 PM     HAIL             2 W BATTLE CREEK        42.32N 95.64W
04/09/2011  M1.00 INCH       IDA                IA   EMERGENCY MNGR

            PEA TO QUARTER SIZE

0733 PM     HAIL             3 W BATTLE CREEK        42.32N 95.66W
04/09/2011  M1.50 INCH       IDA                IA   EMERGENCY MNGR

0750 PM     HAIL             WAKONDA                 43.01N 97.11W
04/09/2011  E1.00 INCH       CLAY               SD   EMERGENCY MNGR

0757 PM     HAIL             IDA GROVE               42.34N 95.47W
04/09/2011  E1.50 INCH       IDA                IA   LAW ENFORCEMENT

0844 PM     HAIL             3 S SALEM               43.68N 97.39W
04/09/2011  E1.00 INCH       MCCOOK             SD   EMERGENCY MNGR

0845 PM     HAIL             2 S GALVA               42.48N 95.42W
04/09/2011  E1.00 INCH       IDA                IA   TRAINED SPOTTER

0846 PM     HAIL             3 S SALEM               43.68N 97.39W
04/09/2011  E1.50 INCH       MCCOOK             SD   EMERGENCY MNGR

0903 PM     HAIL             PIPESTONE               44.00N 96.31W
04/09/2011  E1.00 INCH       PIPESTONE          MN   PUBLIC

0903 PM     HAIL             PIPESTONE               44.00N 96.31W
04/09/2011  E1.00 INCH       PIPESTONE          MN   TRAINED SPOTTER

0924 PM     HAIL             RUSSELL                 44.32N 95.95W
04/09/2011  E0.88 INCH       LYON               MN   TRAINED SPOTTER

0927 PM     HAIL             RUSSELL                 44.32N 95.95W
04/09/2011  E1.50 INCH       LYON               MN   TRAINED SPOTTER

0946 PM     TORNADO          7 W STORM LAKE          42.64N 95.34W
04/09/2011                   BUENA VISTA        IA   STORM CHASER

            TWO TORNADOES REPORTED BY CHASERS 7W OF STORM LAKE
            RELAYED BY MEDIA

1007 PM     HAIL             MERRILL                 42.72N 96.25W
04/09/2011  E0.88 INCH       PLYMOUTH           IA   FIRE DEPT/RESCUE

            DIME TO NICKLE

1013 PM     HAIL             LE MARS                 42.79N 96.17W
04/09/2011  E2.00 INCH       PLYMOUTH           IA   BROADCAST MEDIA

&&

DMORIN
Local storm report, Apr 9, 10:55 PM CDT, 4 hours 17 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1055 PM CDT SAT APR 09 2011

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

1054 PM     HAIL             SIOUX RAPIDS            42.89N 95.15W
04/09/2011  E1.75 INCH       BUENA VISTA        IA   TRAINED SPOTTER

            PEA TO GOLF BALL SIZE HAIL

&&

DMORIN
Local storm report, Apr 9, 11:15 PM CDT, 3 hours 57 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1115 PM CDT SAT APR 09 2011

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

0820 PM     TORNADO          6 SW ARTHUR             42.27N 95.41W
04/09/2011                   IDA                IA   STORM CHASER

            STOVE PIPE SHAPED TORNADO REPORTED BY STORM CHASER

&&

DMORIN
Local storm report, Apr 9, 11:35 PM CDT, 3 hours 37 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1135 PM CDT SAT APR 09 2011

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

1131 PM     HAIL             3 SSW GREENVILLE        42.97N 95.17W
04/09/2011  E1.00 INCH       CLAY               IA   TRAINED SPOTTER

            COVERING APPROXIMATELY HALF OF THE GROUND

&&

DMORIN
Local storm report, Apr 10, 12:00 AM CDT, 3 hours 12 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1200 AM CDT SUN APR 10 2011

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

0640 PM     HAIL             SLOAN                   42.23N 96.22W
04/09/2011  E0.75 INCH       WOODBURY           IA   LAW ENFORCEMENT

0640 PM     HAIL             SALIX                   42.31N 96.29W
04/09/2011  E1.00 INCH       WOODBURY           IA   LAW ENFORCEMENT

            AT THE JUNCTION OF 290TH AVE AND K45

0646 PM     HAIL             SALIX                   42.31N 96.29W
04/09/2011  E1.00 INCH       WOODBURY           IA   TRAINED SPOTTER

0649 PM     HAIL             SALIX                   42.31N 96.29W
04/09/2011  E1.00 INCH       WOODBURY           IA   LAW ENFORCEMENT

            MARBLE TO QUARTER SIZE HAIL

0650 PM     HAIL             1 NW DANTE              43.05N 98.20W
04/09/2011  E1.00 INCH       CHARLES MIX        SD   TRAINED SPOTTER

0700 PM     HAIL             SMITHLAND               42.23N 95.93W
04/09/2011  E1.25 INCH       WOODBURY           IA   TRAINED SPOTTER

0729 PM     HAIL             2 W BATTLE CREEK        42.32N 95.64W
04/09/2011  M1.00 INCH       IDA                IA   EMERGENCY MNGR

            PEA TO QUARTER SIZE

0733 PM     HAIL             3 W BATTLE CREEK        42.32N 95.66W
04/09/2011  M1.50 INCH       IDA                IA   EMERGENCY MNGR

0750 PM     HAIL             WAKONDA                 43.01N 97.11W
04/09/2011  E1.00 INCH       CLAY               SD   EMERGENCY MNGR

0757 PM     HAIL             IDA GROVE               42.34N 95.47W
04/09/2011  E1.50 INCH       IDA                IA   LAW ENFORCEMENT

0820 PM     TORNADO          6 SW ARTHUR             42.27N 95.41W
04/09/2011                   IDA                IA   STORM CHASER

            STOVE PIPE SHAPED TORNADO REPORTED BY STORM CHASER

0844 PM     HAIL             3 S SALEM               43.68N 97.39W
04/09/2011  E1.00 INCH       MCCOOK             SD   EMERGENCY MNGR

0845 PM     HAIL             2 S GALVA               42.48N 95.42W
04/09/2011  E1.00 INCH       IDA                IA   TRAINED SPOTTER

0846 PM     HAIL             3 S SALEM               43.68N 97.39W
04/09/2011  E1.50 INCH       MCCOOK             SD   EMERGENCY MNGR

0903 PM     HAIL             PIPESTONE               44.00N 96.31W
04/09/2011  E1.00 INCH       PIPESTONE          MN   PUBLIC

0903 PM     HAIL             PIPESTONE               44.00N 96.31W
04/09/2011  E1.00 INCH       PIPESTONE          MN   TRAINED SPOTTER

0924 PM     HAIL             RUSSELL                 44.32N 95.95W
04/09/2011  E0.88 INCH       LYON               MN   TRAINED SPOTTER

0927 PM     HAIL             RUSSELL                 44.32N 95.95W
04/09/2011  E1.50 INCH       LYON               MN   TRAINED SPOTTER

0946 PM     TORNADO          7 W STORM LAKE          42.64N 95.34W
04/09/2011                   BUENA VISTA        IA   STORM CHASER

            TWO TORNADOES REPORTED BY CHASERS 7W OF STORM LAKE
            RELAYED BY MEDIA

1007 PM     HAIL             MERRILL                 42.72N 96.25W
04/09/2011  E0.88 INCH       PLYMOUTH           IA   FIRE DEPT/RESCUE

            DIME TO NICKLE

1013 PM     HAIL             LE MARS                 42.79N 96.17W
04/09/2011  E2.00 INCH       PLYMOUTH           IA   BROADCAST MEDIA

1054 PM     HAIL             SIOUX RAPIDS            42.89N 95.15W
04/09/2011  E1.75 INCH       BUENA VISTA        IA   TRAINED SPOTTER

            PEA TO GOLF BALL SIZE HAIL

1131 PM     HAIL             3 SSW GREENVILLE        42.97N 95.17W
04/09/2011  E1.00 INCH       CLAY               IA   TRAINED SPOTTER

            COVERING APPROXIMATELY HALF OF THE GROUND

&&

DMORIN
Local storm report, Apr 10, 12:47 AM CDT, 2 hours 25 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1247 AM CDT SUN APR 10 2011

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

1225 AM     HAIL             4 ESE BRONSON           42.39N 96.14W
04/10/2011  E1.00 INCH       WOODBURY           IA   TRAINED SPOTTER

&&

JSHEEHAN

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 9, 8:55 PM CDTSevere Thunderstorm WarningFSDLincoln, Lyon, Murray, Pipestone50 min
Apr 9, 9:17 PM CDTSevere Thunderstorm WarningFSDPipestone, Rock43 min
Apr 9, 9:45 PM CDTSevere Thunderstorm WarningFSDLyon30 min
Apr 9, 9:54 PM CDTSevere Thunderstorm WarningFSDMurray, Nobles, Pipestone, Rock51 min
Apr 9, 11:16 PM CDTSevere Thunderstorm WarningFSDJackson, Nobles21 min
Apr 10, 10:42 AM CDTRiver Flood WarningFSDLyon22 hr

Nearby

River Flood Warnings in Minnesota, 2011Every river flood warning in 2011

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.