Alert archive / South Dakota / River Flood Warnings in 2011
River Flood Warning 6, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this river flood warning at Feb 18, 2011, 1:31 PM CST for Sioux County, Iowa; Lincoln County, Union County, South Dakota. It took effect at Feb 19, 2011, 12:00 AM CST. It was in force for 34 hr.
The area
The counties it named.
The facts
- Issued
- Feb 18, 2011, 1:31 PM CST (19:31 UTC)
- In effect from
- Feb 19, 2011, 12:00 AM CST
- Expired
- Feb 20, 2011, 10:05 AM CST
- In force
- 34 hr
- Issued by
- NWS Sioux Falls, SD
- Flood severity
- Minor
Counties Sioux County, IA, Lincoln County, SD, Union County, SD
The radar
The Sioux Falls radar (KFSD), 61 km from the middle of the area, began a volume at 19:29 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 text
As transmitted, in the capitals the NWS used until 2016.
690
WGUS43 KFSD 181931
FLWFSD
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
131 PM CST FRI FEB 18 2011
...THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A FLOOD
WARNING FOR THE FOLLOWING RIVERS IN IOWA...SOUTH DAKOTA...
BIG SIOUX RIVER AT HAWARDEN
BIG SIOUX RIVER AT AKRON
OCHEYEDAN RIVER NEAR SPENCER
.THE FOLLOWING RIVER FORECASTS INCLUDE FORECAST PRECIPITATION THROUGH
THIS AFTERNOON. 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-SDC083-127-192331-
/O.NEW.KFSD.FL.W.0006.110219T0600Z-110221T0600Z/
/HAWI4.1.SM.110219T0600Z.110219T1200Z.110220T0600Z.NO/
131 PM CST FRI FEB 18 2011
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
* FLOOD WARNING FOR
THE BIG SIOUX RIVER AT HAWARDEN.
* FROM LATE TONIGHT TO LATE SUNDAY NIGHT.
* AT 01PM FRIDAY THE STAGE WAS ESTIMATED AT 14.3 FEET.
* MINOR FLOODING IS FORECAST.
* FLOOD STAGE IS 15.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 12 AM SATURDAY AND CREST NEAR
15.1 FEET BY SATURDAY FEBRUARY 19. THE RIVER WILL FALL BELOW FLOOD
STAGE BY SUNDAY FEBRUARY 20.
* AT STAGES NEAR 15.0 FEET...AGRICULTURAL FLOODING BEGINS ON THE
SOUTH DAKOTA SIDE OF THE RIVER.
$$
IAC149-SDC127-192330-
/O.NEW.KFSD.FL.W.0007.110219T0959Z-110221T0000Z/
/AKRI4.1.SM.110219T0959Z.110219T1200Z.110220T0000Z.NO/
131 PM CST FRI FEB 18 2011
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
* FLOOD WARNING FOR
THE BIG SIOUX RIVER AT AKRON.
* FROM LATE TONIGHT TO SUNDAY EVENING.
* AT 01PM FRIDAY THE STAGE WAS 15.0 FEET.
* MINOR FLOODING IS FORECAST.
* FLOOD STAGE IS 16.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 4 AM SATURDAY AND CREST NEAR
16.1 FEET BY SATURDAY FEBRUARY 19. THE RIVER WILL FALL BELOW FLOOD
STAGE BY SATURDAY FEBRUARY 19.
* AT STAGES NEAR 16.0 FEET...SEVERAL FARM LEVEES ARE OVERTOPPED WITH
SIGNIFICANT FLOODING OF AGRICULTURAL LANDS.
$$
IAC041-192330-
/O.NEW.KFSD.FL.W.0008.110218T2347Z-110220T1800Z/
/SPOI4.1.SM.110218T2347Z.110219T0600Z.110219T1800Z.NO/
131 PM CST FRI FEB 18 2011
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
* FLOOD WARNING FOR
THE OCHEYEDAN RIVER NEAR SPENCER.
* FROM THIS AFTERNOON TO SUNDAY AFTERNOON.
* AT 12PM FRIDAY THE STAGE WAS 7.8 FEET.
* MINOR FLOODING IS FORECAST.
* FLOOD STAGE IS 8.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 6 PM FRIDAY AND CREST NEAR 8.3
FEET BY SATURDAY FEBRUARY 19. THE RIVER WILL FALL BELOW FLOOD STAGE
BY SATURDAY FEBRUARY 19.
* AT STAGES NEAR 8.0 FEET...MINOR FLOODING OF PASTURE LAND BEGINS.
$$
&&
LOCATION FLOOD LATEST OBSERVED MAXIMUM FORECAST
STAGE STAGE TIME STAGE TIME
BIG SIOUX RIVER
HAWI4 15.0 14.30 FRI 1 PM 15.1 SAT 6 AM
AKRI4 16.0 14.98 FRI 1 PM 16.1 SAT 6 AM
OCHEYEDAN RIVER
SPOI4 8.0 7.85 FRI 1 PM 8.3 SAT 12 AM
MG4 follow-up statements
435
WGUS83 KFSD 190325
FLSFSD
FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
925 PM CST FRI FEB 18 2011
...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN IOWA...
SOUTH DAKOTA...
BIG SIOUX RIVER AT AKRON
FLOYD RIVER AT ALTON
...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN IOWA...
SOUTH DAKOTA...
BIG SIOUX RIVER AT HAWARDEN
WILLOW CREEK NEAR CROOKS
OCHEYEDAN RIVER NEAR SPENCER
LITTLE SIOUX RIVER NEAR MILFORD
LITTLE SIOUX RIVER ABOVE SPENCER
LITTLE SIOUX RIVER AT SPENCER
LITTLE SIOUX RIVER AT CHEROKEE
.THE FOLLOWING RIVER FORECASTS INCLUDE FORECAST PRECIPITATION THROUGH
THIS AFTERNOON. ANY ADDITIONAL FUTURE RAINS COULD AFFECT THE CREST
FORECASTS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...DO NOT DRIVE CARS THROUGH FLOODED AREAS. THE WATER
DEPTH AND ROAD CONDITION MAY BE UNSAFE.
ADDITIONAL INFORMATION IS AVAILABLE AT
HTTP://WWW.WATER.WEATHER.GOV/AHPS2/INDEX.PHP?WFO=FSD
STAY TUNED FOR FURTHER UPDATES BY LISTENING TO NOAA WEATHER RADIO...
OR YOUR LOCAL RADIO AND TV STATIONS.
THE NEXT SCHEDULED STATEMENT WILL BE ISSUED TOMORROW MORNING.
&&
IAC167-SDC083-127-210600-
/O.CON.KFSD.FL.W.0006.110219T0600Z-110221T0600Z/
/HAWI4.1.SM.110219T0600Z.110219T1200Z.110220T0600Z.NO/
925 PM CST FRI FEB 18 2011
THE FLOOD WARNING CONTINUES FOR
THE BIG SIOUX RIVER AT HAWARDEN.
* UNTIL LATE SUNDAY NIGHT.
* AT 08PM FRIDAY THE STAGE WAS ESTIMATED AT 14.8 FEET.
* FLOOD STAGE IS 15.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 12 AM SATURDAY AND CREST NEAR
15.1 FEET BY SATURDAY FEBRUARY 19. THE RIVER WILL FALL BELOW FLOOD
STAGE BY SUNDAY FEBRUARY 20.
* AT STAGES NEAR 15.0 FEET...AGRICULTURAL FLOODING BEGINS ON THE
SOUTH DAKOTA SIDE OF THE RIVER.
$$
IAC149-SDC127-210000-
/O.EXT.KFSD.FL.W.0007.110219T1048Z-110221T0000Z/
/AKRI4.1.SM.110219T1048Z.110219T1200Z.110220T0000Z.NO/
925 PM CST FRI FEB 18 2011
THE FLOOD WARNING CONTINUES FOR
THE BIG SIOUX RIVER AT AKRON.
* FROM LATE TONIGHT TO SUNDAY EVENING.
* AT 09PM FRIDAY THE STAGE WAS 15.3 FEET.
* FLOOD STAGE IS 16.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 5 AM SATURDAY AND CREST NEAR
16.1 FEET BY SATURDAY FEBRUARY 19. THE RIVER WILL FALL BELOW FLOOD
STAGE BY SATURDAY FEBRUARY 19.
* AT STAGES NEAR 16.0 FEET...SEVERAL FARM LEVEES ARE OVERTOPPED WITH
SIGNIFICANT FLOODING OF AGRICULTURAL LANDS.
$$
SDC099-260724-
/O.CON.KFSD.FL.W.0002.000000T0000Z-000000T0000Z/
/WCCS2.1.SM.000000T0000Z.110218T2245Z.000000T0000Z.NO/
925 PM CST FRI FEB 18 2011
THE FLOOD WARNING CONTINUES FOR
THE WILLOW CREEK NEAR CROOKS.
* AT 08PM FRIDAY THE STAGE WAS 10.5 FEET.
* FLOOD STAGE IS 9.0 FEET.
* AT STAGES NEAR 11.0 FEET...THE HIGHER BANKS OVERFLOW FLOODING
SIGNIFICANT AMOUNTS OF PASTURE LAND AND SOME CROP LAND.
$$
IAC167-200515-
/O.EXT.KFSD.FL.W.0003.000000T0000Z-110220T0515Z/
/ALTI4.1.SM.110218T1205Z.110219T0300Z.110219T0515Z.NO/
925 PM CST FRI FEB 18 2011
...FLOOD WARNING EXTENDED UNTIL 11 PM SATURDAY...
THE FLOOD WARNING CONTINUES FOR
THE FLOYD RIVER AT ALTON.
* AT 09PM FRIDAY THE STAGE WAS 12.9 FEET.
* FLOOD STAGE IS 12.0 FEET.
* RECENT ACTIVITY...THE RIVER ROSE ABOVE FLOOD STAGE ON FRIDAY
FEBRUARY 18.
* FORECAST...THE RIVER WILL CONTINUE TO FALL TO BELOW FLOOD STAGE BY
FRIDAY FEBRUARY 18.
* AT STAGES NEAR 12.0 FEET...FLOODING BEGINS TO AFFECT THE LOWER
LYING AGRICULTURAL LANDS ALONG THE RIVER.
$$
IAC041-201800-
/O.CON.KFSD.FL.W.0008.000000T0000Z-110220T1800Z/
/SPOI4.1.SM.110218T2022Z.110219T0600Z.110219T1800Z.NO/
925 PM CST FRI FEB 18 2011
THE FLOOD WARNING CONTINUES FOR
THE OCHEYEDAN RIVER NEAR SPENCER.
* AT 08PM FRIDAY THE STAGE WAS 8.4 FEET.
* FLOOD STAGE IS 8.0 FEET.
* RECENT ACTIVITY...THE RIVER ROSE ABOVE FLOOD STAGE ON FRIDAY
FEBRUARY 18.
* FORECAST...THE RIVER WILL CREST NEAR 8.6 FEET BY SATURDAY FEBRUARY
19. THE RIVER WILL FALL BELOW FLOOD STAGE SATURDAY FEBRUARY 19.
* AT STAGES NEAR 8.0 FEET...MINOR FLOODING OF PASTURE LAND BEGINS.
$$
IAC041-059-260724-
/O.CON.KFSD.FL.W.0004.000000T0000Z-000000T0000Z/
/MIFI4.1.SM.000000T0000Z.110218T1400Z.000000T0000Z.NO/
925 PM CST FRI FEB 18 2011
THE FLOOD WARNING CONTINUES FOR
THE LITTLE SIOUX RIVER NEAR MILFORD.
* AT 08AM FRIDAY THE STAGE WAS 12.6 FEET.
* FLOOD STAGE IS 12.0 FEET.
* AT STAGES NEAR 12.0 FEET...MINOR FLOODING OF LOW LYING AGRICULTURAL
LANDS BEGINS.
$$
IAC041-059-260724-
/O.CON.KFSD.FL.W.0001.000000T0000Z-000000T0000Z/
/LSSI4.1.SM.110218T0240Z.110218T1000Z.000000T0000Z.UU/
925 PM CST FRI FEB 18 2011
THE FLOOD WARNING CONTINUES FOR
THE LITTLE SIOUX RIVER ABOVE SPENCER.
* AT 08PM FRIDAY THE STAGE WAS 10.1 FEET.
* FLOOD STAGE IS 10.0 FEET.
* AT STAGES NEAR 10.0 FEET...MINOR FLOODING OF AGRICULTURAL LANDS
BEGINS.
$$
IAC041-212000-
/O.CON.KFSD.FL.W.0005.000000T0000Z-110221T2000Z/
/SPWI4.1.SM.110218T1108Z.110219T1200Z.110220T2000Z.NO/
925 PM CST FRI FEB 18 2011
THE FLOOD WARNING CONTINUES FOR
THE LITTLE SIOUX RIVER AT SPENCER.
* AT 08PM FRIDAY THE STAGE WAS ESTIMATED AT 11.0 FEET.
* FLOOD STAGE IS 10.0 FEET.
* FORECAST...CREST NEAR 11.3 FEET BY SATURDAY FEBRUARY 19. THE RIVER
WILL FALL BELOW FLOOD STAGE BY SUNDAY FEBRUARY 20.
* AT STAGES NEAR 10.0 FEET...THE RIGHT BANK OVERFLOWS...AND MINOR
FLOODING OF THE SPENCER CITY PARK AND SOME RURAL AGRICULTURAL AREAS
BEGINS.
$$
IAC035-201100-
/O.CON.KFSD.FL.W.0009.000000T0000Z-110220T1100Z/
/CHKI4.1.ER.000000T0000Z.110218T2030Z.110219T1100Z.NO/
925 PM CST FRI FEB 18 2011
THE FLOOD WARNING CONTINUES FOR
THE LITTLE SIOUX RIVER AT CHEROKEE.
* AT 08PM FRIDAY THE STAGE WAS 18.3 FEET.
* FLOOD STAGE IS 17.0 FEET.
* FORECAST...THE RIVER WILL CONTINUE TO FALL TO BELOW FLOOD STAGE BY
SATURDAY FEBRUARY 19.
* AT STAGES NEAR 18.0 FEET...CHEROKEE CITY PARK BEGINS TO FLOOD ON
THE SOUTH BANK OF THE RIVER.
$$
&&
LOCATION FLOOD LATEST OBSERVED MAXIMUM FORECAST RECENT OBSERVED
STAGE STAGE TIME STAGE TIME CREST TIME
BIG SIOUX RIVER
HAWI4 15.0 14.8 FRI 1 PM 15.1 SAT 6 AM 14.8 FRI FEB 18
AKRI4 16.0 15.31 FRI 9 PM 16.1 SAT 6 AM 15.3 FRI FEB 18
SKUNK CREEK
WCCS2 9.0 10.50 FRI 8 PM M 10.9 FRI FEB 18
FLOYD RIVER
ALTI4 12.0 12.90 FRI 9 PM 11.7 SAT 12 AM 12.9 FRI FEB 18
OCHEYEDAN RIVER
SPOI4 8.0 8.41 FRI 9 PM 8.6 SAT 12 AM 8.4 FRI FEB 18
LITTLE SIOUX RIVER
MIFI4 12.0 12.60 FRI 8 AM M 12.6 FRI FEB 18
LSSI4 10.0 10.09 FRI 8 PM M 10.6 FRI FEB 18
SPWI4 10.0 11.00 FRI 8 PM 11.3 SAT 6 AM 9.9 FRI FEB 18
CHKI4 17.0 18.30 FRI 2 PM 18.0 SAT 12 AM 18.3 FRI FEB 18375
WGUS83 KFSD 190432
FLSFSD
FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1032 PM CST FRI FEB 18 2011
...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN IOWA...
FLOYD RIVER AT ALTON
...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN IOWA...
SOUTH DAKOTA...
BIG SIOUX RIVER AT HAWARDEN
BIG SIOUX RIVER AT AKRON
WILLOW CREEK NEAR CROOKS
OCHEYEDAN RIVER NEAR SPENCER
LITTLE SIOUX RIVER NEAR MILFORD
LITTLE SIOUX RIVER ABOVE SPENCER
LITTLE SIOUX RIVER AT SPENCER
LITTLE SIOUX RIVER AT CHEROKEE
.THE FOLLOWING RIVER FORECASTS INCLUDE FORECAST PRECIPITATION THROUGH
THIS AFTERNOON. 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.
&&
SDC099-260832-
/O.CON.KFSD.FL.W.0002.000000T0000Z-000000T0000Z/
/WCCS2.1.SM.000000T0000Z.110218T2245Z.000000T0000Z.NO/
1032 PM CST FRI FEB 18 2011
THE FLOOD WARNING CONTINUES FOR
THE WILLOW CREEK NEAR CROOKS.
* AT 09PM FRIDAY THE STAGE WAS 10.4 FEET.
* FLOOD STAGE IS 9.0 FEET.
* AT STAGES NEAR 11.0 FEET...THE HIGHER BANKS OVERFLOW FLOODING
SIGNIFICANT AMOUNTS OF PASTURE LAND AND SOME CROP LAND.
$$
IAC167-SDC083-127-210600-
/O.CON.KFSD.FL.W.0006.110219T0600Z-110221T0600Z/
/HAWI4.1.SM.110219T0600Z.110219T1200Z.110220T0600Z.NO/
1032 PM CST FRI FEB 18 2011
THE FLOOD WARNING CONTINUES FOR
THE BIG SIOUX RIVER AT HAWARDEN.
* UNTIL LATE SUNDAY NIGHT.
* AT 08PM FRIDAY THE STAGE WAS ESTIMATED AT 14.8 FEET.
* FLOOD STAGE IS 15.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 12 AM SATURDAY AND CREST NEAR
15.1 FEET BY SATURDAY FEBRUARY 19. THE RIVER WILL FALL BELOW FLOOD
STAGE BY SUNDAY FEBRUARY 20.
* AT STAGES NEAR 15.0 FEET...AGRICULTURAL FLOODING BEGINS ON THE
SOUTH DAKOTA SIDE OF THE RIVER.
$$
IAC149-SDC127-210000-
/O.CON.KFSD.FL.W.0007.110219T1048Z-110221T0000Z/
/AKRI4.1.SM.110219T1048Z.110219T1200Z.110220T0000Z.NO/
1032 PM CST FRI FEB 18 2011
THE FLOOD WARNING CONTINUES FOR
THE BIG SIOUX RIVER AT AKRON.
* FROM LATE TONIGHT TO SUNDAY EVENING.
* AT 10PM FRIDAY THE STAGE WAS 15.4 FEET.
* FLOOD STAGE IS 16.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE BY 5 AM SATURDAY AND CREST NEAR
16.1 FEET BY SATURDAY FEBRUARY 19. THE RIVER WILL FALL BELOW FLOOD
STAGE BY SATURDAY FEBRUARY 19.
* AT STAGES NEAR 16.0 FEET...SEVERAL FARM LEVEES ARE OVERTOPPED WITH
SIGNIFICANT FLOODING OF AGRICULTURAL LANDS.
$$
IAC167-201513-
/O.EXT.KFSD.FL.W.0003.000000T0000Z-110220T1513Z/
/ALTI4.1.SM.110218T1205Z.110219T0415Z.110219T1513Z.NO/
1032 PM CST FRI FEB 18 2011
...FLOOD WARNING EXTENDED UNTIL 9 AM SUNDAY...
THE FLOOD WARNING CONTINUES FOR
THE FLOYD RIVER AT ALTON.
* AT 10PM FRIDAY THE STAGE WAS 13.2 FEET.
* FLOOD STAGE IS 12.0 FEET.
* RECENT ACTIVITY...THE RIVER ROSE ABOVE FLOOD STAGE ON FRIDAY
FEBRUARY 18.
* FORECAST...THE RIVER WILL FALL TO BELOW FLOOD STAGE BY
SATURDAY FEBRUARY 19.
* AT STAGES NEAR 12.0 FEET...FLOODING BEGINS TO AFFECT THE LOWER
LYING AGRICULTURAL LANDS ALONG THE RIVER.
$$
IAC041-201800-
/O.CON.KFSD.FL.W.0008.000000T0000Z-110220T1800Z/
/SPOI4.1.SM.110218T2022Z.110219T0600Z.110219T1800Z.NO/
1032 PM CST FRI FEB 18 2011
THE FLOOD WARNING CONTINUES FOR
THE OCHEYEDAN RIVER NEAR SPENCER.
* AT 09PM FRIDAY THE STAGE WAS 8.4 FEET.
* FLOOD STAGE IS 8.0 FEET.
* RECENT ACTIVITY...THE RIVER ROSE ABOVE FLOOD STAGE ON FRIDAY
FEBRUARY 18.
* FORECAST...THE RIVER WILL CREST NEAR 8.6 FEET BY SATURDAY FEBRUARY
19. THE RIVER WILL FALL BELOW FLOOD STAGE SATURDAY FEBRUARY 19.
* AT STAGES NEAR 8.0 FEET...MINOR FLOODING OF PASTURE LAND BEGINS.
$$
IAC041-059-260831-
/O.CON.KFSD.FL.W.0004.000000T0000Z-000000T0000Z/
/MIFI4.1.SM.000000T0000Z.110218T1400Z.000000T0000Z.NO/
1032 PM CST FRI FEB 18 2011
THE FLOOD WARNING CONTINUES FOR
THE LITTLE SIOUX RIVER NEAR MILFORD.
* AT 08AM FRIDAY THE STAGE WAS 12.6 FEET.
* FLOOD STAGE IS 12.0 FEET.
* AT STAGES NEAR 12.0 FEET...MINOR FLOODING OF LOW LYING AGRICULTURAL
LANDS BEGINS.
$$
IAC041-059-260831-
/O.CON.KFSD.FL.W.0001.000000T0000Z-000000T0000Z/
/LSSI4.1.SM.110218T0240Z.110218T1000Z.000000T0000Z.UU/
1032 PM CST FRI FEB 18 2011
THE FLOOD WARNING CONTINUES FOR
THE LITTLE SIOUX RIVER ABOVE SPENCER.
* AT 10PM FRIDAY THE STAGE WAS 10.0 FEET.
* FLOOD STAGE IS 10.0 FEET.
* AT STAGES NEAR 10.0 FEET...MINOR FLOODING OF AGRICULTURAL LANDS
BEGINS.
$$
IAC041-212000-
/O.CON.KFSD.FL.W.0005.000000T0000Z-110221T2000Z/
/SPWI4.1.SM.110218T1108Z.110219T1200Z.110220T2000Z.NO/
1032 PM CST FRI FEB 18 2011
THE FLOOD WARNING CONTINUES FOR
THE LITTLE SIOUX RIVER AT SPENCER.
* AT 08PM FRIDAY THE STAGE WAS ESTIMATED AT 11.0 FEET.
* FLOOD STAGE IS 10.0 FEET.
* FORECAST...CREST NEAR 11.3 FEET BY SATURDAY FEBRUARY 19. THE RIVER
WILL FALL BELOW FLOOD STAGE BY SUNDAY FEBRUARY 20.
* AT STAGES NEAR 10.0 FEET...THE RIGHT BANK OVERFLOWS...AND MINOR
FLOODING OF THE SPENCER CITY PARK AND SOME RURAL AGRICULTURAL AREAS
BEGINS.
$$
IAC035-201100-
/O.CON.KFSD.FL.W.0009.000000T0000Z-110220T1100Z/
/CHKI4.1.ER.000000T0000Z.110218T2030Z.110219T1100Z.NO/
1032 PM CST FRI FEB 18 2011
THE FLOOD WARNING CONTINUES FOR
THE LITTLE SIOUX RIVER AT CHEROKEE.
* AT 02PM FRIDAY THE STAGE WAS 18.3 FEET.
* FLOOD STAGE IS 17.0 FEET.
* FORECAST...THE RIVER WILL CONTINUE TO FALL TO BELOW FLOOD STAGE BY
SATURDAY FEBRUARY 19.
* AT STAGES NEAR 18.0 FEET...CHEROKEE CITY PARK BEGINS TO FLOOD ON
THE SOUTH BANK OF THE RIVER.
$$
&&
LOCATION FLOOD LATEST OBSERVED MAXIMUM FORECAST RECENT OBSERVED
STAGE STAGE TIME STAGE TIME CREST TIME
SKUNK CREEK
WCCS2 9.0 10.40 FRI 10 PM M 10.9 FRI FEB 18
BIG SIOUX RIVER
HAWI4 15.0 14.30 FRI 1 PM 15.1 SAT 6 AM 14.3 FRI FEB 18
AKRI4 16.0 15.37 FRI 10 PM 16.1 SAT 6 AM 15.4 FRI FEB 18
FLOYD RIVER
ALTI4 12.0 13.18 FRI 10 PM 13.1 SAT 12 AM 13.2 FRI FEB 18
OCHEYEDAN RIVER
SPOI4 8.0 8.44 FRI 10 PM 8.6 SAT 12 AM 8.4 FRI FEB 18
LITTLE SIOUX RIVER
MIFI4 12.0 12.60 FRI 8 AM M 12.6 FRI FEB 18
LSSI4 10.0 10.01 FRI 10 PM M 10.6 FRI FEB 18
SPWI4 10.0 9.91 FRI 7 AM 11.3 SAT 6 AM 9.9 FRI FEB 18
CHKI4 17.0 18.30 FRI 2 PM 18.0 SAT 12 AM 18.3 FRI FEB 18570
WGUS83 KFSD 191648
FLSFSD
FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1047 AM CST SAT FEB 19 2011
...THE FLOOD WARNING IS CANCELLED FOR THE FOLLOWING RIVERS IN IOWA...
FLOYD RIVER AT ALTON
LITTLE SIOUX RIVER ABOVE SPENCER
LITTLE SIOUX RIVER AT CHEROKEE
...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN IOWA...
SOUTH DAKOTA...
BIG SIOUX RIVER AT AKRON
OCHEYEDAN RIVER NEAR SPENCER
LITTLE SIOUX RIVER AT SPENCER
...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN IOWA...
SOUTH DAKOTA...
BIG SIOUX RIVER AT HAWARDEN
WILLOW CREEK NEAR CROOKS
LITTLE SIOUX RIVER NEAR MILFORD
.THE FOLLOWING RIVER FORECASTS INCLUDE FORECAST PRECIPITATION THROUGH
THIS AFTERNOON. 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-SDC083-127-210600-
/O.CON.KFSD.FL.W.0006.000000T0000Z-110221T0600Z/
/HAWI4.1.SM.110219T1507Z.110219T1800Z.110220T0600Z.NO/
1047 AM CST SAT FEB 19 2011
THE FLOOD WARNING CONTINUES FOR
THE BIG SIOUX RIVER AT HAWARDEN.
* AT 09AM SATURDAY THE STAGE WAS ESTIMATED AT 15.1 FEET.
* FLOOD STAGE IS 15.0 FEET.
* AT STAGES NEAR 15.0 FEET...AGRICULTURAL FLOODING BEGINS ON THE
SOUTH DAKOTA SIDE OF THE RIVER.
$$
IAC149-SDC127-211900-
/O.EXT.KFSD.FL.W.0007.000000T0000Z-110221T1900Z/
/AKRI4.1.SM.110219T1352Z.110220T0600Z.110220T1900Z.NO/
1047 AM CST SAT FEB 19 2011
...FLOOD WARNING EXTENDED UNTIL 1 PM MONDAY...
THE FLOOD WARNING CONTINUES FOR
THE BIG SIOUX RIVER AT AKRON.
* AT 10AM SATURDAY THE STAGE WAS 16.1 FEET.
* FLOOD STAGE IS 16.0 FEET.
* RECENT ACTIVITY...THE RIVER ROSE ABOVE FLOOD STAGE ON SATURDAY
FEBRUARY 19.
* FORECAST...THE RIVER WILL CREST NEAR 16.5 FEET BY SUNDAY FEBRUARY
20. THE RIVER WILL FALL BELOW FLOOD STAGE SUNDAY FEBRUARY 20.
* AT STAGES NEAR 17.0 FEET...ABOUT 6500 ACRES OF FARM LAND ARE
FLOODED.
$$
SDC099-262046-
/O.CON.KFSD.FL.W.0002.000000T0000Z-000000T0000Z/
/WCCS2.1.SM.000000T0000Z.110218T2245Z.000000T0000Z.NO/
1047 AM CST SAT FEB 19 2011
THE FLOOD WARNING CONTINUES FOR
THE WILLOW CREEK NEAR CROOKS.
* AT 10AM SATURDAY THE STAGE WAS 9.9 FEET.
* FLOOD STAGE IS 9.0 FEET.
* AT STAGES NEAR 9.0 FEET...THE LOWER LEFT BANKS OVERFLOW FLOODING
SOME PASTURE AND HAY LAND.
$$
IAC041-210730-
/O.EXT.KFSD.FL.W.0008.000000T0000Z-110221T0730Z/
/SPOI4.1.SM.110218T2022Z.110219T1545Z.110220T0730Z.NO/
1047 AM CST SAT FEB 19 2011
...FLOOD WARNING EXTENDED UNTIL 1 AM MONDAY...
THE FLOOD WARNING CONTINUES FOR
THE OCHEYEDAN RIVER NEAR SPENCER.
* AT 09AM SATURDAY THE STAGE WAS 8.6 FEET.
* FLOOD STAGE IS 8.0 FEET.
* FORECAST...THE RIVER WILL CONTINUE TO FALL TO BELOW FLOOD STAGE BY
SUNDAY FEBRUARY 20.
* AT STAGES NEAR 8.0 FEET...MINOR FLOODING OF PASTURE LAND BEGINS.
$$
IAC041-059-262046-
/O.CON.KFSD.FL.W.0004.000000T0000Z-000000T0000Z/
/MIFI4.1.SM.000000T0000Z.110218T1400Z.000000T0000Z.NO/
1047 AM CST SAT FEB 19 2011
THE FLOOD WARNING CONTINUES FOR
THE LITTLE SIOUX RIVER NEAR MILFORD.
* AT 08AM FRIDAY THE STAGE WAS 12.6 FEET.
* FLOOD STAGE IS 12.0 FEET.
* AT STAGES NEAR 12.0 FEET...MINOR FLOODING OF LOW LYING AGRICULTURAL
LANDS BEGINS.
$$
IAC041-059-191717-
/O.CAN.KFSD.FL.W.0001.000000T0000Z-110219T1647Z/
/LSSI4.1.SM.110218T0240Z.110218T1000Z.110219T0503Z.UU/
1047 AM CST SAT FEB 19 2011
THE FLOOD WARNING IS CANCELLED FOR
THE LITTLE SIOUX RIVER ABOVE SPENCER.
* AT 10AM SATURDAY THE STAGE WAS 9.9 FEET.
* FLOOD STAGE IS 10.0 FEET.
* RECENT ACTIVITY...THE RIVER ROSE ABOVE FLOOD STAGE ON FRIDAY
FEBRUARY 18.
* AT STAGES NEAR 10.0 FEET...MINOR FLOODING OF AGRICULTURAL LANDS
BEGINS.
$$
IAC041-220000-
/O.EXT.KFSD.FL.W.0005.000000T0000Z-110222T0000Z/
/SPWI4.1.SM.110218T1108Z.110219T1800Z.110221T0000Z.NO/
1047 AM CST SAT FEB 19 2011
...FLOOD WARNING EXTENDED UNTIL 6 PM MONDAY...
THE FLOOD WARNING CONTINUES FOR
THE LITTLE SIOUX RIVER AT SPENCER.
* AT 06AM FRIDAY THE STAGE WAS 9.9 FEET.
* FLOOD STAGE IS 10.0 FEET.
* AT STAGES NEAR 10.0 FEET...THE RIGHT BANK OVERFLOWS...AND MINOR
FLOODING OF THE SPENCER CITY PARK AND SOME RURAL AGRICULTURAL AREAS
BEGINS.
$$
IAC035-191717-
/O.CAN.KFSD.FL.W.0009.000000T0000Z-110220T1100Z/
/CHKI4.1.ER.000000T0000Z.110218T2030Z.110219T1332Z.NO/
1047 AM CST SAT FEB 19 2011
THE FLOOD WARNING IS CANCELLED FOR
THE LITTLE SIOUX RIVER AT CHEROKEE.
* AT 09AM SATURDAY THE STAGE WAS 16.9 FEET.
* FLOOD STAGE IS 17.0 FEET.
* RECENT ACTIVITY...THE RIVER FELL BELOW FLOOD STAGE AT 8 AM
SATURDAY.
* FORECAST...THE RIVER WILL CONTINUE TO FALL TO 13.3 FEET BY 6 AM
SUNDAY.
$$
IAC167-191717-
/O.CAN.KFSD.FL.W.0003.000000T0000Z-110220T1513Z/
/ALTI4.1.SM.110218T1205Z.110219T0800Z.110219T1541Z.NO/
1047 AM CST SAT FEB 19 2011
THE FLOOD WARNING IS CANCELLED FOR
THE FLOYD RIVER AT ALTON.
* AT 10AM SATURDAY THE STAGE WAS 11.9 FEET.
* FLOOD STAGE IS 12.0 FEET.
* RECENT ACTIVITY...THE RIVER FELL BELOW FLOOD STAGE AT 10 AM
SATURDAY.
* FORECAST...THE RIVER WILL CONTINUE TO FALL TO 8.6 FEET BY 6 AM
SUNDAY.
* AT STAGES NEAR 12.0 FEET...FLOODING BEGINS TO AFFECT THE LOWER
LYING AGRICULTURAL LANDS ALONG THE RIVER.
$$
&&
LOCATION FLOOD LATEST OBSERVED MAXIMUM FORECAST RECENT OBSERVED
STAGE STAGE TIME STAGE TIME CREST TIME
BIG SIOUX RIVER
HAWI4 15.0 15.10 SAT 9 AM 15.1 SAT 12 PM
AKRI4 16.0 16.13 SAT 10 AM 16.5 SUN 12 AM 16.1 SAT FEB 19
SKUNK CREEK
WCCS2 9.0 9.88 SAT 10 AM M 10.9 FRI FEB 18
OCHEYEDAN RIVER
SPOI4 8.0 8.64 SAT 10 AM 8.6 SAT 12 PM 8.6 SAT FEB 19
LITTLE SIOUX RIVER
MIFI4 12.0 12.60 FRI 8 AM M 12.6 FRI FEB 18
LSSI4 10.0 9.85 SAT 10 AM M 10.6 FRI FEB 18
SPWI4 10.0 9.91 FRI 7 AM 11.3 SAT 12 PM 9.9 FRI FEB 18
CHKI4 17.0 16.85 SAT 9 AM 15.8 SAT 12 PM 18.3 FRI FEB 18
FLOYD RIVER
ALTI4 12.0 11.87 SAT 10 AM 11.5 SAT 12 PM 13.5 SAT FEB 19712
WGUS83 KFSD 201605
FLSFSD
FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1005 AM CST SUN FEB 20 2011
...THE FLOOD WARNING IS CANCELLED FOR THE FOLLOWING RIVERS IN IOWA...
SOUTH DAKOTA...
BIG SIOUX RIVER AT HAWARDEN
WILLOW CREEK NEAR CROOKS
LITTLE SIOUX RIVER NEAR MILFORD
...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN IOWA...
SOUTH DAKOTA...
BIG SIOUX RIVER AT AKRON
OCHEYEDAN RIVER NEAR SPENCER
LITTLE SIOUX RIVER AT SPENCER
.THE FOLLOWING RIVER FORECASTS INCLUDE FORECAST PRECIPITATION THROUGH
THIS AFTERNOON. 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-SDC083-127-201635-
/O.CAN.KFSD.FL.W.0006.000000T0000Z-110221T0600Z/
/HAWI4.1.SM.110219T1206Z.110219T1510Z.110220T0222Z.NO/
1005 AM CST SUN FEB 20 2011
THE FLOOD WARNING IS CANCELLED FOR
THE BIG SIOUX RIVER AT HAWARDEN.
* AT 06AM SUNDAY THE STAGE WAS ESTIMATED AT 14.9 FEET.
* FLOOD STAGE IS 15.0 FEET.
* RECENT ACTIVITY...THE RIVER ROSE ABOVE FLOOD STAGE ON SATURDAY
FEBRUARY 19. THE RIVER CRESTED NEAR 15.1 FEET AT 10 AM
SATURDAY. THE RIVER FELL BELOW FLOOD STAGE AT 8 PM SATURDAY.
* FORECAST...THE RIVER WILL CONTINUE TO FALL TO 13.9 FEET BY 6 AM
MONDAY.
* AT STAGES NEAR 15.0 FEET...AGRICULTURAL FLOODING BEGINS ON THE
SOUTH DAKOTA SIDE OF THE RIVER.
$$
IAC149-SDC127-220400-
/O.EXT.KFSD.FL.W.0007.000000T0000Z-110222T0400Z/
/AKRI4.1.SM.110219T1352Z.110220T1300Z.110221T0400Z.NO/
1005 AM CST SUN FEB 20 2011
...FLOOD WARNING EXTENDED UNTIL 10 PM MONDAY...
THE FLOOD WARNING CONTINUES FOR
THE BIG SIOUX RIVER AT AKRON.
* AT 09AM SUNDAY THE STAGE WAS 16.5 FEET.
* FLOOD STAGE IS 16.0 FEET.
* FORECAST...THE RIVER IS CRESTING NOW AND WILL FALL TO BELOW FLOOD
STAGE TONIGHT.
* AT STAGES NEAR 16.0 FEET...SEVERAL FARM LEVEES ARE OVERTOPPED WITH
SIGNIFICANT FLOODING OF AGRICULTURAL LANDS.
$$
IAC041-231200-
/O.EXT.KFSD.FL.W.0008.000000T0000Z-110223T1200Z/
/SPOI4.1.SM.110218T2022Z.110220T0415Z.110222T1200Z.NO/
1005 AM CST SUN FEB 20 2011
...FLOOD WARNING EXTENDED UNTIL 6 AM WEDNESDAY...
THE FLOOD WARNING CONTINUES FOR
THE OCHEYEDAN RIVER NEAR SPENCER.
* AT 09AM SUNDAY THE STAGE WAS 9.1 FEET.
* FLOOD STAGE IS 8.0 FEET.
* RECENT ACTIVITY...THE RIVER CRESTED AT 9.2 FEET AT 10 PM SATURDAY.
* FORECAST...THE RIVER WILL CONTINUE TO FALL TO BELOW FLOOD STAGE BY
TUESDAY FEBRUARY 22.
* AT STAGES NEAR 9.5 FEET...SIGNIFICANT AMOUNTS OF PASTURE AND OTHER
FARM LAND BEGIN FLOODING.
$$
IAC041-059-201635-
/O.CAN.KFSD.FL.W.0004.000000T0000Z-110220T1605Z/
/MIFI4.1.SM.000000T0000Z.110218T1400Z.000000T0000Z.NO/
1005 AM CST SUN FEB 20 2011
THE FLOOD WARNING IS CANCELLED FOR
THE LITTLE SIOUX RIVER NEAR MILFORD.
* AT 06AM SUNDAY THE STAGE WAS ESTIMATED AT 11.5 FEET.
* FLOOD STAGE IS 12.0 FEET.
* AT STAGES NEAR 12.0 FEET...MINOR FLOODING OF LOW LYING AGRICULTURAL
LANDS BEGINS.
$$
IAC041-240600-
/O.EXT.KFSD.FL.W.0005.000000T0000Z-110224T0600Z/
/SPWI4.1.SM.110218T1108Z.110220T1800Z.110223T0600Z.NO/
1005 AM CST SUN FEB 20 2011
...FLOOD WARNING EXTENDED UNTIL 12 AM THURSDAY...
THE FLOOD WARNING CONTINUES FOR
THE LITTLE SIOUX RIVER AT SPENCER.
* AT 06AM SUNDAY THE STAGE WAS ESTIMATED AT 10.8 FEET.
* FLOOD STAGE IS 10.0 FEET.
* FORECAST...THE RIVER WILL CREST NEAR 10.9 FEET LATER TODAY.
THE RIVER WILL FALL BELOW FLOOD STAGE WEDNESDAY FEBRUARY 23.
* AT STAGES NEAR 10.0 FEET...THE RIGHT BANK OVERFLOWS...AND MINOR
FLOODING OF THE SPENCER CITY PARK AND SOME RURAL AGRICULTURAL AREAS
BEGINS.
$$
SDC099-201635-
/O.CAN.KFSD.FL.W.0002.000000T0000Z-110220T1605Z/
/WCCS2.1.SM.000000T0000Z.110218T2245Z.110220T1001Z.NO/
1005 AM CST SUN FEB 20 2011
THE FLOOD WARNING IS CANCELLED FOR
THE WILLOW CREEK NEAR CROOKS.
* AT 09AM SUNDAY THE STAGE WAS 8.6 FEET.
* FLOOD STAGE IS 9.0 FEET.
* RECENT ACTIVITY...THE RIVER CRESTED AT 10.9 FEET AT 11 PM FRIDAY.
THE RIVER FELL BELOW FLOOD STAGE AT 6 AM SUNDAY.
* AT STAGES NEAR 9.0 FEET...THE LOWER LEFT BANKS OVERFLOW FLOODING
SOME PASTURE AND HAY LAND.
$$
&&
LOCATION FLOOD LATEST OBSERVED MAXIMUM FORECAST RECENT OBSERVED
STAGE STAGE TIME STAGE TIME CREST TIME
BIG SIOUX RIVER
HAWI4 15.0 E14.88 SUN 7 AM 15.1 SAT FEB 19
AKRI4 16.0 16.48 SUN 9 AM 16.5 SUN FEB 20
OCHEYEDAN RIVER
SPOI4 8.0 9.06 SUN 10 AM 9.2 SAT FEB 19
LITTLE SIOUX RIVER
MIFI4 12.0 E11.50 SUN 6 AM 12.6 FRI FEB 18
SPWI4 10.0 E10.81 SUN 6 AM 10.9 SUN 12 PM
SKUNK CREEK
WCCS2 9.0 8.60 SUN 10 AM 10.9 FRI FEB 18
MGWhat 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 Feb 18, 9:33 AM CST, 3 hours 58 minutes earlier.
Area forecast discussion, Feb 18, 9:33 AM CST, 3 hours 58 minutes before
AREA FORECAST DISCUSSION FOR SOUTHEAST SD/SOUTHWEST MN/NORTHWEST IA
NATIONAL WEATHER SERVICE SIOUX FALLS SD
933 AM CST FRI FEB 18 2011
.DISCUSSION...
NOT MUCH TO UPDATE WITH A RELATIVELY TAME FORECAST TODAY...TEMPS ARE
FIGHTING CAA THIS MORNING BUT HAVE SLOWLY BEGUN TO RECOVER FROM
OVERNIGHT LOWS. STILL SOME SLIGHT ENHANCEMENT TO NORTHWESTERLY WINDS
OCCURRING AHEAD OF A SURFACE RIDGE IN NORTH CENTRAL SD...BUT EXPECT
THAT THIS WILL START TO DECREASE OVER THE NEXT SEVERAL HOURS AS HIGH
PRESSURE BUILDS AND BROADENS ACROSS THE AREA. SOME THIN HIGH LEVEL
CLOUDS BEGINNING TO ADVECT INTO SOUTHWEST PORTIONS OF THE FA...BUT
SHOULD NOT LIMIT HEATING NOTICEABLY DUE TO SCATTERED NATURE. /LAFLIN
&&
.AVIATION...
VFR CIGS AND VSBYS ARE EXPECTED TO PERSIST THROUGH THE FCST PERIOD.
WINDS WILL FADE TO A LIGHT EASTERLY DIRECTION THIS AFTERNOON...
BEFORE INCREASING FROM THE ESE AHEAD OF AN APPROACHING SYSTEM ON
SATURDAY AFTERNOON. /LAFLIN
&&
.PREV DISCUSSION...
STRONG UPR LOW PUSHING INTO NRN GRTLKS EARLY THIS MORNING...WITH
RIDGING DEVELOPING ACRS THE NRN PLAINS. FLOW REMAINS SPLIT IN W WITH
IMPRESSIVE DYNAMIC UPR SYSTEM MOVING THRU CA WITH PROLIFIC PCPN.
THIS SYSTEM AS IT MOVES INTO THE NRN PLAINS LTR SAT NIGHT AND SUNDAY
PROVIDES THE GREATEST FCST CHALLENGE...AND MOST OF THE FOCUS ON THIS
FCST CYCLE.
SOME BRISK WINDS CONTINUE AHEAD OF LOW LVL RIDGE AXIS BUILDING INTO
WRN CWA...AND WL LKLY STAY UP A BIT THRU THE MORNING AT LEAST ACRS
HIER SW MN INTO NW IA AREAS. COLDEST OF THE AIRMASS IS SOMEWHAT
RESTRICTED IN SWRD PUSH BY WLY COMPONENT...BUT CONTINUED SHALLOW CAA
LKLY TO NOT ALLOW MUCH OF A TEMP RISE TDA ACRS AREAS WITH REMAINING
GREATER SNOWCOVER. HOWEVER...THE MO VLY...WHILE LKLY TO HAVE MUCH
LIGHTER WINDS...SHUD BE ABLE TO USE SUNSHINE AHEAD OF ADVANCING CI
SHIELD TO MIX INTO THE LOWER 40S TDA. WL SEE OVERALL INCREASE IN
CLDS TONIGHT...BUT ROOM WITH SFC RIDGE NOSING THRU ERN CWA TONIGHT
FOR LOWS TO DROP A BIT LOWER THAN GUIDANCE...AND EXPECT A NON
DIURNAL TREND TO TMPS ACRS SCNTRL AS WAA INCREASES.
ON SAT...RETURN OF WARMER AIR...AT LEAST IN A VERY TEMPORARY SENSE
WITH WK WAVE TOPPING RIDGE THRU ND AND MOVING THRU MN. WL HELP TO
SET UP INVERTED TROUGH FROM SW TO NE THRU CWA. CONDITIONS BEHIND THE
TROUGH WL FEATURE DECENT SHALLOW COOLING WHICH WL FILTER INTO
HON/9V9 AREAS DURING THE DAY...AND PERHAPS ENOUGH POST FRONTAL
MOISTURE TO MAKE A CHC MENTION FOR SOME DZ/FZDZ INTO THE EVENING.
TMPS AHEAD OF BNDRY WL BE QUITE MILD...AND MAY ECLIPSE 50 DEGREES
THRU LOWER MO VLY.
ATTENTION THEN TURNS TO THE MAJOR WINTER SYSTEM EXPECTED TO TRAVERSE
THE AREA FROM LATER SATURDAY NIGHT THRU EARLY MON. TREND IN MODELS
IS STRONGLY NWRD FROM PREVIOUS DAYS...AND THIS NOT ONLY WL REDUCE
EXPECTED SNOWFALL AMOUNTS THRU SERN HALF OF AREA...BUT ALSO WL
GREATLY INCREASE THE POTENTIAL IMPACT OF FREEZING PCPN OVER A
HEAVILY TRAVELED I90 CORRIDOR.
PCPN MAY BEGIN TO DEVELOP AS EARLY AS SAT EVENING THRU FAR SWRN CWA
NR INVERTED TROUGH...AND SERN CWA WITHIN WAA AND NR WK ENTRANCE
REGION OF JET THRU SRN GREAT LAKES. WITH WARMER TMPS ALFT...MUCH OF
THE EARLY PCPN WL BE LIQUID...BUT WL BEGIN TO INTERACT WITH SHALLOW
COOLER AIR TO THE NORTH FOR INCREASING FREEZING RAIN THREAT TOWARD
THE I90 CORRIDOR...AND SNOW TO THE NORTH AND WEST AS EVAP COOLING IN
DEEPER LAYER. TEMPS THRU SERN 1/3 OR SO OF CWA WL PROBABLY REMAIN AT
OR ABOVE FREEZING GIVEN WARMER READINGS ALFT AND LACK OF A
SIGNIFICANT DRY TRAJECTORY S OF INVERTED TROUGH. GENERALLY TRACKED
PCPN ALONG WITH STRONG FRONTOGENETIC AXIS LIFTING NWRD AHEAD OF MID
LVL WAVE WHICH SHUD PASS THRU NWRN CWA SUN AFTN. LITTLE PV PULSE
PUSHES ALG BNDRY DURING SUN MORNING...AND EXPECT COVERAGE OF PRECIP
TO MAXIMIZE ON SUNDAY MORNING INTO EARLY AFTN. DRY SLOT LIFTING NWRD
SHUD ALLOW PCPN TO TAPER OFF FROM THE SOUTH BY MIDDAY...BUT MID LVL
THERMAL RIBBON WL KEEP PCPN GOING THRU WRN/NRN CWA AS WAVE RIPPLES
PAST. POTENTIAL THAT PCPN WHEN DROPS OFF THRU SERN CWA COULD GO OVER
TO DZ TYPE FOR A WHILE WITH MOISTURE PROFILES SHALLOWING OUT.
DEVELOPMENT OF SFC LOW FROM ERN NEBRASKA THRU IA SUN AFTN WL START
TO DRAW COOLER AIR INTO THE MIX AND WL SEE MESSY TRANSITION ZONE
WORK SEWRD THRU THE AFTN. EVEN ENOUGH INSTABILITY INDICATED ON NOSE
OF DRYING ALFT THAT COULD GET THUNDER INTO SERN CWA LATER SAT NIGHT
AND SUNDAY MORNING...AND INTERESTING TO NOTE THE SPC DAY 2 5 PERCENT
SVR UP TO THE SIOUX CITY AREA.
AT THIS TIME...LOOKING FOR WINTRY MESS TO RESULT IN SOME 6-10 INCH
SNOW AMOUNTS THRU NRN CWA...WITH AMOUNTS TAPERING OFF RAPIDLY TO THE
SOUTH WHERE ICE ACCUMULATIONS ARND A QUARTER INCH COULD OCCUR NEAR
THE I90 CORRIDOR. WITH SNOW AMOUNTS NORTH...THE ICE ACCUMULATIONS
SOUTH AND THE COMBINATION BETWEEN...WENT AHEAD AND ISSUED WINTER
STORM WATCH FOR AREAS GENERALLY NORTH OF A JACKSON TO BERESFORD TO
YANKTON LINE. SHOULD MAKE MENTION THAT SREF THERMAL PROFILES ARE ALL
ACROSS THE BOARD...SO FOR THIS FCST WENT TOWARD MAJORITY OPINION.
06Z RUNS HAVE NOW TRENDED MUCH COLDER AND SOUTH...BUT WATCH WOULD
REMAIN VALID FOR GREATER HEAVIER SNOW IMPACT RATHER THAN FREEZING
RAIN.
SOME LINGERING PCPN MONDAY AS SYSTEM SHEARS OUT. /CHAPMAN
&&
.FSD WATCHES/WARNINGS/ADVISORIES...
IA...WINTER STORM WATCH FROM LATE SATURDAY NIGHT THROUGH SUNDAY
EVENING FOR IAZ001-002.
MN...WINTER STORM WATCH FROM LATE SATURDAY NIGHT THROUGH SUNDAY
EVENING FOR MNZ071-072-080-081-089-090-097-098.
NE...NONE.
SD...WINTER STORM WATCH FROM LATE SATURDAY NIGHT THROUGH SUNDAY
EVENING FOR SDZ038>040-050-052>069.
&&Hazardous weather outlook, Feb 18, 5:10 AM CST, 8 hours 21 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SIOUX FALLS SD 0510 AM CST FRI FEB 18 2011 SDZ038>040-050-052>071-MNZ071-072-080-081-089-090-097-098- IAZ001>003-012>014-020>022-031-032-NEZ013-014-191200- 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- 0510 AM CST FRI FEB 18 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST SOUTH DAKOTA... SOUTHWEST MINNESOTA...NORTHWEST IOWA...AND NORTHEAST NEBRASKA. .DAY ONE...TODAY AND TONIGHT FLOODING... MINOR LOWLAND RIVER FLOODING DUE TO SNOWMELT WILL CONTINUE TODAY ON THE LITTLE SIOUX RIVER NEAR SPENCER...AS WELL AS WILLOW CREEK NEAR CROOKS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY A SIGNIFICANT WINTER STORM APPEARS HEADED FOR THE AREA THE LATTER HALF OF THE WEEKEND. PRECIPITATION WILL SPREAD NORTHWARD ON SATURDAY NIGHT...BECOMING WIDESPREAD AND MORE INTENSE LATE SATURDAY NIGHT AND SUNDAY THROUGH LOCATIONS ALONG AND NORTH OF INTERSTATE 90. SIX TO TEN INCHES OF SNOWFALL WILL BE POSSIBLE BY MONDAY MORNING NORTH OF A LINE FROM CHAMBERLAIN TO MARSHALL...WITH RAPIDLY LESSER AMOUNTS TOWARD THE SOUTHEAST. HOWEVER...THERE WILL BE AN INCREASING THREAT FOR ICE ACCUMULATIONS HEADING TOWARD AREAS ALONG THE INTERSTATE 90 CORRIDOR FROM AROUND SIOUX FALLS EASTWARD...WHERE ICE ACCUMULATIONS TO AROUND A QUARTER INCH WILL BE POSSIBLE BY SUNDAY AFTERNOON. IT SHOULD BE NOTED THAT A SMALL CHANGE IN STORM TRACK WOULD NOT ONLY CHANGE WHERE HEAVIEST PRECIPITATION IS EXPECTED...BUT ALSO TYPE OF PRECIPITATION WOULD FALL. AREAS OF LIGHT SNOWFALL WILL CONTINUE INTO MONDAY...WITH ADDITIONAL ACCUMULATIONS GENERALLY AN INCH OR LESS. .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.
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 18, 2:02 AM CST | River Flood Warning | FSD | Clay, Dickinson | 33 hr |
| Feb 18, 4:18 AM CST | Winter Storm Watch | FSD | Clay, Dickinson, Lyon, O'Brien, Osceola, Sioux | 35 hr |
| Feb 18, 8:58 AM CST | River Flood Warning | FSD | Sioux | 26 hr |
| Feb 18, 8:58 AM CST | River Flood Warning | FSD | Clay, Dickinson | 49 hr |
| Feb 18, 8:58 AM CST | River Flood Warning | FSD | Clay | 6 days |
| Feb 18, 9:26 AM CST | Areal Flood Warning | FSD | Buena Vista | 12 hr |
| Feb 18, 1:31 PM CST | River Flood Warning | FSD | Plymouth | 4 days |
| Feb 18, 1:31 PM CST | River Flood Warning | FSD | Clay | 4 days |
| Feb 18, 3:38 PM CST | River Flood Warning | FSD | Cherokee | 19 hr |
| Feb 18, 8:58 AM CST | River Flood Warning | FSD | Minnehaha | 49 hr |
Nearby
River Flood Warnings in South Dakota, 2011River Flood Warnings in Iowa, 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.