Flash Flood Warning 7, NWS Sioux Falls, SD

Issued

Jun 5, 2008, 12:39 PM CDT (17:39 UTC)

Expired

Jun 5, 2008, 3:45 PM CDT

In force

3 hr

Issued by

NWS Sioux Falls, SD

Area

Storm-based polygon

Flood severity

None

Counties Cherokee County, IA, Clay County, IA, Dickinson County, IA, Lyon County, IA, O'Brien County, IA, Osceola County, IA, Plymouth County, IA, Sioux County, IA, Woodbury County, IA

The Sioux Falls radar (KFSD), 95 km from the middle of the area, began a volume at 17:39 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.

000 
WGUS53 KFSD 051742
FFWFSD
IAC035-041-059-119-141-143-149-167-193-052045-
/O.NEW.KFSD.FF.W.0007.080605T1739Z-080605T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1241 PM CDT THU JUN 5 2008

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WESTERN CHEROKEE COUNTY IN NORTHWEST IOWA
  NORTHWESTERN CLAY COUNTY IN NORTHWEST IOWA
  WESTERN DICKINSON COUNTY IN NORTHWEST IOWA
  EXTREME SOUTHEASTERN LYON COUNTY IN NORTHWEST IOWA
  OBRIEN COUNTY IN NORTHWEST IOWA
  OSCEOLA COUNTY IN NORTHWEST IOWA
  PLYMOUTH COUNTY IN NORTHWEST IOWA
  EASTERN SIOUX COUNTY IN NORTHWEST IOWA
  NORTHERN WOODBURY COUNTY IN NORTHWEST IOWA

* UNTIL 345 PM CDT

* AT 1236 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR 
  INDICATED HEAVY RAIN CAPABLE OF PRODUCING FLASH FLOODING FROM A 
  THUNDERSTORM NEAR LAWTON...OR 11 MILES EAST OF SIOUX CITY...MOVING
  NORTHEAST AT 45 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  PIERSON...KINGSLEY...MERRILL...LE MARS...REMSEN...STRUBLE...
  MARCUS...MAURICE...CLEGHORN...ALTON...ORANGE CITY...LARRABEE...
  GRANVILLE...PAULLINA...HOSPERS...SUTHERLAND...ARCHER...PRIMGHAR...
  SHELDON...MATLOCK...SANBORN...HARTLEY...ASHTON...MELVIN...SIBLEY...
  OCHEYEDAN...HARRIS...WAHPETON AND LAKE PARK

INTENSE RAINFALL RATES OF 2 TO 3 INCHES PER HOUR WILL OCCUR WITH 
THIS STRONG THUNDERSTORM...WITH RAINFALL AMOUNTS OF 1 TO 2 INCHES 
FALLING IN 30 TO 45 MINUTES. RUNOFF FROM THIS INTENSE RAINFALL WILL 
LEAD TO RAPID RISES ON AREA CREEKS AND STREAMS...AND FLOOD ROADS AND 
INTERSECTIONS IN ANY URBAN AREAS.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

LAT...LON 4294 9627 4349 9567 4348 9509 4233 9593
      4254 9647
TIME...MOT...LOC 1739Z 204DEG 47KT 4258 9616

$$

MG

000 
WGUS73 KFSD 051847
FFSFSD

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
145 PM CDT THU JUN 5 2008

IAC035-041-059-119-141-143-149-167-193-052045-
/O.CON.KFSD.FF.W.0007.000000T0000Z-080605T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DICKINSON IA-OSCEOLA IA-LYON IA-SIOUX IA-OBRIEN IA-CLAY IA-
CHEROKEE IA-PLYMOUTH IA-WOODBURY IA-
145 PM CDT THU JUN 5 2008

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 345 PM CDT FOR
NORTHERN WOODBURY...PLYMOUTH...WESTERN CHEROKEE...NORTHWESTERN
CLAY...OBRIEN...EASTERN SIOUX...EXTREME SOUTHEASTERN LYON...OSCEOLA
AND WESTERN DICKINSON COUNTIES...

AT 145 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A THUNDERSTORM WITH HEAVY RAIN CAPABLE OF PRODUCING FLASH 
FLOODING. THIS STORM WAS LOCATED NEAR OCHEYEDAN...MOVING NORTH AT 45 
MPH. THIS STORM WILL BE MOVING OUT OF THE WARNED AREA SHORTLY...BUT 
ADDITIONAL THUNDERSTORM DEVELOPMENT IS EXPECTED TO CONTINUE THROUGH 
THE AFTERNOON. ANY HEAVY RAINS OUT OF THESE LATER STORMS COULD ALSO 
LEAD TO FLASH FLOODING DUE TO RAPID RUNOFF OVER THE SATURATED SOILS.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM CDT THURSDAY EVENING
FOR NORTHWEST IOWA AND NORTHEAST NEBRASKA AND SOUTHEAST SOUTH DAKOTA.

A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 700 PM CDT
THURSDAY EVENING FOR SOUTHWEST MINNESOTA AND SOUTHEASTERN SOUTH
DAKOTA.

LAT...LON 4294 9627 4349 9567 4348 9509 4233 9593
      4254 9647
TIME...MOT...LOC 1845Z 201DEG 42KT 4343 9558

$$

MG

000 
WGUS73 KFSD 052045
FFSFSD

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
345 PM CDT THU JUN 5 2008

IAC035-041-059-119-141-143-149-167-193-052055-
/O.EXP.KFSD.FF.W.0007.000000T0000Z-080605T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DICKINSON IA-OSCEOLA IA-LYON IA-SIOUX IA-OBRIEN IA-CLAY IA-
CHEROKEE IA-PLYMOUTH IA-WOODBURY IA-
345 PM CDT THU JUN 5 2008

...THE FLASH FLOOD WARNING HAS EXPIRED FOR NORTHERN WOODBURY...
PLYMOUTH...WESTERN CHEROKEE...NORTHWESTERN CLAY...OBRIEN...EASTERN
SIOUX...EXTREME SOUTHEASTERN LYON...OSCEOLA AND WESTERN DICKINSON
COUNTIES...

SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE TO MOVE THROUGH 
THE AREA THROUGH THIS AFTERNOON...BUT ADDITIONAL RAINFALL TOTALS 
THROUGH 6 PM WILL BE ONE QUARTER OF AN INCH OR LESS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM CDT THURSDAY EVENING
FOR NORTHWEST IOWA AND NORTHEAST NEBRASKA AND SOUTHEAST SOUTH DAKOTA.

A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 700 PM CDT
THURSDAY EVENING FOR SOUTHWEST MINNESOTA AND SOUTHEASTERN SOUTH
DAKOTA.

LAT...LON 4294 9627 4349 9567 4348 9509 4233 9593
      4254 9647
TIME...MOT...LOC 2045Z 201DEG 42KT 4474 9488

$$

MG

Flash Flood Warnings in Iowa, 2008Every flash flood warning in 2008

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.