Flash Flood Warning 6, NWS Sioux Falls, SD

Issued

May 5, 2007, 1:55 PM CDT (18:55 UTC)

Expired

May 5, 2007, 5:00 PM CDT

In force

3 hr

Issued by

NWS Sioux Falls, SD

Area

Whole counties

Counties Bon Homme County, SD, Hutchinson County, SD, Yankton County, SD

The Sioux Falls radar (KFSD), 93 km from the middle of the area, began a volume at 18:59 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.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

000 
WGUS53 KFSD 051857
FFWFSD
SDC009-067-135-052200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
155 PM CDT SAT MAY 5 2007

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BON HOMME COUNTY IN SOUTHEAST SOUTH DAKOTA
  HUTCHINSON COUNTY IN SOUTHEAST SOUTH DAKOTA
  WESTERN YANKTON COUNTY IN SOUTHEAST SOUTH DAKOTA

* UNTIL 500 PM CDT

* AT 150 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  CONTINUED DEVELOPMENT OF THUNDERSTORMS PRODUCING HEAVY RAINFALL.
  WATER WAS REPORTED PONDING ON CITY STREETS IN FREEMAN SHORTLY
  AFTER 130 PM...AND RADAR INDICATED THAT AN ADDITIONAL 1 TO 3
  INCHES RAINFALL IS LIKELY THROUGH 500 PM FOR MOST AREAS. COMBINED
  WITH RAINFALL FROM LAST NIGHT AND THIS MORNING...THIS WILL PRODUCE 
  FLASH FLOODING OF SMALL STREAMS...URBAN AREAS...AND POOR DRAINAGE
  RURAL AREAS.    

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO UTICA...
  TYNDALL...TRIPP...SCOTLAND...PARKSTON...MENNO...FREEMAN...DIMOCK...
  CLAYTON AND AVON

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.

LAT...LON 4282 9813 4277 9795 4287 9788 4288 9738
      4317 9740 4350 9741 4349 9808

$$

CHAPMAN

000 
WGUS73 KFSD 052035
FFSFSD

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
331 PM CDT SAT MAY 5 2007

SDC009-067-135-052200-
HUTCHINSON SD-YANKTON SD-BON HOMME SD-
331 PM CDT SAT MAY 5 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR BON
HOMME...WESTERN YANKTON AND HUTCHINSON COUNTIES...

AT 328 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE THUNDERSTORM DEVELOPMENT OVER NEBRASKA...WHICH WILL MOVE 
INTO THE FLASH FLOOD WARNING AREA OVER THE NEXT COUPLE OF HOURS. 
THESE STORMS MAY ALSO BE SEVERE AND COULD POTENTIALLY PRODUCE 
TORNADOES. THESE STORMS WILL BE CAPABLE OF PRODUCING AN INCH TO AN 
INCH AND A HALF OF RAIN AN HOUR.

AT 330 PM CDT...LAW ENFORCEMENT REPORTED THAT THE INTERSECTION OF 
412TH AVENUE AND U.S. HIGHWAY 18 HAS BEEN WASHED OUT. THIS IS ABOUT 
ONE MILE NORTH OF TRIPP.

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM CDT SATURDAY EVENING
FOR NORTHWEST IOWA.

LAT...LON 4282 9813 4277 9795 4287 9788 4288 9738
      4317 9740 4350 9741 4349 9808

$$

08

Flash Flood Warnings in South Dakota, 2007Every flash flood warning in 2007

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