Alert archive / South Dakota / Flash Flood Warnings in 2004

Flash Flood Warning 25, NWS Sioux Falls, SD

August 3, 2004Lincoln County, Minnehaha County, South Dakota; Rock County, Minnesota

NWS Sioux Falls, SD issued this flash flood warning at Aug 3, 2004, 11:28 AM CDT for Lincoln County, Minnehaha County, South Dakota; Rock County, Minnesota. It was in force for 92 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 3, 2004, 11:28 AM CDT (16:28 UTC)
Expired
Aug 3, 2004, 1:00 PM CDT
In force
92 min
Issued by
NWS Sioux Falls, SD
Area
Counties, with a storm outline in the text

Counties Rock County, MN, Lincoln County, SD, Minnehaha County, SD

The radar

The Sioux Falls radar (KFSD), 12 km from the middle of the area, began a volume at 16:32 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.

What was reported inside it

TimeReportWhereRemark
Aug 3, 12:04 PM CDTFLASH FLOODBaltic, SDLOW LAND FLOODING AROUND BALTIC SD
Aug 3, 12:04 PM CDTFLASH FLOODBaltic, SDLOW LAND FLOODING AROUND BALTIC SD

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

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 4.5 hours before the alert went out and 187 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Aberdeen, SD at 12:00Z on 2004-08-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 197 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 12:00Z on 2004-08-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 43 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
197 J/kg
Mixed-layer CIN
-333 J/kg
Mixed-layer LCL
811 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
43 m²/s²
0-3 km storm-relative helicity
119 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS53 KFSD 031630
FFWFSD
MNC133-SDC083-099-031800-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1128 AM CDT TUE AUG 3 2004

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN LINCOLN COUNTY IN SOUTHEAST SOUTH DAKOTA
  MINNEHAHA COUNTY IN SOUTHEAST SOUTH DAKOTA
  WESTERN ROCK COUNTY IN SOUTHWEST MINNESOTA

* UNTIL 100 PM CDT

* AT 1127 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
URBAN FLOODING POSSIBLE FROM TUNDERSTORM OVER MINNEHAHA AND NORTHERN 
LINCOLN COUNTUES IN SOUTH DAKOTA AND ROCK COUNTY IN MINNESOTA. 

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

LAT...LON 4382 9712 4340 9691 4354 9632 4384 9644

$$

WB
1 follow-up statement
000 
WGUS73 KFSD 031726
FFSFSD
MNC133-SDC083-099-031745-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1222 PM CDT TUE AUG 3 2004

...FLASH FLOOD WARNING CANCELLED FOR...

...WESTERN ROCK COUNTY IN SOUTHWEST MINNESOTA...
...MINNEHAHA COUNTY IN SOUTHEAST SOUTH DAKOTA...
...NORTHERN LINCOLN COUNTY IN SOUTHEAST SOUTH DAKOTA...

....THUNDERSTORMS THAT PRODUCE THE HEAVY RAIN OVER THE AREA HAVE 
MOVED TO THE EAST...AND THE RAINFALL HAS DECREASED RAPIDLY. STANDING
WATER WILL BE DRAINING AWAY SLOWLY BUT NO ADDITIONAL HEAVY RAIN
IS EXPECTED. 

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE 
ROADWAY. 

LAT...LON 4382 9625 4344 9667 4344 9688 4381 9705

$$

WB

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 2, 8:08 PM CDTSevere Thunderstorm WarningFSDBrule37 min
Aug 2, 8:11 PM CDTSevere Thunderstorm WarningFSDAurora, Jerauld34 min
Aug 2, 8:45 PM CDTSevere Thunderstorm WarningFSDAurora, Brule45 min
Aug 2, 9:39 PM CDTSevere Thunderstorm WarningFSDAurora, Douglas36 min
Aug 3, 8:02 AM CDTSevere Thunderstorm WarningFSDBrule28 min
Aug 3, 8:28 AM CDTSevere Thunderstorm WarningFSDBrule, Jerauld32 min
Aug 3, 8:59 AM CDTSevere Thunderstorm WarningFSDAurora31 min
Aug 3, 9:11 AM CDTSevere Thunderstorm WarningFSDJerauld, Sanborn34 min
Aug 3, 9:33 AM CDTSevere Thunderstorm WarningFSDDavison27 min
Aug 3, 9:45 AM CDTSevere Thunderstorm WarningFSDMiner, Sanborn45 min
Aug 3, 9:59 AM CDTSevere Thunderstorm WarningFSDDavison, Hanson46 min
Aug 3, 10:15 AM CDTSevere Thunderstorm WarningFSDMcCook30 min
Aug 3, 10:30 AM CDTSevere Thunderstorm WarningFSDLake, Miner30 min
Aug 3, 10:37 AM CDTSevere Thunderstorm WarningFSDLincoln, Minnehaha, Turner38 min
Aug 3, 10:44 AM CDTSevere Thunderstorm WarningFSDMcCook31 min
Aug 3, 11:01 AM CDTSevere Thunderstorm WarningFSDLake29 min
Aug 3, 11:12 AM CDTSevere Thunderstorm WarningFSDMinnehaha33 min
Aug 3, 11:40 AM CDTSevere Thunderstorm WarningFSDMoody35 min
Aug 3, 11:42 AM CDTSevere Thunderstorm WarningFSDMinnehaha63 min
Aug 3, 12:12 PM CDTSevere Thunderstorm WarningFSDNobles48 min
Aug 3, 12:46 PM CDTSevere Thunderstorm WarningFSDJackson44 min
Aug 3, 12:57 PM CDTSevere Thunderstorm WarningFSDNobles18 min
Aug 3, 1:25 PM CDTSevere Thunderstorm WarningFSDJackson20 min
Aug 3, 1:45 PM CDTSevere Thunderstorm WarningFSDJackson30 min

Nearby

Flash Flood Warnings in South Dakota, 2004Flash Flood Warnings in Minnesota, 2004Every flash flood warning in 2004

Sources

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.