Alert archive / South Dakota / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 166, NWS Sioux Falls, SD

July 4, 2003Jerauld County, South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 4, 2003, 8:31 PM CDT for Jerauld County, South Dakota. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 4, 2003, 8:31 PM CDT (01:31 UTC)
Expired
Jul 4, 2003, 9:15 PM CDT
In force
44 min
Issued by
NWS Sioux Falls, SD
Area
Counties, with a storm outline in the text

County Jerauld County, SD

The radar

The Aberdeen radar (KABR), 153 km from the middle of the area, began a volume at 01:35 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jul 4, 7:20 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 1.5 hours before the alert went out and 92 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 00:00Z on 2003-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 333 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 00:00Z on 2003-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -10 square meters per square second.1939587897117Sfc1 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
333 J/kg
Mixed-layer CIN
-58 J/kg
Mixed-layer LCL
2027 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
-10 m²/s²
0-3 km storm-relative helicity
33 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

969 
WUUS53 KFSD 050131
SVRFSD
SDC073-050215-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
830 PM CDT FRI JUL 4 2003

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  JERAULD COUNTY IN EAST CENTRAL SOUTH DAKOTA

* UNTIL 915 PM CDT

* AT 832 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS WITH WIND GUSTS TO 60 MPH...FROM 6
  MILES NORTH OF WESSINGTON SPRINGS TO 11 MILES SOUTH OF WESSINGTON
  SPRINGS...MOVING EAST AT 20 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
RURAL JERAULD COUNTY THROUGH 850 PM CDT

THIS STORM WILL PRODUCE LARGE HAIL AND DAMAGING WIND. GO INSIDE A
STURDY BUILDING AND STAY AWAY FROM WINDOWS.

LAT...LON 4412 9868 4395 9874 4395 9836 4418 9839
          4417 9864

$$

BOUSTEAD

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 4, 7:56 PM CDTSevere Thunderstorm WarningFSDAurora34 min
Jul 4, 7:59 PM CDTSevere Thunderstorm WarningFSDJerauld31 min
Jul 4, 8:24 PM CDTSevere Thunderstorm WarningFSDGregory66 min
Jul 4, 8:30 PM CDTSevere Thunderstorm WarningFSDAurora30 min
Jul 4, 8:42 PM CDTSevere Thunderstorm WarningFSDSanborn48 min
Jul 4, 8:51 PM CDTSevere Thunderstorm WarningFSDDavison24 min
Jul 4, 8:58 PM CDTSevere Thunderstorm WarningFSDAurora32 min
Jul 4, 9:15 PM CDTSevere Thunderstorm WarningFSDDavison30 min
Jul 4, 9:26 PM CDTSevere Thunderstorm WarningFSDSanborn34 min
Jul 4, 9:30 PM CDTSevere Thunderstorm WarningFSDHanson45 min
Jul 4, 9:46 PM CDTSevere Thunderstorm WarningFSDMcCook44 min
Jul 4, 9:48 PM CDTTornado WarningFSDCharles Mix27 min
Jul 4, 9:53 PM CDTSevere Thunderstorm WarningFSDUnion37 min
Jul 4, 10:16 PM CDTSevere Thunderstorm WarningFSDMinnehaha44 min
Jul 4, 10:29 PM CDTSevere Thunderstorm WarningFSDMcCook31 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2003Every severe thunderstorm warning in 2003

Sources

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.