Alert archive / South Dakota / Tornado Warnings in 2003

Tornado Warning 5, NWS Sioux Falls, SD

June 11, 2003Brule County, South Dakota

NWS Sioux Falls, SD issued this tornado warning at Jun 11, 2003, 9:10 PM CDT for Brule County, South Dakota. It was in force for 35 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: Jun 11, 2003, 9:10 PM CDT (02:10 UTC)
Expired: Jun 11, 2003, 9:45 PM CDT
In force: 35 min
Issued by: NWS Sioux Falls, SD
Area: Counties, with a storm outline in the text

County Brule County, SD

The radar

The Sioux Falls radar (KFSD), 204 km from the middle of the area, began a volume at 02:11 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.

Issued	Product	Office	Lasted
Jun 11, 6:45 PM CDT	Tornado Watch	SPC	4 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 2.2 hours before the alert went out and 148 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 69 J/kg
Mixed-layer CIN: -101 J/kg
Mixed-layer LCL: 1547 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 177 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KFSD 120210
TORFSD
SDC015-120245-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
910 PM CDT WED JUN 11 2003

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN BRULE COUNTY IN SOUTH CENTRAL SOUTH DAKOTA

* UNTIL 945 PM CDT

* AT 910 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADIC THUNDERSTORM 7 MILES WEST OF CHAMBERLAIN...MOVING
  SOUTHEAST AT 20 MPH.

* SOME LOCATIONS AFFECTED...
  CHAMBERLAIN AROUND 925 PM CDT
  PUKWANA AROUND 940 PM CDT

THIS REPLACES THE PREVIOUSLY ISSUED SEVERE THUNDERSTORM WARNING. 

TAKE COVER NOW. TORNADOES AT NIGHT ARE EXTREMELY DANGEROUS. DO NOT
WAIT UNTIL YOU SEE OR HEAR THE TORNADO. IT MAY BE TOO LATE.

TAKE COVER NOW. THIS TORNADO IS WRAPPED IN RAIN. IF YOU WAIT TO SEE
OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.

LAT...LON 4390 9929 4373 9940 4366 9938 4351 9928
          4351 9908 4383 9905

$$

BOUSTEAD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 9:00 PM CDT	Severe Thunderstorm Warning	FSD	Brule	30 min
Jun 11, 9:40 PM CDT	Severe Thunderstorm Warning	FSD	Gregory	50 min
Jun 11, 9:46 PM CDT	Severe Thunderstorm Warning	FSD	Brule	44 min
Jun 11, 10:48 PM CDT	Severe Thunderstorm Warning	FSD	Brule	27 min

Nearby

Tornado Warnings in South Dakota, 2003 Every tornado warning in 2003 Tornadoes 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.