Alert archive / South Dakota / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 147, NWS Sioux Falls, SD

July 3, 2003Yankton County, South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 3, 2003, 10:21 PM CDT for Yankton County, South Dakota. It was in force for 39 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 3, 2003, 10:21 PM CDT (03:21 UTC)
Expired: Jul 3, 2003, 11:00 PM CDT
In force: 39 min
Issued by: NWS Sioux Falls, SD
Area: Counties, with a storm outline in the text

County Yankton County, SD

The radar

The Sioux Falls radar (KFSD), 89 km from the middle of the area, began a volume at 03:23 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
Jul 3, 9:40 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 3.4 hours before the alert went out and 197 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: 3738 J/kg
Mixed-layer CIN: -127 J/kg
Mixed-layer LCL: 1807 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 72 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KFSD 040321
SVRFSD
SDC135-040400-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1021 PM CDT THU JUL 3 2003

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  YANKTON COUNTY IN SOUTHEAST SOUTH DAKOTA

* UNTIL 1100 PM CDT

* AT 1021 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 7 MILES SOUTHEAST OF MISSION HILL
  TO 12 MILES NORTHWEST OF YANKTON...OR FROM 11 MILES EAST OF YANKTON
  TO 12 MILES NORTHWEST OF YANKTON...MOVING NORTH AT 20 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
RURAL YANKTON COUNTY THROUGH 1040 PM CDT

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

LAT...LON 4281 9720 4287 9724 4285 9745 4290 9763
          4316 9762 4315 9719

$$

BOUSTEAD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 3, 9:54 PM CDT	Severe Thunderstorm Warning	FSD	Douglas	36 min
Jul 3, 10:16 PM CDT	Severe Thunderstorm Warning	FSD	Davison, Hutchinson	44 min
Jul 3, 10:25 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Union	35 min
Jul 3, 10:40 PM CDT	Severe Thunderstorm Warning	FSD	Hanson	35 min
Jul 3, 10:46 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Turner	44 min
Jul 3, 10:55 PM CDT	Severe Thunderstorm Warning	FSD	McCook	35 min
Jul 3, 11:08 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha	67 min
Jul 3, 11:45 PM CDT	Severe Thunderstorm Warning	FSD	Moody	45 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2003 Every 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.