Alert archive / South Dakota / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 387, NWS Sioux Falls, SD

October 1, 2002Lincoln County, Turner County, South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Oct 1, 2002, 1:59 PM CDT for Lincoln County, Turner County, South Dakota. It was in force for 41 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: Oct 1, 2002, 1:59 PM CDT (18:59 UTC)
Expired: Oct 1, 2002, 2:40 PM CDT
In force: 41 min
Issued by: NWS Sioux Falls, SD
Area: Counties, with a storm outline in the text

Counties Lincoln County, SD, Turner County, SD

What was reported inside it

Time	Report	Where	Remark
Oct 1, 2:03 PM CDT	Hail 0.88	Davis, SD
Oct 1, 2:11 PM CDT	Hail 0.75	Lennox, SD

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 7.0 hours before the alert went out and 207 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2123 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: -190 m²/s²
0-3 km storm-relative helicity: 74 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.

234 
WUUS53 KFSD 011859
SVRFSD
SDC083-125-011940-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
158 PM CDT TUE OCT 1 2002

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LINCOLN COUNTY IN SOUTHEAST SOUTH DAKOTA
  EASTERN TURNER COUNTY IN SOUTHEAST SOUTH DAKOTA

* UNTIL 240 PM CDT

* AT 158 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER HURLEY...OR ABOUT 7 MILES SOUTHEAST OF
  PARKER...MOVING NORTHEAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CHANCELLOR AROUND 210 PM CDT
  LENNOX AROUND 220 PM CDT
  TEA...WORTHING AROUND 230 PM CDT

THIS STORM HAS A HISTORY OF PRODUCING HAIL TO THE SIZE OF GOLFBALL. 

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

LAT...LON 4349 9718 4309 9713 4310 9667 4351 9683

BOUSTEAD

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 1, 1:04 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Yankton	36 min
Oct 1, 1:24 PM CDT	Severe Thunderstorm Warning	FSD	Turner	36 min
Oct 1, 1:31 PM CDT	Severe Thunderstorm Warning	FSD	Yankton	29 min
Oct 1, 2:32 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha	28 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2002 Every severe thunderstorm warning in 2002

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.