Alert archive / South Dakota / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 194, NWS Sioux Falls, SD

August 6, 2000Lincoln County, Minnehaha County, Turner County, South Dakota; Lyon County, Iowa

NWS Sioux Falls, SD issued this severe thunderstorm warning at Aug 6, 2000, 1:46 AM CDT for Lincoln County, Minnehaha County, Turner County, South Dakota; Lyon County, Iowa. It was in force for 44 min. 9 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Aug 6, 2000, 1:46 AM CDT (06:46 UTC)
Expired: Aug 6, 2000, 2:30 AM CDT
In force: 44 min
Issued by: NWS Sioux Falls, SD
Area: Whole counties

Counties Lyon County, IA, Lincoln County, SD, Minnehaha County, SD, Turner County, SD

The radar

The Sioux Falls radar (KFSD), 20 km from the middle of the area, began a volume at 06:48 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

Time	Report	Where	Remark
Aug 6, 1:50 AM CDT	Hail 0.88	Marion, SD	Large hail caused severe crop damage, especially just west of Marion where the hail fell for 15 minutes and covered the ground. Several soybean crops were completely destroyed, and other bean and corn crops were damaged to the extent of producing greatly reduc
Aug 6, 2:00 AM CDT	Hail 1	Pumpkin Center, SD
Aug 6, 2:10 AM CDT	Hail 2	Inwood, IA
Aug 6, 2:10 AM CDT	Hail 1	Canton, SD	Large hail severely damaged crops. The amount of crop damage was not determined.
Aug 6, 2:15 AM CDT	Thunderstorm Wind 52 E	Inwood, IA	Thunderstorm winds caused tree and power line damage, resulting in a power outage.
Aug 6, 2:15 AM CDT	Hail 0.88	Inwood, IA
Aug 6, 2:15 AM CDT	Hail 1	Inwood, IA
Aug 6, 2:15 AM CDT	Thunderstorm Wind 61 E	Inwood, IA
Aug 6, 2:20 AM CDT	Hail 0.75	Doon, IA

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 00:00Z, 6.8 hours before the alert went out and 213 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: 1907 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 1173 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 3.5

Open this sounding in Storm Lab

The text

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

413 
WUUS53 KFSD 060647
SVRFSD
IAC119-SDC083-099-125-060730-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
146 AM CDT SUN AUG 6 2000

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN LYON COUNTY IN NORTHWEST IOWA
  LINCOLN COUNTY IN SOUTHEAST SOUTH DAKOTA
  SOUTHERN MINNEHAHA COUNTY IN SOUTHEAST SOUTH DAKOTA
  TURNER COUNTY IN SOUTHEAST SOUTH DAKOTA

* UNTIL 230 AM CDT

* AT 146 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 3 MILES NORTH OF VALLEY SPRINGS
  TO 7 MILES WEST OF PARKER...OR FROM 12 MILES WEST OF LUVERNE TO 7
  MILES WEST OF PARKER...MOVING SOUTHEAST AT 35 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  SIOUX FALLS AROUND 150 AM CDT
  CHANCELLOR AND HARRISBURG AROUND 155 AM CDT
  HURLEY AND LENNOX AROUND 200 AM CDT
  LARCHWOOD AROUND 205 AM CDT
  VIBORG AND WORTHING AROUND 210 AM CDT

THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. GO INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Sioux Falls, SD wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 5, 8:30 PM CDT, 5 hours 16 minutes earlier.

Area forecast discussion, Aug 5, 8:30 PM CDT, 5 hours 16 minutes before

AREA FORECAST DISCUSSION FOR SOUTHEAST SD/SOUTHWEST MN/NORTHWEST IA
NATIONAL WEATHER SERVICE SIOUX FALLS SD
830 PM CDT SAT AUG 5 2000

COLD FRONT CONTINUES TO MOVE EAST OUT OF THE AREA BUT NOT BEFORE
TRIGGERING A FEW WARNINGS FOR WOODBURY COUNTY.  OTHER SHOWERS IN CWA
HAVE DISSIPATED WITH THE SETTING OF THE SUN.  BIG QUESTION IS
WHETHER OR NOT WE WILL SEE PRECIP DEVELOPMENT AS NEXT SHORT WAVE
PASSES THROUGH.  MESOETA SHOWS MOST OF THE LIFT SHOULD OCCUR BEFORE
MIDNIGHT...BUT IT ALSO KEEPS MOST OF THE DYNAMICS TO THE NORTH OF
OUR CWA.  AT THIS POINT I FEEL ILL KEEP MENTION OF A CHANCE OF TSRA
ACROSS NORTHERN COUNTIES BUT NOTHING AS FAR SOUTH AS KFSD.  THE ONLY
FLY IN THE OINTMENT WITH THIS THINKING WOULD BE ANY OUTFLOW
BOUNDARIES THAT DEVELOP FROM NORTHERN CONVECTION.  WILL UPDATE ALL
ZONES TO TAKE OUT MENTION OF EVENING.

.FSD...NONE.
HEITKAMP

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 5, 10:49 PM CDT	Severe Thunderstorm Warning	FSD	Beadle, Jerauld	41 min
Aug 5, 11:25 PM CDT	Severe Thunderstorm Warning	FSD	Sanborn	45 min
Aug 5, 11:44 PM CDT	Severe Thunderstorm Warning	FSD	Beadle, Miner	46 min
Aug 5, 11:55 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Jerauld	35 min
Aug 6, 12:28 AM CDT	Severe Thunderstorm Warning	FSD	Aurora, Davison	32 min
Aug 6, 12:29 AM CDT	Severe Thunderstorm Warning	FSD	Lake, McCook, Miner	41 min
Aug 6, 12:59 AM CDT	Severe Thunderstorm Warning	FSD	Aurora, Davison	31 min
Aug 6, 1:11 AM CDT	Severe Thunderstorm Warning	FSD	Minnehaha	34 min
Aug 6, 1:18 AM CDT	Severe Thunderstorm Warning	FSD	McCook, Turner	27 min
Aug 6, 1:27 AM CDT	Severe Thunderstorm Warning	FSD	Hanson, Hutchinson	48 min
Aug 6, 2:30 AM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Union	45 min
Aug 6, 3:01 AM CDT	Severe Thunderstorm Warning	FSD	O'Brien	29 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2000 Severe Thunderstorm Warnings in Iowa, 2000 Every severe thunderstorm warning in 2000

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; radar from the NEXRAD Level II archive.