Alert archive / South Dakota / Tornado Warnings in 2000

Tornado Warning 38, NWS Sioux Falls, SD

August 7, 2000Bon Homme County, Yankton County, South Dakota

NWS Sioux Falls, SD issued this tornado warning at Aug 7, 2000, 8:32 PM CDT for Bon Homme County, Yankton County, South Dakota. It was in force for 28 min. 1 report 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 7, 2000, 8:32 PM CDT (01:32 UTC)
Expired
Aug 7, 2000, 9:00 PM CDT
In force
28 min
Issued by
NWS Sioux Falls, SD
Area
Whole counties

Counties Bon Homme County, SD, Yankton County, SD

The radar

The Sioux Falls radar (KFSD), 99 km from the middle of the area, began a volume at 01:32 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

TimeReportWhereRemark
Aug 7, 8:34 PM CDTThunderstorm Wind 52 EScotland, 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 watch it was issued in

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

IssuedProductOfficeLasted
Aug 7, 4:30 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 1.5 hours before the alert went out and 214 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, Omaha, NE at 00:00Z on 2000-08-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3267 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 00:00Z on 2000-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 69 square meters per square second.19395878Sfc1 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
3267 J/kg
Mixed-layer CIN
-74 J/kg
Mixed-layer LCL
1579 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
69 m²/s²
0-3 km storm-relative helicity
172 m²/s²
Significant tornado parameter
0.2
Supercell composite
3.8

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KFSD 080135 COR
TORFSD

SDC009-135-080200-

BULLETIN - EAS ACTIVATION REQUESTED...CORRECTION ADDED LESTERVILLE
TORNADO WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
834 PM CDT MON AUG 7 2000

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN BON HOMME COUNTY IN SOUTHEAST SOUTH DAKOTA
  YANKTON COUNTY IN SOUTHEAST SOUTH DAKOTA

* UNTIL 900 PM CDT

* AT 832 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO 5 MILES NORTH OF TABOR...OR ABOUT 17 MILES NORTHWEST OF
  YANKTON...MOVING EAST AT 45 MPH.

* THE TORNADO WILL BE NEAR...
  LESTERVILLE AROUND 840 PM CDT 
  UTICA AROUND 840 PM CDT
  MAYFIELD AROUND 850 PM CDT
  VOLIN AROUND 855 PM CDT

THIS IS AN EXTREMELY DANGEROUS AND POTENTIALLY LIFE THREATENING
SITUATION. IF YOU ARE IN THE PATH OF THIS TORNADO...TAKE COVER
IMMEDIATELY. GO TO THE BASEMENT. IF A BASEMENT IS NOT AVAILABLE...GO
TO A SMALL INTERIOR ROOM' ON THE LOWEST FLOOR.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 7, 7:01 PM CDTSevere Thunderstorm WarningFSDCharles Mix, Douglas29 min
Aug 7, 7:01 PM CDTSevere Thunderstorm WarningFSDLincoln, Minnehaha, Turner44 min
Aug 7, 7:01 PM CDTSevere Thunderstorm WarningFSDMcCook44 min
Aug 7, 7:09 PM CDTTornado WarningFSDDavison36 min
Aug 7, 7:12 PM CDTSevere Thunderstorm WarningFSDHutchinson33 min
Aug 7, 7:26 PM CDTSevere Thunderstorm WarningFSDLake34 min
Aug 7, 7:29 PM CDTSevere Thunderstorm WarningFSDMoody31 min
Aug 7, 7:41 PM CDTSevere Thunderstorm WarningFSDLincoln, Minnehaha34 min
Aug 7, 7:42 PM CDTSevere Thunderstorm WarningFSDBon Homme, Charles Mix48 min
Aug 7, 7:48 PM CDTSevere Thunderstorm WarningFSDHutchinson42 min
Aug 7, 8:42 PM CDTSevere Thunderstorm WarningFSDCharles Mix33 min
Aug 7, 11:18 PM CDTSevere Thunderstorm WarningFSDUnion27 min
Aug 7, 11:28 PM CDTSevere Thunderstorm WarningFSDClay32 min
Aug 7, 11:47 PM CDTSevere Thunderstorm WarningFSDUnion28 min

Nearby

Tornado Warnings in South Dakota, 2000Every tornado warning in 2000Tornadoes 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.