Alert archive / South Dakota / Tornado Warnings in 2000

Tornado Warning 40, NWS Sioux Falls, SD

August 16, 2000Bon Homme County, Yankton County, South Dakota

NWS Sioux Falls, SD issued this tornado warning at Aug 16, 2000, 6:37 PM CDT for Bon Homme County, Yankton County, South Dakota. It was in force for 23 min. 3 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 16, 2000, 6:37 PM CDT (23:37 UTC)
Expired: Aug 16, 2000, 7:00 PM CDT
In force: 23 min
Issued by: NWS Sioux Falls, SD
Area: Whole counties

Counties Bon Homme County, SD, Yankton County, SD

What was reported inside it

Time	Report	Where	Remark
Aug 16, 6:47 PM CDT	Thunderstorm Wind 52 E	Lesterville, SD
Aug 16, 6:52 PM CDT	Thunderstorm Wind 61 E	Yankton, SD	Thunderstorm winds caused tree and power line damage. There was also some damage to vehicles from tree debris.
Aug 16, 6:52 PM CDT	Hail 0.88	Yankton, 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.

Issued	Product	Office	Lasted
Aug 16, 4:30 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 11.6 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-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: 277 J/kg
Mixed-layer CIN: -476 J/kg
Mixed-layer LCL: 1022 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 93 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.

859 
WFUS53 KFSD 162337
TORFSD
SDC009-135-170000-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
637 PM CDT WED AUG 16 2000

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

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

* UNTIL 700 PM CDT

* AT 637 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO 6 MILES EAST OF SPRINGFIELD...OR ABOUT 20 MILES NORTH OF
  BLOOMFIELD...MOVING EAST AT 40 MPH.

* THE TORNADO WILL BE NEAR...
  YANKTON AROUND 655 PM CDT

THIS WARNING REPLACES THE SEVERE THUNDERSTORM WARNING PREVIOUSLY
ISSUED FOR THE WARNED AREA.

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.

Issued	Product	Office	Counties	Lasted
Aug 16, 4:38 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Charles Mix	37 min
Aug 16, 5:44 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Charles Mix	31 min
Aug 16, 6:10 PM CDT	Severe Thunderstorm Warning	FSD	Hutchinson, McCook, Turner	35 min
Aug 16, 6:18 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme	27 min
Aug 16, 6:41 PM CDT	Severe Thunderstorm Warning	FSD	Yankton	34 min
Aug 16, 6:57 PM CDT	Severe Thunderstorm Warning	FSD	Clay	48 min

Nearby

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