Alert archive / South Dakota / Tornado Warnings in 2000

Tornado Warning 11, NWS Rapid City, SD

August 4, 2000Custer County, South Dakota

NWS Rapid City, SD issued this tornado warning at Aug 4, 2000, 9:46 PM MDT for Custer County, South Dakota. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Aug 4, 2000, 9:46 PM MDT (03:46 UTC)
Expired: Aug 4, 2000, 10:15 PM MDT
In force: 29 min
Issued by: NWS Rapid City, SD
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Custer County, SD

The nearest sounding before it

Rapid City, SD (KUNR), launched 00:00Z, 3.8 hours before the alert went out and 65 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: 1363 J/kg
Mixed-layer CIN: -123 J/kg
Mixed-layer LCL: 2332 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 142 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.6

Open this sounding in Storm Lab

The text

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

957 
WFUS53 KUNR 050346
TORRAP
SDC033-050415-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE RAPID CITY SD
946 PM MDT FRI AUG 4 2000

THE NATIONAL WEATHER SERVICE IN RAPID CITY SD HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL CUSTER COUNTY IN SOUTHWESTERN SOUTH DAKOTA

* UNTIL 1015 PM MDT

* AT 944 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADIC THUNDERSTORM 3 MILES SOUTHEAST OF PRINGLE...OR ABOUT 11
  MILES NORTH OF HOT SPRINGS...MOVING EAST AT 35 MPH.

* SOME LOCATIONS AFFECTED
  WIND CAVE PARK HEADQUARTERS AROUND 950 PM MDT
  FAIRBURN AROUND 1010 PM MDT

MOVE QUICKLY TO A STURDY INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. ABANDON YOUR CAR OR MOBILE HOME FOR A STRONGER
SHELTER.

LAT...LON 4367 10366 4350 10363 4350 10302 4374 10300

P. MURPHY

What forecasters said that day

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

NWS Rapid City, SD wrote its last area forecast discussion before this tornado warning went out at Aug 4, 8:45 PM MDT, 1 hour 1 minute earlier.

Area forecast discussion, Aug 4, 8:45 PM MDT, 1 hour 1 minute before

AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY
NATIONAL WEATHER SERVICE RAPID CITY SD
845 PM MDT FRI AUG 04 2000

ZONE UPDATE TO HIGHLIGHT NEW SVR WATCH 647 AND CONTINUE 645.
OTHERWISE...JUST A FEW TWEAKS.

.UNR...NONE

MURPHY

In the hours before

Local storm report, Aug 4, 8:25 PM MDT, 1 hour 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
825 PM MDT FRI AUG 04 2000

TIME(MDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....|

0820 PM    3 E ROCHELLE              WY   .88 INCH HAIL
08/04/00   WESTON                         REPORTED BY PUBLIC.

N

Special weather statement, Aug 4, 8:40 PM MDT, 1 hour 6 minutes before

SDZ014-032-043-044-046-047-049-050300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RAPID CITY SD
840 PM MDT FRI AUG 4 2000

...SEVERE THUNDERSTORM WATCH FOR CENTRAL SOUTH DAKOTA CANCELLED...

THE SEVERE THUNDERSTORM WATCH FOR CENTRAL SOUTH DAKOTA HAS BEEN
CANCELLED. A NEW SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR MUCH
OF EASTERN SOUTH DAKOTA. THE NEW SEVERE THUNDERSTORM WATCH IS IN
EFFECT FOR TRIPP COUNTY IN SOUTH CENTRAL SOxUTH DAKOTA UNTIL 4 AM
CDT (3 AM MDT). NO WATCHES ARE IN EFFECT FOR HAAKON...ZIEBACH...
JACKSON...BENNETT...MELLETTE...AND TODD COUNTIES.

MURPHY

The office that day

Everything else NWS Rapid City, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 4, 6:06 PM MDT	Severe Thunderstorm Warning	UNR	Todd	39 min
Aug 4, 9:25 PM MDT	Severe Thunderstorm Warning	UNR	Custer	50 min
Aug 4, 10:16 PM MDT	Severe Thunderstorm Warning	UNR	Custer	44 min
Aug 4, 10:31 PM MDT	Severe Thunderstorm Warning	UNR		44 min
Aug 4, 10:47 PM MDT	Severe Thunderstorm Warning	UNR	Jackson	43 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; the sounding from the Mesonet's radiosonde archive.