Alert archive / South Dakota / Tornado Warnings in 1992

Tornado Warning 29, NWS Sioux Falls, SD

August 9, 1992Brookings County, South Dakota

NWS Sioux Falls, SD issued this tornado warning at Aug 9, 1992, 7:41 PM CDT for Brookings County, South Dakota. It was in force for 34 min.

The area

The counties it named.

The facts

Issued
Aug 9, 1992, 7:41 PM CDT (00:41 UTC)
Expired
Aug 9, 1992, 8:15 PM CDT
In force
34 min
Issued by
NWS Sioux Falls, SD
Area
Whole counties

County Brookings County, SD

The nearest sounding before it

Aberdeen, SD (KHON), launched 00:00Z, 0.7 hours before the alert went out and 140 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, Aberdeen, SD at 00:00Z on 1992-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1762 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 00:00Z on 1992-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 35 square meters per square second.193958Sfc1 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
1762 J/kg
Mixed-layer CIN
-208 J/kg
Mixed-layer LCL
1484 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
35 m²/s²
0-3 km storm-relative helicity
223 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFSD 100039
TORFSD
SDC011-100115-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
741 PM CDT SUN AUG 9 1992
 
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  815 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN EAST CENTRAL SOUTH DAKOTA
 
   ...SOUTHERN BROOKINGS COUNTY
 
AT 739 PM CDT LAW ENFORCEMENT OFFICIALS INDICATED A FUNNEL CLOUD OVER
THE TOWN OF BROOKINGS IN EAST CENTRAL SOUTH DAKOTA. THE STORM PRODUCING
THIS FUNNEL CLOUD WAS MOVING EAST AT 10 MILES AN HOUR. PEOPLE IN
BROOKINGS COUNTY...INCLUDING THE TOWN OF BROOKINGS...SHOULD TAKE COVER
IMMEDIATELY.
 
IF YOU LIVE IN A HOME OR APARTMENT...SEEK SHELTER IN THEP
INNERMOST PORTION OF THE BUILDING ON THE LOWEST FLOOR.  IF YOU LIVE
IN A MOBILE HOME...ABANDON IT FOR A STRONGER SHELTER.
 
MENTZER

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 8:02 PM CDTTornado WarningFSDMoody43 min
Aug 9, 8:40 PM CDTTornado WarningFSDMoody50 min
Aug 9, 8:50 PM CDTTornado WarningFSDLake25 min
Aug 9, 9:28 PM CDTSevere Thunderstorm WarningFSDMinnehaha47 min
Aug 9, 9:46 PM CDTSevere Thunderstorm WarningFSDMcCook, Minnehaha44 min
Aug 9, 10:20 PM CDTSevere Thunderstorm WarningFSDLincoln, Turner40 min
Aug 9, 10:38 PM CDTTornado WarningFSDTurner37 min
Aug 9, 11:21 PM CDTSevere Thunderstorm WarningFSDClay, Yankton54 min

Nearby

Tornado Warnings in South Dakota, 1992Every tornado warning in 1992Tornadoes in 1992

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.