Alert archive / South Dakota / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 84, NWS Sioux Falls, SD

August 6, 1992Todd County, South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Aug 6, 1992, 5:35 PM CDT for Todd County, South Dakota. It was in force for 40 min.

The area

The counties it named.

The facts

Issued
Aug 6, 1992, 5:35 PM CDT (22:35 UTC)
Expired
Aug 6, 1992, 6:15 PM CDT
In force
40 min
Issued by
NWS Sioux Falls, SD
Area
Whole counties

County Todd County, SD

The nearest sounding before it

Rapid City, SD (KRAP), launched 12:00Z, 10.6 hours before the alert went out and 199 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, Rapid City, SD at 12:00Z on 1992-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 179 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, Rapid City, SD at 12:00Z on 1992-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 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
179 J/kg
Mixed-layer CIN
-548 J/kg
Mixed-layer LCL
1628 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
34 m²/s²
0-3 km storm-relative helicity
5 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.

000 
TTAA00 KFSD 062234
SVRFSD
SDC121-062315-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
535 PM CDT (435 PM MDT) THU AUG 6 1992
 
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  615 PM CDT (515 PM MDT)
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTH CENTRAL SOUTH DAKOTA
 
   ...WESTERN TODD COUNTY
 
SOME CITIES AFFECTED BY THIS STORM SHOULD BE PARMALEE AND ST. FRANCIS.
 
AT 530 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 25 MILES EAST OF
MARTIN IN SOUTHWEST SOUTH DAKOTA MOVING EAST AT 25 MPH.
 
IF YOU ARE IN THE PATH OF THIS STORM...YOU SHOULD GET TO A
REINFORCED SHELTER. A SEVERE THUNDERSTORM PRODUCES WINDS IN EXCESS
OF 60 MPH...HAIL 3/4 INCH OR LARGER...DEADLY LIGHTNING...AND HEAVY
RAIN THAT CAN QUICKLY FLOOD A LOW LYING AREA.
 
RYRHOLM

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.

In the hours before

Special weather statement, Aug 6, 5:27 PM CDT, 8 minutes before
SDZALL-062300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
529 PM CDT THU AUG 6 1992

...A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR MUCH OF CENTRAL
SOUTH DAKOTA UNTIL 1000 PM CDT...

A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR CENTRAL SOUTH DAKOTA
UNTIL 1000 PM CDT. THUNDERSTORMS WILL DEVELOP OVER MUCH OF SOUTH DAKOTA
THE REST OF TONIGHT. SOME STORMS WILL BE SEVERE AND WILL PRODUCE LARGE
HAIL...DAMAGING WINDS...FREQ
UENT LIGHTNING...AND LOCALLY HEAVY RAIN.

IF A THUNDERSTORM APPROACHES YOUR AREA...SEEK SHELTER IMMEDIATELY INSIDE
A REINFORCED BUILDING.

MENTZER

Nearby

Severe Thunderstorm Warnings in South Dakota, 1992Every severe thunderstorm warning 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.