Alert archive / South Dakota / Tornado Warnings in 1993

Tornado Warning 21, NWS Aberdeen, SD

July 22, 1993Campbell County, Walworth County, South Dakota

NWS Aberdeen, SD issued this tornado warning at Jul 22, 1993, 6:16 PM CDT for Campbell County, Walworth County, South Dakota. It was in force for 29 min.

The area

The counties it named.

The facts

Issued
Jul 22, 1993, 6:16 PM CDT (23:16 UTC)
Expired
Jul 22, 1993, 6:45 PM CDT
In force
29 min
Issued by
NWS Aberdeen, SD
Area
Whole counties

Counties Campbell County, SD, Walworth County, SD

The nearest sounding before it

Aberdeen, SD (KHON), launched 12:00Z, 11.3 hours before the alert went out and 150 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 12:00Z on 1993-07-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 19 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 12:00Z on 1993-07-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 98 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
19 J/kg
Mixed-layer CIN
-234 J/kg
Mixed-layer LCL
568 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
98 m²/s²
0-3 km storm-relative helicity
150 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 KABR 222316
TORABR
SDC021-129-222345-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING 
NATIONAL WEATHER SERVICE ABERDEEN SD
616 PM CDT THU JUL 22 1993

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 645 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE NORTH CENTRAL PART OF SOUTH DAKOTA
      SOUTHERN CAMPBELL...NORTHERN WALWORTH

SOME OF THE CITIES INCLUDED IN THIS WARNING ARE MOBRIDGE...GLENHAM
...SELBY AND MOUND CITY.

AT 615 PM CDT  A TORNADO WAS REPORTED BY THE PUBLIC 5 MILES SOUTH
OF GLENHAM MOVING EAST AT 20 MPH.

 NUMEROUS REPORTS OF FUNNEL CLOUDS HAVE ALSO BEEN REPORTED BY
SPOTTERS AND THE PUBLIC IN THE SAME AREA.

IF YOU ARE IN THE PATH OF THIS TORNADO...YOU SHOULD GO TO A BASEMENT
SHELTER IF AVAILABLE. OTHERWISE GO TO A CENTRAL INTERIOR ROOM ON THE
LOWEST FLOOR POSSIBLE. CARS AND MOBILE HOMES SHOULD BE ABANDONED FOR
A REINFORCED BUILDING.

OLSON

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 22, 4:17 PM CDTTornado WarningABRPotter28 min
Jul 22, 4:47 PM CDTTornado WarningABRPotter28 min
Jul 22, 6:04 PM CDTTornado WarningABRBuffalo, Lyman26 min
Jul 22, 6:04 PM CDTTornado WarningABRHughes26 min
Jul 22, 6:33 PM CDTTornado WarningABRBuffalo, Lyman27 min

Nearby

Tornado Warnings in South Dakota, 1993Every tornado warning in 1993Tornadoes in 1993

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.