Alert archive / South Dakota / Tornado Warnings in 1990

Tornado Warning 12, NWS Aberdeen, SD

August 10, 1990Hughes County, South Dakota

NWS Aberdeen, SD issued this tornado warning at Aug 10, 1990, 5:33 AM CDT for Hughes County, South Dakota. It was in force for 27 min.

The area

The counties it named.

The facts

Issued
Aug 10, 1990, 5:33 AM CDT (10:33 UTC)
Expired
Aug 10, 1990, 6:00 AM CDT
In force
27 min
Issued by
NWS Aberdeen, SD
Area
Whole counties

County Hughes County, SD

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Aberdeen, SD (KHON), launched 00:00Z, 10.6 hours before the alert went out and 138 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 1990-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 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 1990-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -3 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
1 J/kg
Mixed-layer CIN
-193 J/kg
Mixed-layer LCL
2414 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
-3 m²/s²
0-3 km storm-relative helicity
107 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 KHON 101033
TORHON
SDC065-101100-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING 
NATIONAL WEATHER SERVICE HURON SD 
533 AM CDT FRI AUG 10 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 600 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY

   IN THE CENTRAL PART OF SOUTH DAKOTA
      EASTERN HUGHES

SOME OF THE CITIES INCLUDED IN THIS WARNING ARE DEBRAY...HARROLD...
AND STEPHAN.

AT 530 AM CDT  RADAR INDICATED A POSSIBLE TORNADO 20 MILES EAST OF
PIERRE NEAR HARROLD MOVING SOUTH SOUTHEAST AT 30 MILES AN HOUR.

IF YOU ARE IN THE PATH OF THIS TORNADO...GO TO A BASEMENT SHELTER
IF ONE IS AVAILABLE. OTHERWISE GO TO A CENTRAL INTERIOR ROOM ON THE
LOWEST FLOOR. ABANDON VEHICLES AND MOBILE HOMES FOR A REINFORCED
BUILDING OR A LOW AREA.

SPRINGER

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 10, 5:19 AM CDTSevere Thunderstorm WarningABRHughes, Lyman41 min
Aug 10, 6:00 AM CDTSevere Thunderstorm WarningABRHughes, Hyde, Lyman60 min
Aug 10, 6:00 AM CDTSevere Thunderstorm WarningABRBuffalo60 min

Nearby

Tornado Warnings in South Dakota, 1990Every tornado warning in 1990Tornadoes in 1990

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.