Alert archive / South Dakota / Tornado Warnings in 1986

Tornado Warning 2, NWS Aberdeen, SD

May 8, 1986Hughes County, Lyman County, Stanley County, South Dakota

NWS Aberdeen, SD issued this tornado warning at May 8, 1986, 4:30 PM CDT for Hughes County, Lyman County, Stanley County, South Dakota. It was in force for 30 min.

The area

The counties it named.

The facts

Issued
May 8, 1986, 4:30 PM CDT (21:30 UTC)
Expired
May 8, 1986, 5:00 PM CDT
In force
30 min
Issued by
NWS Aberdeen, SD
Area
Whole counties

Counties Hughes County, SD, Lyman County, SD, Stanley 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 12:00Z, 9.5 hours before the alert went out and 160 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 1986-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1986-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 130 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
787 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
130 m²/s²
0-3 km storm-relative helicity
297 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KHON 082130
TORHON
SDC065-085-117-082200-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING
NATIONAL WEATHER SERVICE HURON SD
430 PM CDT THU MAY 8 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 500 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES 
OF


CENTRAL SOUTH DAKOTA...SOUTHERN HUGHES...NORTHERN LYMAN AND 
 SOUTHEAST STANLEY

THIS WARNING INCLUDES THE ADJACENT WATERS OF THE MISSOURI RIVER.

SOME OF THE CITIES INCLUDED IN THE WARNING AREA ARE PIERRE AND
FORT PIERRE.

AT 425 PM CDT  RADAR INDICATED A POSSIBLE TORNADO 30 MILES SOUTH
 SOUTHEAST OF PIERRE MOVING NORTH AT 30 MILES AN HOUR.

AT             A TORNADO WAS REPORTED

IF Y[OU 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.

SPRINGER

The office that day

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

IssuedProductOfficeCountiesLasted
May 8, 9:37 AM CDTSevere Thunderstorm WarningABRDewey, Potter, Walworth68 min
May 8, 11:48 AM CDTSevere Thunderstorm WarningABRSpink57 min
May 8, 5:09 PM CDTSevere Thunderstorm WarningABRHughes, Lyman51 min
May 8, 5:09 PM CDTSevere Thunderstorm WarningABRSully51 min
May 8, 6:24 PM CDTSevere Thunderstorm WarningABRHughes, Sully36 min

Nearby

Tornado Warnings in South Dakota, 1986Every tornado warning in 1986Tornadoes in 1986

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.