Alert archive / South Dakota / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 113, NWS Aberdeen, SD

August 16, 1986Jerauld County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Aug 16, 1986, 8:06 PM CDT for Jerauld County, South Dakota. It was in force for 69 min.

The area

The counties it named.

The facts

Issued
Aug 16, 1986, 8:06 PM CDT (01:06 UTC)
Expired
Aug 16, 1986, 9:15 PM CDT
In force
69 min
Issued by
NWS Aberdeen, SD
Area
Whole counties

County Jerauld 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, 1.1 hours before the alert went out and 95 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 1986-08-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3044 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 1986-08-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 197 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
3044 J/kg
Mixed-layer CIN
-66 J/kg
Mixed-layer LCL
1221 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
197 m²/s²
0-3 km storm-relative helicity
507 m²/s²
Significant tornado parameter
5.1
Supercell composite
42.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KHON 170106
SVRHON
SDC005-025-073-170215-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HURON SD
806 PM CDT SAT AUG 16 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 915 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF

EAST CENTRAL SOUTH DAKOTA...BEADLE...CLARK AND JERAULD

SOME OF THE CITIES INCLUDED IN THE WARNING AREA ARE
RAYMOND..CLARK..WILLOW LAKE..WOLSEY..CAVOUR..HURON..ALPENA
AND WESSINGTON SPRINGS.

AT 805 PM CDT RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS
FROM CENTRAL CLARK COUNTY ACROSS BEADLE COUNTY TO NORTHWEST
JERAULD COUNTY.

IF YOU ARE IN THE PATH OF THIS STORM..YOU SHOULD GO TO A REINFORCED
SHELTER. A SEVERE THUNDERSTORM PRODUCES ANY OR ALL OF THE FOLLOWING...
DAMAGING WIND IN EXCESS OF 60 MPH..HAIL 3/4 INCH OR LARGER..DEADLY
LIGHTNING..AND VERY HEAVY RAIN THAT CAN FLOOD LOW LYING AREAS VERY
QUICKLY.

THESE STORMS CAN AND OCmCASIONALLY DO PRODUCE A TORNADO WITH LITTLE OR
NO ADVANCE WARNING SO BE ON THE LOOKOUT.

MILLER/STOREY

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 16, 7:02 PM CDTSevere Thunderstorm WarningABRJerauld58 min
Aug 16, 8:06 PM CDTSevere Thunderstorm WarningABRBeadle, Clark69 min
Aug 16, 8:53 PM CDTSevere Thunderstorm WarningABRMiner, Sanborn67 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 1986Every severe thunderstorm warning 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.