Alert archive / South Dakota / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 26, NWS Aberdeen, SD

June 21, 1986Kingsbury County, Miner County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jun 21, 1986, 6:26 PM CDT for Kingsbury County, Miner County, South Dakota. It was in force for 64 min.

The area

The counties it named.

The facts

Issued
Jun 21, 1986, 6:26 PM CDT (23:26 UTC)
Expired
Jun 21, 1986, 7:30 PM CDT
In force
64 min
Issued by
NWS Aberdeen, SD
Area
Whole counties

Counties Kingsbury County, SD, Miner 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

Minneapolis, MN (KSTC), launched 12:00Z, 11.4 hours before the alert went out and 321 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, Minneapolis, MN at 12:00Z on 1986-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 318 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, Minneapolis, MN at 12:00Z on 1986-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 89 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
318 J/kg
Mixed-layer CIN
-59 J/kg
Mixed-layer LCL
727 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
89 m²/s²
0-3 km storm-relative helicity
106 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.8

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, Jun 21, 4:53 PM CDT, 1 hour 33 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
450 PM CDT SAT JUN 21 1986

...A TORNADO WATCH IS IN EFFECT UNTIL 1000 PM CDT FOR
PARTS OF EASTERN SOUTH DAKOTA...

AT 445 PM CDT RADAR INDICATED AN AREA OF THUNDERSTORMS IN CLARK AND
CODINGTON COUNTIES IN EASTERN SOUTH DAKOTA. THESE STORMS WERE MOVING
NORTHEAST AT 15 MPH AND MAY MOVE ACROSS SOUTHERN ROBERTS AND SOUTHERN
DAY COUNTIES WITHIN THE NEXT HOUR.

INDIVIDUALS IN THE PATH OF THIS AREA OF THUNDERSTORMS SHOULD BE ALERT
FOR HEAVY RAIN..SMALL HAIL..GUSTY SURFACE WINDS AND DANGEROUS LIGHTNING.

THESE STORMS MAY BECOME SEVERE WITH LITTLE NOTICE. BE ON THE ALERT
FOR SEVERE WEATHER AND TAKE SHELTER IMMEDIATELY.
HUSTO#N

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 3:05 PM CDTSevere Thunderstorm WarningABRBeadle55 min
Jun 21, 3:56 PM CDTSevere Thunderstorm WarningABRClark, Codington, Hamlin64 min
Jun 21, 5:05 PM CDTSevere Thunderstorm WarningABRMiner55 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.