Alert archive / South Dakota / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 10, NWS Aberdeen, SD

May 11, 1986Corson County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at May 11, 1986, 7:25 PM MDT for Corson County, South Dakota. It was in force for 40 min.

The area

The counties it named.

The facts

Issued
May 11, 1986, 7:25 PM MDT (01:25 UTC)
Expired
May 11, 1986, 8:05 PM MDT
In force
40 min
Issued by
NWS Aberdeen, SD
Area
Whole counties

County Corson 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

Bismarck Municip, ND (KBIS), launched 00:00Z, 1.4 hours before the alert went out and 124 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, Bismarck Municip, ND at 00:00Z on 1986-05-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 296 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 00:00Z on 1986-05-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 square meters per square second.193958Sfc1 km3 km6 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
296 J/kg
Mixed-layer CIN
-33 J/kg
Mixed-layer LCL
2338 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
121 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

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.

The office that day

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

IssuedProductOfficeCountiesLasted
May 11, 6:17 PM MDTTornado WarningABRCorson28 min
May 11, 6:48 PM MDTSevere Thunderstorm WarningABRCorson42 min
May 12, 12:05 AM MDTSevere Thunderstorm WarningABRSpink60 min
May 12, 1:06 AM MDTSevere Thunderstorm WarningABRSpink69 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.