Alert archive / South Dakota / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 63, NWS Aberdeen, SD

July 23, 1986Marshall County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 23, 1986, 9:12 PM CDT for Marshall County, South Dakota. It was in force for 63 min.

The area

The counties it named.

The facts

Issued
Jul 23, 1986, 9:12 PM CDT (02:12 UTC)
Expired
Jul 23, 1986, 10:15 PM CDT
In force
63 min
Issued by
NWS Aberdeen, SD
Area
Whole counties

County Marshall 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, 2.2 hours before the alert went out and 114 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 1986-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2981 joules per kilogram.LCLEL10008507005003002001001 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 1986-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 119 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
2981 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
2092 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
119 m²/s²
0-3 km storm-relative helicity
233 m²/s²
Significant tornado parameter
0.0
Supercell composite
12.9

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
Jul 23, 7:28 PM CDTSevere Thunderstorm WarningABRRoberts62 min
Jul 23, 8:20 PM CDTSevere Thunderstorm WarningABRMarshall55 min
Jul 23, 9:34 PM CDTSevere Thunderstorm WarningABRRoberts56 min
Jul 23, 10:28 PM CDTFlash Flood WarningABRRoberts4 hr

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.