Alert archive / South Dakota / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 16, NWS Aberdeen, SD

July 6, 1987McPherson County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 6, 1987, 5:45 PM CDT for McPherson County, South Dakota. It was in force for 60 min.

The area

The counties it named.

The facts

Issued
Jul 6, 1987, 5:45 PM CDT (22:45 UTC)
Expired
Jul 6, 1987, 6:45 PM CDT
In force
60 min
Issued by
NWS Aberdeen, SD
Area
Whole counties

County McPherson 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, 10.8 hours before the alert went out and 116 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 1987-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 190 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 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 1987-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -11 square meters per square second.1939Sfc1 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
190 J/kg
Mixed-layer CIN
-276 J/kg
Mixed-layer LCL
1517 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-11 m²/s²
0-3 km storm-relative helicity
69 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 6, 4:53 PM CDTSevere Thunderstorm WarningABRHughes, Hyde67 min
Jul 6, 5:22 PM CDTSevere Thunderstorm WarningABRHughes, Hyde68 min
Jul 6, 5:26 PM CDTSevere Thunderstorm WarningABRCampbell, Walworth64 min
Jul 6, 5:26 PM CDTSevere Thunderstorm WarningABRPotter64 min
Jul 6, 5:45 PM CDTSevere Thunderstorm WarningABREdmunds, Faulk60 min
Jul 6, 5:47 PM CDTSevere Thunderstorm WarningABRHand, Hyde58 min
Jul 6, 5:54 PM CDTSevere Thunderstorm WarningABRBuffalo66 min
Jul 6, 6:18 PM CDTTornado WarningABRHand27 min
Jul 6, 6:25 PM CDTTornado WarningABRBuffalo35 min
Jul 6, 6:30 PM CDTTornado WarningABRFaulk30 min
Jul 6, 6:35 PM CDTTornado WarningABRLyman25 min
Jul 6, 6:40 PM CDTTornado WarningABRHughes, Hyde10 min
Jul 6, 6:45 PM CDTSevere Thunderstorm WarningABREdmunds, McPherson60 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 1987Every severe thunderstorm warning in 1987

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.