Alert archive / South Dakota / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 55, NWS Aberdeen, SD

July 11, 1987Hughes County, Hyde County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 11, 1987, 6:26 PM CDT for Hughes County, Hyde County, South Dakota. It was in force for 64 min.

The area

The counties it named.

The facts

Issued
Jul 11, 1987, 6:26 PM CDT (23:26 UTC)
Expired
Jul 11, 1987, 7:30 PM CDT
In force
64 min
Issued by
NWS Aberdeen, SD
Area
Whole counties

Counties Hughes County, SD, Hyde 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

Rapid City, SD (KRAP), launched 12:00Z, 11.4 hours before the alert went out and 254 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, Rapid City, SD at 12:00Z on 1987-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 12 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, Rapid City, SD at 12:00Z on 1987-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 156 square meters per square second.1939587897Sfc1 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
12 J/kg
Mixed-layer CIN
-208 J/kg
Mixed-layer LCL
719 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
156 m²/s²
0-3 km storm-relative helicity
205 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 10, 7:16 PM CDTSevere Thunderstorm WarningABRFaulk, Potter59 min
Jul 10, 8:02 PM CDTSevere Thunderstorm WarningABRBrown, Edmunds, McPherson58 min
Jul 10, 8:36 PM CDTSevere Thunderstorm WarningABRBrown54 min
Jul 10, 10:22 PM CDTSevere Thunderstorm WarningABRMarshall, Roberts68 min
Jul 10, 11:30 PM CDTSevere Thunderstorm WarningABRRoberts35 min
Jul 11, 2:13 AM CDTSevere Thunderstorm WarningABRHamlin, Kingsbury62 min
Jul 11, 2:19 AM CDTSevere Thunderstorm WarningABRDeuel, Hamlin56 min
Jul 11, 2:38 AM CDTSevere Thunderstorm WarningABRCodington, Deuel, Hamlin67 min
Jul 11, 2:38 AM CDTSevere Thunderstorm WarningABRKingsbury67 min
Jul 11, 5:07 PM CDTSevere Thunderstorm WarningABRStanley68 min
Jul 11, 5:25 PM CDTTornado WarningABRHughes, Stanley, Sully35 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.