Alert archive / South Carolina / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 14, NWS Charleston, SC

August 29, 1987Williamsburg County, South Carolina

NWS Charleston, SC issued this severe thunderstorm warning at Aug 29, 1987, 4:52 PM EDT for Williamsburg County, South Carolina. It was in force for 68 min.

The area

The counties it named.

The facts

Issued
Aug 29, 1987, 4:52 PM EDT (20:52 UTC)
Expired
Aug 29, 1987, 6:00 PM EDT
In force
68 min
Issued by
NWS Charleston, SC
Area
Whole counties

County Williamsburg County, SC

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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 8.9 hours before the alert went out and 274 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, Greensboro/Hi Pt, NC at 12:00Z on 1987-08-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Greensboro/Hi Pt, NC at 12:00Z on 1987-08-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
NaN m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
5 m²/s²
0-3 km storm-relative helicity
75 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.1

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 Charleston, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 29, 3:14 PM EDTSevere Thunderstorm WarningCHSCharleston, Colleton, Dorchester61 min
Aug 29, 3:45 PM EDTSevere Thunderstorm WarningCHSBerkeley60 min
Aug 29, 4:12 PM EDTSevere Thunderstorm WarningCHSBeaufort63 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 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.