Alert archive / South Carolina / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 13, NWS Charleston, SC

August 1, 1986Berkeley County, South Carolina

NWS Charleston, SC issued this severe thunderstorm warning at Aug 1, 1986, 6:30 PM EDT for Berkeley County, South Carolina. It was in force for 60 min.

The area

The counties it named.

The facts

Issued
Aug 1, 1986, 6:30 PM EDT (22:30 UTC)
Expired
Aug 1, 1986, 7:30 PM EDT
In force
60 min
Issued by
NWS Charleston, SC
Area
Whole counties

County Berkeley 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

Charleston AFB, SC (KCHS), launched 12:00Z, 10.5 hours before the alert went out and 33 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, Charleston AFB, SC at 12:00Z on 1986-08-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2816 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, Charleston AFB, SC at 12:00Z on 1986-08-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 67 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
2816 J/kg
Mixed-layer CIN
-57 J/kg
Mixed-layer LCL
838 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
67 m²/s²
0-3 km storm-relative helicity
100 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KCHS 012230 RRA
SVRCHS
SCC015-012330-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
630 PM EDT FRI AUG 1 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 730 PM EDT FOR PEOPLE IN THE FOLLOWING 
COUNTY OF

SOUTH CAROLINA...NORTHERN BERKELEY

AT 6.25 PM EDT  RADAR INDICATED A SEVERE THUNDERSTORM OVER BONNEAU
MOVING SOUTHEAST AT 15 MILES AN HOUR.  3/4 INCH HAIL WAS REPORTED
BY A WEATHER SPOTTER AT BONNEAU.

THIS STORM HAS FREQUENT DANGEROUS LIGHTNING..LARGE HAIL AND STRONG
DAMAGING WINDS.

THIS IS A VERY DANGEROUS STORM...TAKE PRECAUTIONS IMMEDIATELY.

BOATERS..CAMPER AND FISHERMEN IN OR NEAR THE WAXRNED AREA SHOULD
MAKE FOR SAFE PORT IMMEDIATELY. BE PREPARED FOR SUDDEN STRONG
GUSTY WINDS..HAIL AND FREQUENT LIGHTNING.

The office that day

Everything else NWS Charleston, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 1, 6:11 PM EDTSevere Thunderstorm WarningCHSWilliamsburg64 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 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.