Alert archive / South Carolina / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 21, NWS Charleston, SC

June 26, 1994Berkeley County, Charleston County, Dorchester County, South Carolina

NWS Charleston, SC issued this severe thunderstorm warning at Jun 26, 1994, 4:39 PM EDT for Berkeley County, Charleston County, Dorchester County, South Carolina. It was in force for 66 min.

The area

The counties it named.

The facts

Issued
Jun 26, 1994, 4:39 PM EDT (20:39 UTC)
Expired
Jun 26, 1994, 5:45 PM EDT
In force
66 min
Issued by
NWS Charleston, SC
Area
Whole counties

Counties Berkeley County, SC, Charleston County, SC, Dorchester County, SC

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 8.7 hours before the alert went out and 15 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 1994-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 897 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 1994-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 70 square meters per square second.19395878Sfc1 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
897 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
587 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
70 m²/s²
0-3 km storm-relative helicity
99 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KCHS 262042 RRA
SVRCHS
SCC015-019-035-262145-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
439 PM EDT SUN JUN 26 1994
 
THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  545 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN  SOUTH CAROLINA
 
   ...BERKELEY COUNTY...CHARLESTON COUNTY...DORCHESTER COUNTY
 
THIS INCLUDES THE COMMUNITIES OF
SUMMERVILLE..NORTH CHARLESTON..MONCKS CORNER...AWENDAW...MCCLELLANVILLE
 
A LINE OF SEVERE THUNDERSTORMS WAS DETECTED BY RADAR FROM NEAR
SUMMERVILLE TO THE SANTEE-COOPER LAKES...MOVING NORTHEAST AT 40 MILES AN
HOUR.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER CO~VERS THE ROAD.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 26, 4:49 PM EDTSevere Thunderstorm WarningCHSJasper56 min
Jun 26, 4:49 PM EDTSevere Thunderstorm WarningCHSBeaufort, Colleton56 min
Jun 26, 5:02 PM EDTSevere Thunderstorm WarningCHSGeorgetown58 min
Jun 26, 5:26 PM EDTSevere Thunderstorm WarningCHSHorry64 min
Jun 26, 5:32 PM EDTTornado WarningCHSBeaufort28 min
Jun 26, 5:47 PM EDTSevere Thunderstorm WarningCHSBerkeley, Charleston, Dorchester58 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 1994Every severe thunderstorm warning in 1994

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.