Alert archive / South Carolina / Tornado Warnings in 1999

Tornado Warning 3, NWS Columbia, SC

April 8, 1999Barnwell County, South Carolina

NWS Columbia, SC issued this tornado warning at Apr 8, 1999, 7:27 PM EDT for Barnwell County, South Carolina. It was in force for 33 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Apr 8, 1999, 7:27 PM EDT (23:27 UTC)
Expired
Apr 8, 1999, 8:00 PM EDT
In force
33 min
Issued by
NWS Columbia, SC
Area
Whole counties

County Barnwell County, SC

What was reported inside it

TimeReportWhereRemark
Apr 8, 7:33 PM EDTHail 1Barnwell, SCSpotter and damage survey confirmed hail damage to pickup truck.
Apr 8, 7:36 PM EDTTornado F0Barnwell, SCSpotter and damage survey confirmed an F0 tornado took down trees and powerlines.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 11.5 hours before the alert went out and 140 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 1999-04-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1021 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 1999-04-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 169 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
1021 J/kg
Mixed-layer CIN
-70 J/kg
Mixed-layer LCL
547 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
169 m²/s²
0-3 km storm-relative helicity
156 m²/s²
Significant tornado parameter
0.0
Supercell composite
8.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KCAE 082327 RRA
TORCAE
SCC011-090000-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
727 PM EDT THU APR 8 1999

THE NATIONAL WEATHER SERVICE IN COLUMBIA SC HAS ISSUED A

* TORNADO WARNING FOR...
  BARNWELL COUNTY IN SOUTH CAROLINA

* UNTIL 800 PM EDT 

* AT 726 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  A LIKELY TORNADO 6 MILES WEST-NORTHWEST OF YENOME. THE STORM 
  WAS MOVING TOWARD THE SOUTHEAST AT 35 MPH.

* THE TORNADO WILL BE NEAR...
  YENOME AT 735 PM EDT
  KLINE AT 740 PM EDT

THIS IS A DANGEROUS STORM...TAKE COVER IMMEDIATELY IF YOU ARE IN 
ITS PATH. 

AWP/RJL

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 8, 5:24 PM EDTSevere Thunderstorm WarningCAEMcCormick66 min
Apr 8, 6:25 PM EDTSevere Thunderstorm WarningCAEEdgefield35 min
Apr 8, 6:35 PM EDTSevere Thunderstorm WarningCAEAiken40 min
Apr 8, 6:45 PM EDTSevere Thunderstorm WarningCAEBarnwell45 min
Apr 8, 7:59 PM EDTSevere Thunderstorm WarningCAEBamberg31 min

Nearby

Tornado Warnings in South Carolina, 1999Every tornado warning in 1999Tornadoes in 1999

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.