Alert archive / South Carolina / Tornado Warnings in 1999

Tornado Warning 4, NWS Columbia, SC

April 15, 1999Bamberg County, South Carolina

NWS Columbia, SC issued this tornado warning at Apr 15, 1999, 4:13 PM EDT for Bamberg County, South Carolina. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 15, 1999, 4:13 PM EDT (20:13 UTC)
Expired
Apr 15, 1999, 4:45 PM EDT
In force
32 min
Issued by
NWS Columbia, SC
Area
Whole counties

County Bamberg County, SC

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 8.2 hours before the alert went out and 104 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 1999-04-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 148 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 1999-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 286 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
148 J/kg
Mixed-layer CIN
-103 J/kg
Mixed-layer LCL
695 m above ground
0-6 km bulk shear
70 kt
0-1 km storm-relative helicity
286 m²/s²
0-3 km storm-relative helicity
347 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The text

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

999 
WFUS1 KCAE 152016 RRA
TORCAE
SCC009-152045-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
413 PM EDT THU APR 15 1999

THE NATIONAL WEATHER SERVICE IN COLUMBIA SC HAS ISSUED A

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

* UNTIL 445 PM EDT 

* AT 408 PM PUBLIC REPORTED A POSSIBLE TORNADO  IN SOUTHERN 
  BAMBERG COUNTY MOVING  BETWEEN BAMBERG AND EHRHARDT. THE 
  STORM  WAS MOVING NORTHEAST AT 45 MPH.

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

LM

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 15, 4:38 PM EDTSevere Thunderstorm WarningCAENewberry52 min
Apr 15, 5:39 PM EDTSevere Thunderstorm WarningCAEAiken36 min
Apr 15, 5:52 PM EDTTornado WarningCAEAiken, Barnwell38 min
Apr 15, 6:26 PM EDTTornado WarningCAEBamberg34 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; the sounding from the Mesonet's radiosonde archive.