Alert archive / South Carolina / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 69, NWS Columbia, SC

May 14, 2012Calhoun County, Orangeburg County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at May 14, 2012, 5:29 PM EDT for Calhoun County, Orangeburg County, South Carolina. It was in force for 46 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
May 14, 2012, 5:29 PM EDT (21:29 UTC)
Expired
May 14, 2012, 6:15 PM EDT
In force
46 min
Issued by
NWS Columbia, SC
Area
Storm-based polygon

Counties Calhoun County, SC, Orangeburg County, SC

The radar

The Columbia radar (KCAE), 39 km from the middle of the area, began a volume at 21:32 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
May 14, 5:35 PM EDTHAIL 1Neeses, SCQUARTER SIZE HAIL IN NEESES.
May 14, 5:35 PM EDTHAIL 1.75Neeses, SCHAIL REPORT AND PICTURE SENT TO WIS-TV.
May 14, 5:54 PM EDTHAIL 1.59 W Orangeburg, SCHAIL REPORT AND PICTURE SENT TO WIS-TV.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 9.5 hours before the alert went out and 122 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 2012-05-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 518 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 2012-05-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 96 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
518 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
722 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
96 m²/s²
0-3 km storm-relative helicity
143 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.0

Open this sounding in Storm Lab

The text

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

048 
WUUS52 KCAE 142129
SVRCAE
SCC017-075-142215-
/O.NEW.KCAE.SV.W.0069.120514T2129Z-120514T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
529 PM EDT MON MAY 14 2012

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN CALHOUN COUNTY IN CENTRAL SOUTH CAROLINA
  NORTHERN ORANGEBURG COUNTY IN CENTRAL SOUTH CAROLINA

* UNTIL 615 PM EDT

* AT 523 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 12
  MILES WEST OF ORANGEBURG...AND MOVING EAST AT 20 MPH.

* SOME COMMUNITIES IN THE WARNING AREA INCLUDE ST. MATTHEWS...
  ORANGEBURG AND BROOKDALE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS!

HAIL UP ONE INCH IN DIAMETER HAS BEEN REPORTED IN NEESES WITH THIS 
STORM. IF YOU ARE IN THE PATH OF THE STORM...TAKE IMMEDIATE ACTION 
TO PROTECT LIFE AND PROPERTY.

REPORT LARGE HAIL...DAMAGING WINDS OR FLOODING TO YOUR COUNTY
SHERIFF...OR CALL THE NATIONAL WEATHER SERVICE...TOLL FREE 1 877 6 3
3...6 7 7 2.

&&

LAT...LON 3351 8122 3354 8121 3361 8115 3370 8102
      3371 8095 3374 8090 3374 8086 3375 8083
      3372 8080 3348 8068 3344 8108 3346 8116
TIME...MOT...LOC 2129Z 260DEG 18KT 3355 8102

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 14, 2:12 PM EDTSpecial Weather StatementCAEOrangeburg48 min
May 14, 2:25 PM EDTTornado WarningCAECalhoun, Clarendon, Orangeburg35 min
May 14, 3:33 PM EDTSpecial Weather StatementCAEClarendon27 min
May 14, 3:37 PM EDTSpecial Weather StatementCAEAiken53 min
May 14, 4:41 PM EDTSevere Thunderstorm WarningCAEAiken, Barnwell49 min
May 14, 4:46 PM EDTSevere Thunderstorm WarningCAECalhoun, Orangeburg44 min
May 14, 5:25 PM EDTSpecial Weather StatementCAELancaster35 min
May 14, 5:26 PM EDTSevere Thunderstorm WarningCAEBamberg, Barnwell, Orangeburg34 min
May 14, 5:50 PM EDTTornado WarningCAEOrangeburg26 min
May 14, 6:01 PM EDTSevere Thunderstorm WarningCAEBamberg, Orangeburg59 min
May 14, 6:14 PM EDTSevere Thunderstorm WarningCAEBamberg, Barnwell46 min
May 14, 6:30 PM EDTSpecial Weather StatementCAEChesterfield45 min
May 14, 6:58 PM EDTSevere Thunderstorm WarningCAECalhoun, Orangeburg47 min
May 14, 7:03 PM EDTSevere Thunderstorm WarningCAEBamberg, Barnwell, Orangeburg42 min
May 14, 7:22 PM EDTSevere Thunderstorm WarningCAEFairfield23 min
May 14, 7:38 PM EDTSevere Thunderstorm WarningCAEChesterfield, Lancaster52 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2012Every severe thunderstorm warning in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.