Alert archive / South Carolina / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 246, NWS Columbia, SC

December 26, 20126 counties in South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at Dec 26, 2012, 9:14 AM EST for 6 counties in South Carolina. It was in force for 61 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Dec 26, 2012, 9:14 AM EST (14:14 UTC)
Expired
Dec 26, 2012, 10:15 AM EST
In force
61 min
Issued by
NWS Columbia, SC
Area
Storm-based polygon

Counties Calhoun County, SC, Chesterfield County, SC, Kershaw County, SC, Lee County, SC, Richland County, SC, Sumter County, SC

The radar

The Columbia radar (KCAE), 103 km from the middle of the area, began a volume at 14:14 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.

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 2.2 hours before the alert went out and 164 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 2012-12-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 560 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Charleston AFB, SC at 12:00Z on 2012-12-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 222 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
560 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
612 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
222 m²/s²
0-3 km storm-relative helicity
214 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.0

Open this sounding in Storm Lab

The text

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

981 
WUUS52 KCAE 261414
SVRCAE
SCC017-025-055-061-079-085-261515-
/O.NEW.KCAE.SV.W.0246.121226T1414Z-121226T1515Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
914 AM EST WED DEC 26 2012

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CHESTERFIELD COUNTY IN CENTRAL SOUTH CAROLINA
  EASTERN KERSHAW COUNTY IN CENTRAL SOUTH CAROLINA
  LEE COUNTY IN CENTRAL SOUTH CAROLINA
  SOUTHEASTERN RICHLAND COUNTY IN CENTRAL SOUTH CAROLINA
  CENTRAL CALHOUN COUNTY IN CENTRAL SOUTH CAROLINA
  WESTERN SUMTER COUNTY IN CENTRAL SOUTH CAROLINA

* UNTIL 1015 AM EST

* AT 910 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED NEAR ST. MATTHEWS...OR 13 MILES
  NORTH OF BROOKDALE...AND MOVING NORTHEAST AT 60 MPH.

* SOME COMMUNITIES IN THE WARNING AREA INCLUDE CHESTERFIELD...
  SUMTER...ST. MATTHEWS...MULBERRY...MILLWOOD...EASTOVER...CHERAW...
  BISHOPVILLE AND OAKLAND

REPORT LARGE HAIL...DAMAGING WINDS OR FLOODING TO YOUR COUNTY
SHERIFF...OR USE
WWW.FACEBOOK.COM/US.NATIONALWEATHERSERVICE.COLUMBIA.GOV TO RELAY
SEVERE WEATHER REPORTS.

LAT...LON 3460 7980 3454 7983 3449 7989 3449 8005
      3436 8028 3433 8023 3437 8019 3437 8017
      3432 8017 3423 8011 3420 8011 3416 8015
      3411 8010 3363 8074 3374 8090 3482 8023
      3482 8013 3465 7980 3461 7978
TIME...MOT...LOC 1414Z 220DEG 71KT 3376 8074

$$

HC
1 follow-up statement
502 
WWUS52 KCAE 261500
SVSCAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA SC
1000 AM EST WED DEC 26 2012

SCC017-079-261510-
/O.CAN.KCAE.SV.W.0246.000000T0000Z-121226T1515Z/
RICHLAND SC-CALHOUN SC-
1000 AM EST WED DEC 26 2012

...THE SEVERE THUNDERSTORM WARNING FOR CALHOUN AND RICHLAND COUNTIES
IS CANCELLED...

REPORT LARGE HAIL...DAMAGING WINDS OR FLOODING TO YOUR COUNTY 
SHERIFF...OR USE
WWW.FACEBOOK.COM/US.NATIONALWEATHERSERVICE.COLUMBIA.GOV TO RELAY
SEVERE WEATHER REPORTS.

LAT...LON 3460 7980 3454 7983 3449 7989 3449 8005
      3436 8028 3433 8023 3437 8019 3437 8017
      3432 8017 3423 8011 3420 8011 3416 8015
      3411 8010 3386 8044 3415 8046 3455 8040
      3481 8024 3482 8013 3465 7980 3461 7978
TIME...MOT...LOC 1500Z 220DEG 70KT 3454 8007

$$

SCC025-055-061-085-261515-
/O.CON.KCAE.SV.W.0246.000000T0000Z-121226T1515Z/
CHESTERFIELD SC-KERSHAW SC-LEE SC-SUMTER SC-
1000 AM EST WED DEC 26 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 AM EST
FOR SUMTER...LEE...KERSHAW AND CHESTERFIELD COUNTIES...

AT 957 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 7 MILES SOUTHWEST OF
PATRICK...OR 9 MILES NORTH OF HARTSVILLE...MOVING NORTHEAST AT 60
MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO MOUNT
CROGHAN...RUBY...CHESTERFIELD AND CHERAW

REPORT LARGE HAIL...DAMAGING WINDS OR FLOODING TO YOUR COUNTY 
SHERIFF...OR USE
WWW.FACEBOOK.COM/US.NATIONALWEATHERSERVICE.COLUMBIA.GOV TO RELAY
SEVERE WEATHER REPORTS.

LAT...LON 3460 7980 3454 7983 3449 7989 3449 8005
      3436 8028 3433 8023 3437 8019 3437 8017
      3432 8017 3423 8011 3420 8011 3416 8015
      3411 8010 3386 8044 3415 8046 3455 8040
      3481 8024 3482 8013 3465 7980 3461 7978
TIME...MOT...LOC 1500Z 220DEG 70KT 3454 8007

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 26, 2:58 AM ESTWind AdvisoryCAEAiken, Bamberg, Barnwell, Calhoun, Chesterfield, Clarendon and 10 more21 hr
Dec 26, 7:14 AM ESTSpecial Weather StatementCAEFairfield, Newberry, Saluda61 min
Dec 26, 7:41 AM ESTAreal Flood AdvisoryCAERichland49 min
Dec 26, 10:16 AM ESTSpecial Weather StatementCAELee14 min
Dec 26, 10:47 AM ESTSpecial Weather StatementCAEClarendon28 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.