Alert archive / Georgia / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 47, NWS Columbia, SC

March 31, 2012Columbia County, Richmond County, Georgia; Edgefield County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at Mar 31, 2012, 10:48 PM EDT for Columbia County, Richmond County, Georgia; Edgefield County, South Carolina. It was in force for 57 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
Mar 31, 2012, 10:48 PM EDT (02:48 UTC)
Expired
Mar 31, 2012, 11:45 PM EDT
In force
57 min
Issued by
NWS Columbia, SC
Area
Storm-based polygon

Counties Columbia County, GA, Richmond County, GA, Edgefield County, SC

The radar

The Columbia radar (KCAE), 100 km from the middle of the area, began a volume at 02:49 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 00:00Z, 2.8 hours before the alert went out and 203 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 00:00Z on 2012-04-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 601 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 00:00Z on 2012-04-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 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
601 J/kg
Mixed-layer CIN
-28 J/kg
Mixed-layer LCL
815 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
20 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.7

Open this sounding in Storm Lab

The text

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

172 
WUUS52 KCAE 010248
SVRCAE
GAC073-245-SCC037-010345-
/O.NEW.KCAE.SV.W.0047.120401T0248Z-120401T0345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
1048 PM EDT SAT MAR 31 2012

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN RICHMOND COUNTY IN EAST CENTRAL GEORGIA
  EASTERN COLUMBIA COUNTY IN EAST CENTRAL GEORGIA
  SOUTHWESTERN EDGEFIELD COUNTY IN CENTRAL SOUTH CAROLINA

* UNTIL 1145 PM EDT

* AT 1041 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED NEAR EVANS...AND MOVING SOUTHTEAST AT 20 MPH.

* SOME COMMUNITIES IN THE WARNING AREA INCLUDE MARTINEZ...
  GROVETOWN...FORT GORDON...EVANS AND AUGUSTA

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

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 3364 8225 3365 8220 3362 8218 3359 8213
      3363 8210 3366 8211 3366 8205 3355 8199
      3353 8201 3349 8199 3348 8195 3341 8192
      3341 8195 3338 8193 3337 8195 3335 8194
      3333 8190 3332 8232
TIME...MOT...LOC 0247Z 339DEG 15KT 3356 8215

$$

LM
1 follow-up statement
248 
WWUS52 KCAE 010309
SVSCAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA SC
1109 PM EDT SAT MAR 31 2012

SCC037-010317-
/O.CAN.KCAE.SV.W.0047.000000T0000Z-120401T0345Z/
EDGEFIELD SC-
1109 PM EDT SAT MAR 31 2012

...THE SEVERE THUNDERSTORM WARNING FOR EDGEFIELD COUNTY IS
CANCELLED...

REPORT LARGE HAIL...DAMAGING WINDS OR FLOODING TO YOUR COUNTY
SHERIFF...OR CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1...8 7
7...6 3 3...6 7 7 2.

LAT...LON 3335 8230 3337 8231 3347 8229 3355 8216
      3359 8213 3359 8210 3353 8201 3349 8199
      3347 8195 3341 8192 3341 8195 3338 8193
      3337 8195 3334 8194 3333 8190 3332 8232
TIME...MOT...LOC 0307Z 339DEG 15KT 3348 8211

$$

GAC073-245-010345-
/O.CON.KCAE.SV.W.0047.000000T0000Z-120401T0345Z/
RICHMOND GA-COLUMBIA GA-
1109 PM EDT SAT MAR 31 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM EDT
FOR COLUMBIA AND RICHMOND COUNTIES...

AT 1107 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A LIKELY SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING 
WIND AND QUARTER SIZE HAIL.  THIS STORM WAS LOCATED NEAR MARTINEZ IN 
EASTERN COLUMBIA COUNTY. MOVEMENT WAS SOUTH AT 15 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
GROVETOWN...FORT GORDON AND AUGUSTA

REPORT LARGE HAIL...DAMAGING WINDS OR FLOODING TO YOUR COUNTY
SHERIFF...OR CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1...8 7
7...6 3 3...6 7 7 2.

LAT...LON 3335 8230 3337 8231 3347 8229 3355 8216
      3359 8213 3359 8210 3353 8201 3349 8199
      3347 8195 3341 8192 3341 8195 3338 8193
      3337 8195 3334 8194 3333 8190 3332 8232
TIME...MOT...LOC 0307Z 339DEG 15KT 3348 8211

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 31, 8:18 PM EDTSpecial Weather StatementCAESaluda42 min
Mar 31, 9:00 PM EDTSpecial Weather StatementCAEAiken, Edgefield, McCormick60 min
Mar 31, 9:09 PM EDTSevere Thunderstorm WarningCAEEdgefield, McCormick66 min
Mar 31, 9:29 PM EDTSevere Thunderstorm WarningCAEAiken38 min
Apr 1, 7:01 PM EDTSpecial Weather StatementCAEEdgefield44 min
Apr 1, 7:07 PM EDTSevere Thunderstorm WarningCAEEdgefield, McCormick38 min
Apr 1, 7:45 PM EDTSpecial Weather StatementCAEEdgefield45 min
Apr 1, 7:52 PM EDTSpecial Weather StatementCAENewberry38 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2012Severe 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.