Alert archive / South Carolina / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 215, NWS Columbia, SC

August 2, 2012Aiken County, Barnwell County, South Carolina; Burke County, Richmond County, Georgia

NWS Columbia, SC issued this severe thunderstorm warning at Aug 2, 2012, 2:51 PM EDT for Aiken County, Barnwell County, South Carolina; Burke County, Richmond County, Georgia. It was in force for 39 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: Aug 2, 2012, 2:51 PM EDT (18:51 UTC)
Expired: Aug 2, 2012, 3:30 PM EDT
In force: 39 min
Issued by: NWS Columbia, SC
Area: Storm-based polygon

Counties Burke County, GA, Richmond County, GA, Aiken County, SC, Barnwell County, SC

The radar

The Charleston,SC radar (KCLX), 94 km from the middle of the area, began a volume at 18:54 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 2, 2:33 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 6.9 hours before the alert went out and 167 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1922 J/kg
Mixed-layer CIN: -45 J/kg
Mixed-layer LCL: 1137 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 6 m²/s²
0-3 km storm-relative helicity: 14 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.

574 
WUUS52 KCAE 021851
SVRCAE
GAC033-245-SCC003-011-021930-
/O.NEW.KCAE.SV.W.0215.120802T1851Z-120802T1930Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
251 PM EDT THU AUG 2 2012

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN RICHMOND COUNTY IN EAST CENTRAL GEORGIA
  NORTHEASTERN BURKE COUNTY IN EAST CENTRAL GEORGIA
  SOUTHWESTERN AIKEN COUNTY IN CENTRAL SOUTH CAROLINA
  WESTERN BARNWELL COUNTY IN CENTRAL SOUTH CAROLINA

* UNTIL 330 PM EDT

* AT 247 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 NEAR
  JACKSON...OR NEAR SAVANNAH RIVER SITE...AND MOVING SOUTHEAST AT 10
  MPH.

* SOME COMMUNITIES IN THE WARNING AREA INCLUDE SAVANNAH RIVER SITE...
  HEPHZIBAH...NEW ELLENTON...JACKSON...CLEARWATER...AIKEN AND
  GLOVERVILLE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT
THURSDAY EVENING FOR EAST CENTRAL GEORGIA AND CENTRAL SOUTH CAROLINA.

&&

LAT...LON 3331 8216 3358 8183 3353 8167 3329 8142
      3315 8154 3310 8160 3309 8159 3301 8166
TIME...MOT...LOC 1851Z 304DEG 9KT 3329 8173

$$

HC

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 2, 1:38 PM EDT	Special Weather Statement	CAE	Lexington	52 min
Aug 2, 1:45 PM EDT	Severe Thunderstorm Warning	CAE	Lexington	45 min
Aug 2, 1:48 PM EDT	Severe Thunderstorm Warning	CAE	Bamberg, Barnwell, Orangeburg	57 min
Aug 2, 2:29 PM EDT	Areal Flood Advisory	CAE	Bamberg, Barnwell, Orangeburg	2 hr
Aug 2, 2:46 PM EDT	Severe Thunderstorm Warning	CAE	Calhoun, Orangeburg	59 min
Aug 2, 3:19 PM EDT	Severe Thunderstorm Warning	CAE	Calhoun, Clarendon, Orangeburg, Richland, Sumter	56 min
Aug 2, 3:46 PM EDT	Severe Thunderstorm Warning	CAE	Calhoun, Clarendon, Orangeburg	44 min
Aug 2, 4:18 PM EDT	Severe Thunderstorm Warning	CAE	Calhoun, Clarendon, Richland, Sumter	57 min
Aug 2, 5:10 PM EDT	Severe Thunderstorm Warning	CAE	Clarendon, Kershaw, Lee, Sumter	50 min
Aug 2, 5:32 PM EDT	Areal Flood Advisory	CAE	Edgefield, McCormick	58 min
Aug 2, 5:33 PM EDT	Severe Thunderstorm Warning	CAE	Kershaw, Richland	57 min
Aug 2, 6:08 PM EDT	Areal Flood Advisory	CAE	Richland	52 min
Aug 2, 7:04 PM EDT	Special Weather Statement	CAE	Chesterfield	56 min
Aug 2, 7:33 PM EDT	Severe Thunderstorm Warning	CAE	Fairfield	42 min
Aug 2, 7:52 PM EDT	Areal Flood Advisory	CAE	Fairfield	53 min
Aug 2, 1:59 PM EDT	Severe Thunderstorm Warning	CAE	Burke	46 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2012 Severe Thunderstorm Warnings in Georgia, 2012 Every 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.