Alert archive / Georgia / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 17, NWS Columbia, SC

March 3, 2012Burke County, Georgia; Barnwell County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at Mar 3, 2012, 8:16 AM EST for Burke County, Georgia; Barnwell County, South Carolina. It was in force for 44 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 3, 2012, 8:16 AM EST (13:16 UTC)
Expired: Mar 3, 2012, 9:00 AM EST
In force: 44 min
Issued by: NWS Columbia, SC
Area: Storm-based polygon

Counties Burke County, GA, Barnwell County, SC

The radar

The Charleston,SC radar (KCLX), 83 km from the middle of the area, began a volume at 13:18 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
Mar 3, 4:39 AM EST	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 1.3 hours before the alert went out and 168 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: 279 J/kg
Mixed-layer CIN: -77 J/kg
Mixed-layer LCL: 685 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 205 m²/s²
0-3 km storm-relative helicity: 181 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

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

017 
WUUS52 KCAE 031316
SVRCAE
GAC033-SCC011-031400-
/O.NEW.KCAE.SV.W.0017.120303T1316Z-120303T1400Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
816 AM EST SAT MAR 3 2012

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BURKE COUNTY IN EAST CENTRAL GEORGIA
  SOUTHWESTERN BARNWELL COUNTY IN CENTRAL SOUTH CAROLINA

* UNTIL 900 AM EST

* AT 815 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 WAYNESBORO...AND MOVING
  EAST AT 50 MPH.

* SOME COMMUNITIES IN THE WARNING AREA INCLUDE SAVANNAH RIVER SITE...
  WAYNESBORO AND SARDIS

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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 AM EST
SATURDAY MORNING FOR EAST CENTRAL GEORGIA AND CENTRAL SOUTH CAROLINA.

&&

LAT...LON 3285 8216 3307 8228 3322 8181 3321 8180
      3322 8177 3320 8175 3327 8166 3332 8152
      3311 8127 3310 8137 3315 8155 3309 8160
      3304 8154 3297 8166 3293 8182 3294 8188
      3292 8196 3291 8208 3286 8213
TIME...MOT...LOC 1316Z 254DEG 43KT 3303 8196

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 3, 4:03 AM EST	Severe Thunderstorm Warning	CAE	Lincoln	61 min
Mar 3, 7:17 AM EST	Special Weather Statement	CAE	Burke, Richmond	58 min
Mar 3, 8:54 AM EST	Severe Thunderstorm Warning	CAE	Burke	51 min
Mar 3, 4:24 AM EST	Severe Thunderstorm Warning	CAE	Edgefield, Newberry, Saluda	60 min
Mar 3, 4:52 AM EST	Severe Thunderstorm Warning	CAE	Aiken, Fairfield, Lexington, Newberry, Richland	83 min
Mar 3, 5:23 AM EST	Severe Thunderstorm Warning	CAE	Calhoun, Fairfield, Kershaw, Lancaster, Lexington, Orangeburg and 2 more	67 min
Mar 3, 5:32 AM EST	Tornado Warning	CAE	Kershaw, Richland	13 min
Mar 3, 5:55 AM EST	Severe Thunderstorm Warning	CAE	Calhoun, Chesterfield, Clarendon, Kershaw, Lee, Orangeburg and 1 more	80 min
Mar 3, 9:44 AM EST	Severe Thunderstorm Warning	CAE	Bamberg, Orangeburg	46 min

Nearby

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