Alert archive / Georgia / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 209, NWS Columbia, SC

July 30, 2012Burke County, Richmond County, Georgia; Aiken County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at Jul 30, 2012, 8:24 PM EDT for Burke County, Richmond County, Georgia; Aiken County, South Carolina. It was in force for 23 min. 1 report 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: Jul 30, 2012, 8:24 PM EDT (00:24 UTC)
Expired: Jul 30, 2012, 8:47 PM EDT
In force: 23 min
Issued by: NWS Columbia, SC
Area: Storm-based polygon

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

The radar

The Charleston,SC radar (KCLX), 122 km from the middle of the area, began a volume at 00:24 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

Time	Report	Where	Remark
Jul 30, 8:42 PM EDT	TSTM WND DMG	3 E Fort Gordon, GA	RICHMOND COUNTY DISPATCH REPORTED A TREE AND LARGE LIMBS DOWN AT A RESIDENCE ON CAIRO DR.

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 00:00Z, 0.4 hours before the alert went out and 205 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: 1895 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 635 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 31 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

551 
WUUS52 KCAE 310024
SVRCAE
GAC033-245-SCC003-310130-
/O.NEW.KCAE.SV.W.0209.120731T0024Z-120731T0130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
824 PM EDT MON JUL 30 2012

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  RICHMOND COUNTY IN EAST CENTRAL GEORGIA
  NORTHWESTERN BURKE COUNTY IN EAST CENTRAL GEORGIA
  WESTERN AIKEN COUNTY IN CENTRAL SOUTH CAROLINA

* UNTIL 930 PM EDT

* AT 821 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED NEAR AUGUSTA...AND MOVING
  SOUTHWEST AT 20 MPH.

* SOME COMMUNITIES IN THE WARNING AREA INCLUDE HEPHZIBAH...FORT
  GORDON AND AUGUSTA

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 3298 8216 3309 8229 3323 8224 3326 8226
      3331 8235 3353 8200 3342 8183
TIME...MOT...LOC 0024Z 038DEG 18KT 3340 8198

$$

HC

1 follow-up statement

730 
WWUS52 KCAE 310047
SVSCAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA SC
847 PM EDT MON JUL 30 2012

GAC033-245-SCC003-310058-
/O.CAN.KCAE.SV.W.0209.000000T0000Z-120731T0130Z/
RICHMOND GA-BURKE GA-AIKEN SC-
847 PM EDT MON JUL 30 2012

...THE SEVERE THUNDERSTORM WARNING FOR AIKEN...BURKE AND RICHMOND
COUNTIES 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 3298 8216 3309 8229 3323 8224 3326 8226
      3331 8235 3353 8200 3342 8183
TIME...MOT...LOC 0048Z 038DEG 18KT 3330 8207

$$

HC

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 31, 1:59 PM EDT	Special Weather Statement	CAE	Barnwell	61 min
Jul 31, 2:07 PM EDT	Severe Thunderstorm Warning	CAE	Aiken, Bamberg, Barnwell, Orangeburg	35 min
Jul 31, 4:35 PM EDT	Areal Flood Advisory	CAE	Lexington, Richland	55 min
Jul 31, 5:02 PM EDT	Flash Flood Warning	CAE	Lexington, Richland	34 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.