Alert archive / Georgia / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 5, NWS Columbia, SC

February 24, 2012Columbia County, Richmond County, Georgia; Aiken County, Edgefield County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at Feb 24, 2012, 12:28 PM EST for Columbia County, Richmond County, Georgia; Aiken County, Edgefield County, South Carolina. It was in force for 32 min. 14 reports 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: Feb 24, 2012, 12:28 PM EST (17:28 UTC)
Expired: Feb 24, 2012, 1:00 PM EST
In force: 32 min
Issued by: NWS Columbia, SC
Area: Storm-based polygon

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

The radar

The Columbia radar (KCAE), 69 km from the middle of the area, began a volume at 17:29 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
Feb 24, 12:30 PM EST	HAIL 1	Grovetown, GA
Feb 24, 12:32 PM EST	TSTM WND GST 0	8 Sw Aiken, SC	62 MPH WIND GUST IN LANGLEY REPORTED BY SKYWARN
Feb 24, 12:40 PM EST	TSTM WND DMG	4 Ne Augusta, SC	TREES REPORTED DOWN IN NORTH AUGUSTA.
Feb 24, 12:40 PM EST	TSTM WND DMG	4 Sw Aiken, SC	TREES DOWN ON PINE LOG ROAD SOUTH AIKEN
Feb 24, 12:40 PM EST	TSTM WND DMG	9 Sw Aiken, SC	TREE ON MOBILE HOME ON BASS LAKE ROAD BURNETTETOWN REPORTED BY SKYWARN.
Feb 24, 12:40 PM EST	TSTM WND GST 60	Augusta, GA	NUMEROUS TREES DOWN AND DIME SIZE HAIL AT ALEXANDER DRIVE AND WASHINGTON ROAD.
Feb 24, 12:40 PM EST	TSTM WND GST 80	Augusta, GA	WJBF REPORTS ESTIMATED 80 TO 90 MPH GUST ALONG WITH GOLF BALL SIZE HAIL.
Feb 24, 12:40 PM EST	HAIL 1.25	1 N Augusta, GA
Feb 24, 12:41 PM EST	HAIL 1	Augusta, GA	MEDIA REPORTS ESTIMATED ONE INCH HAIL IN NORTH AUGUSTA.
Feb 24, 12:45 PM EST	TSTM WND DMG	North Augusta, SC	SHINGLES OFF BUILDING NEAR LANNEY WALKER BLVD AND GORDON HIGHWAY ESTIMATED WIND GUSTS TO 60 MPH
Feb 24, 12:45 PM EST	HAIL 1	North Augusta, SC	AT LANNEY WALKER BLVD AND GORDON HIGHWAY
Feb 24, 12:48 PM EST	TSTM WND DMG	5 W Aiken, SC	TREES DOWN IN GRANITVILLE. WIND ESTIMATED AT 70 MPH.
Feb 24, 12:48 PM EST	HAIL 1.75	5 W Aiken, SC	GOLF BALL SIZE HAIL REPORTED IN GRANITVILLE.
Feb 24, 1:07 PM EST	TORNADO	5 N Wagener, SC	NWS STORM SURVEY HAS CONFIRMED A TORNADO TOUCHED DOWN NEAER THE LEXINGTON/AIKEN COUNTY LINE NEAR THE INTERSECTION OF SAND DAM AND CLINE TAYLOR ROADS JUST SOUTH OF THE LEXINGTON COUNTY LINE. THE TORNADO CONTINUED MOVING EAST NORTH EAST INTO LEXINGTON COUNTY TO

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

Issued	Product	Office	Lasted
Feb 24, 8:48 AM EST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 5.5 hours before the alert went out and 186 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: 817 J/kg
Mixed-layer CIN: -120 J/kg
Mixed-layer LCL: 606 m above ground
0-6 km bulk shear: 70 kt
0-1 km storm-relative helicity: 350 m²/s²
0-3 km storm-relative helicity: 365 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 9.4

Open this sounding in Storm Lab

The text

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

530 
WUUS52 KCAE 241728
SVRCAE
GAC073-245-SCC003-037-241800-
/O.NEW.KCAE.SV.W.0005.120224T1728Z-120224T1800Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
1228 PM EST FRI FEB 24 2012

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

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

* UNTIL 100 PM EST

* AT 1225 PM EST...THE PUBLIC REPORTED A SEVERE THUNDERSTORM CAPABLE
  OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
  LOCATED NEAR GROVETOWN...AND MOVING EAST AT 70 MPH. THIS STORM HAS
  TAKEN DOWN SOME TREES IN MCDUFFIE COUNTY.

* SOME COMMUNITIES IN THE WARNING AREA INCLUDE MARTINEZ...
  GROVETOWN...FORT GORDON...EVANS...AUGUSTA...NORTH AUGUSTA...
  CLEARWATER...BELVEDERE...AIKEN AND GLOVERVILLE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED... ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

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 TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM EST FRIDAY AFTERNOON
FOR EAST CENTRAL GEORGIA AND CENTRAL SOUTH CAROLINA.

&&

LAT...LON 3360 8215 3359 8213 3363 8210 3382 8167
      3381 8165 3387 8156 3381 8150 3379 8145
      3373 8141 3372 8134 3364 8120 3326 8227
      3331 8234
TIME...MOT...LOC 1727Z 250DEG 61KT 3348 8213

$$

SJN

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 24, 4:18 AM EST	Lake Wind Advisory	CAE	Burke, Columbia, Lincoln, McDuffie, Richmond	38 hr
Feb 24, 12:06 PM EST	Severe Thunderstorm Warning	CAE	McDuffie	24 min
Feb 24, 12:20 PM EST	Severe Thunderstorm Warning	CAE	Columbia	25 min
Feb 24, 1:01 PM EST	Severe Thunderstorm Warning	CAE	Aiken, Calhoun, Lexington, Orangeburg, Richland	29 min
Feb 24, 1:07 PM EST	Tornado Warning	CAE	Calhoun, Lexington	31 min
Feb 24, 1:33 PM EST	Areal Flood Advisory	CAE	Aiken, Lexington, Richland	117 min
Feb 24, 1:33 PM EST	Severe Thunderstorm Warning	CAE	Calhoun, Clarendon, Kershaw, Lee, Orangeburg, Richland and 1 more	42 min
Feb 24, 1:43 PM EST	Tornado Warning	CAE	Calhoun, Clarendon, Sumter	17 min
Feb 24, 2:59 PM EST	Areal Flood Advisory	CAE	Aiken, Edgefield, Lexington, Saluda	2 hr
Feb 24, 3:37 PM EST	Areal Flood Advisory	CAE	Aiken, Lexington, Richland	53 min
Feb 24, 5:16 PM EST	Special Weather Statement	CAE	Clarendon	29 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.