Alert archive / Georgia / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 31, NWS Atlanta, GA

February 24, 20125 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Feb 24, 2012, 8:28 AM EST for 5 counties in Georgia. It was in force for 32 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
Feb 24, 2012, 8:28 AM EST (13:28 UTC)
Expired
Feb 24, 2012, 9:00 AM EST
In force
32 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon

Counties Coweta County, GA, Fayette County, GA, Meriwether County, GA, Pike County, GA, Spalding County, GA

The radar

The Atlanta radar (KFFC), 21 km from the middle of the area, began a volume at 13:30 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 1.5 hours before the alert went out and 23 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, Peachtre/Fal Fld, GA at 12:00Z on 2012-02-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1231 joules per kilogram.LCLEL10008507005003002001001 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, Peachtre/Fal Fld, GA at 12:00Z on 2012-02-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 163 square meters per square second.1939587897117Sfc1 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
1231 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
542 m above ground
0-6 km bulk shear
83 kt
0-1 km storm-relative helicity
163 m²/s²
0-3 km storm-relative helicity
306 m²/s²
Significant tornado parameter
1.3
Supercell composite
4.7

Open this sounding in Storm Lab

The text

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

623 
WUUS52 KFFC 241328
SVRFFC
GAC077-113-199-231-255-241400-
/O.NEW.KFFC.SV.W.0031.120224T1328Z-120224T1400Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
828 AM EST FRI FEB 24 2012

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EXTREME SOUTH CENTRAL FAYETTE COUNTY IN NORTH CENTRAL GEORGIA
  SOUTHEASTERN COWETA COUNTY IN WEST CENTRAL GEORGIA
  NORTHERN MERIWETHER COUNTY IN WEST CENTRAL GEORGIA
  NORTHWESTERN PIKE COUNTY IN WEST CENTRAL GEORGIA
  SOUTHWESTERN SPALDING COUNTY IN WEST CENTRAL GEORGIA

* UNTIL 900 AM EST

* AT 826 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS UP TO 60
  MPH.  THIS STORM WAS LOCATED 12 MILES WEST OF GAY...MOVING EAST AT
  40 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  HARALSON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR HAS INDICATED ROTATION WITHIN THIS STORM. ALTHOUGH
CURRENT DATA DOES NOT INDICATE THE EXISTENCE OF A TORNADO...A TORNADO
MAY STILL DEVELOP. IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO
A PLACE OF SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR
SMALL INTERIOR ROOM.

IF YOU SEE WIND DAMAGE...HAIL OR FLOODING...WAIT UNTIL THE STORM HAS
PASSED...AND THEN CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1 8
6 6 7 6 3 4 4 6 6. YOU CAN ALSO TWEET YOUR REPORT USING HASHTAG GAWX.

&&

LAT...LON 3330 8447 3311 8435 3305 8478 3312 8481
TIME...MOT...LOC 1328Z 251DEG 34KT 3312 8475

$$

The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 24, 7:44 AM ESTSpecial Weather StatementFFCMorgan, Newton31 min
Feb 24, 8:14 AM ESTSpecial Weather StatementFFCMeriwether31 min
Feb 24, 8:33 AM ESTSpecial Weather StatementFFCHenry, Newton27 min
Feb 24, 8:45 AM ESTSpecial Weather StatementFFCTroup45 min
Feb 24, 8:49 AM ESTSevere Thunderstorm WarningFFCHarris, Meriwether, Troup26 min
Feb 24, 9:01 AM ESTSpecial Weather StatementFFCButts, Spalding44 min
Feb 24, 9:08 AM ESTSpecial Weather StatementFFCGreene, Morgan37 min
Feb 24, 9:15 AM ESTSpecial Weather StatementFFCMeriwether30 min
Feb 24, 9:23 AM ESTTornado WarningFFCButts, Henry, Jasper, Newton37 min
Feb 24, 9:28 AM ESTTornado WarningFFCGreene, Oglethorpe, Taliaferro, Wilkes32 min
Feb 24, 9:40 AM ESTTornado WarningFFCGreene, Jasper, Morgan, Putnam50 min
Feb 24, 9:45 AM ESTSpecial Weather StatementFFCButts, Lamar, Meriwether, Pike30 min
Feb 24, 10:10 AM ESTSpecial Weather StatementFFCJasper35 min
Feb 24, 10:14 AM ESTTornado WarningFFCGreene, Hancock, Taliaferro, Warren, Wilkes46 min
Feb 24, 10:30 AM ESTSevere Thunderstorm WarningFFCBaldwin, Jasper, Jones, Monroe, Putnam30 min
Feb 24, 10:32 AM ESTSpecial Weather StatementFFCLamar, Pike28 min
Feb 24, 10:39 AM ESTTornado WarningFFCGreene, Hancock, Morgan, Putnam, Taliaferro36 min
Feb 24, 10:53 AM ESTSevere Thunderstorm WarningFFCButts, Jasper, Jones, Monroe22 min
Feb 24, 11:06 AM ESTSevere Thunderstorm WarningFFCBaldwin, Jasper, Jones, Putnam24 min
Feb 24, 11:06 AM ESTTornado WarningFFCHancock, Taliaferro, Warren24 min
Feb 24, 11:10 AM ESTSpecial Weather StatementFFCClayton, Coweta, Fayette, Heard, Troup35 min
Feb 24, 11:25 AM ESTSpecial Weather StatementFFCMeriwether, Troup35 min
Feb 24, 11:28 AM ESTSevere Thunderstorm WarningFFCBaldwin, Greene, Hancock, Putnam32 min
Feb 24, 11:39 AM ESTSevere Thunderstorm WarningFFCGreene, Hancock, Taliaferro, Warren36 min
Feb 24, 11:56 AM ESTSpecial Weather StatementFFCFayette, Harris, Henry, Meriwether, Pike, Rockdale and 3 more34 min
Feb 24, 12:06 PM ESTSevere Thunderstorm WarningFFCGlascock, Warren24 min
Feb 24, 12:19 PM ESTSpecial Weather StatementFFCChattahoochee, Muscogee41 min
Feb 24, 12:30 PM ESTSpecial Weather StatementFFCBibb, Butts, Clarke, Greene, Jasper, Jones and 10 more30 min
Feb 24, 12:38 PM ESTSpecial Weather StatementFFCCoweta, Heard37 min
Feb 24, 12:58 PM ESTSpecial Weather StatementFFCChattahoochee, Crawford, Greene, Jasper, Lamar, Marion and 7 more47 min
Feb 24, 1:37 PM ESTSpecial Weather StatementFFCBaldwin, Bibb, Crawford, Greene, Hancock, Houston and 10 more23 min
Feb 24, 2:04 PM ESTSpecial Weather StatementFFCWarren26 min
Feb 24, 2:36 PM ESTSpecial Weather StatementFFCBleckley, Crisp, Dodge, Pulaski, Wilcox24 min
Feb 24, 2:57 PM ESTSpecial Weather StatementFFCCrisp, Dodge, Johnson, Laurens, Pulaski, Wilcox33 min
Feb 24, 3:24 PM ESTSpecial Weather StatementFFCDodge, Emanuel, Johnson, Laurens, Montgomery, Telfair and 4 more51 min

Nearby

Severe Thunderstorm Warnings in Georgia, 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.