Alert archive / Georgia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 520, NWS Atlanta, GA

December 22, 20115 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Dec 22, 2011, 6:02 PM EST for 5 counties in Georgia. It was in force for 43 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
Dec 22, 2011, 6:02 PM EST (23:02 UTC)
Expired
Dec 22, 2011, 6:45 PM EST
In force
43 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon

Counties Harris County, GA, Meriwether County, GA, Pike County, GA, Talbot County, GA, Upson County, GA

The radar

The Atlanta radar (KFFC), 47 km from the middle of the area, began a volume at 23:02 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.

IssuedProductOfficeLasted
Dec 22, 3:20 PM ESTTornado WatchSPC6 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 11.0 hours before the alert went out and 45 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 2011-12-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 26 joules per kilogram.LCLLFCEL10008507005003002001001 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 2011-12-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 119 square meters per square second.1939587897Sfc1 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
26 J/kg
Mixed-layer CIN
-71 J/kg
Mixed-layer LCL
549 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
119 m²/s²
0-3 km storm-relative helicity
123 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.

141 
WUUS52 KFFC 222302
SVRFFC
GAC145-199-231-263-293-222345-
/O.NEW.KFFC.SV.W.0520.111222T2302Z-111222T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
602 PM EST THU DEC 22 2011

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN HARRIS COUNTY IN WEST CENTRAL GEORGIA
  SOUTHERN MERIWETHER COUNTY IN WEST CENTRAL GEORGIA
  SOUTHERN PIKE COUNTY IN WEST CENTRAL GEORGIA
  NORTHWESTERN TALBOT COUNTY IN WEST CENTRAL GEORGIA
  NORTHERN UPSON COUNTY IN WEST CENTRAL GEORGIA

* UNTIL 645 PM EST

* AT 558 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS UP TO 60
  MPH.  THIS STORM WAS LOCATED 6 MILES WEST OF WARM SPRINGS...MOVING
  EAST AT 40 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  SHILOH...MANCHESTER...WOODBURY...MOLENA...THOMASTON...MEANSVILLE...
  YATESVILLE AND THE ROCK.

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...LARGE HAIL OR SIGNIFICANT 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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EST THURSDAY EVENING
FOR NORTHERN GEORGIA.

&&

LAT...LON 3311 8426 3309 8424 3304 8425 3303 8427
      3299 8427 3299 8416 3294 8412 3287 8412
      3277 8481 3295 8484
TIME...MOT...LOC 2302Z 258DEG 35KT 3289 8474

$$
2 follow-up statements
709 
WWUS52 KFFC 222323
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
623 PM EST THU DEC 22 2011

GAC145-222333-
/O.CAN.KFFC.SV.W.0520.000000T0000Z-111222T2345Z/
HARRIS GA-
623 PM EST THU DEC 22 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN HARRIS COUNTY IS
CANCELLED...


IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL AFTER 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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EST THURSDAY EVENING
FOR NORTHERN GEORGIA.

LAT...LON 3294 8458 3311 8426 3308 8424 3304 8425
      3303 8427 3299 8427 3298 8417 3294 8412
      3287 8412 3283 8466
TIME...MOT...LOC 2323Z 258DEG 35KT 3293 8450

$$

GAC199-231-263-293-222345-
/O.CON.KFFC.SV.W.0520.000000T0000Z-111222T2345Z/
TALBOT GA-PIKE GA-MERIWETHER GA-UPSON GA-
623 PM EST THU DEC 22 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EST
FOR NORTHERN UPSON...SOUTHEASTERN MERIWETHER...SOUTHEASTERN PIKE AND
EXTREME NORTH CENTRAL TALBOT COUNTIES...

AT 621 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS UP
TO 60 MPH. THIS STORM WAS LOCATED NEAR CREST...MOVING EAST AT 40 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
SPREWELL BLUFF STATE PARK...ROWLAND...SUNNYSIDE...ATWATER...LIFSEY
SPRINGS...HANNAHS MILL...THOMASTON...MEANSVILLE...REDBONE
CROSSROADS...YATESVILLE AND THE ROCK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL AFTER 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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EST THURSDAY EVENING
FOR NORTHERN GEORGIA.

&&

LAT...LON 3294 8458 3311 8426 3308 8424 3304 8425
      3303 8427 3299 8427 3298 8417 3294 8412
      3287 8412 3283 8466
TIME...MOT...LOC 2323Z 258DEG 35KT 3293 8450

$$
805 
WWUS52 KFFC 222339
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
639 PM EST THU DEC 22 2011

GAC199-231-263-293-222349-
/O.EXP.KFFC.SV.W.0520.000000T0000Z-111222T2345Z/
TALBOT GA-PIKE GA-MERIWETHER GA-UPSON GA-
639 PM EST THU DEC 22 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN UPSON...SOUTHEASTERN
MERIWETHER...SOUTHEASTERN PIKE AND EXTREME NORTH CENTRAL TALBOT
COUNTIES EXPIRES AT 645 PM EST...

AT 635 PM EST...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF
PRODUCING DAMAGING WINDS UP TO 60 MPH. THIS STORM WAS LOCATED NEAR
ATWATER...MOVING EAST AT 40 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
MEANSVILLE...REDBONE CROSSROADS...YATESVILLE AND THE ROCK.

IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL AFTER 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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EST THURSDAY EVENING
FOR NORTHERN GEORGIA.

LAT...LON 3294 8458 3311 8426 3308 8424 3304 8425
      3303 8427 3299 8427 3298 8417 3294 8412
      3287 8412 3283 8466
TIME...MOT...LOC 2339Z 258DEG 35KT 3296 8432

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 21, 9:11 PM ESTDense Fog AdvisoryFFCBanks, Barrow, Bartow, Butts, Carroll, Catoosa and 47 more11 hr
Dec 22, 8:04 AM ESTDense Fog AdvisoryFFCBanks, Barrow, Bartow, Butts, Carroll, Catoosa and 47 more116 min
Dec 22, 3:51 PM ESTSpecial Weather StatementFFCChattooga, Floyd, Haralson, Polk39 min
Dec 22, 4:14 PM ESTSpecial Weather StatementFFCCarroll61 min
Dec 22, 4:26 PM ESTSevere Thunderstorm WarningFFCHaralson, Polk32 min
Dec 22, 4:34 PM ESTSpecial Weather StatementFFCTowns, Union26 min
Dec 22, 4:37 PM ESTSpecial Weather StatementFFCBartow, Catoosa, Chattooga, Floyd, Gordon, Murray and 2 more53 min
Dec 22, 4:39 PM ESTSpecial Weather StatementFFCHeard, Troup66 min
Dec 22, 4:52 PM ESTSevere Thunderstorm WarningFFCBartow, Floyd, Gordon23 min
Dec 22, 4:56 PM ESTSpecial Weather StatementFFCPaulding34 min
Dec 22, 5:13 PM ESTSevere Thunderstorm WarningFFCGordon32 min
Dec 22, 5:15 PM ESTSevere Thunderstorm WarningFFCCarroll, Coweta, Douglas, Fulton, Heard45 min
Dec 22, 5:23 PM ESTSevere Thunderstorm WarningFFCGilmer, Murray, Pickens25 min
Dec 22, 5:29 PM ESTSpecial Weather StatementFFCCherokee, Dawson, Forsyth, Pickens31 min
Dec 22, 5:32 PM ESTSevere Thunderstorm WarningFFCCoweta, Fayette, Meriwether, Troup43 min
Dec 22, 5:36 PM ESTSpecial Weather StatementFFCCobb24 min
Dec 22, 5:40 PM ESTSpecial Weather StatementFFCMeriwether35 min
Dec 22, 5:44 PM ESTTornado WarningFFCCoweta, Fayette, Meriwether46 min
Dec 22, 6:08 PM ESTSpecial Weather StatementFFCDeKalb, Forsyth, Fulton, Gwinnett, Hall37 min
Dec 22, 6:11 PM ESTSevere Thunderstorm WarningFFCClayton, Fayette, Henry, Pike, Spalding49 min
Dec 22, 6:35 PM ESTSpecial Weather StatementFFCMarion, Schley, Taylor25 min
Dec 22, 6:35 PM ESTSevere Thunderstorm WarningFFCHall27 min
Dec 22, 6:43 PM ESTSpecial Weather StatementFFCLamar, Monroe, Upson47 min
Dec 22, 6:58 PM ESTSpecial Weather StatementFFCBanks, Barrow, Clarke, Gwinnett, Jackson, Madison and 1 more47 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2011Every severe thunderstorm warning in 2011

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.