Alert archive / Georgia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 516, NWS Atlanta, GA

December 22, 2011Gordon County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Dec 22, 2011, 5:13 PM EST for Gordon County, Georgia. It was in force for 32 min. 2 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
Dec 22, 2011, 5:13 PM EST (22:13 UTC)
Expired
Dec 22, 2011, 5:45 PM EST
In force
32 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon

County Gordon County, GA

The radar

The Northeast Alabama radar (KHTX), 126 km from the middle of the area, began a volume at 22:17 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

TimeReportWhereRemark
Dec 22, 5:25 PM ESTTSTM WND DMG4 S Calhoun, GARELAYED FROM CHEROKEE COUNTY EMA...MAJOR STRUCTURAL DAMAGE IN SOUTHERN GORDON COUNTY. MANY HOMES WITH DAMAGE AND ONE HOUSE AT LEAST WAS DESTROYED.
Dec 22, 5:25 PM ESTTSTM WND DMG5 S Calhoun, GABARTOW 911 RELAYS A REPORT OF I75 BLOCKED BY DOWNED TREES BETWEEN EXITS 306 AND 315.

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.

IssuedProductOfficeLasted
Dec 22, 3:20 PM ESTTornado WatchSPC6 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 10.2 hours before the alert went out and 132 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°0°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.

219 
WUUS52 KFFC 222213
SVRFFC
GAC129-222245-
/O.NEW.KFFC.SV.W.0516.111222T2213Z-111222T2245Z/

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

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  GORDON COUNTY IN NORTHWEST GEORGIA

* UNTIL 545 PM EST

* AT 509 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 SOUTH OF CALHOUN...MOVING
  NORTHEAST AT 60 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  SONORAVILLE...REDBUD...NICKELSVILLE...AUDUBON...FAIRMOUNT...RANGER
  AND OAKMAN.

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 AND AWAY FROM WINDOWS.

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 3462 8471 3460 8472 3458 8465 3441 8465
      3442 8473 3440 8474 3440 8495 3439 8497
      3451 8506 3462 8487 3461 8486 3461 8475
      3463 8473
TIME...MOT...LOC 2214Z 233DEG 52KT 3447 8491

$$
1 follow-up statement
514 
WWUS52 KFFC 222241
SVSFFC

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

GAC129-222249-
/O.EXP.KFFC.SV.W.0516.000000T0000Z-111222T2245Z/
GORDON GA-
541 PM EST THU DEC 22 2011

...THE SEVERE THUNDERSTORM WARNING FOR GORDON COUNTY WILL BE ALLOWED 
TO EXPIRE AT 545 PM EST...

AT 539 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE 
SEVERE THUNDERSTORM HAS MOVED EAST OF THE COUNTY. THEREFORE... THE 
WARNING WILL BE ALLOWED TO EXPIRE AT 545 PM EST. 

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 3462 8471 3460 8472 3458 8465 3441 8465
      3442 8473 3440 8474 3440 8495 3439 8497
      3451 8506 3462 8487 3461 8486 3461 8475
      3463 8473
TIME...MOT...LOC 2239Z 233DEG 52KT 3468 8456

$$

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, 5:15 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, 6:02 PM ESTSevere Thunderstorm WarningFFCHarris, Meriwether, Pike, Talbot, Upson43 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.