Alert archive / Georgia / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 348, NWS Atlanta, GA

December 10, 20124 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Dec 10, 2012, 4:02 PM EST for 4 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 10, 2012, 4:02 PM EST (21:02 UTC)
Expired
Dec 10, 2012, 4:45 PM EST
In force
43 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon

Counties Greene County, GA, Hancock County, GA, Morgan County, GA, Putnam County, GA

The radar

The Robins AFB radar (KJGX), 95 km from the middle of the area, began a volume at 21:02 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 nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 9.0 hours before the alert went out and 126 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 2012-12-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2012-12-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 170 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
677 m above ground
0-6 km bulk shear
70 kt
0-1 km storm-relative helicity
170 m²/s²
0-3 km storm-relative helicity
156 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.

434 
WUUS52 KFFC 102102
SVRFFC
GAC133-141-211-237-102145-
/O.NEW.KFFC.SV.W.0348.121210T2102Z-121210T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
402 PM EST MON DEC 10 2012

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN PUTNAM COUNTY IN CENTRAL GEORGIA
  GREENE COUNTY IN EAST CENTRAL GEORGIA
  NORTHWESTERN HANCOCK COUNTY IN EAST CENTRAL GEORGIA
  SOUTHEASTERN MORGAN COUNTY IN NORTH CENTRAL GEORGIA

* UNTIL 445 PM EST

* AT 358 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS UP
  TO 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM
  MADISON TO 9 MILES SOUTH OF MADISON TO 9 MILES WEST OF EATONTON...
  MOVING EAST AT 35 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  BUCKHEAD...PHOENIX...REYNOLDS PLANTATION...GREENSBORO...SILOAM...
  UNION POINT AND WHITE PLAINS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3362 8298 3362 8300 3360 8299 3357 8301
      3349 8298 3347 8301 3345 8299 3326 8306
      3331 8354 3344 8353 3345 8357 3360 8357
      3367 8295
TIME...MOT...LOC 2102Z 269DEG 31KT 3354 8343 3347 8342
          3330 8350

$$
2 follow-up statements
301 
WWUS52 KFFC 102127
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
427 PM EST MON DEC 10 2012

GAC211-102136-
/O.CAN.KFFC.SV.W.0348.000000T0000Z-121210T2145Z/
MORGAN GA-
427 PM EST MON DEC 10 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN MORGAN COUNTY IS
CANCELLED...

THE SEVERE STORM HAS EXITED THE WARNED AREA.  HEAVY RAIN AND 
OCCASIONAL LIGHTNING ARE STILL POSSIBLE ACROSS MORGAN COUNTY OVER 
THE NEXT COUPLE OF HOURS.

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 3362 8298 3362 8300 3360 8299 3357 8301
      3348 8299 3347 8301 3345 8299 3334 8304
      3338 8336 3348 8332 3349 8328 3354 8327
      3360 8335 3362 8336 3367 8295
TIME...MOT...LOC 2126Z 258DEG 36KT 3363 8314 3356 8313
          3339 8321

$$

GAC133-141-237-102145-
/O.CON.KFFC.SV.W.0348.000000T0000Z-121210T2145Z/
PUTNAM GA-GREENE GA-HANCOCK GA-
427 PM EST MON DEC 10 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EST
FOR NORTH CENTRAL HANCOCK...GREENE AND NORTHEASTERN PUTNAM
COUNTIES...

AT 422 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS UP TO 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM GREENSBORO TO PHOENIX...MOVING EAST AT 40 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
VEAZEY...LIBERTY...UNION POINT...SILOAM...JACKSONVILLE...WHITE PLAINS
AND DANIEL SPRINGS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3362 8298 3362 8300 3360 8299 3357 8301
      3348 8299 3347 8301 3345 8299 3334 8304
      3338 8336 3348 8332 3349 8328 3354 8327
      3360 8335 3362 8336 3367 8295
TIME...MOT...LOC 2126Z 258DEG 36KT 3363 8314 3356 8313
          3339 8321

$$
854 
WWUS52 KFFC 102138
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
438 PM EST MON DEC 10 2012

GAC133-141-237-102146-
/O.EXP.KFFC.SV.W.0348.000000T0000Z-121210T2145Z/
PUTNAM GA-GREENE GA-HANCOCK GA-
438 PM EST MON DEC 10 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL HANCOCK...GREENE
AND NORTHEASTERN PUTNAM COUNTIES EXPIRES AT 445 PM EST...

AT 431 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THAT THE THUNDERSTORM THAT PROMPTED THE WARNING HAD WEAKEN BELOW 
SEVERE LIMITS.  THE WARNING WILL BE ALLOWED TO EXPIRE AT 445 PM EST. 
STRONG STORMS WERE LOCATED ALONG A LINE EXTENDING FROM UNION POINT 
TO SILOAM TO LIBERTY...MOVING EAST AT 40 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WHITE
PLAINS AND DANIEL SPRINGS.

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 3362 8298 3362 8300 3360 8299 3357 8301
      3348 8299 3347 8301 3345 8299 3334 8304
      3338 8336 3348 8332 3349 8328 3354 8327
      3360 8335 3362 8336 3367 8295
TIME...MOT...LOC 2136Z 258DEG 36KT 3364 8302 3357 8301
          3340 8309

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 10, 2:57 AM ESTWind AdvisoryFFCCatoosa, Chattooga, Dade, Fannin, Gilmer, Lumpkin and 6 more16 hr
Dec 10, 5:12 AM ESTSpecial Weather StatementFFCCatoosa, Chattooga, Dade, Walker63 min
Dec 10, 6:13 AM ESTSpecial Weather StatementFFCCatoosa, Murray, Whitfield47 min
Dec 10, 6:29 AM ESTSpecial Weather StatementFFCChattooga, Floyd31 min
Dec 10, 6:55 AM ESTSpecial Weather StatementFFCChattooga, Floyd35 min
Dec 10, 8:15 AM ESTDense Fog AdvisoryFFCEmanuel, Johnson, Laurens, Montgomery, Telfair, Toombs and 2 more105 min
Dec 10, 11:24 AM ESTSpecial Weather StatementFFCCarroll, Heard51 min
Dec 10, 11:50 AM ESTSevere Thunderstorm WarningFFCCarroll, Haralson25 min
Dec 10, 12:06 PM ESTSpecial Weather StatementFFCForsyth39 min
Dec 10, 12:12 PM ESTSpecial Weather StatementFFCCoweta, Douglas, Fulton, Heard48 min
Dec 10, 3:26 PM ESTSpecial Weather StatementFFCPike49 min
Dec 10, 3:29 PM ESTSpecial Weather StatementFFCMarion31 min
Dec 10, 3:58 PM ESTSpecial Weather StatementFFCMarion47 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.