Alert archive / Georgia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 107, NWS Atlanta, GA

July 12, 20216 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 12, 2021, 6:11 PM EDT for 6 counties in Georgia. It was in force for 34 min. 4 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
Jul 12, 2021, 6:11 PM EDT (22:11 UTC)
Expired
Jul 12, 2021, 6:45 PM EDT
In force
34 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

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

The radar

The Atlanta radar (KFFC), 35 km from the middle of the area, began a volume at 22:10 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
Jul 12, 6:15 PM EDTTSTM WND DMG1 Nw Warm Springs, GATREE DOWN
Jul 12, 6:25 PM EDTTSTM WND DMG3 Nnw Manchester, GATREES DOWN
Jul 12, 6:25 PM EDTTSTM WND DMG3 Wnw Woodbury, GATREES DOWN
Jul 12, 6:30 PM EDTTSTM WND DMGGay, GATREE DOWN

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

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 10.2 hours before the alert went out and 38 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 2021-07-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 39 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 2021-07-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 square meters per square second.1939Sfc1 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
39 J/kg
Mixed-layer CIN
-126 J/kg
Mixed-layer LCL
1169 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
66 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

370 
WUUS52 KFFC 122211
SVRFFC
GAC145-199-231-263-285-293-122245-
/O.NEW.KFFC.SV.W.0107.210712T2211Z-210712T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
611 PM EDT Mon Jul 12 2021

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Meriwether County in west central Georgia...
  Pike County in west central Georgia...
  Northwestern Upson County in west central Georgia...
  Eastern Troup County in west central Georgia...
  Northwestern Talbot County in west central Georgia...
  Northern Harris County in west central Georgia...

* Until 645 PM EDT.

* At 609 PM EDT, severe thunderstorms were located along a line
  extending from near Woodland to Durand to near Whitesville-Pine
  Lake, moving northeast at 35 mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  LaGrange, Thomaston, Zebulon, Hamilton, Greenville, Manchester,
  Hogansville, Pine Mountain, Woodbury, Luthersville, Warm Springs,
  Woodland, Molena, Williamson, Meansville, Lone Oak, Gay, Sunset
  Village, F.D. Roosevelt State Park and Mountville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

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 or tweet us your report at NWSATLANTA.

&&

LAT...LON 3319 8497 3321 8486 3319 8486 3322 8485
      3322 8451 3319 8450 3321 8445 3321 8441
      3311 8425 3301 8427 3268 8449 3280 8480
      3278 8513 3281 8517
TIME...MOT...LOC 2209Z 208DEG 32KT 3277 8453 3292 8477 3284 8510 

HAIL...0.75IN
WIND...60MPH
 
$$
2 follow-up statements
338 
WWUS52 KFFC 122227
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
627 PM EDT Mon Jul 12 2021

GAC145-263-122237-
/O.CAN.KFFC.SV.W.0107.000000T0000Z-210712T2245Z/
Talbot GA-Harris GA-
627 PM EDT Mon Jul 12 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN TALBOT AND
NORTHERN HARRIS COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area, therefore, the warning has been cancelled.

LAT...LON 3319 8497 3321 8486 3319 8486 3322 8485
      3322 8451 3319 8450 3321 8441 3311 8425
      3301 8427 3281 8440 3284 8442 3283 8445
      3286 8449 3288 8448 3288 8450 3285 8457
      3284 8470 3287 8475 3287 8514
TIME...MOT...LOC 2227Z 206DEG 33KT 3291 8446 3306 8470 3298 8503 

$$

GAC199-231-285-293-122245-
/O.CON.KFFC.SV.W.0107.000000T0000Z-210712T2245Z/
Meriwether GA-Pike GA-Upson GA-Troup GA-
627 PM EDT Mon Jul 12 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR MERIWETHER...PIKE...NORTHWESTERN UPSON AND EASTERN TROUP
COUNTIES...

At 627 PM EDT, severe thunderstorms were located along a line
extending from Crest to near Greenville to Smiths Crossroad, moving
northeast at 40 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
LaGrange, Thomaston, Zebulon, Greenville, Manchester, Hogansville,
Woodbury, Luthersville, Warm Springs, Molena, Williamson, Meansville,
Lone Oak, Gay, Sunset Village, Mountville, Atwater, Hilltop, Louise
and Odessadale.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3319 8497 3321 8486 3319 8486 3322 8485
      3322 8451 3319 8450 3321 8441 3311 8425
      3301 8427 3281 8440 3284 8442 3283 8445
      3286 8449 3288 8448 3288 8450 3285 8457
      3284 8470 3287 8475 3287 8514
TIME...MOT...LOC 2227Z 206DEG 33KT 3291 8446 3306 8470 3298 8503 

HAIL...<.75IN
WIND...60MPH
 
$$
572 
WWUS52 KFFC 122240
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
640 PM EDT Mon Jul 12 2021

GAC199-231-285-293-122249-
/O.EXP.KFFC.SV.W.0107.000000T0000Z-210712T2245Z/
Meriwether GA-Pike GA-Upson GA-Troup GA-
640 PM EDT Mon Jul 12 2021

...THE SEVERE THUNDERSTORM WARNING FOR MERIWETHER...PIKE...
NORTHWESTERN UPSON AND EASTERN TROUP COUNTIES WILL EXPIRE AT 645 PM
EDT...
            
The storms which prompted the warning are weakening below severe 
limits, and therefore, the warning will be allowed to expire. 
However, gusty winds and heavy rain are still possible with these 
thunderstorms.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Peachtree City.

LAT...LON 3319 8497 3321 8486 3319 8486 3322 8485
      3322 8451 3319 8450 3321 8441 3311 8425
      3301 8427 3281 8440 3284 8442 3283 8445
      3286 8449 3288 8448 3288 8450 3285 8457
      3284 8470 3287 8475 3287 8514
TIME...MOT...LOC 2239Z 208DEG 32KT 3300 8440 3315 8464 3307 8497 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 12, 2:35 PM EDTSpecial Weather StatementFFCHeard40 min
Jul 12, 2:48 PM EDTSpecial Weather StatementFFCGwinnett42 min
Jul 12, 3:04 PM EDTSpecial Weather StatementFFCClayton, DeKalb41 min
Jul 12, 3:08 PM EDTSpecial Weather StatementFFCMurray37 min
Jul 12, 3:24 PM EDTSpecial Weather StatementFFCCrisp, Dooly51 min
Jul 12, 3:27 PM EDTSpecial Weather StatementFFCGlascock, Jefferson, Washington48 min
Jul 12, 3:30 PM EDTSpecial Weather StatementFFCPulaski, Wilcox45 min
Jul 12, 3:41 PM EDTSpecial Weather StatementFFCFannin49 min
Jul 12, 3:50 PM EDTSpecial Weather StatementFFCGilmer, Pickens40 min
Jul 12, 4:07 PM EDTSpecial Weather StatementFFCGlascock38 min
Jul 12, 4:09 PM EDTSpecial Weather StatementFFCBleckley, Pulaski51 min
Jul 12, 4:36 PM EDTSpecial Weather StatementFFCDodge24 min
Jul 12, 4:42 PM EDTSpecial Weather StatementFFCHouston33 min
Jul 12, 4:47 PM EDTSpecial Weather StatementFFCChattahoochee, Stewart, Webster43 min
Jul 12, 4:56 PM EDTSpecial Weather StatementFFCSumter49 min
Jul 12, 4:59 PM EDTSpecial Weather StatementFFCDodge, Pulaski46 min
Jul 12, 5:01 PM EDTSpecial Weather StatementFFCBanks29 min
Jul 12, 5:04 PM EDTSpecial Weather StatementFFCMontgomery, Wheeler41 min
Jul 12, 5:15 PM EDTSpecial Weather StatementFFCBleckley, Twiggs30 min
Jul 12, 5:20 PM EDTSpecial Weather StatementFFCHarris, Marion, Muscogee40 min
Jul 12, 5:38 PM EDTSpecial Weather StatementFFCBibb, Crawford, Peach52 min
Jul 12, 5:46 PM EDTSpecial Weather StatementFFCLaurens, Treutlen44 min
Jul 12, 5:48 PM EDTSpecial Weather StatementFFCHouston, Macon42 min
Jul 12, 5:51 PM EDTSpecial Weather StatementFFCDodge, Wheeler24 min
Jul 12, 5:57 PM EDTSpecial Weather StatementFFCHarris, Meriwether, Talbot, Troup, Upson48 min
Jul 12, 6:14 PM EDTSpecial Weather StatementFFCBibb, Jones46 min
Jul 12, 6:25 PM EDTSpecial Weather StatementFFCJohnson50 min
Jul 12, 6:38 PM EDTSpecial Weather StatementFFCLamar, Meriwether, Pike, Spalding, Troup, Upson37 min
Jul 12, 6:51 PM EDTSpecial Weather StatementFFCJasper, Putnam39 min
Jul 12, 7:02 PM EDTSpecial Weather StatementFFCBaldwin, Glascock, Greene, Hancock, Jefferson, Warren and 1 more43 min
Jul 12, 7:06 PM EDTSpecial Weather StatementFFCButts, Clayton, Coweta, Fayette, Henry, Morgan and 3 more39 min
Jul 12, 7:33 PM EDTSpecial Weather StatementFFCEmanuel, Montgomery, Toombs, Treutlen42 min
Jul 12, 7:44 PM EDTSpecial Weather StatementFFCHenry, Morgan, Newton, Oconee, Rockdale46 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2021Every severe thunderstorm warning in 2021

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.