Alert archive / Georgia / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 155, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Dec 29, 2021, 11:08 PM EST for 9 counties in Georgia. It was in force for 52 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 29, 2021, 11:08 PM EST (04:08 UTC)
- Expired
- Dec 30, 2021, 12:00 AM EST
- In force
- 52 min
- Issued by
- NWS Atlanta, GA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Bartow County, GA, Cherokee County, GA, Cobb County, GA, Dawson County, GA, Forsyth County, GA, Fulton County, GA, Lumpkin County, GA, Paulding County, GA, Pickens County, GA
The radar
The Atlanta radar (KFFC), 107 km from the middle of the area, began a volume at 04:11 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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Dec 29, 10:16 PM EST | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 4.1 hours before the alert went out and 104 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.
- Mixed-layer CAPE
- 251 J/kg
- Mixed-layer CIN
- -52 J/kg
- Mixed-layer LCL
- 790 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 228 m²/s²
- 0-3 km storm-relative helicity
- 240 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 3.0
The text
As transmitted.
832
WUUS52 KFFC 300408
SVRFFC
GAC015-057-067-085-117-121-187-223-227-300500-
/O.NEW.KFFC.SV.W.0155.211230T0408Z-211230T0500Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
1108 PM EST Wed Dec 29 2021
The National Weather Service in Peachtree City has issued a
* Severe Thunderstorm Warning for...
Northeastern Paulding County in northwestern Georgia...
Cherokee County in north central Georgia...
Forsyth County in north central Georgia...
Northern Cobb County in north central Georgia...
Southwestern Lumpkin County in north central Georgia...
Dawson County in north central Georgia...
Northeastern Fulton County in north central Georgia...
Pickens County in north central Georgia...
Southeastern Bartow County in northwestern Georgia...
* Until midnight EST.
* At 1108 PM EST, severe thunderstorms were located along a line
extending from near Salacoa Valley to Waleska to Little River
Landing to Emerson to near Braswell, moving east at 55 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Marietta, Canton, Cartersville, Cumming, Jasper, Dawsonville, Sandy
Springs, Roswell, Johns Creek, Alpharetta, Milton, Kennesaw,
Woodstock, Acworth, Sugar Hill, Holly Springs, Emerson, Ball
Ground, Nelson and Waleska.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 500 AM EST for north central
and northwestern Georgia.
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 3446 8394 3445 8394 3441 8398 3440 8397
3436 8398 3433 8395 3429 8393 3427 8395
3424 8395 3419 8400 3418 8406 3409 8411
3400 8421 3397 8437 3397 8496 3415 8480
3417 8469 3429 8458 3445 8465 3458 8412
TIME...MOT...LOC 0408Z 261DEG 48KT 3441 8462 3432 8452 3419 8460 3414
8474 3398 8493
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$3 follow-up statements
550
WWUS52 KFFC 300426
SVSFFC
Severe Weather Statement
National Weather Service Peachtree City GA
1126 PM EST Wed Dec 29 2021
GAC015-227-300435-
/O.CAN.KFFC.SV.W.0155.000000T0000Z-211230T0500Z/
Pickens GA-Bartow GA-
1126 PM EST Wed Dec 29 2021
...THE SEVERE THUNDERSTORM WARNING FOR PICKENS AND SOUTHEASTERN
BARTOW COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 500 AM EST for north central
and northwestern Georgia.
LAT...LON 3446 8394 3441 8398 3429 8394 3430 8393
3429 8393 3424 8395 3418 8406 3400 8421
3397 8437 3397 8496 3404 8486 3408 8466
3417 8465 3432 8435 3438 8439 3438 8426
3447 8426 3449 8433 3450 8431 3453 8419
TIME...MOT...LOC 0425Z 260DEG 48KT 3445 8435 3436 8425 3423 8433 3416
8444 3398 8462
$$
GAC057-067-085-117-121-187-223-300500-
/O.CON.KFFC.SV.W.0155.000000T0000Z-211230T0500Z/
Paulding GA-Cherokee GA-Forsyth GA-Cobb GA-Lumpkin GA-Dawson GA-
Fulton GA-
1126 PM EST Wed Dec 29 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT EST
FOR NORTHEASTERN PAULDING...CHEROKEE...FORSYTH...NORTHERN COBB...
SOUTHWESTERN LUMPKIN...DAWSON AND NORTHEASTERN FULTON COUNTIES...
At 1125 PM EST, severe thunderstorms were located along a line
extending from Marblehill to Hollis Lathem Reservoir to Lathemtown to
Hickory Flat to near Due West, moving east at 55 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Marietta, Canton, Cumming, Dawsonville, Sandy Springs, Roswell, Johns
Creek, Alpharetta, Milton, Kennesaw, Woodstock, Acworth, Holly
Springs, Ball Ground, Braswell, Free Home, Buffington, Dougherty,
Hickory Flat and Kellogg Creek.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 500 AM EST for north central
and northwestern Georgia.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3446 8394 3441 8398 3429 8394 3430 8393
3429 8393 3424 8395 3418 8406 3400 8421
3397 8437 3397 8496 3404 8486 3408 8466
3417 8465 3432 8435 3438 8439 3438 8426
3447 8426 3449 8433 3450 8431 3453 8419
TIME...MOT...LOC 0425Z 260DEG 48KT 3445 8435 3436 8425 3423 8433 3416
8444 3398 8462
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$039
WWUS52 KFFC 300437
SVSFFC
Severe Weather Statement
National Weather Service Peachtree City GA
1137 PM EST Wed Dec 29 2021
GAC085-187-223-300447-
/O.CAN.KFFC.SV.W.0155.000000T0000Z-211230T0500Z/
Paulding GA-Lumpkin GA-Dawson GA-
1137 PM EST Wed Dec 29 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PAULDING...
SOUTHWESTERN LUMPKIN AND DAWSON COUNTIES IS CANCELLED...
The storms which prompted the warning have weakened or moved out of
the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 500 AM EST for north central
and northwestern Georgia.
LAT...LON 3397 8474 3406 8463 3406 8445 3430 8427
3433 8395 3429 8394 3430 8393 3429 8393
3424 8395 3418 8406 3400 8421 3397 8437
TIME...MOT...LOC 0437Z 270DEG 49KT 3424 8425 3406 8433 3397 8447
$$
GAC057-067-117-121-300500-
/O.CON.KFFC.SV.W.0155.000000T0000Z-211230T0500Z/
Cherokee GA-Forsyth GA-Cobb GA-Fulton GA-
1137 PM EST Wed Dec 29 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT EST
FOR SOUTHEASTERN CHEROKEE...FORSYTH...NORTHERN COBB AND NORTHEASTERN
FULTON COUNTIES...
At 1137 PM EST, severe thunderstorms were located along a line
extending from Ducktown to near Alpharetta to near White Water Park,
moving east at 55 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Marietta, Cumming, Sandy Springs, Roswell, Johns Creek, Alpharetta,
Milton, Kennesaw, Acworth, Free Home, Drew, Kennesaw State
University, Coal Mountain, Brookwood, Birmingham, Matt, Chestatee,
Oscarville, Sandy Plains and Holbrook.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 500 AM EST for north central
and northwestern Georgia.
A tornado watch remains in effect for the warned area. Tornadoes can
develop quickly from severe thunderstorms. Although a tornado is not
immediately likely, if one is spotted act quickly and move to a place
of safety inside a sturdy structure, such as a basement or small
interior room.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3397 8474 3406 8463 3406 8445 3430 8427
3433 8395 3429 8394 3430 8393 3429 8393
3424 8395 3418 8406 3400 8421 3397 8437
TIME...MOT...LOC 0437Z 270DEG 49KT 3424 8425 3406 8433 3397 8447
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$658
WWUS52 KFFC 300452
SVSFFC
Severe Weather Statement
National Weather Service Peachtree City GA
1152 PM EST Wed Dec 29 2021
GAC057-067-117-121-300502-
/O.EXP.KFFC.SV.W.0155.000000T0000Z-211230T0500Z/
Cherokee GA-Forsyth GA-Cobb GA-Fulton GA-
1152 PM EST Wed Dec 29 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CHEROKEE...
FORSYTH...NORTHERN COBB AND NORTHEASTERN FULTON COUNTIES WILL EXPIRE
AT MIDNIGHT EST...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds, lightning and very heavy rain are still possible with these
thunderstorms.
A Tornado Watch remains in effect until 500 AM EST for north central
and northwestern Georgia.
LAT...LON 3397 8474 3406 8463 3406 8445 3430 8427
3433 8395 3429 8394 3430 8393 3429 8393
3424 8395 3418 8406 3400 8421 3397 8437
TIME...MOT...LOC 0452Z 261DEG 48KT 3427 8403 3409 8411 3400 8425
$$The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 29, 8:28 PM EST | Special Weather Statement | FFC | Dade | 32 min |
| Dec 29, 8:41 PM EST | Special Weather Statement | FFC | Dade | 34 min |
| Dec 29, 9:07 PM EST | Special Weather Statement | FFC | Catoosa, Walker | 23 min |
| Dec 29, 9:28 PM EST | Special Weather Statement | FFC | Murray, Whitfield | 32 min |
| Dec 29, 9:38 PM EST | Severe Thunderstorm Warning | FFC | Chattooga, Dade, Walker | 52 min |
| Dec 29, 9:57 PM EST | Special Weather Statement | FFC | Fannin, Murray | 48 min |
| Dec 29, 10:05 PM EST | Severe Thunderstorm Warning | FFC | Floyd, Gilmer, Gordon, Murray, Pickens, Whitfield | 40 min |
| Dec 29, 10:15 PM EST | Special Weather Statement | FFC | Floyd | 30 min |
| Dec 29, 10:31 PM EST | Severe Thunderstorm Warning | FFC | Bartow, Cherokee, Cobb, Floyd, Paulding, Polk | 44 min |
| Dec 29, 10:37 PM EST | Severe Thunderstorm Warning | FFC | Bartow, Dawson, Gilmer, Gordon, Pickens | 38 min |
| Dec 29, 10:41 PM EST | Special Weather Statement | FFC | Fannin, Gilmer, Union | 34 min |
| Dec 29, 10:51 PM EST | Special Weather Statement | FFC | Haralson | 24 min |
| Dec 29, 11:12 PM EST | Severe Thunderstorm Warning | FFC | Carroll, Cobb, Douglas, Haralson, Paulding, Polk | 48 min |
| Dec 29, 11:35 PM EST | Special Weather Statement | FFC | Banks, Hall, White | 25 min |
| Dec 29, 11:42 PM EST | Special Weather Statement | FFC | Fulton, Gwinnett | 33 min |
| Dec 29, 11:48 PM EST | Special Weather Statement | FFC | Carroll, Douglas | 27 min |
| Dec 30, 12:03 AM EST | Special Weather Statement | FFC | Banks | 27 min |
| Dec 30, 12:29 AM EST | Special Weather Statement | FFC | Clarke, DeKalb, Jackson, Madison | 31 min |
| Dec 30, 1:00 AM EST | Special Weather Statement | FFC | Barrow, Clarke, DeKalb, Fulton, Oconee, Walton | 60 min |
| Dec 30, 1:07 AM EST | Special Weather Statement | FFC | Heard | 23 min |
| Dec 30, 1:23 AM EST | River Flood Warning | FFC | Dade | 9 hr |
| Dec 30, 1:27 AM EST | Special Weather Statement | FFC | Heard | 33 min |
| Dec 30, 1:53 AM EST | River Flood Warning | FFC | DeKalb | 4 hr |
| Dec 30, 2:32 AM EST | Special Weather Statement | FFC | Morgan, Rockdale | 58 min |
| Dec 30, 4:50 AM EST | Special Weather Statement | FFC | Coweta, Fayette, Heard | 40 min |
| Dec 30, 5:38 AM EST | Special Weather Statement | FFC | Clayton, Coweta, Fayette, Heard | 52 min |
| Dec 30, 5:45 AM EST | Special Weather Statement | FFC | Jefferson | 30 min |
| Dec 30, 7:22 AM EST | Special Weather Statement | FFC | DeKalb, Douglas, Fulton, Haralson | 38 min |
| Dec 30, 8:25 AM EST | Flash Flood Warning | FFC | Carroll, Cobb, DeKalb, Douglas, Fulton, Haralson and 1 more | 6 hr |
| Dec 30, 8:34 AM EST | River Flood Warning | FFC | Forsyth, Fulton | 52 hr |
| Dec 30, 8:35 AM EST | Flood Watch | FFC | Banks, Barrow, Bartow, Butts, Carroll, Cherokee and 34 more | 10 hr |
| Dec 30, 8:52 AM EST | Special Weather Statement | FFC | Coweta, Fayette | 23 min |
| Dec 30, 9:07 AM EST | Severe Thunderstorm Warning | FFC | Clayton, Coweta, Fayette | 23 min |
| Dec 30, 9:28 AM EST | Severe Thunderstorm Warning | FFC | Clayton, Fayette, Henry | 32 min |
| Dec 30, 9:33 AM EST | River Flood Warning | FFC | DeKalb, Rockdale | 11 hr |
| Dec 30, 9:42 AM EST | River Flood Warning | FFC | DeKalb, Fulton | 6 hr |
| Dec 30, 9:45 AM EST | River Flood Warning | FFC | Cobb, Douglas | 54 hr |
| Dec 30, 9:48 AM EST | River Flood Warning | FFC | DeKalb | 103 min |
| Dec 30, 9:55 AM EST | Flash Flood Warning | FFC | Carroll, Clayton, Coweta, Fayette, Fulton, Heard and 1 more | 4 hr |
| Dec 30, 9:57 AM EST | Special Weather Statement | FFC | Henry, Newton | 33 min |
| Dec 30, 10:15 AM EST | River Flood Warning | FFC | DeKalb | 3 hr |
| Dec 30, 10:28 AM EST | River Flood Warning | FFC | Fulton | 61 min |
| Dec 30, 10:51 AM EST | Flash Flood Warning | FFC | Greene, Morgan, Newton, Oconee, Oglethorpe, Rockdale and 2 more | 6 hr |
| Dec 30, 11:21 AM EST | River Flood Warning | FFC | Newton, Rockdale | 26 hr |
| Dec 30, 11:39 AM EST | Special Weather Statement | FFC | Heard | 66 min |
| Dec 30, 12:05 PM EST | River Flood Warning | FFC | Forsyth | 19 hr |
| Dec 30, 12:11 PM EST | Special Weather Statement | FFC | Wilcox | 34 min |
| Dec 30, 12:17 PM EST | Special Weather Statement | FFC | Jasper, Putnam | 28 min |
| Dec 30, 12:35 PM EST | River Flood Warning | FFC | Cobb | 4 hr |
| Dec 30, 12:46 PM EST | Special Weather Statement | FFC | Hancock, Putnam | 29 min |
| Dec 30, 12:48 PM EST | Special Weather Statement | FFC | Hancock, Putnam | 27 min |
| Dec 30, 12:54 PM EST | Special Weather Statement | FFC | Dodge | 36 min |
| Dec 30, 12:54 PM EST | Special Weather Statement | FFC | Dodge | 36 min |
| Dec 30, 1:13 PM EST | Special Weather Statement | FFC | Troup | 32 min |
| Dec 30, 1:32 PM EST | Severe Thunderstorm Warning | FFC | Montgomery, Telfair, Wheeler | 28 min |
| Dec 30, 2:02 PM EST | Special Weather Statement | FFC | Montgomery, Toombs | 28 min |
| Dec 30, 2:05 PM EST | Special Weather Statement | FFC | Dodge | 25 min |
| Dec 30, 2:12 PM EST | Special Weather Statement | FFC | Butts, Lamar, Pike | 33 min |
| Dec 30, 2:12 PM EST | Special Weather Statement | FFC | Crawford, Peach | 33 min |
| Dec 30, 2:18 PM EST | Severe Thunderstorm Warning | FFC | Butts, Jasper, Lamar, Monroe, Pike | 27 min |
| Dec 30, 2:27 PM EST | Special Weather Statement | FFC | Toombs | 33 min |
| Dec 30, 2:31 PM EST | Severe Thunderstorm Warning | FFC | Bibb, Crawford, Houston, Peach | 44 min |
| Dec 30, 2:36 PM EST | Special Weather Statement | FFC | Telfair | 39 min |
| Dec 30, 2:45 PM EST | Severe Thunderstorm Warning | FFC | Baldwin, Jasper, Jones, Monroe, Putnam | 30 min |
| Dec 30, 2:49 PM EST | Severe Thunderstorm Warning | FFC | Baldwin, Jones, Wilkinson | 26 min |
| Dec 30, 2:59 PM EST | Severe Thunderstorm Warning | FFC | Houston, Twiggs | 31 min |
| Dec 30, 3:15 PM EST | Severe Thunderstorm Warning | FFC | Harris, Meriwether, Troup | 30 min |
| Dec 30, 3:19 PM EST | Special Weather Statement | FFC | Wheeler | 26 min |
| Dec 30, 3:30 PM EST | Severe Thunderstorm Warning | FFC | Twiggs, Wilkinson | 45 min |
| Dec 30, 3:34 PM EST | Special Weather Statement | FFC | Jefferson | 26 min |
| Dec 30, 3:40 PM EST | Severe Thunderstorm Warning | FFC | Harris, Meriwether, Talbot, Upson | 50 min |
| Dec 30, 3:45 PM EST | Severe Thunderstorm Warning | FFC | Harris, Muscogee | 31 min |
| Dec 30, 3:55 PM EST | Special Weather Statement | FFC | Twiggs | 35 min |
| Dec 30, 3:56 PM EST | Special Weather Statement | FFC | Houston, Peach | 34 min |
| Dec 30, 3:59 PM EST | Severe Thunderstorm Warning | FFC | Chattahoochee, Marion, Muscogee, Talbot | 46 min |
| Dec 30, 4:05 PM EST | Severe Thunderstorm Warning | FFC | Houston, Macon, Peach | 40 min |
| Dec 30, 4:10 PM EST | Severe Thunderstorm Warning | FFC | Crawford, Monroe, Talbot, Taylor, Upson | 50 min |
| Dec 30, 4:15 PM EST | Severe Thunderstorm Warning | FFC | Laurens, Twiggs, Wilkinson | 45 min |
| Dec 30, 4:18 PM EST | Tornado Warning | FFC | Crawford, Taylor, Upson | 27 min |
| Dec 30, 4:23 PM EST | Severe Thunderstorm Warning | FFC | Chattahoochee, Marion, Stewart, Webster | 37 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.