Alert archive / Georgia / Special Weather Statements in 2021
Special Weather Statement, NWS Atlanta, GA
NWS Atlanta, GA issued this special weather statement at Aug 7, 2021, 5:22 PM EDT for Gwinnett County, Georgia. It was in force for 23 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
- Aug 7, 2021, 5:22 PM EDT (21:22 UTC)
- Expired
- Aug 7, 2021, 5:45 PM EDT
- In force
- 23 min
- Issued by
- NWS Atlanta, GA
- Hail
- 0.25 in
- Wind
- 50
County Gwinnett County, GA
The radar
The Atlanta radar (KFFC), 89 km from the middle of the area, began a volume at 21:21 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, 9.4 hours before the alert went out and 84 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
- 848 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 799 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
The text
As transmitted.
770
WWUS82 KFFC 072122
SPSFFC
Special Weather Statement
National Weather Service Peachtree City GA
522 PM EDT Sat Aug 7 2021
GAZ034-072145-
Gwinnett GA-
522 PM EDT Sat Aug 7 2021
...A STRONG THUNDERSTORM WILL IMPACT PORTIONS OF WESTERN BARROW,
CENTRAL GWINNETT AND WESTERN WALTON COUNTIES THROUGH 545 PM EDT...
At 521 PM EDT...a strong thunderstorm was over Lawrenceville...moving
southeast at 20 mph.
HAZARD...40 to 50 mph wind...pea sized hail and frequent cloud to
ground lightning.
SOURCE...Radar indicated.
IMPACT...Expect minor damage to tree limbs and blowing around of
light...unsecured objects.
Some locations in the path of this storm include
Lawrenceville, Snellville, Suwanee, Buford, Dacula, Grayson, Harbin,
Hog Mountain and Rosebud.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
People outdoors should seek shelter immediately. If you can hear
thunder...you are close enough to be struck by lightning.
LAT...LON 3403 8386 3400 8387 3398 8383 3397 8383
3396 8382 3394 8381 3382 8394 3379 8397
3379 8399 3396 8413 3410 8400
TIME...MOT...LOC 2121Z 306DEG 16KT 3399 8400
MAX HAIL SIZE...0.25IN
MAX WIND GUST...50MPH
$$The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 9:15 PM EDT | Special Weather Statement | FFC | Fannin | 30 min |
| Aug 7, 12:58 PM EDT | Special Weather Statement | FFC | Lumpkin | 32 min |
| Aug 7, 1:52 PM EDT | Special Weather Statement | FFC | Chattooga | 23 min |
| Aug 7, 2:11 PM EDT | Special Weather Statement | FFC | Whitfield | 34 min |
| Aug 7, 2:27 PM EDT | Special Weather Statement | FFC | Fulton | 33 min |
| Aug 7, 2:48 PM EDT | Special Weather Statement | FFC | Gilmer, Murray | 27 min |
| Aug 7, 2:51 PM EDT | Special Weather Statement | FFC | Floyd | 24 min |
| Aug 7, 3:04 PM EDT | Special Weather Statement | FFC | Carroll | 26 min |
| Aug 7, 3:18 PM EDT | Special Weather Statement | FFC | Gilmer | 27 min |
| Aug 7, 3:19 PM EDT | Special Weather Statement | FFC | Floyd | 26 min |
| Aug 7, 3:27 PM EDT | Special Weather Statement | FFC | Fannin | 33 min |
| Aug 7, 3:28 PM EDT | Special Weather Statement | FFC | Union | 32 min |
| Aug 7, 3:39 PM EDT | Special Weather Statement | FFC | Dawson | 36 min |
| Aug 7, 3:40 PM EDT | Special Weather Statement | FFC | Towns | 35 min |
| Aug 7, 3:41 PM EDT | Special Weather Statement | FFC | Heard | 34 min |
| Aug 7, 3:51 PM EDT | Special Weather Statement | FFC | Paulding | 24 min |
| Aug 7, 4:18 PM EDT | Special Weather Statement | FFC | Paulding | 27 min |
| Aug 7, 4:41 PM EDT | Special Weather Statement | FFC | Forsyth | 34 min |
| Aug 7, 4:45 PM EDT | Special Weather Statement | FFC | Henry | 30 min |
| Aug 7, 4:53 PM EDT | Special Weather Statement | FFC | Cobb | 37 min |
| Aug 7, 4:57 PM EDT | Special Weather Statement | FFC | Pike | 33 min |
| Aug 7, 5:12 PM EDT | Special Weather Statement | FFC | Oconee | 33 min |
| Aug 7, 5:20 PM EDT | Special Weather Statement | FFC | DeKalb | 25 min |
| Aug 7, 6:01 PM EDT | Special Weather Statement | FFC | Gwinnett | 29 min |
| Aug 7, 6:28 PM EDT | Special Weather Statement | FFC | Harris | 32 min |
| Aug 7, 6:36 PM EDT | Special Weather Statement | FFC | Monroe | 24 min |
| Aug 7, 7:04 PM EDT | Special Weather Statement | FFC | Monroe | 26 min |
| Aug 7, 7:05 PM EDT | Special Weather Statement | FFC | Hancock | 25 min |
| Aug 7, 7:09 PM EDT | Special Weather Statement | FFC | Crawford | 36 min |
| Aug 7, 7:34 PM EDT | Special Weather Statement | FFC | Warren | 26 min |
| Aug 7, 7:58 PM EDT | Special Weather Statement | FFC | Glascock | 32 min |
Nearby
Special Weather Statements in Georgia, 2021Every special weather statement 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.