Alert archive / Georgia / Special Weather Statements in 2021
Special Weather Statement, NWS Atlanta, GA
NWS Atlanta, GA issued this special weather statement at Aug 19, 2021, 4:35 PM EDT for Gwinnett County, Georgia. It was in force for 25 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 19, 2021, 4:35 PM EDT (20:35 UTC)
- Expired
- Aug 19, 2021, 5:00 PM EDT
- In force
- 25 min
- Issued by
- NWS Atlanta, GA
- Wind
- 40
County Gwinnett County, GA
The radar
The Atlanta radar (KFFC), 84 km from the middle of the area, began a volume at 20:35 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, 8.6 hours before the alert went out and 79 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
- 603 J/kg
- Mixed-layer CIN
- -63 J/kg
- Mixed-layer LCL
- 921 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 13 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
597
WWUS82 KFFC 192035
SPSFFC
Special Weather Statement
National Weather Service Peachtree City GA
435 PM EDT Thu Aug 19 2021
GAZ034-035-046-047-192100-
Walton GA-Rockdale GA-Barrow GA-Gwinnett GA-
435 PM EDT Thu Aug 19 2021
...A STRONG THUNDERSTORM WILL IMPACT PORTIONS OF NORTHEASTERN
ROCKDALE, SOUTHWESTERN BARROW, SOUTHEASTERN GWINNETT AND NORTHWESTERN
WALTON COUNTIES THROUGH 500 PM EDT...
At 435 PM EDT...a strong thunderstorm was over Grayson, or near
Lawrenceville...moving east at 20 mph.
HAZARD...Up to 40 mph wind...frequent cloud to ground lightning and
heavy rain.
SOURCE...Radar indicated.
IMPACT...Expect minor damage to tree limbs and blowing around of
light...unsecured objects. Heavy rain may cause temporary
street flooding especially in poor drainage areas.
Some locations in the path of this storm include
Lawrenceville, Winder, Snellville, Loganville, Auburn, Dacula,
Grayson, Walnut Grove, Between, Carl, Jersey, Bold Springs, Windsor,
Harbin, Nicholasville, Youth, Big Haynes Creek Park, Rosebud and
Campton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
People outdoors should seek shelter immediately. If you can hear
thunder...you are close enough to be struck by lightning. Motorists
should slow down and be prepared for possible loss of control due to
hydroplaning.
LAT...LON 3404 8375 3387 8372 3370 8380 3373 8390
3374 8391 3374 8392 3379 8407 3400 8405
TIME...MOT...LOC 2035Z 276DEG 19KT 3389 8396
MAX HAIL SIZE...
MAX WIND GUST...40MPH
$$The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 8:13 PM EDT | River Flood Warning | FFC | Bibb, Houston, Jones, Monroe, Twiggs | 16 hr |
| Aug 19, 1:54 PM EDT | Special Weather Statement | FFC | Bartow | 36 min |
| Aug 19, 2:21 PM EDT | Special Weather Statement | FFC | Twiggs | 24 min |
| Aug 19, 2:23 PM EDT | Special Weather Statement | FFC | White | 22 min |
| Aug 19, 2:32 PM EDT | Special Weather Statement | FFC | Haralson | 28 min |
| Aug 19, 3:07 PM EDT | Special Weather Statement | FFC | Polk | 23 min |
| Aug 19, 3:12 PM EDT | Special Weather Statement | FFC | Hall | 33 min |
| Aug 19, 3:24 PM EDT | Special Weather Statement | FFC | Fulton | 36 min |
| Aug 19, 3:33 PM EDT | Flash Flood Warning | FFC | Polk | 3 hr |
| Aug 19, 3:38 PM EDT | Special Weather Statement | FFC | Banks | 22 min |
| Aug 19, 4:04 PM EDT | Special Weather Statement | FFC | DeKalb, Gwinnett | 26 min |
| Aug 19, 4:41 PM EDT | River Flood Warning | FFC | Polk | 6 hr |
| Aug 19, 5:01 PM EDT | Special Weather Statement | FFC | Barrow, Walton | 29 min |
| Aug 19, 5:04 PM EDT | Special Weather Statement | FFC | Jasper, Newton | 26 min |
| Aug 19, 5:13 PM EDT | Special Weather Statement | FFC | Meriwether | 32 min |
| Aug 19, 5:32 PM EDT | River Flood Warning | FFC | Gwinnett | 112 min |
| Aug 19, 5:36 PM EDT | Special Weather Statement | FFC | Morgan | 24 min |
| Aug 19, 6:11 PM EDT | Special Weather Statement | FFC | Upson | 34 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.