Alert archive / Georgia / Special Weather Statements in 2021
Special Weather Statement, NWS Atlanta, GA
NWS Atlanta, GA issued this special weather statement at Jun 30, 2021, 6:46 PM EDT for Gwinnett County, Georgia. It was in force for 14 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
- Jun 30, 2021, 6:46 PM EDT (22:46 UTC)
- Expired
- Jun 30, 2021, 7:00 PM EDT
- In force
- 14 min
- Issued by
- NWS Atlanta, GA
- Wind
- 40
County Gwinnett County, GA
The radar
The Atlanta radar (KFFC), 103 km from the middle of the area, began a volume at 22:50 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, 10.8 hours before the alert went out and 99 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
- 396 J/kg
- Mixed-layer CIN
- -65 J/kg
- Mixed-layer LCL
- 954 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 25 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
663
WWUS82 KFFC 302246
SPSFFC
Special Weather Statement
National Weather Service Peachtree City GA
646 PM EDT Wed Jun 30 2021
GAZ023-025-034-035-302300-
Hall GA-Jackson GA-Barrow GA-Gwinnett GA-
646 PM EDT Wed Jun 30 2021
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN HALL...WESTERN
JACKSON...NORTHWESTERN BARROW AND NORTHEASTERN GWINNETT COUNTIES
UNTIL 700 PM EDT...
At 646 PM EDT...a strong thunderstorm was over Hog Mountain, or 9
miles northeast of Lawrenceville...moving northwest at 15 mph.
HAZARD...Up to 40 mph wind...frequent cloud to ground lightning
and heavy rain.
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
Sugar Hill, Suwanee, Buford, Braselton, Auburn, Flowery Branch,
Dacula, Oakwood, Hoschton, Rest Haven, Thompsons Mill, Chateau Elan,
Aqualand Park, Chestnut Mountain, Road Atlanta-Lanier Speedway and
Hog Mountain.
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 3425 8392 3410 8375 3397 8386 3403 8410
3416 8404
TIME...MOT...LOC 2246Z 123DEG 15KT 3407 8391
WIND...40MPH
$$The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 8:12 PM EDT | Special Weather Statement | FFC | Houston | 33 min |
| Jun 29, 8:33 PM EDT | Special Weather Statement | FFC | Twiggs | 27 min |
| Jun 30, 2:37 PM EDT | Special Weather Statement | FFC | Telfair | 23 min |
| Jun 30, 3:02 PM EDT | Special Weather Statement | FFC | Stewart | 28 min |
| Jun 30, 3:07 PM EDT | Special Weather Statement | FFC | Treutlen | 23 min |
| Jun 30, 3:30 PM EDT | Special Weather Statement | FFC | Pulaski | 30 min |
| Jun 30, 3:36 PM EDT | Special Weather Statement | FFC | Emanuel | 24 min |
| Jun 30, 4:12 PM EDT | Special Weather Statement | FFC | Peach, Twiggs | 33 min |
| Jun 30, 4:17 PM EDT | Special Weather Statement | FFC | Johnson | 28 min |
| Jun 30, 4:42 PM EDT | Special Weather Statement | FFC | Crisp | 33 min |
| Jun 30, 4:54 PM EDT | Special Weather Statement | FFC | Peach | 21 min |
| Jun 30, 5:28 PM EDT | Special Weather Statement | FFC | Jackson | 32 min |
| Jun 30, 6:12 PM EDT | Special Weather Statement | FFC | Barrow | 33 min |
| Jun 30, 7:11 PM EDT | Special Weather Statement | FFC | Forsyth | 19 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.