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, 8:33 PM EDT for Cobb County, Georgia. It was in force for 27 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, 8:33 PM EDT (00:33 UTC)
- Expired
- Jun 30, 2021, 9:00 PM EDT
- In force
- 27 min
- Issued by
- NWS Atlanta, GA
- Wind
- 40
County Cobb County, GA
The radar
The Atlanta radar (KFFC), 77 km from the middle of the area, began a volume at 00:33 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 00:00Z, 0.6 hours before the alert went out and 74 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
- 1062 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 1394 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -41 m²/s²
- 0-3 km storm-relative helicity
- -31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
762
WWUS82 KFFC 010033
SPSFFC
Special Weather Statement
National Weather Service Peachtree City GA
833 PM EDT Wed Jun 30 2021
GAZ021-032-033-045-010100-
North Fulton GA-Cobb GA-Cherokee GA-DeKalb GA-
833 PM EDT Wed Jun 30 2021
...SIGNIFICANT WEATHER ADVISORY FOR NORTH FULTON...NORTHEASTERN
COBB...SOUTHERN CHEROKEE AND NORTHWESTERN DEKALB COUNTIES UNTIL 900
PM EDT...
At 833 PM EDT...a strong thunderstorm was over Roswell, or 12 miles
east of Marietta...moving northwest at 10 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
Sandy Springs, Roswell, Alpharetta, Dunwoody and Sweat 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 3402 8421 3400 8423 3400 8424 3399 8425
3399 8426 3397 8426 3392 8431 3401 8448
3413 8444 3413 8430
TIME...MOT...LOC 0033Z 123DEG 7KT 3400 8433
WIND...40MPH
$$The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 8:04 PM EDT | Special Weather Statement | FFC | Forsyth | 26 min |
| Jun 30, 8:31 PM EDT | Special Weather Statement | FFC | Cobb | 29 min |
| Jun 30, 8:37 PM EDT | Severe Thunderstorm Warning | FFC | Cobb | 38 min |
| Jul 1, 7:51 PM EDT | Special Weather Statement | FFC | Bibb | 24 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.