Alert archive / Georgia / Special Weather Statements in 2021

Special Weather Statement, NWS Atlanta, GA

August 12, 2021Clayton County, Fayette County, Georgia

NWS Atlanta, GA issued this special weather statement at Aug 12, 2021, 10:00 PM EDT for Clayton County, Fayette County, Georgia. It was in force for 30 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 12, 2021, 10:00 PM EDT (02:00 UTC)
Expired
Aug 12, 2021, 10:30 PM EDT
In force
30 min
Issued by
NWS Atlanta, GA
Hail
0.25 in
Wind
40

Counties Clayton County, GA, Fayette County, GA

The radar

The Atlanta radar (KFFC), 22 km from the middle of the area, began a volume at 01:59 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, 2.0 hours before the alert went out and 18 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.

Skew-T log-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 00:00Z on 2021-08-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1721 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 00:00Z on 2021-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1721 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
1390 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
0 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

969 
WWUS82 KFFC 130200
SPSFFC

Special Weather Statement
National Weather Service Peachtree City GA
1000 PM EDT Thu Aug 12 2021
 
GAZ044-054-055-130230-
Fayette GA-Clayton GA-South Fulton GA-
1000 PM EDT Thu Aug 12 2021

...A STRONG THUNDERSTORM WILL IMPACT PORTIONS OF NORTHEASTERN
FAYETTE, SOUTH CENTRAL FULTON AND CLAYTON COUNTIES THROUGH 1030 PM
EDT...

At 1000 PM EDT...a strong thunderstorm was over Riverdale, or near
Jonesboro. This storm was nearly stationary.

HAZARD...Up to 40 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
Fayetteville, Jonesboro, East Point, Union City, Forest Park,
Riverdale, College Park, Morrow, Lovejoy, Hapeville, Lake City,
Hartsfield-Jackson Airport, Bonanza, Jw Smith Reservoir and Irondale.

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 3358 8451 3368 8445 3361 8432 3343 8432
      3343 8435 3341 8436 3341 8451
TIME...MOT...LOC 0200Z 110DEG 3KT 3356 8438 

MAX HAIL SIZE...0.25IN
MAX WIND GUST...40MPH

$$

The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 12, 8:59 PM EDTSpecial Weather StatementFFCPike31 min
Aug 12, 9:28 PM EDTSpecial Weather StatementFFCPike32 min
Aug 12, 9:30 PM EDTSpecial Weather StatementFFCClayton30 min
Aug 12, 9:33 PM EDTSpecial Weather StatementFFCRockdale27 min
Aug 12, 9:49 PM EDTSpecial Weather StatementFFCTroup41 min
Aug 12, 9:55 PM EDTSpecial Weather StatementFFCDeKalb35 min
Aug 12, 10:40 PM EDTSpecial Weather StatementFFCCarroll35 min
Aug 12, 10:51 PM EDTSpecial Weather StatementFFCFulton24 min
Aug 12, 11:49 PM EDTSpecial Weather StatementFFCFulton26 min
Aug 13, 12:15 AM EDTSpecial Weather StatementFFCCobb30 min
Aug 13, 1:08 PM EDTSpecial Weather StatementFFCChattooga37 min
Aug 13, 2:17 PM EDTSpecial Weather StatementFFCChattooga28 min
Aug 13, 3:49 PM EDTSpecial Weather StatementFFCDodge26 min
Aug 13, 3:59 PM EDTSpecial Weather StatementFFCWilcox31 min
Aug 13, 5:05 PM EDTSpecial Weather StatementFFCTelfair25 min
Aug 13, 5:27 PM EDTSpecial Weather StatementFFCTelfair33 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.