Alert archive / Georgia / Special Weather Statements in 2021

Special Weather Statement, NWS Atlanta, GA

August 12, 2021Fulton County, Georgia

NWS Atlanta, GA issued this special weather statement at Aug 12, 2021, 10:51 PM EDT for Fulton County, Georgia. It was in force for 24 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, 10:51 PM EDT (02:51 UTC)
Expired
Aug 12, 2021, 11:15 PM EDT
In force
24 min
Issued by
NWS Atlanta, GA
Wind
40

County Fulton County, GA

The radar

The Atlanta radar (KFFC), 41 km from the middle of the area, began a volume at 02:49 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, 2.9 hours before the alert went out and 39 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.

175 
WWUS82 KFFC 130251
SPSFFC

Special Weather Statement
National Weather Service Peachtree City GA
1051 PM EDT Thu Aug 12 2021
 
GAZ033-044-130315-
North Fulton GA-South Fulton GA-
1051 PM EDT Thu Aug 12 2021

...A STRONG THUNDERSTORM WILL IMPACT PORTIONS OF SOUTH CENTRAL FULTON
COUNTY THROUGH 1115 PM EDT...

At 1051 PM EDT...a strong thunderstorm was over Lakewood Park, or
over Atlanta...moving northwest at 5 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
Atlanta, East Point, College Park, Hapeville, Grant Park-Zoo Atlanta,
Midtown, West End, Virginia Highland, Sweet Auburn, Turner Field,
Piedmont Park, Bankhead, Cascade Heights, Lakewood Park, Atlantic
Station and Little Five Points.

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 3375 8456 3388 8435 3365 8435 3365 8444
      3364 8445
TIME...MOT...LOC 0251Z 145DEG 6KT 3371 8438 

MAX HAIL SIZE...
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, 10:00 PM EDTSpecial Weather StatementFFCClayton, Fayette30 min
Aug 12, 10:40 PM EDTSpecial Weather StatementFFCCarroll35 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.