Alert archive / Georgia / Special Weather Statements in 2021

Special Weather Statement, NWS Atlanta, GA

August 19, 2021Twiggs County, Georgia

NWS Atlanta, GA issued this special weather statement at Aug 19, 2021, 2:21 PM EDT for Twiggs 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 19, 2021, 2:21 PM EDT (18:21 UTC)
Expired
Aug 19, 2021, 2:45 PM EDT
In force
24 min
Issued by
NWS Atlanta, GA
Wind
40

County Twiggs County, GA

The radar

The Robins AFB radar (KJGX), 19 km from the middle of the area, began a volume at 18:23 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, 6.4 hours before the alert went out and 113 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 12:00Z on 2021-08-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 603 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 12:00Z on 2021-08-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 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
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

Open this sounding in Storm Lab

The text

As transmitted.

869 
WWUS82 KFFC 191821
SPSFFC

Special Weather Statement
National Weather Service Peachtree City GA
221 PM EDT Thu Aug 19 2021
 
GAZ082-083-095-191845-
Bibb GA-Houston GA-Twiggs GA-
221 PM EDT Thu Aug 19 2021

...A STRONG THUNDERSTORM WILL IMPACT PORTIONS OF SOUTHEASTERN BIBB,
CENTRAL TWIGGS AND NORTH CENTRAL HOUSTON COUNTIES THROUGH 245 PM
EDT...

At 220 PM EDT...a strong thunderstorm was over Rutland, or near
Macon...moving east at 25 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
Macon, Jeffersonville, Warner Robins, Marion, Bullard, Rutland,
Fitzpatrick, Ripley, Huber, Cross Keys, District Path, Dry Branch,
Myricks Mill, Elberta, Franklinton and Middle Georgia Regional
Airport.

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 3265 8367 3284 8369 3286 8355 3284 8352
      3288 8344 3289 8340 3274 8332 3260 8336
TIME...MOT...LOC 1820Z 273DEG 20KT 3274 8360 

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

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 18, 8:13 PM EDTRiver Flood WarningFFCBibb, Houston, Jones, Monroe, Twiggs16 hr
Aug 19, 1:54 PM EDTSpecial Weather StatementFFCBartow36 min
Aug 19, 2:23 PM EDTSpecial Weather StatementFFCWhite22 min
Aug 19, 2:32 PM EDTSpecial Weather StatementFFCHaralson28 min
Aug 19, 3:07 PM EDTSpecial Weather StatementFFCPolk23 min
Aug 19, 3:12 PM EDTSpecial Weather StatementFFCHall33 min
Aug 19, 3:24 PM EDTSpecial Weather StatementFFCFulton36 min
Aug 19, 3:33 PM EDTFlash Flood WarningFFCPolk3 hr
Aug 19, 3:38 PM EDTSpecial Weather StatementFFCBanks22 min
Aug 19, 4:04 PM EDTSpecial Weather StatementFFCDeKalb, Gwinnett26 min
Aug 19, 4:35 PM EDTSpecial Weather StatementFFCGwinnett25 min
Aug 19, 4:41 PM EDTRiver Flood WarningFFCPolk6 hr
Aug 19, 5:01 PM EDTSpecial Weather StatementFFCBarrow, Walton29 min
Aug 19, 5:04 PM EDTSpecial Weather StatementFFCJasper, Newton26 min
Aug 19, 5:13 PM EDTSpecial Weather StatementFFCMeriwether32 min
Aug 19, 5:32 PM EDTRiver Flood WarningFFCGwinnett112 min
Aug 19, 5:36 PM EDTSpecial Weather StatementFFCMorgan24 min
Aug 19, 6:11 PM EDTSpecial Weather StatementFFCUpson34 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.