Alert archive / Georgia / Special Weather Statements in 2021

Special Weather Statement, NWS Atlanta, GA

August 20, 2021Banks County, Georgia

NWS Atlanta, GA issued this special weather statement at Aug 20, 2021, 7:27 PM EDT for Banks County, Georgia. It was in force for 33 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 20, 2021, 7:27 PM EDT (23:27 UTC)
Expired
Aug 20, 2021, 8:00 PM EDT
In force
33 min
Issued by
NWS Atlanta, GA
Wind
40

County Banks County, GA

The radar

The Greer radar (KGSP), 135 km from the middle of the area, began a volume at 23:26 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, 11.5 hours before the alert went out and 142 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 2021-08-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 189 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 2021-08-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 37 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
189 J/kg
Mixed-layer CIN
-87 J/kg
Mixed-layer LCL
807 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
37 m²/s²
0-3 km storm-relative helicity
54 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

527 
WWUS82 KFFC 202327
SPSFFC

Special Weather Statement
National Weather Service Peachtree City GA
727 PM EDT Fri Aug 20 2021
 
GAZ023>025-210000-
Hall GA-Banks GA-Jackson GA-
727 PM EDT Fri Aug 20 2021

...A STRONG THUNDERSTORM WILL IMPACT PORTIONS OF BANKS, NORTHEASTERN
HALL AND NORTH CENTRAL JACKSON COUNTIES THROUGH 800 PM EDT...

At 727 PM EDT...a strong thunderstorm was near Lula, or 7 miles
northwest of Homer...moving southeast at 10 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
Homer, Lula, Maysville, Gillsville and Hollingsworth. 

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 3437 8341 3425 8347 3423 8363 3440 8376
      3447 8364 3443 8361 3444 8361 3445 8359
      3448 8356
TIME...MOT...LOC 2327Z 319DEG 10KT 3437 8361 

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

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 20, 5:57 PM EDTSpecial Weather StatementFFCMadison33 min
Aug 20, 6:34 PM EDTSpecial Weather StatementFFCBanks26 min
Aug 20, 7:24 PM EDTSpecial Weather StatementFFCBanks
Aug 20, 7:26 PM EDTSpecial Weather StatementFFCDawson34 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.