Alert archive / Georgia / Special Weather Statements in 2021

Special Weather Statement, NWS Greenville-Spartanburg, SC

August 20, 2021Franklin County, Hart County, Georgia

NWS Greenville-Spartanburg, SC issued this special weather statement at Aug 20, 2021, 5:28 PM EDT for Franklin County, Hart County, Georgia. It was in force for 32 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, 5:28 PM EDT (21:28 UTC)
Expired
Aug 20, 2021, 6:00 PM EDT
In force
32 min
Issued by
NWS Greenville-Spartanburg, SC
Hail
0.25 in
Wind
50

Counties Franklin County, GA, Hart County, GA

The radar

The Greer radar (KGSP), 109 km from the middle of the area, began a volume at 21:29 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, 9.5 hours before the alert went out and 160 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.

038 
WWUS82 KGSP 202128
SPSGSP

Special Weather Statement
National Weather Service Greenville-Spartanburg SC
528 PM EDT Fri Aug 20 2021
 
GAZ018-026-028-029-202200-
Elbert GA-Hart GA-Franklin GA-Stephens GA-
528 PM EDT Fri Aug 20 2021

...A strong thunderstorm will impact portions of Franklin,
southeastern Stephens, northwestern Elbert and western Hart Counties
through 600 PM EDT...

At 528 PM EDT, Doppler radar was tracking a strong thunderstorm 5
miles north of Carnesville, or near Martin, moving southeast at 25
mph.

HAZARD...Wind gusts up to 50 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects. Minor damage to outdoor objects is 
         possible.

Locations impacted include...
Carnesville, Hartwell, Royston, Lavonia, Gumlog, Bowman, Canon,
Franklin Springs, Bowersville and Martin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3417 8310 3419 8309 3420 8309 3423 8308
      3426 8311 3427 8311 3424 8317 3425 8324
      3441 8339 3443 8338 3446 8340 3457 8319
      3430 8287 3416 8310
TIME...MOT...LOC 2128Z 324DEG 22KT 3445 8320 

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH

$$

RWH

The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 19, 9:37 PM EDTRiver Flood AdvisoryGSPBuncombe13 hr
Aug 20, 4:39 AM EDTSpecial Weather StatementGSPAvery36 min
Aug 20, 4:44 AM EDTSpecial Weather StatementGSPGraham46 min
Aug 20, 4:55 AM EDTSpecial Weather StatementGSPMadison50 min
Aug 20, 5:34 AM EDTSpecial Weather StatementGSPAvery41 min
Aug 20, 5:41 AM EDTSpecial Weather StatementGSPMadison34 min
Aug 20, 6:25 AM EDTSpecial Weather StatementGSPMadison50 min
Aug 20, 7:21 PM EDTSpecial Weather StatementGSPCleveland24 min
Aug 20, 7:44 PM EDTSpecial Weather StatementGSPCleveland31 min
Aug 20, 4:44 PM EDTSevere Thunderstorm WarningGSPOconee46 min
Aug 20, 5:58 PM EDTSpecial Weather StatementGSPHart32 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.