Alert archive / Georgia / Special Weather Statements in 2021

Special Weather Statement, NWS Atlanta, GA

August 16, 2021Morgan County, Walton County, Georgia

NWS Atlanta, GA issued this special weather statement at Aug 16, 2021, 3:02 PM EDT for Morgan County, Walton County, Georgia. It was in force for 28 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 16, 2021, 3:02 PM EDT (19:02 UTC)
Expired
Aug 16, 2021, 3:30 PM EDT
In force
28 min
Issued by
NWS Atlanta, GA
Wind
40

Counties Morgan County, GA, Walton County, GA

The radar

The Atlanta radar (KFFC), 91 km from the middle of the area, began a volume at 19:05 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, 7.0 hours before the alert went out and 85 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 2021-08-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 86 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 2021-08-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 32 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
86 J/kg
Mixed-layer CIN
-80 J/kg
Mixed-layer LCL
1005 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
32 m²/s²
0-3 km storm-relative helicity
66 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

As transmitted.

281 
WWUS82 KFFC 161902
SPSFFC

Special Weather Statement
National Weather Service Peachtree City GA
302 PM EDT Mon Aug 16 2021
 
GAZ047>049-161930-
Morgan GA-Walton GA-Newton GA-
302 PM EDT Mon Aug 16 2021

...A STRONG THUNDERSTORM WILL IMPACT PORTIONS OF NORTHWESTERN MORGAN,
CENTRAL WALTON AND NORTHEASTERN NEWTON COUNTIES THROUGH 330 PM EDT...

At 302 PM EDT...a strong thunderstorm was over Rutledge, or 8 miles
west of Madison...moving northwest at 20 mph.

HAZARD...40 mph wind 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
Monroe, Madison, Social Circle, Walnut Grove, Rutledge, Newborn, Good
Hope, Jersey, Ebenezer, Hard Labor Creek State Park, Brick Store,
Pannell and Herndonville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. Motorists should
slow down and be prepared for possible loss of control due to
hydroplaning.

LAT...LON 3358 8348 3351 8366 3353 8368 3351 8369
      3375 8387 3388 8360
TIME...MOT...LOC 1902Z 156DEG 18KT 3361 8362 

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

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 15, 9:29 PM EDTSpecial Weather StatementFFCDade61 min
Aug 15, 10:14 PM EDTSpecial Weather StatementFFCCatoosa31 min
Aug 15, 10:46 PM EDTSpecial Weather StatementFFCCatoosa, Dade, Walker29 min
Aug 15, 11:10 PM EDTSpecial Weather StatementFFCCatoosa, Dade, Walker35 min
Aug 16, 12:08 AM EDTSpecial Weather StatementFFCCatoosa, Chattooga, Floyd, Murray, Walker, Whitfield22 min
Aug 16, 12:11 AM EDTSpecial Weather StatementFFCFannin, Gilmer, Lumpkin, Union34 min
Aug 16, 1:13 AM EDTSpecial Weather StatementFFCTowns, Union32 min
Aug 16, 3:07 AM EDTRiver Flood WarningFFCWhitfield19 min
Aug 16, 4:32 AM EDTFlash Flood WatchFFCBanks, Barrow, Bartow, Bibb, Butts, Carroll and 65 more40 hr
Aug 16, 12:19 PM EDTWind AdvisoryFFCBibb, Butts, Chattahoochee, Clarke, Clayton, Coweta and 35 more19 hr

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.