Alert archive / Georgia / Special Weather Statements in 2021

Special Weather Statement, NWS Atlanta, GA

June 7, 2021Johnson County, Georgia

NWS Atlanta, GA issued this special weather statement at Jun 7, 2021, 4:04 PM EDT for Johnson County, Georgia. It was in force for 26 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
Jun 7, 2021, 4:04 PM EDT (20:04 UTC)
Expired
Jun 7, 2021, 4:30 PM EDT
In force
26 min
Issued by
NWS Atlanta, GA
Wind
40

County Johnson County, GA

The radar

The Robins AFB radar (KJGX), 43 km from the middle of the area, began a volume at 20:03 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, 8.1 hours before the alert went out and 169 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 2021-06-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 590 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 2021-06-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 109 square meters per square second.193958Sfc1 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
590 J/kg
Mixed-layer CIN
-33 J/kg
Mixed-layer LCL
628 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
109 m²/s²
0-3 km storm-relative helicity
127 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.1

Open this sounding in Storm Lab

The text

As transmitted.

746 
WWUS82 KFFC 072004
SPSFFC

Special Weather Statement
National Weather Service Peachtree City GA
404 PM EDT Mon Jun 7 2021
 
GAZ085-097-072030-
Johnson GA-Laurens GA-
404 PM EDT Mon Jun 7 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN JOHNSON AND
NORTHWESTERN LAURENS COUNTIES UNTIL 430 PM EDT...

At 404 PM EDT...a strong thunderstorm was near Harlow, or near
Dublin...moving northeast at 20 mph.

  HAZARD...Up to 40 mph wind...frequent cloud to ground lightning 
           and heavy rain.

  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
Dublin, Wrightsville, East Dublin, Dudley, Lovett, Spann, Harlow,
Tuckers Crossroad, Brewton and Chappells Mill.

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 3243 8294 3253 8312 3267 8304 3271 8296
      3273 8295 3276 8295 3281 8280 3279 8277
      3277 8277 3277 8275 3268 8269
TIME...MOT...LOC 2004Z 212DEG 19KT 3255 8299 

WIND...40MPH

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 6, 8:06 PM EDTSpecial Weather StatementFFCJones24 min
Jun 6, 9:16 PM EDTSpecial Weather StatementFFCOconee29 min
Jun 6, 9:30 PM EDTSevere Thunderstorm WarningFFCClarke, Oconee, Walton30 min
Jun 6, 9:53 PM EDTSpecial Weather StatementFFCClarke, Jackson37 min
Jun 7, 3:11 PM EDTSpecial Weather StatementFFCHouston34 min
Jun 7, 3:44 PM EDTSpecial Weather StatementFFCBibb31 min
Jun 7, 3:52 PM EDTSpecial Weather StatementFFCCoweta23 min
Jun 7, 4:30 PM EDTSpecial Weather StatementFFCBibb45 min
Jun 7, 5:06 PM EDTSpecial Weather StatementFFCMontgomery, Toombs39 min
Jun 7, 5:45 PM EDTSpecial Weather StatementFFCClarke, Oconee45 min
Jun 7, 6:06 PM EDTSpecial Weather StatementFFCJefferson24 min
Jun 7, 6:32 PM EDTSpecial Weather StatementFFCGilmer28 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.