Alert archive / Georgia / Special Weather Statements in 2021

Special Weather Statement, NWS Atlanta, GA

June 11, 2021Johnson County, Georgia

NWS Atlanta, GA issued this special weather statement at Jun 11, 2021, 6:39 PM EDT for Johnson County, Georgia. It was in force for 36 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 11, 2021, 6:39 PM EDT (22:39 UTC)
Expired
Jun 11, 2021, 7:15 PM EDT
In force
36 min
Issued by
NWS Atlanta, GA
Wind
50

County Johnson County, GA

The radar

The Robins AFB radar (KJGX), 73 km from the middle of the area, began a volume at 22:38 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, 10.7 hours before the alert went out and 199 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 2021-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 180 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 2021-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 74 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
180 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
640 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
74 m²/s²
0-3 km storm-relative helicity
34 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

985 
WWUS82 KFFC 112239
SPSFFC

Special Weather Statement
National Weather Service Peachtree City GA
639 PM EDT Fri Jun 11 2021
 
GAZ085-086-097-112315-
Emanuel GA-Johnson GA-Laurens GA-
639 PM EDT Fri Jun 11 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN EMANUEL...JOHNSON
AND NORTHEASTERN LAURENS COUNTIES UNTIL 715 PM EDT...

At 639 PM EDT...an area of strong thunderstorms was centered near 
Wrightsville...moving east at 35 mph.

  HAZARD...40 to 50 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
Swainsboro, Wrightsville, Adrian, Kite, Spann, Donovan, Blundale,
Lovett, Norristown Junction, Dellwood, New Home, Meeks, Brewton and
Scott.

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 3250 8255 3251 8256 3251 8265 3249 8264
      3250 8265 3260 8285 3277 8279 3278 8247
      3276 8243 3278 8239 3261 8232
TIME...MOT...LOC 2239Z 280DEG 28KT 3269 8267 

WIND...50MPH

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 11, 2:41 PM EDTSpecial Weather StatementFFCCoweta34 min
Jun 11, 3:08 PM EDTSpecial Weather StatementFFCClayton, Fayette22 min
Jun 11, 3:15 PM EDTSpecial Weather StatementFFCWashington30 min
Jun 11, 3:35 PM EDTSpecial Weather StatementFFCTelfair25 min
Jun 11, 4:15 PM EDTSpecial Weather StatementFFCChattahoochee, Muscogee30 min
Jun 11, 4:41 PM EDTSpecial Weather StatementFFCToombs19 min
Jun 11, 4:42 PM EDTSevere Thunderstorm WarningFFCChattahoochee, Muscogee33 min
Jun 11, 4:48 PM EDTSpecial Weather StatementFFCStewart27 min
Jun 11, 5:04 PM EDTSpecial Weather StatementFFCPutnam26 min
Jun 11, 5:09 PM EDTSpecial Weather StatementFFCMarion, Webster36 min
Jun 11, 5:11 PM EDTSpecial Weather StatementFFCHouston34 min
Jun 11, 5:19 PM EDTSpecial Weather StatementFFCBaldwin26 min
Jun 11, 5:32 PM EDTSpecial Weather StatementFFCWilkinson28 min
Jun 11, 5:40 PM EDTSpecial Weather StatementFFCWashington35 min
Jun 11, 5:51 PM EDTSpecial Weather StatementFFCWilkinson24 min
Jun 11, 6:03 PM EDTSpecial Weather StatementFFCJohnson27 min
Jun 11, 6:15 PM EDTSpecial Weather StatementFFCLaurens30 min
Jun 11, 7:07 PM EDTSpecial Weather StatementFFCEmanuel23 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.