Alert archive / Georgia / Special Weather Statements in 2016

Special Weather Statement, NWS Atlanta, GA

April 28, 2016Johnson County, Georgia

NWS Atlanta, GA issued this special weather statement at Apr 28, 2016, 3:25 PM EDT for Johnson County, Georgia. It was in force for 35 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
Apr 28, 2016, 3:25 PM EDT (19:25 UTC)
Expired
Apr 28, 2016, 4:00 PM EDT
In force
35 min
Issued by
NWS Atlanta, GA

County Johnson County, GA

The radar

The Robins AFB radar (KJGX), 70 km from the middle of the area, began a volume at 19:27 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, 7.4 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 2016-04-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 773 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 2016-04-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 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
773 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
551 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
138 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.7

Open this sounding in Storm Lab

The text

As transmitted.

780 
WWUS82 KFFC 281925
SPSFFC

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
325 PM EDT THU APR 28 2016
 
GAZ085-086-097-282000-
JOHNSON GA-LAURENS GA-EMANUEL GA-
325 PM EDT THU APR 28 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN JOHNSON...
NORTHEASTERN LAURENS AND WESTERN EMANUEL COUNTIES UNTIL 400 PM EDT...

AT 325 PM EDT...A STRONG THUNDERSTORM WAS 7 MILES EAST OF EAST
DUBLIN...OR 9 MILES EAST OF DUBLIN...MOVING EAST AT 30 MPH.

  HAZARD...UP TO 40 MPH WIND...FREQUENT CLOUD TO GROUND LIGHTNING 
           AND HEAVY RAIN. 

  IMPACT...PEOPLE OUTDOORS SHOULD SEEK SHELTER IMMEDIATELY. EXPECT 
           MINOR DAMAGE TO TREE LIMBS AND BLOWING AROUND OF 
           LIGHT...UNSECURED OBJECTS. ELECTRICAL APPLIANCES SHOULD 
           NOT BE USED UNLESS IN AN EMERGENCY. LOCALIZED FLOODING IN 
           LOW LYING AND POOR DRAINAGE AREAS IS ALSO LIKELY. 
           MOTORISTS SHOULD SLOW DOWN AND BE PREPARED FOR POSSIBLE 
           LOSS OF CONTROL DUE TO HYDROPLANING.  WHEN WATER COVERS 
           THE ROAD...REMEMBER TO TURN AROUND DON'T DROWN. 

SOME LOCATIONS IN THE PATH OF THIS STORM INCLUDE
ADRIAN...MEEKS AND SCOTT. 

LAT...LON 3250 8252 3250 8255 3251 8256 3250 8262
      3251 8265 3250 8265 3250 8277 3260 8279
      3271 8255
TIME...MOT...LOC 1925Z 259DEG 24KT 3257 8275 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 27, 8:10 PM EDTSpecial Weather StatementFFCHeard35 min
Apr 27, 8:19 PM EDTSpecial Weather StatementFFCMuscogee26 min
Apr 27, 8:41 PM EDTSpecial Weather StatementFFCChattahoochee49 min
Apr 27, 8:43 PM EDTSpecial Weather StatementFFCHeard32 min
Apr 27, 8:46 PM EDTSpecial Weather StatementFFCMeriwether29 min
Apr 27, 9:13 PM EDTSpecial Weather StatementFFCCoweta32 min
Apr 27, 9:22 PM EDTSpecial Weather StatementFFCMarion, Schley, Taylor38 min
Apr 28, 2:14 PM EDTSpecial Weather StatementFFCToombs31 min
Apr 28, 2:44 PM EDTSpecial Weather StatementFFCToombs31 min
Apr 28, 3:35 PM EDTSpecial Weather StatementFFCTreutlen25 min
Apr 28, 3:54 PM EDTSpecial Weather StatementFFCEmanuel36 min
Apr 28, 7:30 PM EDTSpecial Weather StatementFFCUpson30 min

Nearby

Special Weather Statements in Georgia, 2016Every special weather statement in 2016

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.