Alert archive / Georgia / Special Weather Statements in 2011

Special Weather Statement, NWS Atlanta, GA

August 4, 2011Gordon County, Georgia

NWS Atlanta, GA issued this special weather statement at Aug 4, 2011, 12:50 AM EDT for Gordon County, Georgia. It was in force for 40 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 4, 2011, 12:50 AM EDT (04:50 UTC)
Expired
Aug 4, 2011, 1:30 AM EDT
In force
40 min
Issued by
NWS Atlanta, GA

County Gordon County, GA

The radar

The Atlanta radar (KFFC), 125 km from the middle of the area, began a volume at 04:53 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 00:00Z, 4.8 hours before the alert went out and 125 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 00:00Z on 2011-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 653 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 00:00Z on 2011-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 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
653 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
2115 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
28 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

978 
WWUS82 KFFC 040450
SPSFFC

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1250 AM EDT THU AUG 4 2011

GAZ005-007-012-013-021-040530-
1250 AM EDT THU AUG 4 2011

...SIGNIFICANT WEATHER ADVISORY FOR DIME SIZED HAIL AND 40 MPH WINDS
IN PICKENS...MURRAY...CHEROKEE...GILMER AND GORDON COUNTIES UNTIL 130
AM EDT...

AT 1244 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM OVER RAMHURST...MOVING SOUTH AT 20 MPH.

IN ADDITION TO THE WIND AND HAIL POTENTIAL...LIGHTNING DETECTION 
SYSTEMS INDICATE NUMEROUS CLOUD-TO-GROUND LIGHTNING STRIKES ACROSS 
PICKENS...MURRAY...CHEROKEE...GILMER AND GORDON COUNTIES...INCLUDING 
AREAS AROUND NORTH GEORGIA 
SPEEDWAY...RAMHURST...AUDUBON...CARTERS...REDBUD...OAKMAN...RANGER...
HINTON AND FAIRMOUNT. RESIDENTS IN THIS AREA SHOULD STAY INDOORS. 
ELECTRICAL APPLIANCES AND TELEPHONES SHOULD NOT BE USED UNLESS IN AN 
EMERGENCY.

&&

LAT...LON 3444 8454 3440 8465 3441 8465 3442 8473
      3440 8474 3440 8479 3440 8480 3471 8485
      3476 8467
TIME...MOT...LOC 0449Z 347DEG 23KT 3466 8475

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 4, 1:12 AM EDTSpecial Weather StatementFFCUnion, White48 min
Aug 4, 1:37 AM EDTSpecial Weather StatementFFCGordon38 min
Aug 4, 2:07 AM EDTSevere Thunderstorm WarningFFCBartow38 min
Aug 4, 2:53 AM EDTSpecial Weather StatementFFCPaulding22 min
Aug 4, 3:30 AM EDTSpecial Weather StatementFFCCobb, DeKalb, Douglas, Fulton, Paulding45 min
Aug 4, 4:02 AM EDTSpecial Weather StatementFFCFulton28 min
Aug 4, 4:32 AM EDTSpecial Weather StatementFFCFayette43 min
Aug 4, 1:22 PM EDTSpecial Weather StatementFFCFloyd23 min
Aug 4, 1:42 PM EDTSpecial Weather StatementFFCChattooga, Floyd33 min
Aug 4, 3:15 PM EDTSpecial Weather StatementFFCLaurens30 min
Aug 4, 3:17 PM EDTSpecial Weather StatementFFCWilkes28 min
Aug 4, 4:16 PM EDTHeat AdvisoryFFCBaldwin, Bibb, Bleckley, Chattahoochee, Clarke, Crawford and 40 more5 days

Nearby

Special Weather Statements in Georgia, 2011Every special weather statement in 2011

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.