Alert archive / Georgia / Special Weather Statements in 2011

Special Weather Statement, NWS Atlanta, GA

August 4, 2011Union County, White County, Georgia

NWS Atlanta, GA issued this special weather statement at Aug 4, 2011, 1:12 AM EDT for Union County, White County, Georgia. It was in force for 48 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, 1:12 AM EDT (05:12 UTC)
Expired
Aug 4, 2011, 2:00 AM EDT
In force
48 min
Issued by
NWS Atlanta, GA

Counties Union County, GA, White County, GA

The radar

The Greer radar (KGSP), 145 km from the middle of the area, began a volume at 05:11 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, 5.2 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 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.

214 
WWUS82 KFFC 040512
SPSFFC

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

GAZ008-015-016-040600-
112 AM EDT THU AUG 4 2011

...SIGNIFICANT WEATHER ADVISORY FOR PEA SIZED HAIL AND 40 MPH WINDS
IN WHITE...UNION AND LUMPKIN COUNTIES UNTIL 200 AM EDT...

AT 107 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM OVER BLAIRSVILLE...MOVING SOUTHEAST AT 10 MPH.

IN ADDITION TO THE WIND AND HAIL POTENTIAL...LIGHTNING DETECTION 
SYSTEMS INDICATE NUMEROUS CLOUD-TO-GROUND LIGHTNING STRIKES ACROSS 
WHITE...UNION AND LUMPKIN COUNTIES...INCLUDING AREAS AROUND 
BLAIRSVILLE...TRACK ROCK...OWLTOWN...VOGEL STATE PARK...BLOOD 
MOUNTAIN SHELTER...WOODS HOLE SHELTER...LOW GAP SHELTER...WHITLEY 
GAP SHELTER...QUALATCHEE LAKE...SMITHGALL WOODS CONSERVATION 
AREA...CAMP COLEMAN LAKE...UNICOI STATE PARK...ANNA RUBY 
FALLS...ROBERTSTOWN AND HELEN. RESIDENTS IN THIS AREA SHOULD STAY 
INDOORS. ELECTRICAL APPLIANCES AND TELEPHONES SHOULD NOT BE USED 
UNLESS IN AN EMERGENCY.

&&

LAT...LON 3484 8379 3483 8380 3482 8378 3479 8377
      3480 8374 3475 8367 3454 8369 3461 8391
      3484 8405 3491 8390
TIME...MOT...LOC 0511Z 324DEG 7KT 3485 8394

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 4, 12:50 AM EDTSpecial Weather StatementFFCGordon40 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.