Alert archive / Georgia / Special Weather Statements in 2012

Special Weather Statement, NWS Atlanta, GA

August 8, 2012White County, Georgia

NWS Atlanta, GA issued this special weather statement at Aug 8, 2012, 4:18 PM EDT for White County, Georgia. It was in force for 27 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 8, 2012, 4:18 PM EDT (20:18 UTC)
Expired: Aug 8, 2012, 4:45 PM EDT
In force: 27 min
Issued by: NWS Atlanta, GA

County White County, GA

The radar

The Greer radar (KGSP), 143 km from the middle of the area, began a volume at 20:21 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, 8.3 hours before the alert went out and 157 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 713 J/kg
Mixed-layer CIN: -87 J/kg
Mixed-layer LCL: 744 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -9 m²/s²
0-3 km storm-relative helicity: 5 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.

034 
WWUS82 KFFC 082018
SPSFFC

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
418 PM EDT WED AUG 8 2012

GAZ016-082045-
418 PM EDT WED AUG 8 2012

...SIGNIFICANT WEATHER ADVISORY FOR PEA SIZED HAIL AND 45 MPH WINDS
IN WHITE COUNTY UNTIL 445 PM EDT...

AT 413 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS FROM 5 MILES EAST OF SAUTEE TO LEAF...MOVING
SOUTHEAST AT 5 MPH.

THESE STORMS HAVE THE POTENTIAL TO PRODUCE PEA SIZED HAIL...FREQUENT
CLOUD TO GROUND LIGHTNING AND WIND GUSTS TO 45 MPH AS THEY MOVE
ACROSS WHITE COUNTY THROUGH 445 PM EDT. SOME LOCATIONS IN THE PATH OF
THESE STORMS INCLUDE WHITLEY GAP SHELTER...QUALATCHEE LAKE...
SMITHGALL WOODS CONSERVATION AREA...CAMP COLEMAN LAKE...UNICOI STATE
PARK...ANNA RUBY FALLS...ROBERTSTOWN...HELEN...SAUTEE...CLEVELAND...
LEAF AND MOSSY CREEK. HEAVY DOWNPOURS WILL CAUSE PONDING OF WATER ON
ROADWAYS.

THESE WIND GUSTS MAY PRODUCE MINOR DAMAGE TO TREE LIMBS AND BLOW
LIGHT...UNSECURED OBJECTS AROUND.

&&

LAT...LON 3476 8363 3465 8365 3454 8361 3450 8366
      3450 8377 3451 8378 3450 8384 3453 8383
      3456 8387 3468 8387 3472 8386 3473 8383
      3479 8381 3480 8369
TIME...MOT...LOC 2018Z 315DEG 5KT 3466 8358 3458 8366

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 7, 8:12 PM EDT	Flash Flood Warning	FFC	Banks, Jackson, Madison	2 hr
Aug 7, 8:58 PM EDT	Special Weather Statement	FFC	Jones, Monroe	62 min
Aug 8, 4:38 PM EDT	Special Weather Statement	FFC	White	37 min
Aug 8, 5:10 PM EDT	Special Weather Statement	FFC	Hall	35 min
Aug 8, 5:16 PM EDT	Severe Thunderstorm Warning	FFC	Banks, Hall	44 min
Aug 8, 5:31 PM EDT	Special Weather Statement	FFC	Jackson	29 min
Aug 8, 5:41 PM EDT	Special Weather Statement	FFC	White	79 min
Aug 8, 6:00 PM EDT	Special Weather Statement	FFC	Jackson	90 min
Aug 8, 6:01 PM EDT	Special Weather Statement	FFC	Clarke, Oconee	29 min
Aug 8, 6:05 PM EDT	Special Weather Statement	FFC	Hall	25 min
Aug 8, 6:16 PM EDT	Special Weather Statement	FFC	Bartow, Floyd	29 min
Aug 8, 6:27 PM EDT	Special Weather Statement	FFC	Clarke, Oconee	63 min
Aug 8, 6:30 PM EDT	Special Weather Statement	FFC	Whitfield	30 min
Aug 8, 6:34 PM EDT	Special Weather Statement	FFC	Hall	26 min
Aug 8, 6:47 PM EDT	Special Weather Statement	FFC	Barrow	28 min
Aug 8, 7:01 PM EDT	Special Weather Statement	FFC	Whitfield	29 min
Aug 8, 7:16 PM EDT	Special Weather Statement	FFC	Barrow, Gwinnett, Walton	29 min
Aug 8, 7:38 PM EDT	Special Weather Statement	FFC	Gordon	37 min
Aug 8, 7:41 PM EDT	Special Weather Statement	FFC	DeKalb, Gwinnett, Walton	34 min
Aug 8, 7:55 PM EDT	Special Weather Statement	FFC	Chattooga	35 min

Nearby

Special Weather Statements in Georgia, 2012 Every special weather statement in 2012

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.