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, 5:41 PM EDT for White County, Georgia. It was in force for 79 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, 5:41 PM EDT (21:41 UTC)
Expired: Aug 8, 2012, 7:00 PM EDT
In force: 79 min
Issued by: NWS Atlanta, GA

County White County, GA

The radar

The Greer radar (KGSP), 141 km from the middle of the area, began a volume at 21:42 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, 9.7 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.

749 
WWUS82 KFFC 082141
SPSFFC

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

GAZ016-082300-
541 PM EDT WED AUG 8 2012

...SIGNIFICANT WEATHER ADVISORY FOR HEAVY RAIN IN WHITE COUNTY UNTIL
700 PM EDT...

AT 531 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR ESTIMATED 
THAT BETWEEN ONE TO TWO AND A HALF INCHES OF RAIN HAD FALLEN IN 
PORTIONS OF WHITE COUNTY OVER THE LAST 2 HOURS...MOSTLY IN THE 
LEAF...MOSSY CREEK...AND ANNA RUBY FALLS AREAS.

RUNOFF FROM THESE STORMS WILL CAUSE RISES OF SMALL CREEKS AND 
STREAMS...PONDING ON PAVED AREAS...HIGHWAYS...STREETS AND 
UNDERPASSES ACROSS WHITE COUNTY...INCLUDING AREAS AROUND LOW GAP 
SHELTER...WHITLEY GAP SHELTER...SMITHGALL WOODS CONSERVATION 
AREA...UNICOI STATE PARK...ANNA RUBY 
FALLS...ROBERTSTOWN...HELEN...SAUTEE...LEAF...MOSSY 
CREEK...QUALATCHEE LAKE...CAMP COLEMAN LAKE AND CLEVELAND. 
ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS 
AND STREAMS ARE SUBJECT TO NUISANCE FLOODING.

&&

LAT...LON 3476 8363 3468 8363 3465 8365 3463 8363
      3459 8365 3454 8362 3450 8367 3450 8377
      3452 8378 3450 8384 3453 8383 3456 8387
      3472 8386 3473 8383 3478 8382 3480 8369
TIME...MOT...LOC 2136Z 021DEG 1KT 3464 8375

$$

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, 4:18 PM EDT	Special Weather Statement	FFC	White	27 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, 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.