Alert archive / Georgia / Special Weather Statements in 2012

Special Weather Statement, NWS Atlanta, GA

August 8, 2012Jackson County, Georgia

NWS Atlanta, GA issued this special weather statement at Aug 8, 2012, 5:31 PM EDT for Jackson County, Georgia. It was in force for 29 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, 5:31 PM EDT (21:31 UTC)
Expired: Aug 8, 2012, 6:00 PM EDT
In force: 29 min
Issued by: NWS Atlanta, GA

County Jackson County, GA

The radar

The Atlanta radar (KFFC), 125 km from the middle of the area, began a volume at 21:31 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, 9.5 hours before the alert went out and 120 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.

232 
WWUS82 KFFC 082131
SPSFFC

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

GAZ025-082200-
531 PM EDT WED AUG 8 2012

...SIGNIFICANT WEATHER ADVISORY FOR NICKEL SIZED HAIL AND 50 MPH
WINDS IN JACKSON COUNTY UNTIL 600 PM EDT...

AT 527 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
NEARLY STATIONARY STRONG THUNDERSTORM NEAR PEACH STATE SPEEDWAY.

THIS STORM HAS THE POTENTIAL TO PRODUCE NICKEL SIZED HAIL...FREQUENT
CLOUD TO GROUND LIGHTNING AND WIND GUSTS TO 50 MPH AS IT MOVES ACROSS
JACKSON COUNTY THROUGH 600 PM EDT. SOME LOCATIONS IN THE PATH OF THIS
STORM INCLUDE CENTER...BEAR CREEK RESERVOIR...ARCADE...NICHOLSON...
APPLE VALLEY...JEFFERSON...PEACH STATE SPEEDWAY...COMMERCE...
HOSCHTON...BRASELTON...PENDERGRASS...TALMO AND MAYSVILLE. HEAVY
DOWNPOURS WILL CAUSE PONDING OF WATER ON ROADWAYS.

CONTINUE TO MONITOR NOAA WEATHER RADIO...WEATHER.GOV OR OTHER MEDIA
OUTLETS FOR FURTHER STATEMENTS OR POSSIBLE WARNINGS ON THESE STORMS.

&&

LAT...LON 3425 8357 3426 8348 3416 8336 3412 8335
      3405 8339 3404 8336 3399 8347 3400 8350
      3397 8354 3404 8358 3406 8370 3405 8371
      3407 8377 3413 8382 3429 8362
TIME...MOT...LOC 2131Z 115DEG 1KT 3417 8358

$$

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, 5:41 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.