Alert archive / Georgia / Special Weather Statements in 2012

Special Weather Statement, NWS Atlanta, GA

July 18, 2012Oconee County, Georgia

NWS Atlanta, GA issued this special weather statement at Jul 18, 2012, 2:39 PM EDT for Oconee County, Georgia. It was in force for 36 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: Jul 18, 2012, 2:39 PM EDT (18:39 UTC)
Expired: Jul 18, 2012, 3:15 PM EDT
In force: 36 min
Issued by: NWS Atlanta, GA

County Oconee County, GA

The radar

The Atlanta radar (KFFC), 123 km from the middle of the area, began a volume at 18:39 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, 6.7 hours before the alert went out and 117 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: 698 J/kg
Mixed-layer CIN: -70 J/kg
Mixed-layer LCL: 924 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 21 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.

987 
WWUS82 KFFC 181839
SPSFFC

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
239 PM EDT WED JUL 18 2012

GAZ036>038-181915-
239 PM EDT WED JUL 18 2012

...SIGNIFICANT WEATHER ADVISORY FOR DIME SIZED HAIL AND 40 MPH WINDS
IN OGLETHORPE...OCONEE AND CLARKE COUNTIES UNTIL 315 PM EDT...

AT 234 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM OVER BARNETT SHOALS...MOVING SOUTHEAST AT 5 MPH.

THIS STORM HAS THE POTENTIAL TO PRODUCE DIME SIZED HAIL...FREQUENT
CLOUD TO GROUND LIGHTNING AND WIND GUSTS TO 40 MPH AS IT MOVES ACROSS
OGLETHORPE...OCONEE AND CLARKE COUNTIES THROUGH 315 PM EDT. SOME
LOCATIONS IN THE PATH OF THIS STORM INCLUDE STATE BOTANICAL GARDEN OF
GEORGIA...WHITEHALL...EASTVILLE...BISHOP...WATKINSVILLE...BARNETT
SHOALS...SALEM...ROSE HILL...STEPHENS...MAXEYS AND FARMINGTON. HEAVY
DOWNPOURS WILL CAUSE PONDING OF WATER ON ROADWAYS.

&&

LAT...LON 3373 8321 3376 8328 3373 8330 3370 8341
      3374 8345 3377 8346 3378 8347 3389 8352
      3397 8330 3375 8313
TIME...MOT...LOC 1839Z 334DEG 4KT 3385 8335

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 10:17 PM EDT	Special Weather Statement	FFC	Catoosa, Dade	43 min
Jul 17, 10:34 PM EDT	Special Weather Statement	FFC	Bartow, Gordon	41 min
Jul 17, 10:59 PM EDT	Special Weather Statement	FFC	Catoosa, Dade, Walker	61 min
Jul 17, 11:54 PM EDT	Special Weather Statement	FFC	Dade	36 min
Jul 18, 1:09 AM EDT	Special Weather Statement	FFC	Haralson, Polk	36 min
Jul 18, 2:16 PM EDT	Special Weather Statement	FFC	Dawson	44 min
Jul 18, 3:01 PM EDT	Special Weather Statement	FFC	Lumpkin	29 min
Jul 18, 3:13 PM EDT	Special Weather Statement	FFC	White	32 min
Jul 18, 3:31 PM EDT	Special Weather Statement	FFC	Putnam	29 min
Jul 18, 3:36 PM EDT	Special Weather Statement	FFC	Hall	24 min
Jul 18, 3:38 PM EDT	Special Weather Statement	FFC	Lumpkin	52 min
Jul 18, 3:42 PM EDT	Special Weather Statement	FFC	Forsyth	48 min
Jul 18, 3:44 PM EDT	Special Weather Statement	FFC	Towns	31 min
Jul 18, 3:54 PM EDT	Special Weather Statement	FFC	Douglas	36 min
Jul 18, 4:02 PM EDT	Special Weather Statement	FFC	Jackson	28 min
Jul 18, 4:14 PM EDT	Special Weather Statement	FFC	Banks	31 min
Jul 18, 4:23 PM EDT	Special Weather Statement	FFC	Barrow	37 min
Jul 18, 4:33 PM EDT	Special Weather Statement	FFC	Gwinnett	42 min
Jul 18, 4:47 PM EDT	Severe Thunderstorm Warning	FFC	DeKalb, Gwinnett	43 min
Jul 18, 4:56 PM EDT	Special Weather Statement	FFC	Walker	49 min
Jul 18, 4:58 PM EDT	Special Weather Statement	FFC	DeKalb	32 min
Jul 18, 5:05 PM EDT	Special Weather Statement	FFC	Barrow	40 min
Jul 18, 5:18 PM EDT	Severe Thunderstorm Warning	FFC	Barrow, Oconee, Walton	42 min
Jul 18, 5:32 PM EDT	Special Weather Statement	FFC	Catoosa	28 min
Jul 18, 5:36 PM EDT	Severe Thunderstorm Warning	FFC	Newton, Walton	39 min
Jul 18, 5:47 PM EDT	Special Weather Statement	FFC	Henry	28 min
Jul 18, 5:50 PM EDT	Special Weather Statement	FFC	Jasper	25 min
Jul 18, 6:00 PM EDT	Special Weather Statement	FFC	Glascock	45 min
Jul 18, 6:06 PM EDT	Special Weather Statement	FFC	Gordon	39 min
Jul 18, 6:13 PM EDT	Special Weather Statement	FFC	Haralson	32 min
Jul 18, 6:24 PM EDT	Special Weather Statement	FFC	Jasper	36 min
Jul 18, 6:25 PM EDT	Severe Thunderstorm Warning	FFC	Jasper, Morgan, Newton	50 min
Jul 18, 6:27 PM EDT	Special Weather Statement	FFC	Gordon	48 min
Jul 18, 6:38 PM EDT	Severe Thunderstorm Warning	FFC	Gordon, Murray, Whitfield	52 min
Jul 18, 6:52 PM EDT	Special Weather Statement	FFC	Lamar, Pike	38 min
Jul 18, 6:55 PM EDT	Special Weather Statement	FFC	Paulding	50 min
Jul 18, 6:56 PM EDT	Special Weather Statement	FFC	Haralson	49 min
Jul 18, 7:13 PM EDT	Special Weather Statement	FFC	Pickens	47 min
Jul 18, 7:20 PM EDT	Special Weather Statement	FFC	Putnam	25 min
Jul 18, 7:22 PM EDT	Special Weather Statement	FFC	Murray	68 min
Jul 18, 7:31 PM EDT	Special Weather Statement	FFC	Bartow	44 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.