Alert archive / Georgia / Special Weather Statements in 2012

Special Weather Statement, NWS Atlanta, GA

July 18, 2012Jackson County, Georgia

NWS Atlanta, GA issued this special weather statement at Jul 18, 2012, 4:02 PM EDT for Jackson County, Georgia. It was in force for 28 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, 4:02 PM EDT (20:02 UTC)
Expired: Jul 18, 2012, 4:30 PM EDT
In force: 28 min
Issued by: NWS Atlanta, GA

County Jackson County, GA

The radar

The Greer radar (KGSP), 130 km from the middle of the area, began a volume at 20:04 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, 8.0 hours before the alert went out and 140 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.

654 
WWUS82 KFFC 182002
SPSFFC

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

GAZ024-025-027-182030-
402 PM EDT WED JUL 18 2012

...SIGNIFICANT WEATHER ADVISORY FOR DIME SIZED HAIL AND 40 MPH WINDS
IN MADISON...BANKS AND JACKSON COUNTIES UNTIL 430 PM EDT...

AT 358 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM OVER FIVE POINTS...MOVING WEST 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
MADISON...BANKS AND JACKSON COUNTIES THROUGH 430 PM EDT. SOME
LOCATIONS IN THE PATH OF THIS STORM INCLUDE SANFORD...FIVE POINTS...
POCATALIGO...ILA...NICHOLSON...APPLE VALLEY...PEACH STATE SPEEDWAY...
COMMERCE...BANKS CROSSING AND MAYSVILLE. HEAVY DOWNPOURS WILL CAUSE
PONDING OF WATER ON ROADWAYS.

&&

LAT...LON 3409 8326 3404 8353 3426 8357 3427 8334
      3425 8332 3427 8330 3427 8329
TIME...MOT...LOC 2002Z 082DEG 3KT 3417 8338

$$

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, 2:39 PM EDT	Special Weather Statement	FFC	Oconee	36 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, 4:14 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.