Alert archive / Georgia / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 252, NWS Atlanta, GA

July 9, 20124 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 9, 2012, 6:22 PM EDT for 4 counties in Georgia. It was in force for 53 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 9, 2012, 6:22 PM EDT (22:22 UTC)
Expired: Jul 9, 2012, 7:15 PM EDT
In force: 53 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon

Counties Barrow County, GA, Morgan County, GA, Oconee County, GA, Walton County, GA

The radar

The Atlanta radar (KFFC), 113 km from the middle of the area, began a volume at 22:25 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, 10.4 hours before the alert went out and 108 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: 1537 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 787 m above ground
0-6 km bulk shear: 1 kt
0-1 km storm-relative helicity: -42 m²/s²
0-3 km storm-relative helicity: -32 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.

850 
WUUS52 KFFC 092222
SVRFFC
GAC013-211-219-297-092315-
/O.NEW.KFFC.SV.W.0252.120709T2222Z-120709T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
622 PM EDT MON JUL 9 2012

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN BARROW COUNTY IN NORTH CENTRAL GEORGIA
  NORTH CENTRAL MORGAN COUNTY IN NORTH CENTRAL GEORGIA
  NORTHEASTERN WALTON COUNTY IN NORTH CENTRAL GEORGIA
  NORTHWESTERN OCONEE COUNTY IN NORTHEAST GEORGIA

* UNTIL 715 PM EDT

* AT 621 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZED HAIL...AND
  DAMAGING WINDS UP TO 60 MPH.  THIS STORM WAS LOCATED NEAR GOOD
  HOPE...MOVING EAST AT 5 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  STATHAM...NORTH HIGH SHOALS...BOGART...BISHOP AND WATKINSVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU SEE WIND DAMAGE...HAIL OR FLOODING...WAIT UNTIL THE STORM HAS
PASSED...AND THEN CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1 8
6 6 7 6 3 4 4 6 6. YOU CAN ALSO TWEET YOUR REPORT USING HASHTAG GAWX.

&&

LAT...LON 3401 8355 3398 8355 3393 8351 3393 8346
      3384 8338 3372 8360 3388 8376 3404 8358
TIME...MOT...LOC 2223Z 257DEG 6KT 3384 8364

$$

2 follow-up statements

098 
WWUS52 KFFC 092234
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
634 PM EDT MON JUL 9 2012

GAC013-211-219-297-092315-
/O.CON.KFFC.SV.W.0252.000000T0000Z-120709T2315Z/
WALTON GA-OCONEE GA-MORGAN GA-BARROW GA-
634 PM EDT MON JUL 9 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR SOUTHEASTERN BARROW...EXTREME NORTH CENTRAL MORGAN...NORTHWESTERN
OCONEE AND NORTHEASTERN WALTON COUNTIES...

AT 630 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZED
HAIL...AND DAMAGING WINDS UP TO 60 MPH. THIS STORM WAS LOCATED NEAR
MOUNT VERNON...MOVING EAST AT 5 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
STATHAM...EASTVILLE...NORTH HIGH SHOALS...BOGART...BISHOP AND
WATKINSVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU SEE WIND DAMAGE...HAIL OR FLOODING...WAIT UNTIL THE STORM HAS
PASSED...AND THEN CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1 8
6 6 7 6 3 4 4 6 6. YOU CAN ALSO TWEET YOUR REPORT USING HASHTAG GAWX.

&&

LAT...LON 3401 8355 3398 8355 3393 8351 3393 8347
      3384 8338 3374 8358 3390 8371 3404 8358
TIME...MOT...LOC 2235Z 257DEG 6KT 3384 8362

$$

045 
WWUS52 KFFC 092307 RRA
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
707 PM EDT MON JUL 9 2012

GAC013-211-219-297-092318-
/O.EXP.KFFC.SV.W.0252.000000T0000Z-120709T2315Z/
WALTON GA-OCONEE GA-MORGAN GA-BARROW GA-
707 PM EDT MON JUL 9 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BARROW...EXTREME
NORTH CENTRAL MORGAN...NORTHWESTERN OCONEE AND NORTHEASTERN WALTON
COUNTIES EXPIRES AT 715 PM EDT...

AT 702 PM EDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF
PRODUCING QUARTER SIZED HAIL...AND DAMAGING WINDS UP TO 60 MPH. THIS
STORM WAS LOCATED NEAR NORTH HIGH SHOALS...MOVING EAST AT 5 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
EASTVILLE...BOGART...BISHOP AND WATKINSVILLE.

IF YOU SEE WIND DAMAGE...HAIL OR FLOODING...WAIT UNTIL THE STORM HAS
PASSED...AND THEN CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1 8
6 6 7 6 3 4 4 6 6. YOU CAN ALSO TWEET YOUR REPORT USING HASHTAG GAWX.

LAT...LON 3401 8355 3398 8355 3393 8351 3393 8347
      3384 8338 3374 8358 3390 8371 3403 8358
TIME...MOT...LOC 2308Z 257DEG 6KT 3385 8356

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 8:53 PM EDT	Severe Thunderstorm Warning	FFC	Towns	52 min
Jul 9, 2:09 PM EDT	Special Weather Statement	FFC	Murray	36 min
Jul 9, 4:02 PM EDT	Special Weather Statement	FFC	Lumpkin	28 min
Jul 9, 4:09 PM EDT	Special Weather Statement	FFC	Henry, Rockdale	36 min
Jul 9, 4:31 PM EDT	Special Weather Statement	FFC	Bibb	44 min
Jul 9, 4:53 PM EDT	Special Weather Statement	FFC	Jones	37 min
Jul 9, 5:03 PM EDT	Special Weather Statement	FFC	Newton, Rockdale	27 min
Jul 9, 5:05 PM EDT	Special Weather Statement	FFC	Oconee	40 min
Jul 9, 5:16 PM EDT	Special Weather Statement	FFC	Morgan	29 min
Jul 9, 5:22 PM EDT	Special Weather Statement	FFC	Wilkinson	38 min
Jul 9, 5:30 PM EDT	Special Weather Statement	FFC	Twiggs	30 min
Jul 9, 5:38 PM EDT	Special Weather Statement	FFC	Walton	37 min
Jul 9, 5:57 PM EDT	Special Weather Statement	FFC	Greene	33 min
Jul 9, 6:12 PM EDT	Special Weather Statement	FFC	Wilkinson	33 min
Jul 9, 6:13 PM EDT	Special Weather Statement	FFC	Oconee, Walton	32 min
Jul 9, 6:19 PM EDT	Special Weather Statement	FFC	Newton	26 min
Jul 9, 6:26 PM EDT	Severe Thunderstorm Warning	FFC	Jasper, Morgan, Newton	49 min
Jul 9, 6:31 PM EDT	Special Weather Statement	FFC	Hancock, Taliaferro, Warren	29 min
Jul 9, 6:35 PM EDT	Severe Thunderstorm Warning	FFC	Hancock, Warren	40 min
Jul 9, 6:37 PM EDT	Special Weather Statement	FFC	Laurens	38 min
Jul 9, 6:41 PM EDT	Special Weather Statement	FFC	Crisp	34 min
Jul 9, 6:42 PM EDT	Special Weather Statement	FFC	Sumter	33 min
Jul 9, 6:54 PM EDT	Severe Thunderstorm Warning	FFC	Sumter, Webster	38 min
Jul 9, 7:02 PM EDT	Special Weather Statement	FFC	Clarke	28 min
Jul 9, 7:05 PM EDT	Special Weather Statement	FFC	Fulton	25 min
Jul 9, 7:06 PM EDT	Special Weather Statement	FFC	Warren	24 min
Jul 9, 7:11 PM EDT	Special Weather Statement	FFC	Madison	34 min
Jul 9, 7:14 PM EDT	Special Weather Statement	FFC	Hancock	31 min
Jul 9, 7:20 PM EDT	Severe Thunderstorm Warning	FFC	Hancock, Washington	25 min
Jul 9, 7:32 PM EDT	Special Weather Statement	FFC	Fulton	28 min
Jul 9, 7:45 PM EDT	Special Weather Statement	FFC	Haralson	30 min
Jul 9, 7:50 PM EDT	Special Weather Statement	FFC	Butts	25 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2012 Every severe thunderstorm warning 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.