Alert archive / Georgia / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 75, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Apr 4, 2012, 7:52 PM EDT for Cobb County, DeKalb County, Fulton County, Georgia. It was in force for 38 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Apr 4, 2012, 7:52 PM EDT (23:52 UTC)
- Expired
- Apr 4, 2012, 8:30 PM EDT
- In force
- 38 min
- Issued by
- NWS Atlanta, GA
- Area
- Storm-based polygon
Counties Cobb County, GA, DeKalb County, GA, Fulton County, GA
The radar
The Atlanta radar (KFFC), 61 km from the middle of the area, began a volume at 23:53 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 4, 7:55 PM EDT | HAIL 1 | 3 E Powder Springs, GA | THE PUBLIC REPORTED QUARTER SIZED HAIL NEAR POWDER SPRINGS. |
| Apr 4, 8:00 PM EDT | HAIL 1 | 6 Sw Marietta, GA | THE PUBLIC REPORTED QUARTER SIZED HAIL ON PAIR ROAD. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 11.9 hours before the alert went out and 59 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.
- Mixed-layer CAPE
- 233 J/kg
- Mixed-layer CIN
- -70 J/kg
- Mixed-layer LCL
- 918 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 46 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
055
WUUS52 KFFC 042352
SVRFFC
GAC067-089-121-050030-
/O.NEW.KFFC.SV.W.0075.120404T2352Z-120405T0030Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
752 PM EDT WED APR 4 2012
THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN COBB COUNTY IN NORTH CENTRAL GEORGIA
NORTHWESTERN DEKALB COUNTY IN NORTH CENTRAL GEORGIA
CENTRAL FULTON COUNTY IN NORTH CENTRAL GEORGIA
* UNTIL 830 PM EDT
* AT 748 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
AUSTELL...MOVING EAST AT 30 MPH.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
MARIETTA...SMYRNA...BUCKHEAD...SANDY SPRINGS...DUNWOODY...
CHAMBLEE...CLARKSTON AND DORAVILLE.
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 3403 8429 3397 8426 3396 8428 3391 8424
3381 8421 3377 8460 3380 8463 3381 8471
3392 8472
TIME...MOT...LOC 2352Z 258DEG 25KT 3386 8460
$$2 follow-up statements
022
WWUS52 KFFC 050010
SVSFFC
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
810 PM EDT WED APR 4 2012
GAC067-089-121-050030-
/O.CON.KFFC.SV.W.0075.000000T0000Z-120405T0030Z/
COBB GA-DEKALB GA-FULTON GA-
810 PM EDT WED APR 4 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM EDT
FOR CENTRAL FULTON...NORTHWESTERN DEKALB AND SOUTHEASTERN COBB
COUNTIES...
AT 807 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM THAT HAS PRODUCED QUARTER SIZED HAIL
AND IS STILL CAPABLE OF PRODUCING QUARTER SIZED HAIL AND DAMAGING
WINDS UP TO 60 MPH. THIS STORM WAS LOCATED NEAR SMYRNA...MOVING EAST
AT 30 MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
BOLTON...VININGS...ATLANTIC STATION...CHASTAIN MEMORIAL PARK...
BUCKHEAD...MOUNT BETHEL...SANDY SPRINGS...LA VISTA...BROOKHAVEN...
DUNWOODY...CLARKSTON...DORAVILLE AND CHAMBLEE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU SEE WIND DAMAGE...HAIL OR FLOODING...WAIT UNTIL THE STORM HAS
PASSED...AND THEN CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1 8
6 6 7 6 3 4 4 6 6. YOU CAN ALSO TWEET YOUR REPORT USING HASHTAG GAWX.
&&
LAT...LON 3403 8429 3397 8426 3396 8428 3394 8427
3392 8426 3390 8424 3381 8421 3377 8460
3382 8464 3393 8465
TIME...MOT...LOC 0009Z 258DEG 25KT 3388 8448
$$020
WWUS52 KFFC 050029
SVSFFC
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
829 PM EDT WED APR 4 2012
GAC067-089-121-050036-
/O.EXP.KFFC.SV.W.0075.000000T0000Z-120405T0030Z/
COBB GA-DEKALB GA-FULTON GA-
829 PM EDT WED APR 4 2012
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL FULTON...NORTHWESTERN
DEKALB AND SOUTHEASTERN COBB COUNTIES EXPIRES AT 830 PM EDT...
AT 823 PM EDT...THE THUNDERSTORM WAS WEAKENING AND THUS THE WARNING
WILL BE ALLOWED TO EXPIRE AT 830 PM EDT. ALTHOUGH THE STORM WAS
WEAKENING IT IS STILL CAPABLE OF PRODUCING DIME SIZED HAIL AND WIND
GUSTS TO 40 MPH. THE STORM WAS LOCATED NEAR CHASTAIN MEMORIAL
PARK...MOVING EAST AT 30 MPH.
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 3403 8429 3397 8426 3396 8428 3394 8427
3392 8426 3390 8424 3381 8421 3377 8460
3382 8464 3393 8465
TIME...MOT...LOC 0026Z 258DEG 25KT 3390 8434
$$The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 3, 8:48 PM EDT | Special Weather Statement | FFC | Clarke | 27 min |
| Apr 3, 8:50 PM EDT | Special Weather Statement | FFC | Johnson | 25 min |
| Apr 3, 8:52 PM EDT | Special Weather Statement | FFC | Bibb, Jones | 38 min |
| Apr 3, 8:55 PM EDT | Special Weather Statement | FFC | Oglethorpe | 35 min |
| Apr 3, 9:24 PM EDT | Special Weather Statement | FFC | Warren | 36 min |
| Apr 3, 9:46 PM EDT | Special Weather Statement | FFC | Wilkes | 29 min |
| Apr 3, 9:49 PM EDT | Special Weather Statement | FFC | Barrow | 26 min |
| Apr 3, 10:15 PM EDT | Special Weather Statement | FFC | Barrow | 60 min |
| Apr 4, 3:24 PM EDT | Special Weather Statement | FFC | Taliaferro | 36 min |
| Apr 4, 6:49 PM EDT | Special Weather Statement | FFC | Carroll | 26 min |
| Apr 4, 7:20 PM EDT | Special Weather Statement | FFC | Douglas | 25 min |
| Apr 4, 7:44 PM EDT | Special Weather Statement | FFC | Cobb, Fulton | 46 min |
Nearby
Severe Thunderstorm Warnings in Georgia, 2012Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.