Alert archive / Georgia / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 6, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Feb 25, 2011, 2:43 AM EST for 5 counties in Georgia. It was in force for 62 min. 1 report 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
- Feb 25, 2011, 2:43 AM EST (07:43 UTC)
- Expired
- Feb 25, 2011, 3:45 AM EST
- In force
- 62 min
- Issued by
- NWS Atlanta, GA
- Area
- Storm-based polygon
Counties Carroll County, GA, Cobb County, GA, Douglas County, GA, Fulton County, GA, Hall County, GA
The radar
The Atlanta radar (KFFC), 56 km from the middle of the area, began a volume at 07:44 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 |
|---|---|---|---|
| Feb 25, 3:30 AM EST | TSTM WND DMG | 10 W East Point, GA | ONE POWER LINE DOWN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Feb 24, 11:59 PM EST | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 7.7 hours before the alert went out and 55 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
- 2 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 1511 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 137 m²/s²
- 0-3 km storm-relative helicity
- 274 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
407
WUUS52 KFFC 250743
SVRFFC
GAC045-067-097-121-139-250845-
/O.NEW.KFFC.SV.W.0006.110225T0743Z-110225T0845Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
243 AM EST FRI FEB 25 2011
THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
COBB COUNTY IN NORTH CENTRAL GEORGIA
DOUGLAS COUNTY IN NORTH CENTRAL GEORGIA
FULTON COUNTY IN NORTH CENTRAL GEORGIA
EXTREME SOUTHWESTERN HALL COUNTY IN NORTH CENTRAL GEORGIA
SOUTHEASTERN CARROLL COUNTY IN NORTHWEST GEORGIA
* UNTIL 345 AM EST
* AT 242 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS
UP TO 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM 11 MILES WEST OF ACWORTH TO 17 MILES WEST OF DOUGLASVILLE TO
25 MILES WEST OF WHITESBURG...MOVING EAST AT 50 MPH.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
KENNESAW...POWDER SPRINGS...MARIETTA...DOUGLASVILLE...MOUNTAIN
PARK...LITHIA SPRINGS...AUSTELL...MILTON...SMYRNA...ROSWELL...
CHATTAHOOCHEE HILL COUNTRY...ALPHARETTA...PALMETTO...SANDY
SPRINGS...FAIRBURN...JOHNS CREEK...UNION CITY...BUCKHEAD...
MIDTOWN...COLLEGE PARK...EAST POINT...ATLANTA...HAPEVILLE AND GRANT
PARK-ZOO ATLANTA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS.
IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT 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.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 AM EST FRIDAY
MORNING FOR NORTHERN GEORGIA.
&&
LAT...LON 3379 8478 3379 8471 3408 8474 3408 8442
3418 8435 3419 8426 3411 8425 3406 8414
3419 8405 3418 8405 3404 8413 3395 8427
3396 8434 3365 8434 3365 8445 3355 8446
3350 8461 3351 8484 3344 8493 3343 8510
TIME...MOT...LOC 0742Z 259DEG 44KT 3404 8482 3383 8499
3357 8530
$$2 follow-up statements
085
WWUS52 KFFC 250807
SVSFFC
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
307 AM EST FRI FEB 25 2011
GAC139-250815-
/O.CAN.KFFC.SV.W.0006.000000T0000Z-110225T0845Z/
HALL GA-
307 AM EST FRI FEB 25 2011
...THE SEVERE THUNDERSTORM WARNING FOR EXTREME SOUTHWESTERN HALL
COUNTY IS CANCELLED...
THE NORTHERN PORTION OF THE LINE OF THUNDERSTORMS HAS WEAKENED.
HOWEVER... WINDS OF 45 MPH ARE POSSIBLE AS THE LINE OF STORMS MOVES
ACROSS THE COUNTY BETWEEN 3 AM EST AND 4 AM EST.
IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL AFTER THE STORM HAS PASSED...AND THEN CALL THE NATIONAL WEATHER
SERVICE TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 AM EST FRIDAY
MORNING FOR NORTHERN GEORGIA.
LAT...LON 3378 8479 3379 8471 3408 8474 3408 8442
3418 8435 3419 8426 3411 8425 3406 8414
3406 8418 3404 8415 3400 8423 3395 8427
3396 8434 3365 8434 3365 8445 3355 8446
3350 8461 3351 8483 3344 8493 3343 8510
TIME...MOT...LOC 0805Z 259DEG 44KT 3409 8448 3388 8466
3362 8497
$$
GAC045-067-097-121-250845-
/O.CON.KFFC.SV.W.0006.000000T0000Z-110225T0845Z/
DOUGLAS GA-CARROLL GA-COBB GA-FULTON GA-
307 AM EST FRI FEB 25 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 AM EST
FOR FULTON...COBB...SOUTHEASTERN CARROLL AND DOUGLAS COUNTIES...
AT 303 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF STRONG TO SEVERE THUNDERSTORMS CAPABLE OF
PRODUCING DAMAGING WINDS UP TO 60 MPH. THESE STORMS WERE LOCATED
ALONG A LINE EXTENDING FROM NEAR SWEAT MOUNTAIN TO POWDER SPRINGS TO
6 MILES NORTH OF CLEM...AND MOVING EAST AT 50 MPH.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS.
IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL AFTER 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.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 AM EST FRIDAY
MORNING FOR NORTHERN GEORGIA.
&&
LAT...LON 3378 8479 3379 8471 3408 8474 3408 8442
3418 8435 3419 8426 3411 8425 3406 8414
3406 8418 3404 8415 3400 8423 3395 8427
3396 8434 3365 8434 3365 8445 3355 8446
3350 8461 3351 8483 3344 8493 3343 8510
TIME...MOT...LOC 0805Z 259DEG 44KT 3409 8448 3388 8466
3362 8497
$$432
WWUS52 KFFC 250841
SVSFFC
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
341 AM EST FRI FEB 25 2011
GAC045-067-097-121-250848-
/O.EXP.KFFC.SV.W.0006.000000T0000Z-110225T0845Z/
DOUGLAS GA-CARROLL GA-COBB GA-FULTON GA-
341 AM EST FRI FEB 25 2011
...THE SEVERE THUNDERSTORM WARNING FOR FULTON...COBB...SOUTHEASTERN
CARROLL AND DOUGLAS COUNTIES WILL BE ALLOWED TO EXPIRE AT 345 AM
EST...
AT 340 AM EST...NATIONAL WEATHER SERVICE DOPPLER INDICATED THE LINE
OF THUNDERSTORMS HAS WEAKENED BELOW SEVERE LIMITS...AND THEREFORE
THE WARNING WILL BE ALLOWED TO EXPIRE.
ALTHOUGH THE LINE OF STORMS HAS WEAKENED... WIND GUSTS TO 45 MPH ARE
STILL POSSIBLE. AT 340 AM EST... THE LINE OF STORMS EXTENDED FROM
ABOUT 10 MILES NORTHEAST OF JOHNS CREEK TO NEAR FAIRBURN... AND
MOVING EAST AT 45 MPH. A WEAKENING TREND IS EXPECTED TO CONTINUE.
IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL AFTER THE STORM HAS PASSED...AND THEN CALL THE NATIONAL WEATHER
SERVICE TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 500 AM EST FRIDAY
MORNING FOR NORTHERN GEORGIA.
LAT...LON 3378 8479 3379 8471 3408 8474 3408 8442
3418 8435 3419 8426 3411 8425 3406 8414
3406 8418 3404 8415 3400 8423 3395 8427
3396 8434 3365 8434 3365 8445 3355 8446
3350 8461 3351 8483 3344 8493 3343 8510
TIME...MOT...LOC 0838Z 259DEG 44KT 3417 8400 3396 8418
3354 8458
$$The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 25, 1:12 AM EST | Severe Thunderstorm Warning | FFC | Catoosa, Chattooga, Dade, Floyd, Walker | 63 min |
| Feb 25, 1:48 AM EST | Severe Thunderstorm Warning | FFC | Bartow, Floyd, Gordon, Murray, Whitfield | 57 min |
| Feb 25, 1:51 AM EST | Severe Thunderstorm Warning | FFC | Carroll, Douglas, Haralson, Paulding, Polk | 54 min |
| Feb 25, 2:25 AM EST | Severe Thunderstorm Warning | FFC | Cherokee, Fannin, Gilmer, Pickens | 54 min |
| Feb 25, 2:36 AM EST | Severe Thunderstorm Warning | FFC | Carroll, Coweta, Heard, Troup | 54 min |
| Feb 25, 2:48 AM EST | Severe Thunderstorm Warning | FFC | Carroll, Haralson, Paulding | 27 min |
| Feb 25, 3:19 AM EST | Wind Advisory | FFC | Baldwin, Banks, Barrow, Bartow, Bibb, Bleckley and 90 more | 13 hr |
Nearby
Severe Thunderstorm Warnings in Georgia, 2011Every severe thunderstorm warning in 2011
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.