Alert archive / Georgia / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 476, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Aug 11, 2011, 2:30 PM EDT for 6 counties in Georgia. It was in force for 45 min. 4 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
- Aug 11, 2011, 2:30 PM EDT (18:30 UTC)
- Expired
- Aug 11, 2011, 3:15 PM EDT
- In force
- 45 min
- Issued by
- NWS Atlanta, GA
- Area
- Storm-based polygon
Counties Chattahoochee County, GA, Harris County, GA, Marion County, GA, Muscogee County, GA, Talbot County, GA, Taylor County, GA
The radar
The Atlanta radar (KFFC), 84 km from the middle of the area, began a volume at 18:31 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 |
|---|---|---|---|
| Aug 11, 2:31 PM EDT | TSTM WND DMG | 1 Ne Waverly Hall, GA | WAVERLY HALL POLICE DEPARTMENT REPORTS SEVERAL TREES AND LINES DOWN ON GA HWY 85 HEADING TOWARDS MANCHESTER. |
| Aug 11, 2:35 PM EDT | TSTM WND DMG | Waverly Hall, GA | WTVM-TV RELAYED REPORTS OF A FEW DOWNED TREES AND POWERLINES IN WAVERLY HALL. |
| Aug 11, 2:42 PM EDT | HAIL 0.25 | Box Springs, GA | BOX SPRINGS POST OFFICE REPORTS HAIL OF UNKNOWN SIZE AND GUSTY WINDS. |
| Aug 11, 2:54 PM EDT | TSTM WND DMG | 2 Ese Oakland, GA | MARION COUNTY 911 RELAYED REPORTS OF A COUPLE OF DOWNED TREES. |
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, 6.5 hours before the alert went out and 85 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
- 764 J/kg
- Mixed-layer CIN
- -95 J/kg
- Mixed-layer LCL
- 1287 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 66 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
846 WUUS52 KFFC 111830 SVRFFC GAC053-145-197-215-263-269-111915- /O.NEW.KFFC.SV.W.0476.110811T1830Z-110811T1915Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PEACHTREE CITY GA 230 PM EDT THU AUG 11 2011 THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EXTREME NORTHEASTERN CHATTAHOOCHEE COUNTY IN WEST CENTRAL GEORGIA SOUTHEASTERN HARRIS COUNTY IN WEST CENTRAL GEORGIA NORTHERN MARION COUNTY IN WEST CENTRAL GEORGIA NORTHEASTERN MUSCOGEE COUNTY IN WEST CENTRAL GEORGIA SOUTHERN TALBOT COUNTY IN WEST CENTRAL GEORGIA WEST CENTRAL TAYLOR COUNTY IN WEST CENTRAL GEORGIA * UNTIL 315 PM EDT * AT 227 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 WAVERLY HALL...MOVING SOUTHEAST AT 35 MPH. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO TALBOTTON...GENEVA AND JUNCTION CITY. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. && LAT...LON 3260 8427 3236 8451 3269 8489 3280 8476 TIME...MOT...LOC 1829Z 309DEG 29KT 3269 8473 $$
2 follow-up statements
673
WWUS52 KFFC 111855
SVSFFC
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
255 PM EDT THU AUG 11 2011
GAC145-215-111904-
/O.CAN.KFFC.SV.W.0476.000000T0000Z-110811T1915Z/
MUSCOGEE GA-HARRIS GA-
255 PM EDT THU AUG 11 2011
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HARRIS AND
NORTHEASTERN MUSCOGEE COUNTIES IS CANCELLED...
THE THUNDERSTORM THAT PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL AFTER THE STORM HAS PASSED...AND THEN CALL THE NATIONAL WEATHER
SERVICE TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.
LAT...LON 3252 8469 3255 8467 3257 8469 3271 8470
3273 8468 3274 8469 3277 8469 3260 8427
3236 8451
TIME...MOT...LOC 1854Z 307DEG 35KT 3250 8443
$$
GAC053-197-263-269-111915-
/O.CON.KFFC.SV.W.0476.000000T0000Z-110811T1915Z/
TALBOT GA-MARION GA-TAYLOR GA-CHATTAHOOCHEE GA-
255 PM EDT THU AUG 11 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT
FOR EXTREME NORTHEASTERN CHATTAHOOCHEE...WEST CENTRAL TAYLOR...
NORTHERN MARION AND SOUTHERN TALBOT COUNTIES...
AT 250 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
MAUK...MOVING SOUTHEAST AT 40 MPH. THIS STORM HAS A HISTORY OF
PRODUCING DAMAGING WIND.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO FIVE
POINTS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
&&
LAT...LON 3252 8469 3255 8467 3257 8469 3271 8470
3273 8468 3274 8469 3277 8469 3260 8427
3236 8451
TIME...MOT...LOC 1854Z 307DEG 35KT 3250 8443
$$131
WWUS52 KFFC 111912
SVSFFC
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
312 PM EDT THU AUG 11 2011
GAC053-197-263-269-111922-
/O.EXP.KFFC.SV.W.0476.000000T0000Z-110811T1915Z/
TALBOT GA-MARION GA-TAYLOR GA-CHATTAHOOCHEE GA-
312 PM EDT THU AUG 11 2011
...THE SEVERE THUNDERSTORM WARNING FOR EXTREME NORTHEASTERN
CHATTAHOOCHEE...WEST CENTRAL TAYLOR...NORTHERN MARION AND SOUTHERN
TALBOT COUNTIES EXPIRES AT 315 PM EDT...
AT 308 PM EDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF
PRODUCING QUARTER SIZED HAIL...AND DAMAGING WINDS UP TO 60 MPH. THIS
STORM WAS LOCATED NEAR MAUK...MOVING SOUTHEAST AT 30 MPH.
ALTHOUGH THE STORM IS BEGINNING TO WEAKEN...STRONG WINDS AND
FREQUENT LIGHTNING WILL STILL BE POSSIBLE WITH THE STORM.
IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL AFTER THE STORM HAS PASSED...AND THEN CALL THE NATIONAL WEATHER
SERVICE TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.
LAT...LON 3252 8469 3255 8467 3257 8469 3271 8470
3273 8468 3274 8469 3277 8469 3260 8427
3236 8451
TIME...MOT...LOC 1912Z 309DEG 27KT 3246 8439
$$The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 1:25 PM EDT | Special Weather Statement | FFC | Harris | 50 min |
| Aug 11, 1:52 PM EDT | Severe Thunderstorm Warning | FFC | Harris, Meriwether, Troup | 38 min |
| Aug 11, 2:11 PM EDT | Special Weather Statement | FFC | Muscogee | 34 min |
| Aug 11, 2:33 PM EDT | Special Weather Statement | FFC | Heard | 42 min |
| Aug 11, 3:07 PM EDT | Special Weather Statement | FFC | Bleckley, Twiggs | 38 min |
| Aug 11, 3:16 PM EDT | Special Weather Statement | FFC | Marion, Schley, Webster | 44 min |
| Aug 11, 3:34 PM EDT | Special Weather Statement | FFC | Bleckley, Laurens | 41 min |
| Aug 11, 4:11 PM EDT | Special Weather Statement | FFC | Dodge | 34 min |
| Aug 11, 4:18 PM EDT | Special Weather Statement | FFC | Crisp | 27 min |
| Aug 11, 4:36 PM EDT | Special Weather Statement | FFC | Crisp, Wilcox | 39 min |
| Aug 11, 4:45 PM EDT | Special Weather Statement | FFC | Montgomery, Wheeler | 45 min |
| Aug 11, 5:20 PM EDT | Special Weather Statement | FFC | Telfair | 25 min |
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.