Alert archive / Georgia / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 475, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Aug 11, 2011, 1:52 PM EDT for Harris County, Meriwether County, Troup County, Georgia. It was in force for 38 min. 3 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, 1:52 PM EDT (17:52 UTC)
- Expired
- Aug 11, 2011, 2:30 PM EDT
- In force
- 38 min
- Issued by
- NWS Atlanta, GA
- Area
- Storm-based polygon
Counties Harris County, GA, Meriwether County, GA, Troup County, GA
The radar
The Atlanta radar (KFFC), 65 km from the middle of the area, began a volume at 17:54 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, 2:00 PM EDT | TSTM WND DMG | 5 Nw Hamilton, GA | HARRIS COUNTY 911 REPORTS SEVERAL DOWNED TREES IN THE NORTHWESTERN PORTION OF COUNTY. |
| 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. |
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, 5.9 hours before the alert went out and 68 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.
292
WUUS52 KFFC 111752
SVRFFC
GAC145-199-285-111830-
/O.NEW.KFFC.SV.W.0475.110811T1752Z-110811T1830Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
152 PM EDT THU AUG 11 2011
THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN HARRIS COUNTY IN WEST CENTRAL GEORGIA
SOUTHWESTERN MERIWETHER COUNTY IN WEST CENTRAL GEORGIA
SOUTHEASTERN TROUP COUNTY IN WEST CENTRAL GEORGIA
* UNTIL 230 PM EDT
* AT 150 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 8 MILES WEST
OF PINE MOUNTAIN-CALLAWAY GARDENS...MOVING SOUTHEAST AT 25 MPH.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
HAMILTON...SHILOH...WAVERLY HALL...WARM SPRINGS AND MANCHESTER.
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 3302 8502 3285 8458 3284 8470 3274 8469
3273 8468 3271 8470 3268 8469 3263 8470
3286 8512
TIME...MOT...LOC 1752Z 299DEG 20KT 3290 8497
$$1 follow-up statement
800
WWUS52 KFFC 111823
SVSFFC
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
223 PM EDT THU AUG 11 2011
GAC199-285-111832-
/O.CAN.KFFC.SV.W.0475.000000T0000Z-110811T1830Z/
TROUP GA-MERIWETHER GA-
223 PM EDT THU AUG 11 2011
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MERIWETHER AND
SOUTHEASTERN TROUP COUNTIES IS CANCELLED...
THE THUNDERSTORM THAT PROMPTED THE WARNING HAS MOVED OUT OF THE
COUNTY.
LAT...LON 3287 8511 3287 8475 3285 8471 3284 8470
3274 8469 3269 8470 3268 8469 3263 8470
3286 8512
TIME...MOT...LOC 1822Z 299DEG 20KT 3282 8480
$$
GAC145-111830-
/O.CON.KFFC.SV.W.0475.000000T0000Z-110811T1830Z/
HARRIS GA-
223 PM EDT THU AUG 11 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM EDT
FOR NORTHEASTERN HARRIS COUNTY...
AT 217 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
F.D. ROOSEVELT STATE PARK...MOVING SOUTHEAST AT 25 MPH. THIS STORM
HAS A HISTORY OF PRODUCING DAMAGING WIND AS IT MOVED THROUGH
NORTHERN HARRIS COUNTY.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SHILOH
AND WAVERLY HALL.
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 3287 8511 3287 8475 3285 8471 3284 8470
3274 8469 3269 8470 3268 8469 3263 8470
3286 8512
TIME...MOT...LOC 1822Z 299DEG 20KT 3282 8480
$$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, 2:11 PM EDT | Special Weather Statement | FFC | Muscogee | 34 min |
| Aug 11, 2:30 PM EDT | Severe Thunderstorm Warning | FFC | Chattahoochee, Harris, Marion, Muscogee, Talbot, Taylor | 45 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.