Alert archive / Georgia / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 458, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Aug 7, 2011, 6:00 PM EDT for Dawson County, Gilmer County, Pickens County, Georgia. It was in force for 30 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
- Aug 7, 2011, 6:00 PM EDT (22:00 UTC)
- Expired
- Aug 7, 2011, 6:30 PM EDT
- In force
- 30 min
- Issued by
- NWS Atlanta, GA
- Area
- Storm-based polygon
Counties Dawson County, GA, Gilmer County, GA, Pickens County, GA
The radar
The Atlanta radar (KFFC), 129 km from the middle of the area, began a volume at 22:01 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 7, 6:13 PM EDT | TSTM WND DMG | 7 Wnw Dawsonville, GA | TREE DOWN ON POWER LINE ON AMICALOLA CHURCH 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, 10.0 hours before the alert went out and 127 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
- 1453 J/kg
- Mixed-layer CIN
- -76 J/kg
- Mixed-layer LCL
- 854 m above ground
- 0-6 km bulk shear
- 2 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
787 WUUS52 KFFC 072200 SVRFFC GAC085-123-227-072230- /O.NEW.KFFC.SV.W.0458.110807T2200Z-110807T2230Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PEACHTREE CITY GA 600 PM EDT SUN AUG 7 2011 THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN DAWSON COUNTY IN NORTH CENTRAL GEORGIA SOUTHEASTERN GILMER COUNTY IN NORTH CENTRAL GEORGIA EASTERN PICKENS COUNTY IN NORTH CENTRAL GEORGIA * UNTIL 630 PM EDT * AT 557 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS UP TO 60 MPH. THIS STORM WAS LOCATED 7 MILES NORTH OF JASPER...MOVING SOUTHEAST AT 15 MPH. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SEQUOYAH LAKE...LAKE TAMARACK...AMICALOLA FALLS STATE PARK... FAUSETT LAKE...MCKEE...JUNO...MARBLEHILL AND TATE. 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. && LAT...LON 3443 8408 3438 8437 3461 8457 3466 8431 TIME...MOT...LOC 2201Z 322DEG 12KT 3455 8438 $$
The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 5:43 PM EDT | Special Weather Statement | FFC | Dawson, Gilmer, Pickens | 32 min |
| Aug 7, 6:28 PM EDT | Special Weather Statement | FFC | Dawson, Pickens | 32 min |
| Aug 7, 6:39 PM EDT | Severe Thunderstorm Warning | FFC | Cherokee, Dawson, Forsyth, Pickens | 36 min |
| Aug 7, 7:08 PM EDT | Special Weather Statement | FFC | Hall | 37 min |
| Aug 7, 7:12 PM EDT | Special Weather Statement | FFC | Gilmer | 33 min |
| Aug 7, 7:19 PM EDT | Special Weather Statement | FFC | Forsyth | 26 min |
| Aug 7, 7:39 PM EDT | Special Weather Statement | FFC | Barrow, Jackson, Walton | 36 min |
| Aug 7, 7:54 PM EDT | Special Weather Statement | FFC | Dawson, Forsyth | 36 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.