Alert archive / Georgia / Special Weather Statements in 2011
Special Weather Statement, NWS Atlanta, GA
NWS Atlanta, GA issued this special weather statement at Aug 20, 2011, 2:39 PM EDT for Butts County, Henry County, Georgia. It was in force for 36 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 20, 2011, 2:39 PM EDT (18:39 UTC)
- Expired
- Aug 20, 2011, 3:15 PM EDT
- In force
- 36 min
- Issued by
- NWS Atlanta, GA
Counties Butts County, GA, Henry County, GA
The radar
The Atlanta radar (KFFC), 51 km from the middle of the area, began a volume at 18:41 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.
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 6.7 hours before the alert went out and 45 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
- 1091 J/kg
- Mixed-layer CIN
- -68 J/kg
- Mixed-layer LCL
- 1222 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 51 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted, in the capitals the NWS used until 2016.
827
WWUS82 KFFC 201839
SPSFFC
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
239 PM EDT SAT AUG 20 2011
GAZ046-048-057-058-201915-
239 PM EDT SAT AUG 20 2011
...SIGNIFICANT WEATHER ADVISORY FOR 40 MPH WINDS IN ROCKDALE...
NEWTON...BUTTS AND HENRY COUNTIES UNTIL 315 PM EDT...
AT 237 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM OVER OLA...MOVING SOUTH AT 10 MPH.
THIS STORM HAS THE POTENTIAL TO PRODUCE PEA SIZED HAIL...FREQUENT
CLOUD TO GROUND LIGHTNING AND WIND GUSTS TO 40 MPH AS IT MOVES ACROSS
ROCKDALE...NEWTON...BUTTS AND HENRY COUNTIES THROUGH 315 PM EDT. SOME
LOCATIONS IN THE PATH OF THIS STORM INCLUDE OAK HILL...ROCKY
PLAINS...PORTERDALE...MAGNET...KELLEYTOWN...OLA...FINCHERVILLE...
MCDONOUGH...BLACKSVILLE...WORTHVILLE...STARK...JENKINSBURG...
JACKSON...LUELLA AND LOCUST GROVE. BRIEF HEAVY DOWNPOURS WILL CAUSE
PONDING OF WATER ON ROADWAYS.
SIGNIFICANT WEATHER ADVISORIES ARE ISSUED FOR WINDS UP TO 50 MPH...
HAIL LESS THAN THE SIZE OF QUARTERS...OR SIGNIFICANT CLOUD-TO-GROUND
LIGHTNING.
&&
LAT...LON 3362 8412 3365 8409 3358 8385 3326 8393
3335 8420
TIME...MOT...LOC 1839Z 012DEG 7KT 3344 8405
$$The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 8:55 PM EDT | Special Weather Statement | FFC | Cobb | 35 min |
| Aug 19, 10:44 PM EDT | Special Weather Statement | FFC | White | 31 min |
| Aug 20, 1:38 PM EDT | Special Weather Statement | FFC | Clayton, Fayette | 37 min |
| Aug 20, 1:51 PM EDT | Special Weather Statement | FFC | Candler | 24 min |
| Aug 20, 3:04 PM EDT | Special Weather Statement | FFC | Wilkes | 26 min |
| Aug 20, 3:14 PM EDT | Special Weather Statement | FFC | Gwinnett | 31 min |
| Aug 20, 3:40 PM EDT | Special Weather Statement | FFC | Coweta | 35 min |
| Aug 20, 3:46 PM EDT | Special Weather Statement | FFC | Chattahoochee | 29 min |
| Aug 20, 4:02 PM EDT | Special Weather Statement | FFC | Monroe | 43 min |
| Aug 20, 4:09 PM EDT | Special Weather Statement | FFC | Baldwin | 51 min |
| Aug 20, 4:56 PM EDT | Special Weather Statement | FFC | Upson | 49 min |
| Aug 20, 6:35 PM EDT | Special Weather Statement | FFC | Houston, Pulaski | 25 min |
| Aug 20, 7:46 PM EDT | Special Weather Statement | FFC | Cobb | 29 min |
Nearby
Special Weather Statements in Georgia, 2011Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.