Alert archive / Georgia / Special Weather Statements in 2012
Special Weather Statement, NWS Atlanta, GA
NWS Atlanta, GA issued this special weather statement at Aug 3, 2012, 5:35 PM EDT for Cobb County, Georgia. It was in force for 40 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 3, 2012, 5:35 PM EDT (21:35 UTC)
- Expired
- Aug 3, 2012, 6:15 PM EDT
- In force
- 40 min
- Issued by
- NWS Atlanta, GA
County Cobb County, GA
The radar
The Atlanta radar (KFFC), 75 km from the middle of the area, began a volume at 21:34 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, 9.6 hours before the alert went out and 73 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
- 115 J/kg
- Mixed-layer CIN
- -110 J/kg
- Mixed-layer LCL
- 833 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- 45 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
846 WWUS82 KFFC 032135 SPSFFC SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PEACHTREE CITY GA 535 PM EDT FRI AUG 3 2012 GAZ021-032>034-045-032215- 535 PM EDT FRI AUG 3 2012 ...SIGNIFICANT WEATHER ADVISORY FOR PEA SIZED HAIL AND 40 MPH WINDS IN CHEROKEE...COBB...DEKALB...GWINNETT AND FULTON COUNTIES UNTIL 615 PM EDT... AT 534 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM OVER SANDY PLAINS...MOVING EAST 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 CHEROKEE...COBB...DEKALB...GWINNETT AND FULTON COUNTIES THROUGH 615 PM EDT. SOME LOCATIONS IN THE PATH OF THIS STORM INCLUDE KENNESAW STATE UNIVERSITY...WHITE WATER PARK...DOBBINS AIR RESERVE BASE... MARIETTA...KENNESAW...SANDY PLAINS...SWEAT MOUNTAIN...MOUNTAIN PARK...DORAVILLE...CHAMBLEE...DUNWOODY...SANDY SPRINGS...ROSWELL... ALPHARETTA AND MOUNT BETHEL. HEAVY DOWNPOURS WILL CAUSE PONDING OF WATER ON ROADWAYS. && LAT...LON 3412 8426 3387 8426 3391 8463 3409 8463 TIME...MOT...LOC 2135Z 271DEG 7KT 3400 8452 $$
The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 8:05 PM EDT | Flash Flood Warning | FFC | DeKalb, Fulton | 4 hr |
| Aug 2, 8:53 PM EDT | Special Weather Statement | FFC | Spalding | 52 min |
| Aug 3, 6:11 PM EDT | Special Weather Statement | FFC | Union | 34 min |
| Aug 3, 6:42 PM EDT | Special Weather Statement | FFC | DeKalb, Gwinnett | 33 min |
| Aug 3, 6:51 PM EDT | Severe Thunderstorm Warning | FFC | DeKalb, Gwinnett, Rockdale, Walton | 39 min |
| Aug 3, 7:36 PM EDT | Special Weather Statement | FFC | Fayette | 39 min |
| Aug 3, 7:44 PM EDT | Severe Thunderstorm Warning | FFC | Clayton, DeKalb, Fayette, Fulton, Henry | 46 min |
| Aug 3, 7:59 PM EDT | Special Weather Statement | FFC | Gwinnett | 46 min |
Nearby
Special Weather Statements in Georgia, 2012Every special weather statement in 2012
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.