Alert archive / Georgia / Special Weather Statements in 2011

Special Weather Statement, NWS Atlanta, GA

August 8, 2011Henry County, Rockdale County, Georgia

NWS Atlanta, GA issued this special weather statement at Aug 8, 2011, 8:17 PM EDT for Henry County, Rockdale County, Georgia. It was in force for 28 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 8, 2011, 8:17 PM EDT (00:17 UTC)
Expired: Aug 8, 2011, 8:45 PM EDT
In force: 28 min
Issued by: NWS Atlanta, GA

Counties Henry County, GA, Rockdale County, GA

The radar

The Atlanta radar (KFFC), 49 km from the middle of the area, began a volume at 00:18 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 00:00Z, 0.3 hours before the alert went out and 44 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1682 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 1249 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 73 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

457 
WWUS82 KFFC 090017
SPSFFC

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
817 PM EDT MON AUG 8 2011

GAZ033-044>046-055-057-090045-
817 PM EDT MON AUG 8 2011

...SIGNIFICANT WEATHER ADVISORY FOR PEA SIZED HAIL...40 MPH WINDS 
AND FREQUENT LIGHTNING IN ROCKDALE...DEKALB...HENRY...CLAYTON AND 
FULTON COUNTIES UNTIL 845 PM EDT...

AT 813 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
STRONG THUNDERSTORM OVER GRESHAM PARK...MOVING SOUTHEAST AT 30 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...DEKALB...HENRY...CLAYTON AND FULTON COUNTIES THROUGH 845
PM EDT. SOME LOCATIONS IN THE PATH OF THIS STORM INCLUDE EDGEWOOD...
CEDAR GROVE...KIRKWOOD...EAST LAKE...PANTHERSVILLE...GRESHAM PARK...
AVONDALE ESTATES...DECATUR...LAKEWOOD PARK...GRANT PARK-ZOO
ATLANTA...LITTLE FIVE POINTS...HAPEVILLE...FOREST PARK...CONLEY AND
FORT GILLEM. BRIEF HEAVY DOWNPOURS WILL CAUSE PONDING OF WATER ON
ROADWAYS.

&&

LAT...LON 3371 8396 3343 8414 3365 8444 3379 8434
TIME...MOT...LOC 0017Z 303DEG 25KT 3369 8428

$$

The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 8, 8:03 PM EDT	Special Weather Statement	FFC	Heard, Troup	42 min
Aug 8, 8:25 PM EDT	Special Weather Statement	FFC	Toombs	35 min
Aug 8, 8:27 PM EDT	Special Weather Statement	FFC	Oconee, Walton	48 min
Aug 8, 8:30 PM EDT	Special Weather Statement	FFC	Fannin	45 min
Aug 8, 8:32 PM EDT	Special Weather Statement	FFC	Jefferson	28 min
Aug 8, 8:56 PM EDT	Special Weather Statement	FFC	Glascock, Jefferson	34 min
Aug 8, 9:05 PM EDT	Special Weather Statement	FFC	Crisp	25 min
Aug 8, 9:06 PM EDT	Special Weather Statement	FFC	Fayette, Spalding	39 min
Aug 8, 9:38 PM EDT	Special Weather Statement	FFC	Harris	37 min
Aug 8, 9:39 PM EDT	Special Weather Statement	FFC	Jefferson	36 min
Aug 8, 10:01 PM EDT	Special Weather Statement	FFC	Lamar, Monroe	44 min
Aug 8, 10:42 PM EDT	Special Weather Statement	FFC	Bibb	33 min
Aug 9, 2:40 PM EDT	Special Weather Statement	FFC	Bibb, Twiggs	50 min
Aug 9, 2:45 PM EDT	Special Weather Statement	FFC	Harris, Meriwether, Muscogee, Pike, Talbot, Upson	45 min
Aug 9, 3:33 PM EDT	Special Weather Statement	FFC	Pike	27 min
Aug 9, 3:41 PM EDT	Special Weather Statement	FFC	Crawford, Taylor, Upson	49 min
Aug 9, 3:53 PM EDT	Severe Thunderstorm Warning	FFC	Lamar, Monroe, Pike, Upson	52 min
Aug 9, 4:08 PM EDT	Special Weather Statement	FFC	Banks	52 min
Aug 9, 4:13 PM EDT	Special Weather Statement	FFC	Glascock, Jefferson	32 min
Aug 9, 4:16 PM EDT	Severe Thunderstorm Warning	FFC	Monroe	44 min
Aug 9, 4:39 PM EDT	Special Weather Statement	FFC	Houston, Peach, Twiggs	36 min
Aug 9, 4:43 PM EDT	Severe Thunderstorm Warning	FFC	Bleckley, Dodge, Pulaski	47 min
Aug 9, 4:43 PM EDT	Severe Thunderstorm Warning	FFC	Bibb, Jones	47 min
Aug 9, 4:54 PM EDT	Severe Thunderstorm Warning	FFC	Chattahoochee, Stewart	36 min
Aug 9, 4:55 PM EDT	Special Weather Statement	FFC	Emanuel	50 min
Aug 9, 5:00 PM EDT	Severe Thunderstorm Warning	FFC	Emanuel, Jefferson	45 min
Aug 9, 5:03 PM EDT	Severe Thunderstorm Warning	FFC	Twiggs	42 min
Aug 9, 5:13 PM EDT	Special Weather Statement	FFC	Treutlen	32 min
Aug 9, 5:13 PM EDT	Severe Thunderstorm Warning	FFC	Baldwin, Wilkinson	35 min
Aug 9, 5:19 PM EDT	Special Weather Statement	FFC	Schley, Stewart, Webster	26 min
Aug 9, 5:21 PM EDT	Special Weather Statement	FFC	Telfair	24 min
Aug 9, 5:39 PM EDT	Severe Thunderstorm Warning	FFC	Emanuel	36 min
Aug 9, 5:43 PM EDT	Severe Thunderstorm Warning	FFC	Crisp	30 min
Aug 9, 5:54 PM EDT	Special Weather Statement	FFC	Toombs	36 min
Aug 9, 6:08 PM EDT	Severe Thunderstorm Warning	FFC	Telfair	26 min
Aug 9, 6:20 PM EDT	Severe Thunderstorm Warning	FFC	Toombs	25 min
Aug 9, 7:29 PM EDT	Special Weather Statement	FFC	Morgan	31 min

Nearby

Special Weather Statements in Georgia, 2011 Every 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.