Alert archive / Georgia / Special Weather Statements in 2011

Special Weather Statement, NWS Atlanta, GA

August 4, 2011Fayette County, Georgia

NWS Atlanta, GA issued this special weather statement at Aug 4, 2011, 4:32 AM EDT for Fayette County, Georgia. It was in force for 43 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 4, 2011, 4:32 AM EDT (08:32 UTC)
Expired: Aug 4, 2011, 5:15 AM EDT
In force: 43 min
Issued by: NWS Atlanta, GA

County Fayette County, GA

The radar

The Atlanta radar (KFFC), 18 km from the middle of the area, began a volume at 08:33 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, 8.5 hours before the alert went out and 17 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: 653 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 2115 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 28 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.

877 
WWUS82 KFFC 040832
SPSFFC

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
432 AM EDT THU AUG 4 2011

GAZ044-053-054-040915-
432 AM EDT THU AUG 4 2011

...SIGNIFICANT WEATHER ADVISORY FOR 40 TO 45 MPH WINDS IN NORTHEAST 
COWETA...NORTHERN FAYETTE...AND SOUTHERN FULTON COUNTIES UNTIL 515 
AM EDT...

AT 429 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
CLUSTER OF STRONG THUNDERSTORMS BETWEEN PALMETTO...FAIRBURN...AND 
TYRONE...MOVING SOUTH AT 30 MPH.

ALTHOUGH THESE THUNDERSTORMS ARE DIMINISHING IN INTENSITY...THEY ARE 
EXHIBITING STRONG OUTFLOW WINDS OF 40 TO 45 MPH AS THEY MOVE 
SOUTHWARD ACROSS THE AREA.

FREQUENT CLOUD-TO-GROUND LIGHTNING IS OCCURRING WITH THESE 
THUNDERSTORMS. MOVE INDOORS IMMEDIATELY! LIGHTNING IS ONE OF NATURES 
NUMBER ONE KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE 
CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. RESIDENTS IN THE AREA SHOULD 
REMAIN INDOORS AND AWAY FROM ELECTRICAL APPLIANCES...DOORS...AND 
WINDOWS UNTIL THE STORMS HAVE PASSED. LAND-LINE TELEPHONES SHOULD 
ONLY BE USED IN AN EMERGENCY.

WIND GUSTS OF 40 TO 45 MAY BLOW DOWN SMALL OR WEAK TREES AND IMPACT 
A FEW POWER LINES. LOOSE AND LIGHT WEIGHT OBJECTS MAY BE BLOWN ABOUT.

&&

LAT...LON 3365 8456 3355 8445 3350 8442 3349 8441
      3346 8438 3330 8474 3358 8476
TIME...MOT...LOC 0830Z 339DEG 27KT 3352 8462

$$



19

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 4, 12:50 AM EDT	Special Weather Statement	FFC	Gordon	40 min
Aug 4, 1:12 AM EDT	Special Weather Statement	FFC	Union, White	48 min
Aug 4, 1:37 AM EDT	Special Weather Statement	FFC	Gordon	38 min
Aug 4, 2:07 AM EDT	Severe Thunderstorm Warning	FFC	Bartow	38 min
Aug 4, 2:53 AM EDT	Special Weather Statement	FFC	Paulding	22 min
Aug 4, 3:30 AM EDT	Special Weather Statement	FFC	Cobb, DeKalb, Douglas, Fulton, Paulding	45 min
Aug 4, 4:02 AM EDT	Special Weather Statement	FFC	Fulton	28 min
Aug 4, 1:22 PM EDT	Special Weather Statement	FFC	Floyd	23 min
Aug 4, 1:42 PM EDT	Special Weather Statement	FFC	Chattooga, Floyd	33 min
Aug 4, 3:15 PM EDT	Special Weather Statement	FFC	Laurens	30 min
Aug 4, 3:17 PM EDT	Special Weather Statement	FFC	Wilkes	28 min
Aug 4, 4:16 PM EDT	Heat Advisory	FFC	Baldwin, Bibb, Bleckley, Chattahoochee, Clarke, Crawford and 40 more	5 days

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.