Alert archive / Georgia / Special Weather Statements in 2013

Special Weather Statement, NWS Atlanta, GA

July 31, 20134 counties in Georgia

NWS Atlanta, GA issued this special weather statement at Jul 31, 2013, 12:21 PM EDT for 4 counties in Georgia. It was in force for 24 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
Jul 31, 2013, 12:21 PM EDT (16:21 UTC)
Expired
Jul 31, 2013, 12:45 PM EDT
In force
24 min
Issued by
NWS Atlanta, GA

Counties Dooly County, GA, Macon County, GA, Schley County, GA, Sumter County, GA

The radar

The Robins AFB radar (KJGX), 92 km from the middle of the area, began a volume at 16:21 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, 4.4 hours before the alert went out and 148 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-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 12:00Z on 2013-07-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 516 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 12:00Z on 2013-07-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -37 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
516 J/kg
Mixed-layer CIN
-44 J/kg
Mixed-layer LCL
734 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
-37 m²/s²
0-3 km storm-relative helicity
-86 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.

463 
WWUS82 KFFC 311621
SPSFFC

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1221 PM EDT WED JUL 31 2013

GAZ092-093-104-105-311645-
1221 PM EDT WED JUL 31 2013

...SIGNIFICANT WEATHER ADVISORY FOR HEAVY RAIN IN SUMTER...SCHLEY...
MACON AND DOOLY COUNTIES UNTIL 1245 PM EDT...

AT 1216 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
STRONG THUNDERSTORMS OVER BARTLETT...MOVING SOUTHEAST AT 20 MPH.

RUNOFF FROM THESE STORMS WILL CAUSE MINOR FLOODING OF SMALL CREEKS
AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES ACROSS
SUMTER...SCHLEY...MACON AND DOOLY COUNTIES...INCLUDING AREAS AROUND
WHITEWATER STATE PARK...FOUNTAINVILLE...BARTLETT...GARDEN VALLEY...
IDEAL...WALLS CROSSING...MURRAYS CROSSROADS...ELLAVILLE...LA
CROSSE...SHILOH...MONTEZUMA...OGLETHORPE...BUMPHEAD...CLEARVIEW AND
ANDERSONVILLE. ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE
BANKS OF CREEKS AND STREAMS ARE SUBJECT TO MINOR FLOODING.

&&

LAT...LON 3223 8441 3247 8411 3215 8368 3203 8387
      3203 8392 3203 8396 3198 8394 3191 8407
      3191 8416
TIME...MOT...LOC 1621Z 320DEG 23KT 3230 8413

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 31, 6:20 AM EDTSpecial Weather StatementFFCCarroll55 min
Jul 31, 7:38 AM EDTSpecial Weather StatementFFCLamar, Pike, Upson37 min
Jul 31, 8:13 AM EDTSpecial Weather StatementFFCLamar, Monroe, Pike, Upson62 min
Jul 31, 9:12 AM EDTSpecial Weather StatementFFCCrawford, Monroe, Upson63 min
Jul 31, 9:56 AM EDTSpecial Weather StatementFFCCarroll49 min
Jul 31, 10:25 AM EDTSpecial Weather StatementFFCPaulding35 min
Jul 31, 11:09 AM EDTSpecial Weather StatementFFCMarion, Muscogee, Taylor21 min
Jul 31, 11:17 AM EDTSpecial Weather StatementFFCClayton, Cobb, Coweta, Douglas, Fayette, Fulton and 2 more43 min
Jul 31, 11:36 AM EDTSpecial Weather StatementFFCMacon, Marion, Schley39 min
Jul 31, 12:41 PM EDTSpecial Weather StatementFFCMacon, Sumter34 min
Jul 31, 12:51 PM EDTSpecial Weather StatementFFCHarris, Talbot24 min
Jul 31, 1:25 PM EDTSpecial Weather StatementFFCDodge35 min
Jul 31, 1:53 PM EDTSpecial Weather StatementFFCCrisp, Pulaski, Wilcox37 min
Jul 31, 3:04 PM EDTSpecial Weather StatementFFCStewart56 min

Nearby

Special Weather Statements in Georgia, 2013Every special weather statement in 2013

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.