Alert archive / Georgia / Mesoscale Discussions in 2003

Mesoscale Discussion 2074

August 3, 200318 counties in Alabama; 27 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Aug 3, 2003, 5:52 PM CDT for 18 counties in Alabama; 27 counties in Georgia. It was in force for 113 min.

The area

The outline as issued.

The facts

Issued: Aug 3, 2003, 5:52 PM CDT (22:52 UTC)
Expired: Aug 3, 2003, 7:45 PM CDT
In force: 113 min
Issued by: the Storm Prediction Center

All 45 counties

Autauga County, AL, Bibb County, AL, Chambers County, AL, Chilton County, AL, Clay County, AL, Cleburne County, AL, Coosa County, AL, Dallas County, AL, Elmore County, AL, Greene County, AL, Hale County, AL, Lee County, AL, Macon County, AL, Perry County, AL, Randolph County, AL, Shelby County, AL, Talladega County, AL, Tallapoosa County, AL, Butts County, GA, Carroll County, GA, Clayton County, GA, Cobb County, GA, Coweta County, GA, DeKalb County, GA, Douglas County, GA, Fayette County, GA, Fulton County, GA, Gwinnett County, GA, Haralson County, GA, Harris County, GA, Heard County, GA, Henry County, GA, Jasper County, GA, Jones County, GA, Lamar County, GA, Meriwether County, GA, Monroe County, GA, Newton County, GA, Paulding County, GA, Pike County, GA, Rockdale County, GA, Spalding County, GA, Talbot County, GA, Troup County, GA, Upson County, GA

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 10.9 hours before the alert went out and 63 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: 1515 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 846 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 47 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.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 3, 1:07 PM CDT	Mesoscale Discussion	SPC	Fayette, Franklin, Lamar, Marion, Pickens, Winston	113 min

Nearby

Mesoscale Discussions in Georgia, 2003 Mesoscale Discussions in Alabama, 2003 Every mesoscale discussion in 2003

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.