Alert archive / Georgia / Mesoscale Discussions in 2003

Mesoscale Discussion 1957

July 22, 200324 counties in Alabama; 60 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Jul 22, 2003, 1:15 PM CDT for 24 counties in Alabama; 60 counties in Georgia. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jul 22, 2003, 1:15 PM CDT (18:15 UTC)
Expired: Jul 22, 2003, 3:15 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center

All 84 counties

Autauga County, AL, Barbour County, AL, Bullock County, AL, Butler County, AL, Chambers County, AL, Coffee County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Dale County, AL, Dallas County, AL, Elmore County, AL, Escambia County, AL, Henry County, AL, Lee County, AL, Lowndes County, AL, Macon County, AL, Marengo County, AL, Monroe County, AL, Montgomery County, AL, Pike County, AL, Russell County, AL, Tallapoosa County, AL, Wilcox County, AL, Baldwin County, GA, Banks County, GA, Barrow County, GA, Bibb County, GA, Bleckley County, GA, Butts County, GA, Chattahoochee County, GA, Clarke County, GA, Clay County, GA, Clayton County, GA, Coweta County, GA, Crawford County, GA, DeKalb County, GA, Dooly County, GA, Fayette County, GA, Fulton County, GA, Glascock County, GA, Greene County, GA, Gwinnett County, GA, Hancock County, GA, Harris County, GA, Heard County, GA, Henry County, GA, Houston County, GA, Jackson County, GA, Jasper County, GA, Jones County, GA, Lamar County, GA, Macon County, GA, Madison County, GA, Marion County, GA, Meriwether County, GA, Monroe County, GA, Morgan County, GA, Muscogee County, GA, Newton County, GA, Oconee County, GA, Oglethorpe County, GA, Peach County, GA, Pike County, GA, Putnam County, GA, Quitman County, GA, Randolph County, GA, Rockdale County, GA, Schley County, GA, Spalding County, GA, Stewart County, GA, Sumter County, GA, Talbot County, GA, Taliaferro County, GA, Taylor County, GA, Troup County, GA, Twiggs County, GA, Upson County, GA, Walton County, GA, Warren County, GA, Washington County, GA, Webster County, GA, Wilkes County, GA, Wilkinson County, GA

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 6.3 hours before the alert went out and 95 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: 491 J/kg
Mixed-layer CIN: -108 J/kg
Mixed-layer LCL: 876 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: -31 m²/s²
0-3 km storm-relative helicity: -17 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
Jul 22, 6:40 AM CDT	Severe Thunderstorm Watch	SPC	Colbert, Franklin, Lauderdale, Lawrence, Marion, Winston	3 hr
Jul 22, 11:31 AM CDT	Mesoscale Discussion	SPC	Bullock, Calhoun, Chambers, Chilton, Clay, Cleburne and 8 more	119 min
Jul 22, 11:55 AM CDT	Severe Thunderstorm Watch	SPC	Autauga, Bibb, Calhoun, Chambers, Cherokee, Chilton and 19 more	5 hr
Jul 22, 2:30 PM CDT	Severe Thunderstorm Watch	SPC	Choctaw	6 hr
Jul 22, 2:40 PM CDT	Severe Thunderstorm Watch	SPC	Baldwin, Barbour, Bullock, Butler, Clarke, Coffee and 16 more	5 hr
Jul 22, 6:21 PM CDT	Mesoscale Discussion	SPC	Washington	54 min
Jul 22, 2:10 PM CDT	Severe Thunderstorm Watch	SPC	Baldwin, Bibb, Bleckley, Butts, Chattahoochee, Clarke and 37 more	3 hr
Jul 22, 2:59 PM CDT	Mesoscale Discussion	SPC	Appling, Bacon, Ben Hill, Bleckley, Bulloch, Burke and 31 more	2 hr

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.