Alert archive / Georgia / Mesoscale Discussions in 2004

Mesoscale Discussion 966

May 28, 20046 counties in Alabama; 42 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at May 28, 2004, 2:07 PM CDT for 6 counties in Alabama; 42 counties in Georgia. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: May 28, 2004, 2:07 PM CDT (19:07 UTC)
Expired: May 28, 2004, 4:30 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center

All 48 counties

Calhoun County, AL, Cherokee County, AL, Clay County, AL, Cleburne County, AL, Randolph County, AL, Talladega County, AL, Barrow County, GA, Bartow County, GA, Butts County, GA, Carroll County, GA, Cherokee County, GA, Clarke County, GA, Clayton County, GA, Cobb County, GA, Coweta County, GA, DeKalb County, GA, Douglas County, GA, Elbert County, GA, Fayette County, GA, Floyd County, GA, Forsyth County, GA, Fulton County, GA, Glascock County, GA, Greene County, GA, Gwinnett County, GA, Hall County, GA, Hancock County, GA, Haralson County, GA, Heard County, GA, Henry County, GA, Jackson County, GA, Jasper County, GA, Lincoln County, GA, Madison County, GA, McDuffie County, GA, Morgan County, GA, Newton County, GA, Oconee County, GA, Oglethorpe County, GA, Paulding County, GA, Polk County, GA, Putnam County, GA, Rockdale County, GA, Spalding County, GA, Taliaferro County, GA, Walton County, GA, Warren County, GA, Wilkes County, GA

The radar

The Atlanta radar (KFFC), 49 km from the middle of the area, began a volume at 19:11 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

Nashville Metro, TN (KBNA), launched 12:00Z, 7.1 hours before the alert went out and 310 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: 138 J/kg
Mixed-layer CIN: -137 J/kg
Mixed-layer LCL: 1121 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: -104 m²/s²
0-3 km storm-relative helicity: -75 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.4

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
May 28, 1:36 PM CDT	Mesoscale Discussion	SPC	Pickens	2 hr

Nearby

Mesoscale Discussions in Georgia, 2004 Mesoscale Discussions in Alabama, 2004 Every mesoscale discussion in 2004

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.