Alert archive / Georgia / Mesoscale Discussions in 2004

Mesoscale Discussion 346

April 12, 20049 counties in Alabama; 51 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Apr 12, 2004, 9:48 PM CDT for 9 counties in Alabama; 51 counties in Georgia. It was in force for 57 min.

The area

The outline as issued.

The facts

Issued: Apr 12, 2004, 9:48 PM CDT (02:48 UTC)
Expired: Apr 12, 2004, 10:45 PM CDT
In force: 57 min
Issued by: the Storm Prediction Center

All 60 counties

Barbour County, AL, Bullock County, AL, Chambers County, AL, Dale County, AL, Henry County, AL, Houston County, AL, Lee County, AL, Macon County, AL, Russell County, AL, Baker County, GA, Baldwin County, GA, Bibb County, GA, Bleckley County, GA, Brooks County, GA, Calhoun County, GA, Chattahoochee County, GA, Clay County, GA, Colquitt County, GA, Cook County, GA, Crawford County, GA, Crisp County, GA, Decatur County, GA, Dooly County, GA, Dougherty County, GA, Early County, GA, Grady County, GA, Harris County, GA, Houston County, GA, Jones County, GA, Lamar County, GA, Lee County, GA, Macon County, GA, Marion County, GA, Meriwether County, GA, Miller County, GA, Mitchell County, GA, Monroe County, GA, Muscogee County, GA, Peach County, GA, Pike County, GA, Pulaski County, GA, Quitman County, GA, Randolph County, GA, Schley County, GA, Seminole County, GA, Stewart County, GA, Sumter County, GA, Talbot County, GA, Taylor County, GA, Terrell County, GA, Thomas County, GA, Tift County, GA, Troup County, GA, Turner County, GA, Twiggs County, GA, Upson County, GA, Webster County, GA, Wilcox County, GA, Wilkinson County, GA, Worth County, GA

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 2.8 hours before the alert went out and 163 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: 523 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 665 m above ground
0-6 km bulk shear: 71 kt
0-1 km storm-relative helicity: 99 m²/s²
0-3 km storm-relative helicity: 66 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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.