Alert archive / Mississippi / Mesoscale Discussions in 2003
Mesoscale Discussion 728
The Storm Prediction Center issued this mesoscale discussion at May 4, 2003, 12:02 PM CDT for 9 counties in Alabama; 32 counties in Mississippi; Fayette County, Hardeman County, Tennessee. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- May 4, 2003, 12:02 PM CDT (17:02 UTC)
- Expired
- May 4, 2003, 2:30 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 43 counties
Fayette County, AL, Franklin County, AL, Greene County, AL, Hale County, AL, Lamar County, AL, Marion County, AL, Pickens County, AL, Sumter County, AL, Tuscaloosa County, AL, Alcorn County, MS, Benton County, MS, Calhoun County, MS, Chickasaw County, MS, Choctaw County, MS, Clay County, MS, DeSoto County, MS, Grenada County, MS, Itawamba County, MS, Kemper County, MS, Lafayette County, MS, Lee County, MS, Lowndes County, MS, Marshall County, MS, Monroe County, MS, Montgomery County, MS, Neshoba County, MS, Noxubee County, MS, Oktibbeha County, MS, Panola County, MS, Pontotoc County, MS, Prentiss County, MS, Quitman County, MS, Tallahatchie County, MS, Tate County, MS, Tippah County, MS, Tishomingo County, MS, Tunica County, MS, Union County, MS, Webster County, MS, Winston County, MS, Yalobusha County, MS, Fayette County, TN, Hardeman County, TN
The nearest sounding before it
Little Rock, AR (KLZK), launched 12:00Z, 5.0 hours before the alert went out and 152 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.
- Mixed-layer CAPE
- 286 J/kg
- Mixed-layer CIN
- -267 J/kg
- Mixed-layer LCL
- 858 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 319 m²/s²
- 0-3 km storm-relative helicity
- 474 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.4
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 3, 7:19 PM CDT | Mesoscale Discussion | SPC | Baldwin, Mobile | 116 min |
| May 4, 5:01 PM CDT | Mesoscale Discussion | SPC | Alcorn, Benton, DeSoto, Itawamba, Lafayette, Lee and 9 more | 3 hr |
| May 4, 6:55 PM CDT | Tornado Watch | SPC | Alcorn, Benton, DeSoto, Marshall, Prentiss, Tate and 4 more | 6 hr |
Nearby
Mesoscale Discussions in Mississippi, 2003Mesoscale Discussions in Alabama, 2003Mesoscale Discussions in Tennessee, 2003Every 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.