Alert archive / Mississippi / Mesoscale Discussions in 2003
Mesoscale Discussion 2085
The Storm Prediction Center issued this mesoscale discussion at Aug 4, 2003, 7:13 PM CDT for Choctaw County, Alabama; 37 counties in Mississippi. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 4, 2003, 7:13 PM CDT (00:13 UTC)
- Expired
- Aug 4, 2003, 9:15 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 38 counties
Choctaw County, AL, Attala County, MS, Calhoun County, MS, Carroll County, MS, Chickasaw County, MS, Choctaw County, MS, Clarke County, MS, Clay County, MS, Grenada County, MS, Holmes County, MS, Humphreys County, MS, Kemper County, MS, Lafayette County, MS, Lauderdale County, MS, Leake County, MS, Lee County, MS, Leflore County, MS, Lowndes County, MS, Madison County, MS, Marshall County, MS, Monroe County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Panola County, MS, Pontotoc County, MS, Quitman County, MS, Scott County, MS, Sunflower County, MS, Tallahatchie County, MS, Tate County, MS, Union County, MS, Webster County, MS, Winston County, MS, Yalobusha County, MS, Yazoo County, MS
The watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Jackson, MS (KJAN), launched 00:00Z, 0.2 hours before the alert went out and 139 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
- 2202 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 1342 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 85 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.9
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 |
|---|---|---|---|---|
| Aug 4, 11:02 PM CDT | Mesoscale Discussion | SPC | Colbert, Franklin, Jackson, Lauderdale, Lawrence, Limestone and 3 more | 88 min |
| Aug 5, 1:28 AM CDT | Mesoscale Discussion | SPC | Colbert, Fayette, Franklin, Lamar, Lauderdale, Lawrence and 3 more | 62 min |
| Aug 4, 8:10 PM CDT | Mesoscale Discussion | SPC | Benton, DeSoto, Lafayette, Marshall, Tate, Tunica | 95 min |
| Aug 4, 9:00 PM CDT | Severe Thunderstorm Watch | SPC | Alcorn, Benton, DeSoto, Itawamba, Lafayette, Lee and 8 more | 6 hr |
Nearby
Mesoscale Discussions in Mississippi, 2003Mesoscale Discussions in Alabama, 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.