Alert archive / Louisiana / Mesoscale Discussions in 2005
Mesoscale Discussion 402
The Storm Prediction Center issued this mesoscale discussion at Mar 26, 2005, 3:14 PM CST for 20 parishes in Louisiana; 17 counties in Mississippi. It was in force for 31 min.
The area
The outline as issued.
The facts
- Issued
- Mar 26, 2005, 3:14 PM CST (21:14 UTC)
- Expired
- Mar 26, 2005, 3:45 PM CST
- In force
- 31 min
- Issued by
- the Storm Prediction Center
All 37 counties
Acadia Parish, LA, Allen Parish, LA, Avoyelles Parish, LA, Caldwell Parish, LA, Catahoula Parish, LA, Concordia Parish, LA, East Carroll Parish, LA, East Feliciana Parish, LA, Evangeline Parish, LA, Franklin Parish, LA, Jefferson Davis Parish, LA, Lafayette Parish, LA, LaSalle Parish, LA, Madison Parish, LA, Pointe Coupee Parish, LA, Rapides Parish, LA, Richland Parish, LA, Saint Landry Parish, LA, Tensas Parish, LA, West Feliciana Parish, LA, Adams County, MS, Amite County, MS, Claiborne County, MS, Copiah County, MS, Franklin County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Jefferson County, MS, Lincoln County, MS, Madison County, MS, Rankin County, MS, Sharkey County, MS, Warren County, MS, Wilkinson 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 12:00Z, 9.2 hours before the alert went out and 178 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
- 151 J/kg
- Mixed-layer CIN
- -83 J/kg
- Mixed-layer LCL
- 801 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 54 m²/s²
- 0-3 km storm-relative helicity
- 133 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
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 |
|---|---|---|---|---|
| Mar 26, 1:14 PM CST | Mesoscale Discussion | SPC | Acadia, Allen, Ascension, Avoyelles, Beauregard, Calcasieu and 30 more | 2 hr |
| Mar 26, 1:45 PM CST | Tornado Watch | SPC | Ascension, Assumption, East Baton Rouge, East Feliciana, Iberville, Livingston and 10 more | 7 hr |
| Mar 26, 3:30 PM CST | Tornado Watch | SPC | Allen, Avoyelles, Beauregard, Calcasieu, Caldwell, Catahoula and 20 more | 8 hr |
| Mar 26, 9:07 AM CST | Mesoscale Discussion | SPC | George, Greene, Jackson | 113 min |
| Mar 26, 4:42 PM CST | Mesoscale Discussion | SPC | Benton, Bolivar, Coahoma, DeSoto, Marshall, Panola and 3 more | 2 hr |
| Mar 26, 5:54 PM CST | Mesoscale Discussion | SPC | Clarke, Jasper, Kemper, Lauderdale, Lowndes, Newton and 2 more | 66 min |
Nearby
Mesoscale Discussions in Louisiana, 2005Mesoscale Discussions in Mississippi, 2005Every mesoscale discussion in 2005
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.