Alert archive / Mississippi / Mesoscale Discussions in 2024
Mesoscale Discussion 404
The Storm Prediction Center issued this mesoscale discussion at Apr 9, 2024, 7:49 PM CDT for Tensas Parish, Louisiana; 6 counties in Mississippi. It was in force for 86 min.
The area
The outline as issued.
The facts
- Issued
- Apr 9, 2024, 7:49 PM CDT (00:49 UTC)
- Expired
- Apr 9, 2024, 9:15 PM CDT
- In force
- 86 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe thunderstorm watch 97
Counties Tensas Parish, LA, Hinds County, MS, Issaquena County, MS, Madison County, MS, Rankin County, MS, Warren County, MS, Yazoo County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 75 km from the middle of the area, began a volume at 00:48 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
Jackson, MS (KJAN), launched 00:00Z, 0.8 hours before the alert went out and 66 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
- 191 J/kg
- Mixed-layer CIN
- -44 J/kg
- Mixed-layer LCL
- 588 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 193 m²/s²
- 0-3 km storm-relative helicity
- 309 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 0.9
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 9, 7:32 PM CDT | Mesoscale Discussion | SPC | Allen, Beauregard, Calcasieu, Vernon | 88 min |
| Apr 10, 3:21 AM CDT | Mesoscale Discussion | SPC | Acadia, Allen, Beauregard, Calcasieu, Cameron, Evangeline and 2 more | 114 min |
| Apr 10, 3:47 AM CDT | Tornado Watch | SPC | Acadia, Allen, Avoyelles, Beauregard, Calcasieu, Cameron and 10 more | 5 hr |
| Apr 10, 5:35 AM CDT | Mesoscale Discussion | SPC | Acadia, Allen, Ascension, Assumption, Avoyelles, Beauregard and 26 more | 115 min |
| Apr 10, 6:06 AM CDT | Tornado Watch | SPC | Ascension, Assumption, Concordia, East Baton Rouge, East Feliciana, Iberville and 17 more | 9 hr |
| Apr 10, 7:16 AM CDT | Mesoscale Discussion | SPC | Acadia, Allen, Ascension, Assumption, Avoyelles, Cameron and 22 more | 89 min |
| Apr 10, 9:01 AM CDT | Mesoscale Discussion | SPC | Ascension, Assumption, East Baton Rouge, East Feliciana, Iberville, Livingston and 13 more | 89 min |
| Apr 10, 11:01 AM CDT | Mesoscale Discussion | SPC | Orleans, Saint Bernard | 89 min |
| Apr 10, 5:01 AM CDT | Mesoscale Discussion | SPC | Attala, Choctaw, Copiah, Covington, Franklin, Jefferson Davis and 14 more | 119 min |
Nearby
Mesoscale Discussions in Mississippi, 2024Mesoscale Discussions in Louisiana, 2024Every mesoscale discussion in 2024
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.