Alert archive / Mississippi / Mesoscale Discussions in 2018
Mesoscale Discussion 190
The Storm Prediction Center issued this mesoscale discussion at Mar 28, 2018, 5:32 PM CDT for Madison Parish, Tensas Parish, Louisiana; 20 counties in Mississippi. It was in force for 118 min.
The area
The outline as issued.
The facts
- Issued
- Mar 28, 2018, 5:32 PM CDT (22:32 UTC)
- Expired
- Mar 28, 2018, 7:30 PM CDT
- In force
- 118 min
- Issued by
- the Storm Prediction Center
All 22 counties
Madison Parish, LA, Tensas Parish, LA, Attala County, MS, Calhoun County, MS, Carroll County, MS, Chickasaw County, MS, Choctaw County, MS, Grenada County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Lafayette County, MS, Leflore County, MS, Madison County, MS, Montgomery County, MS, Pontotoc County, MS, Sharkey County, MS, Tallahatchie County, MS, Warren County, MS, Webster County, MS, Yalobusha County, MS, Yazoo County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 90 km from the middle of the area, began a volume at 22:36 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 12:00Z, 10.5 hours before the alert went out and 82 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
- 44 J/kg
- Mixed-layer CIN
- -151 J/kg
- Mixed-layer LCL
- 642 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 169 m²/s²
- 0-3 km storm-relative helicity
- 214 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Mar 28, 11:38 AM CDT | Mesoscale Discussion | SPC | Beauregard, Caldwell, Franklin, Grant, Jackson, LaSalle and 7 more | 67 min |
| Mar 28, 12:03 PM CDT | Tornado Watch | SPC | Allen, Avoyelles, Beauregard, Bienville, Calcasieu, Caldwell and 12 more | 9 hr |
| Mar 28, 2:43 PM CDT | Mesoscale Discussion | SPC | East Carroll, Franklin, Madison, Morehouse, Richland, Tensas and 1 more | 92 min |
| Mar 28, 3:07 PM CDT | Mesoscale Discussion | SPC | Allen, Beauregard, Caldwell, Grant, Jackson, LaSalle and 4 more | 113 min |
| Mar 28, 3:27 PM CDT | Tornado Watch | SPC | Catahoula, Concordia, East Carroll, Franklin, Madison, Morehouse and 3 more | 8 hr |
| Mar 28, 5:48 PM CDT | Mesoscale Discussion | SPC | Allen, Beauregard, Calcasieu, Evangeline, Grant, LaSalle and 2 more | 87 min |
Nearby
Mesoscale Discussions in Mississippi, 2018Mesoscale Discussions in Louisiana, 2018Every mesoscale discussion in 2018
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.