Alert archive / Mississippi / Mesoscale Discussions in 2025
Mesoscale Discussion 90
The Storm Prediction Center issued this mesoscale discussion at Feb 12, 2025, 5:11 PM CST for 6 counties in Alabama; Saint Helena Parish, Tangipahoa Parish, Washington Parish, Louisiana; 18 counties in Mississippi. It was in force for 94 min.
The area
The outline as issued.
The facts
- Issued
- Feb 12, 2025, 5:11 PM CST (23:11 UTC)
- Expired
- Feb 12, 2025, 6:45 PM CST
- In force
- 94 min
- Issued by
- the Storm Prediction Center
- Concerning
- Tornado watch 5...6
All 27 counties
Choctaw County, AL, Clarke County, AL, Marengo County, AL, Monroe County, AL, Washington County, AL, Wilcox County, AL, Saint Helena Parish, LA, Tangipahoa Parish, LA, Washington Parish, LA, Clarke County, MS, Covington County, MS, Forrest County, MS, George County, MS, Greene County, MS, Jasper County, MS, Jefferson Davis County, MS, Jones County, MS, Lamar County, MS, Lawrence County, MS, Marion County, MS, Pearl River County, MS, Perry County, MS, Pike County, MS, Smith County, MS, Stone County, MS, Walthall County, MS, Wayne County, MS
The radar
The Mobile radar (KMOB), 98 km from the middle of the area, began a volume at 23:10 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 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, 11.2 hours before the alert went out and 161 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 710 m above ground
- 0-6 km bulk shear
- 70 kt
- 0-1 km storm-relative helicity
- -182 m²/s²
- 0-3 km storm-relative helicity
- 416 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 |
|---|---|---|---|---|
| Feb 12, 11:36 AM CST | Mesoscale Discussion | SPC | Choctaw, Clarke, Greene, Hale, Marengo, Perry and 2 more | 2 hr |
| Feb 12, 1:32 PM CST | Tornado Watch | SPC | Baldwin, Choctaw, Clarke, Conecuh, Dallas, Escambia and 6 more | 8 hr |
| Feb 12, 1:48 PM CST | Mesoscale Discussion | SPC | Choctaw, Greene, Marengo, Sumter | 3 hr |
| Feb 12, 2:08 AM CST | Mesoscale Discussion | SPC | De Soto, Grant, Natchitoches, Red River, Sabine, Vernon and 1 more | 67 min |
| Feb 12, 12:04 PM CST | Tornado Watch | SPC | Acadia, Allen, Ascension, Assumption, Avoyelles, Beauregard and 35 more | 8 hr |
Nearby
Mesoscale Discussions in Mississippi, 2025Mesoscale Discussions in Alabama, 2025Mesoscale Discussions in Louisiana, 2025Every mesoscale discussion in 2025
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.