Alert archive / Alabama / Mesoscale Discussions in 2025

Mesoscale Discussion 91

February 12, 202516 counties in Alabama; 4 counties in Mississippi

The Storm Prediction Center issued this mesoscale discussion at Feb 12, 2025, 6:45 PM CST for 16 counties in Alabama; 4 counties in Mississippi. It was in force for 90 min.

The area

The outline as issued.

The facts

Issued: Feb 12, 2025, 6:45 PM CST (00:45 UTC)
Expired: Feb 12, 2025, 8:15 PM CST
In force: 90 min
Issued by: the Storm Prediction Center
Concerning: Tornado watch 6

Counties Autauga County, AL, Bullock County, AL, Butler County, AL, Choctaw County, AL, Clarke County, AL, Crenshaw County, AL, Dallas County, AL, Elmore County, AL, Lowndes County, AL, Macon County, AL, Marengo County, AL, Monroe County, AL, Montgomery County, AL, Pike County, AL, Washington County, AL, Wilcox County, AL, Clarke County, MS, Jones County, MS, Lamar County, MS, Wayne County, MS

The radar

The Mobile radar (KMOB), 155 km from the middle of the area, began a volume at 00:47 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.

Tornado Watch 7Feb 12, 8:45 PM CST

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 0.8 hours before the alert went out and 156 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 676 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 552 m²/s²
0-3 km storm-relative helicity: 619 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 12, 8:45 PM CST	Tornado Watch	SPC	Autauga, Barbour, Bullock, Butler, Choctaw, Clarke and 16 more	6 hr
Feb 12, 9:10 PM CST	Mesoscale Discussion	SPC	Autauga, Barbour, Bullock, Butler, Clarke, Coffee and 15 more	95 min
Feb 12, 11:18 PM CST	Mesoscale Discussion	SPC	Barbour, Bullock, Butler, Coffee, Conecuh, Covington and 12 more	87 min
Feb 13, 12:59 AM CST	Mesoscale Discussion	SPC	Barbour, Bullock, Coffee, Covington, Dale, Geneva and 5 more	2 hr

Nearby

Mesoscale Discussions in Alabama, 2025 Mesoscale Discussions in Mississippi, 2025 Every 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.