Alert archive / Alabama / Mesoscale Discussions in 2025
Mesoscale Discussion 166
The Storm Prediction Center issued this mesoscale discussion at Mar 13, 2025, 7:59 AM CDT for 18 counties in Alabama; 13 counties in Mississippi. It was in force for 91 min.
The area
The outline as issued.
The facts
- Issued
- Mar 13, 2025, 7:59 AM CDT (12:59 UTC)
- Expired
- Mar 13, 2025, 9:30 AM CDT
- In force
- 91 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch unlikely
- Chance of a watch
- 20%
All 31 counties
Bibb County, AL, Blount County, AL, Chilton County, AL, Cullman County, AL, Etowah County, AL, Fayette County, AL, Franklin County, AL, Jefferson County, AL, Lamar County, AL, Lawrence County, AL, Marion County, AL, Pickens County, AL, Shelby County, AL, St. Clair County, AL, Talladega County, AL, Tuscaloosa County, AL, Walker County, AL, Winston County, AL, Calhoun County, MS, Chickasaw County, MS, Choctaw County, MS, Clay County, MS, Itawamba County, MS, Lee County, MS, Lowndes County, MS, Monroe County, MS, Oktibbeha County, MS, Pontotoc County, MS, Prentiss County, MS, Union County, MS, Webster County, MS
The radar
The Birmingham radar (KBMX), 82 km from the middle of the area, began a volume at 13:03 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
Little Rock, AR (KLZK), launched 12:00Z, 1.0 hours before the alert went out and 264 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
- 285 J/kg
- Mixed-layer CIN
- -270 J/kg
- Mixed-layer LCL
- 964 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 237 m²/s²
- 0-3 km storm-relative helicity
- 220 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 13, 11:17 AM CDT | Mesoscale Discussion | SPC | Autauga, Barbour, Bibb, Bullock, Butler, Chambers and 18 more | 2 hr |
| Mar 13, 4:20 PM CDT | Mesoscale Discussion | SPC | Blount, Calhoun, Cherokee, Colbert, Cullman, Etowah and 10 more | 115 min |
Nearby
Mesoscale Discussions in Alabama, 2025Mesoscale Discussions in Mississippi, 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.