Alert archive / Alabama / Mesoscale Discussions in 2025
Mesoscale Discussion 321
The Storm Prediction Center issued this mesoscale discussion at Mar 31, 2025, 2:21 AM CDT for 5 states. It was in force for 114 min.
The area
The outline as issued.
The facts
- Issued
- Mar 31, 2025, 2:21 AM CDT (07:21 UTC)
- Expired
- Mar 31, 2025, 4:15 AM CDT
- In force
- 114 min
- Issued by
- the Storm Prediction Center
- Concerning
- Tornado watch 78...81...82
All 69 counties
Bibb County, AL, Blount County, AL, Calhoun County, AL, Cherokee County, AL, Colbert County, AL, Cullman County, AL, DeKalb County, AL, Etowah County, AL, Fayette County, AL, Franklin County, AL, Jackson County, AL, Jefferson County, AL, Lamar County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Marion County, AL, Marshall County, AL, Morgan County, AL, Pickens County, AL, Shelby County, AL, St. Clair County, AL, Talladega County, AL, Tuscaloosa County, AL, Walker County, AL, Winston County, AL, Bartow County, GA, Catoosa County, GA, Chattooga County, GA, Dade County, GA, Fannin County, GA, Floyd County, GA, Gilmer County, GA, Gordon County, GA, Murray County, GA, Polk County, GA, Walker County, GA, Whitfield County, GA, Itawamba County, MS, Monroe County, MS, Prentiss County, MS, Tishomingo County, MS, Cherokee County, NC, Bedford County, TN, Bledsoe County, TN, Bradley County, TN, Coffee County, TN, Cumberland County, TN, Franklin County, TN, Giles County, TN, Grundy County, TN, Hamilton County, TN, Lawrence County, TN, Lincoln County, TN, Loudon County, TN, Marion County, TN, Marshall County, TN, McMinn County, TN, Meigs County, TN, Monroe County, TN, Moore County, TN, Polk County, TN, Rhea County, TN, Roane County, TN, Sequatchie County, TN, Van Buren County, TN, Warren County, TN, White County, TN
The radar
The Northeast Alabama radar (KHTX), 58 km from the middle of the area, began a volume at 07:21 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
Birmingham, AL (KBMX), launched 00:00Z, 7.4 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.
- Mixed-layer CAPE
- 443 J/kg
- Mixed-layer CIN
- -219 J/kg
- Mixed-layer LCL
- 870 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 74 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 30, 11:05 PM CDT | Tornado Watch | SPC | Colbert, Cullman, Fayette, Franklin, Lamar, Lauderdale and 7 more | 6 hr |
| Mar 31, 4:48 AM CDT | Severe Thunderstorm Watch | SPC | Autauga, Barbour, Bibb, Blount, Bullock, Calhoun and 42 more | 7 hr |
| Mar 31, 5:25 AM CDT | Mesoscale Discussion | SPC | Baldwin, Butler, Choctaw, Clarke, Conecuh, Covington and 5 more | 95 min |
| Mar 31, 6:04 AM CDT | Mesoscale Discussion | SPC | Fayette, Jefferson, Lamar, Marion, Pickens, Tuscaloosa and 2 more | 86 min |
| Mar 31, 6:04 AM CDT | Severe Thunderstorm Watch | SPC | Baldwin, Butler, Choctaw, Clarke, Conecuh, Covington and 6 more | 6 hr |
| Mar 31, 8:34 AM CDT | Mesoscale Discussion | SPC | Barbour, Dale, Geneva, Henry, Houston, Russell | 116 min |
| Mar 31, 10:52 AM CDT | Severe Thunderstorm Watch | SPC | Coffee, Dale, Geneva, Henry, Houston | 6 hr |
| Mar 31, 12:54 PM CDT | Mesoscale Discussion | SPC | Henry, Houston | 2 hr |
| Mar 31, 10:33 AM CDT | Severe Thunderstorm Watch | SPC | Baldwin, Banks, Barrow, Bibb, Bleckley, Burke and 84 more | 7 hr |
| Mar 31, 11:55 AM CDT | Mesoscale Discussion | SPC | Baldwin, Barrow, Bibb, Bleckley, Butts, Chattahoochee and 61 more | 95 min |
| Mar 31, 2:03 PM CDT | Mesoscale Discussion | SPC | Columbia, Elbert, Hart, Lincoln, McDuffie, Richmond and 3 more | 87 min |
| Mar 31, 2:17 PM CDT | Severe Thunderstorm Watch | SPC | Appling, Atkinson, Bacon, Ben Hill, Berrien, Brantley and 27 more | 5 hr |
| Mar 30, 8:37 PM CDT | Mesoscale Discussion | SPC | Bolivar, Carroll, Coahoma, Grenada, Holmes, Humphreys and 11 more | 2 hr |
| Mar 30, 10:33 PM CDT | Mesoscale Discussion | SPC | DeSoto | 57 min |
| Mar 31, 12:39 AM CDT | Mesoscale Discussion | SPC | Adams, Claiborne, Humphreys, Issaquena, Jefferson, Sharkey and 4 more | 2 hr |
| Mar 31, 1:35 AM CDT | Severe Thunderstorm Watch | SPC | Adams, Attala, Bolivar, Carroll, Choctaw, Claiborne and 41 more | 6 hr |
| Mar 31, 3:48 AM CDT | Severe Thunderstorm Watch | SPC | Amite, Hancock, Harrison, Jackson, Pearl River, Pike and 2 more | 7 hr |
| Mar 31, 6:16 AM CDT | Mesoscale Discussion | SPC | Amite, Clarke, Copiah, Covington, Forrest, Franklin and 25 more | 89 min |
| Mar 30, 11:29 PM CDT | Mesoscale Discussion | SPC | Cherokee, Clay, Graham, Haywood, Jackson, Macon and 1 more | 46 min |
| Mar 31, 1:45 PM CDT | Mesoscale Discussion | SPC | Alamance, Alexander, Alleghany, Ashe, Bertie, Burke and 41 more | 2 hr |
| Mar 31, 3:07 PM CDT | Severe Thunderstorm Watch | SPC | Alamance, Anson, Bladen, Chatham, Columbus, Cumberland and 33 more | 6 hr |
| Mar 31, 6:27 PM CDT | Mesoscale Discussion | SPC | Edgecombe, Franklin, Greene, Halifax, Hertford, Johnston and 5 more | 93 min |
| Mar 30, 8:02 PM CDT | Mesoscale Discussion | SPC | Benton, Carroll, Cheatham, Chester, Clay, Crockett and 39 more | 118 min |
| Mar 30, 8:32 PM CDT | Tornado Watch | SPC | Bedford, Benton, Cannon, Carroll, Cheatham, Chester and 42 more | 6 hr |
| Mar 31, 12:40 AM CDT | Tornado Watch | SPC | Anderson, Bledsoe, Blount, Bradley, Campbell, Claiborne and 16 more | 4 hr |
Nearby
Mesoscale Discussions in Alabama, 2025Mesoscale Discussions in Tennessee, 2025Mesoscale Discussions in Georgia, 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.