Alert archive / Mississippi / Mesoscale Discussions in 2025

Mesoscale Discussion 421

April 5, 20254 states

The Storm Prediction Center issued this mesoscale discussion at Apr 5, 2025, 11:45 PM CDT for 4 states. It was in force for 90 min.

The area

The outline as issued.

The facts

Issued
Apr 5, 2025, 11:45 PM CDT (04:45 UTC)
Expired
Apr 6, 2025, 1:15 AM CDT
In force
90 min
Issued by
the Storm Prediction Center
Concerning
Tornado watch 125...128...129
All 91 counties

Colbert County, AL, Fayette County, AL, Franklin County, AL, Jackson County, AL, Lamar County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Marion County, AL, Morgan County, AL, Pickens County, AL, Winston County, AL, Concordia Parish, LA, East Feliciana Parish, LA, Saint Helena Parish, LA, Washington Parish, LA, West Feliciana Parish, LA, Adams County, MS, Amite County, MS, Attala County, MS, Calhoun County, MS, Carroll County, MS, Chickasaw County, MS, Choctaw County, MS, Claiborne County, MS, Clay County, MS, Copiah County, MS, Covington County, MS, Franklin County, MS, Hinds County, MS, Holmes County, MS, Itawamba County, MS, Jasper County, MS, Jefferson County, MS, Jefferson Davis County, MS, Kemper County, MS, Lawrence County, MS, Leake County, MS, Lee County, MS, Lincoln County, MS, Lowndes County, MS, Madison County, MS, Marion County, MS, Monroe County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Pike County, MS, Pontotoc County, MS, Prentiss County, MS, Rankin County, MS, Scott County, MS, Simpson County, MS, Smith County, MS, Tishomingo County, MS, Walthall County, MS, Warren County, MS, Webster County, MS, Wilkinson County, MS, Winston County, MS, Yazoo County, MS, Bedford County, TN, Bledsoe County, TN, Cannon County, TN, Coffee County, TN, Cumberland County, TN, DeKalb County, TN, Fentress County, TN, Franklin County, TN, Giles County, TN, Grundy County, TN, Jackson County, TN, Lawrence County, TN, Lincoln County, TN, Marion County, TN, Marshall County, TN, Meigs County, TN, Moore County, TN, Morgan County, TN, Overton County, TN, Putnam County, TN, Rhea County, TN, Roane County, TN, Rutherford County, TN, Sequatchie County, TN, Van Buren County, TN, Warren County, TN, White County, TN

The radar

The Columbus AFB radar (KGWX), 73 km from the middle of the area, began a volume at 04:45 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, 4.8 hours before the alert went out and 162 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-pSkew-T log-p diagram, Birmingham, AL at 00:00Z on 2025-04-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 291 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 00:00Z on 2025-04-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 126 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
291 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
1358 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
126 m²/s²
0-3 km storm-relative helicity
207 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.6

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.

IssuedProductOfficeCountiesLasted
Apr 5, 8:15 PM CDTMesoscale DiscussionSPCColbert, Franklin, Jackson, Lauderdale, Lawrence, Limestone and 3 more90 min
Apr 5, 8:30 PM CDTTornado WatchSPCColbert, Cullman, DeKalb, Fayette, Franklin, Jackson and 11 more7 hr
Apr 6, 1:36 AM CDTMesoscale DiscussionSPCBlount, Cherokee, DeKalb, Etowah, Marshall, St. Clair54 min
Apr 6, 2:46 AM CDTTornado WatchSPCAutauga, Bibb, Blount, Calhoun, Cherokee, Chilton and 25 more7 hr
Apr 6, 3:27 AM CDTMesoscale DiscussionSPCBibb, Chilton, Choctaw, Greene, Hale, Jefferson and 5 more2 hr
Apr 6, 5:37 AM CDTMesoscale DiscussionSPCChoctaw, Greene, Hale, Marengo, Sumter113 min
Apr 6, 7:34 AM CDTMesoscale DiscussionSPCAutauga, Bibb, Chilton, Choctaw, Clarke, Clay and 7 more116 min
Apr 6, 9:09 AM CDTMesoscale DiscussionSPCAutauga, Baldwin, Barbour, Bullock, Butler, Calhoun and 32 more96 min
Apr 6, 10:01 AM CDTTornado WatchSPCAutauga, Baldwin, Barbour, Bullock, Butler, Chambers and 27 more9 hr
Apr 6, 12:53 PM CDTMesoscale DiscussionSPCBaldwin, Barbour, Bullock, Butler, Chambers, Coffee and 17 more97 min
Apr 6, 3:48 PM CDTMesoscale DiscussionSPCBaldwin, Barbour, Coffee, Conecuh, Covington, Crenshaw and 8 more87 min
Apr 6, 6:18 PM CDTMesoscale DiscussionSPCAutauga, Baldwin, Bullock, Butler, Coffee, Conecuh and 13 more117 min
Apr 5, 8:39 PM CDTMesoscale DiscussionSPCAllen, Avoyelles, Beauregard, Caldwell, Catahoula, Concordia and 14 more96 min
Apr 5, 10:25 PM CDTTornado WatchSPCEast Feliciana, Pointe Coupee, Saint Helena, West Feliciana9 hr
Apr 6, 12:36 AM CDTTornado WatchSPCBledsoe, Blount, Bradley, Hamilton, Loudon, McMinn and 7 more4 hr

Nearby

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