Alert archive / Mississippi / Mesoscale Discussions in 2025

Mesoscale Discussion 979

May 25, 20255 states

The Storm Prediction Center issued this mesoscale discussion at May 25, 2025, 7:03 PM CDT for 5 states. It was in force for 87 min.

The area

The outline as issued.

The facts

Issued: May 25, 2025, 7:03 PM CDT (00:03 UTC)
Expired: May 25, 2025, 8:30 PM CDT
In force: 87 min
Issued by: the Storm Prediction Center
Concerning: Severe thunderstorm watch 322...324

All 78 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, Greene County, AL, Hale 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, Sumter County, AL, Talladega County, AL, Tuscaloosa County, AL, Walker County, AL, Winston County, AL, Chicot County, AR, Desha County, AR, East Carroll Parish, LA, Alcorn County, MS, Attala County, MS, Benton County, MS, Bolivar County, MS, Calhoun County, MS, Carroll County, MS, Chickasaw County, MS, Choctaw County, MS, Clay County, MS, Grenada County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Itawamba County, MS, Kemper County, MS, Lafayette County, MS, Lauderdale County, MS, Leake County, MS, Lee County, MS, Leflore County, MS, Lowndes County, MS, Madison County, MS, Monroe County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Pontotoc County, MS, Prentiss County, MS, Rankin County, MS, Scott County, MS, Sharkey County, MS, Sunflower County, MS, Tallahatchie County, MS, Tippah County, MS, Tishomingo County, MS, Union County, MS, Washington County, MS, Webster County, MS, Winston County, MS, Yalobusha County, MS, Yazoo County, MS, McNairy County, TN

The radar

The Columbus AFB radar (KGWX), 96 km from the middle of the area, began a volume at 00:06 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.

Severe Thunderstorm Watch 328May 25, 7:55 PM CDT

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 0.1 hours before the alert went out and 163 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: 2791 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 1087 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 130 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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
May 25, 7:56 PM CDT	Severe Thunderstorm Watch	SPC	Autauga, Barbour, Bibb, Bullock, Butler, Calhoun and 31 more	5 hr
May 25, 9:41 PM CDT	Mesoscale Discussion	SPC	Autauga, Bibb, Blount, Calhoun, Cherokee, Chilton and 22 more	94 min
May 25, 10:04 PM CDT	Mesoscale Discussion	SPC	Clarke, Washington	86 min
May 25, 11:43 PM CDT	Mesoscale Discussion	SPC	Autauga, Barbour, Bibb, Bullock, Chambers, Chilton and 16 more	92 min
May 26, 3:46 PM CDT	Mesoscale Discussion	SPC	Autauga, Butler, Choctaw, Clarke, Conecuh, Dallas and 7 more	89 min
May 26, 4:00 PM CDT	Severe Thunderstorm Watch	SPC	Autauga, Barbour, Bibb, Bullock, Butler, Chambers and 23 more	5 hr
May 26, 5:45 PM CDT	Mesoscale Discussion	SPC	Autauga, Butler, Chilton, Clarke, Conecuh, Crenshaw and 12 more	60 min
May 26, 10:57 AM CDT	Mesoscale Discussion	SPC	Avoyelles, Caldwell, Catahoula, Concordia, Franklin, Grant and 5 more	2 hr
May 26, 12:17 PM CDT	Severe Thunderstorm Watch	SPC	East Baton Rouge, East Carroll, East Feliciana, Livingston, Madison, Pointe Coupee and 7 more	7 hr
May 26, 12:47 PM CDT	Mesoscale Discussion	SPC	Adams, Amite, Claiborne, Copiah, Covington, Franklin and 13 more	118 min

Nearby

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