Alert archive / Alabama / Mesoscale Discussions in 2025

Mesoscale Discussion 997

May 26, 202518 counties in Alabama; Greene County, Mississippi

The Storm Prediction Center issued this mesoscale discussion at May 26, 2025, 5:45 PM CDT for 18 counties in Alabama; Greene County, Mississippi. It was in force for 60 min.

The area

The outline as issued.

The facts

Issued: May 26, 2025, 5:45 PM CDT (22:45 UTC)
Expired: May 26, 2025, 6:45 PM CDT
In force: 60 min
Issued by: the Storm Prediction Center
Concerning: Severe thunderstorm watch 332

Counties Autauga County, AL, Butler County, AL, Chilton County, AL, Clarke County, AL, Conecuh County, AL, Crenshaw County, AL, Dallas County, AL, Elmore County, AL, Greene County, AL, Hale County, AL, Lowndes County, AL, Marengo County, AL, Monroe County, AL, Montgomery County, AL, Perry County, AL, Pike County, AL, Washington County, AL, Wilcox County, AL, Greene County, MS

The radar

The Birmingham radar (KBMX), 148 km from the middle of the area, began a volume at 22:49 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

Birmingham, AL (KBMX), launched 12:00Z, 10.8 hours before the alert went out and 148 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: 23 J/kg
Mixed-layer CIN: -234 J/kg
Mixed-layer LCL: 843 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 20 m²/s²
0-3 km storm-relative helicity: 89 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, 7:03 PM CDT	Mesoscale Discussion	SPC	Bibb, Blount, Calhoun, Cherokee, Colbert, Cullman and 24 more	87 min
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, 10:57 AM CDT	Mesoscale Discussion	SPC	Adams, Amite, Claiborne, Copiah, Covington, Franklin and 14 more	2 hr
May 26, 12:17 PM CDT	Severe Thunderstorm Watch	SPC	Adams, Amite, Claiborne, Clarke, Copiah, Covington and 37 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 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.