Alert archive / Alabama / Mesoscale Discussions in 2026

Mesoscale Discussion 2136

August 26, 202621 counties in Alabama; 13 counties in Mississippi; 4 counties in Tennessee

The Storm Prediction Center issued this mesoscale discussion at Aug 26, 2026, 12:02 PM CDT for 21 counties in Alabama; 13 counties in Mississippi; 4 counties in Tennessee. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Aug 26, 2026, 12:02 PM CDT (17:02 UTC)
Expired: Aug 26, 2026, 2:30 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center
Concerning: Severe potential...watch unlikely
Chance of a watch: 20%

All 38 counties

Bibb County, AL, Colbert County, AL, Cullman County, AL, Fayette County, AL, Franklin County, AL, Greene County, AL, Hale County, AL, Jefferson County, AL, Lamar County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Marengo County, AL, Marion County, AL, Morgan County, AL, Perry County, AL, Pickens County, AL, Sumter County, AL, Tuscaloosa County, AL, Walker County, AL, Winston County, AL, Alcorn County, MS, Clay County, MS, Itawamba County, MS, Kemper County, MS, Lauderdale County, MS, Lee County, MS, Lowndes County, MS, Monroe County, MS, Noxubee County, MS, Oktibbeha County, MS, Prentiss County, MS, Tippah County, MS, Tishomingo County, MS, Giles County, TN, Hardin County, TN, Lawrence County, TN, Wayne County, TN

The radar

The Columbus AFB radar (KGWX), 48 km from the middle of the area, began a volume at 17:03 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

Birmingham, AL (KBMX), launched 12:00Z, 5.0 hours before the alert went out and 117 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: 374 J/kg
Mixed-layer CIN: -113 J/kg
Mixed-layer LCL: 1336 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 50 m²/s²
0-3 km storm-relative helicity: 61 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
Aug 26, 4:53 PM CDT	Mesoscale Discussion	SPC	Autauga, Bibb, Butler, Chilton, Choctaw, Clarke and 21 more	2 hr

Nearby

Mesoscale Discussions in Alabama, 2026 Mesoscale Discussions in Mississippi, 2026 Mesoscale Discussions in Tennessee, 2026 Every mesoscale discussion in 2026

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.