Alert archive / Texas / Mesoscale Discussions in 2026

Mesoscale Discussion 615

April 29, 2026Miller County, Arkansas; 12 parishes in Louisiana; 22 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 29, 2026, 10:21 AM CDT for Miller County, Arkansas; 12 parishes in Louisiana; 22 counties in Texas. It was in force for 114 min.

The area

The outline as issued.

The facts

Issued: Apr 29, 2026, 10:21 AM CDT (15:21 UTC)
Expired: Apr 29, 2026, 12:15 PM CDT
In force: 114 min
Issued by: the Storm Prediction Center
Concerning: Severe potential...watch possible
Chance of a watch: 60%

All 35 counties

Miller County, AR, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Jackson Parish, LA, Lincoln Parish, LA, Natchitoches Parish, LA, Red River Parish, LA, Sabine Parish, LA, Webster Parish, LA, Winn Parish, LA, Bowie County, TX, Camp County, TX, Cass County, TX, Delta County, TX, Franklin County, TX, Gregg County, TX, Harrison County, TX, Hopkins County, TX, Hunt County, TX, Lamar County, TX, Marion County, TX, Morris County, TX, Panola County, TX, Rains County, TX, Red River County, TX, Rusk County, TX, Shelby County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Van Zandt County, TX, Wood County, TX

The radar

The Shreveport radar (KSHV), 56 km from the middle of the area, began a volume at 15:23 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 180Apr 29, 11:10 AM CDT

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 3.4 hours before the alert went out and 270 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 838 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 184 m²/s²
0-3 km storm-relative helicity: 346 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 14.1

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
Apr 28, 7:29 PM CDT	Mesoscale Discussion	SPC	Arkansas, Calhoun, Clark, Cleburne, Cleveland, Conway and 31 more	2 hr
Apr 28, 8:23 PM CDT	Mesoscale Discussion	SPC	Ashley, Bradley, Calhoun, Chicot, Cleveland, Desha and 3 more	2 hr
Apr 28, 9:41 PM CDT	Tornado Watch	SPC	Crittenden, Lee, Phillips, St. Francis	4 hr
Apr 28, 11:25 PM CDT	Mesoscale Discussion	SPC	Arkansas, Ashley, Bradley, Chicot, Cleveland, Desha and 3 more	2 hr
Apr 29, 11:16 AM CDT	Severe Thunderstorm Watch	SPC	Columbia, Lafayette, Miller, Union	10 hr
Apr 29, 1:37 PM CDT	Mesoscale Discussion	SPC	Columbia, Lafayette, Miller, Union	113 min
Apr 29, 12:00 PM CDT	Mesoscale Discussion	SPC	Franklin, Madison, Tensas	2 hr
Apr 29, 1:19 PM CDT	Severe Thunderstorm Watch	SPC	Catahoula, Concordia, East Baton Rouge, East Carroll, East Feliciana, Franklin and 13 more	8 hr
Apr 29, 3:02 PM CDT	Mesoscale Discussion	SPC	Concordia, Franklin, Madison, Richland, Tensas, Washington	118 min
Apr 29, 5:20 PM CDT	Mesoscale Discussion	SPC	Allen, Avoyelles, Caldwell, Catahoula, Concordia, De Soto and 9 more	115 min
Apr 29, 5:43 PM CDT	Mesoscale Discussion	SPC	East Feliciana, Livingston, Saint Helena, Saint Tammany, Tangipahoa, Washington	2 hr
Apr 28, 7:02 PM CDT	Mesoscale Discussion	SPC	Ellis, Erath, Hill, Hood, Johnson, Navarro and 1 more	118 min
Apr 28, 7:50 PM CDT	Tornado Watch	SPC	Anderson, Falls, Freestone, Henderson, Houston, Leon and 5 more	5 hr
Apr 28, 9:28 PM CDT	Mesoscale Discussion	SPC	Falls, Freestone, Hill, Leon, Limestone, McLennan and 1 more	2 hr
Apr 29, 12:54 PM CDT	Mesoscale Discussion	SPC	Bandera, Bexar, Blanco, Caldwell, Comal, Edwards and 12 more	2 hr
Apr 29, 3:53 PM CDT	Severe Thunderstorm Watch	SPC	Bandera, Crockett, Dimmit, Edwards, Frio, Kerr and 10 more	8 hr
Apr 29, 5:50 PM CDT	Mesoscale Discussion	SPC	Bandera, Dimmit, Edwards, Frio, Kerr, Kinney and 7 more	85 min

Nearby

Mesoscale Discussions in Texas, 2026 Mesoscale Discussions in Louisiana, 2026 Mesoscale Discussions in Arkansas, 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.