Alert archive / Texas / Mesoscale Discussions in 2025

Mesoscale Discussion 403

April 4, 202527 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 4, 2025, 10:44 PM CDT for 27 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Apr 4, 2025, 10:44 PM CDT (03:44 UTC)
Expired: Apr 5, 2025, 12:45 AM CDT
In force: 2 hr
Issued by: the Storm Prediction Center
Concerning: Severe potential...watch likely
Chance of a watch: 80%

All 27 counties

Bandera County, TX, Blanco County, TX, Burnet County, TX, Concho County, TX, Coryell County, TX, Edwards County, TX, Gillespie County, TX, Hays County, TX, Kendall County, TX, Kerr County, TX, Kimble County, TX, Kinney County, TX, Lampasas County, TX, Llano County, TX, Mason County, TX, McCulloch County, TX, Medina County, TX, Menard County, TX, Mills County, TX, Real County, TX, San Saba County, TX, Schleicher County, TX, Sutton County, TX, Travis County, TX, Uvalde County, TX, Val Verde County, TX, Williamson County, TX

The radar

The Laughlin AFB radar (KDFX), 107 km from the middle of the area, began a volume at 03:45 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.

Severe Thunderstorm Watch 121Apr 4, 11:00 PM CDT

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 3.7 hours before the alert went out and 130 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: 85 J/kg
Mixed-layer CIN: -451 J/kg
Mixed-layer LCL: 1448 m above ground
0-6 km bulk shear: 86 kt
0-1 km storm-relative helicity: 103 m²/s²
0-3 km storm-relative helicity: 480 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
Apr 4, 8:50 PM CDT	Tornado Watch	SPC	Bowie, Cass, Gregg, Harrison, Marion, Morris and 3 more	9 hr
Apr 4, 11:02 PM CDT	Severe Thunderstorm Watch	SPC	Bandera, Bell, Bexar, Blanco, Brown, Burnet and 34 more	6 hr
Apr 5, 1:36 AM CDT	Mesoscale Discussion	SPC	Archer, Bandera, Baylor, Bell, Blanco, Bosque and 49 more	114 min
Apr 5, 9:56 AM CDT	Tornado Watch	SPC	Angelina, Nacogdoches, Panola, Sabine, San Augustine, Shelby	9 hr
Apr 5, 10:06 AM CDT	Mesoscale Discussion	SPC	Brazoria, Chambers, Fort Bend, Galveston, Hardin, Harris and 14 more	2 hr
Apr 5, 12:36 PM CDT	Tornado Watch	SPC	Brazoria, Chambers, Fort Bend, Galveston, Hardin, Harris and 9 more	8 hr
Apr 5, 12:48 PM CDT	Mesoscale Discussion	SPC	Bowie, Camp, Cass, Delta, Franklin, Gregg and 12 more	117 min
Apr 5, 2:37 PM CDT	Mesoscale Discussion	SPC	Chambers, Fort Bend, Hardin, Harris, Jasper, Jefferson and 8 more	83 min
Apr 5, 6:39 PM CDT	Tornado Watch	SPC	Hardin, Jasper, Newton, Sabine, Tyler	5 hr

Nearby

Mesoscale Discussions in Texas, 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.