Alert archive / Texas / Mesoscale Discussions in 2026

Mesoscale Discussion 862

May 26, 202618 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 26, 2026, 3:07 PM CDT for 18 counties in Texas. It was in force for 83 min.

The area

The outline as issued.

The facts

Issued: May 26, 2026, 3:07 PM CDT (20:07 UTC)
Expired: May 26, 2026, 4:30 PM CDT
In force: 83 min
Issued by: the Storm Prediction Center
Concerning: Severe thunderstorm watch 244

Counties Bandera County, TX, Bexar County, TX, Dimmit County, TX, Edwards County, TX, Frio County, TX, Gillespie County, TX, Kendall County, TX, Kerr County, TX, Kimble County, TX, Kinney County, TX, Maverick County, TX, Medina County, TX, Real County, TX, Schleicher County, TX, Sutton County, TX, Uvalde County, TX, Val Verde County, TX, Zavala County, TX

The radar

The Laughlin AFB radar (KDFX), 40 km from the middle of the area, began a volume at 20:07 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

Del Rio, TX (KDRT), launched 12:00Z, 8.1 hours before the alert went out and 82 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: 464 J/kg
Mixed-layer CIN: -172 J/kg
Mixed-layer LCL: 1147 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 110 m²/s²
0-3 km storm-relative helicity: 175 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

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 26, 7:53 AM CDT	Mesoscale Discussion	SPC	Pecos	97 min
May 26, 12:28 PM CDT	Mesoscale Discussion	SPC	Crockett, Edwards, Kimble, Kinney, Real, Sutton and 2 more	2 hr
May 26, 1:32 PM CDT	Severe Thunderstorm Watch	SPC	Atascosa, Bandera, Concho, Crockett, Dimmit, Edwards and 19 more	7 hr
May 26, 5:20 PM CDT	Mesoscale Discussion	SPC	Atascosa, Dimmit, Frio, Kinney, La Salle, Live Oak and 5 more	85 min
May 26, 6:28 PM CDT	Mesoscale Discussion	SPC	Brewster, Culberson, Jeff Davis, Loving, Pecos, Reeves and 2 more	92 min

Nearby

Mesoscale Discussions in Texas, 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.