Alert archive / Texas / Mesoscale Discussions in 2025

Mesoscale Discussion 739

May 8, 20256 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 8, 2025, 7:58 AM CDT for 6 counties in Texas. It was in force for 92 min.

The area

The outline as issued.

The facts

Issued: May 8, 2025, 7:58 AM CDT (12:58 UTC)
Expired: May 8, 2025, 9:30 AM CDT
In force: 92 min
Issued by: the Storm Prediction Center
Concerning: Severe potential...watch possible
Chance of a watch: 40%

Counties Brooks County, TX, Cameron County, TX, Hidalgo County, TX, Kenedy County, TX, Kleberg County, TX, Willacy County, TX

The radar

The Brownsville radar (KBRO), 90 km from the middle of the area, began a volume at 13:01 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, 1.0 hours before the alert went out and 430 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: 1138 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 759 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 37 m²/s²
0-3 km storm-relative helicity: 88 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.2

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 8, 11:32 AM CDT	Mesoscale Discussion	SPC	Brewster, Crockett, Pecos, Presidio, Terrell, Val Verde	118 min
May 8, 2:14 PM CDT	Mesoscale Discussion	SPC	Atascosa, Bandera, Dimmit, Duval, Edwards, Frio and 12 more	2 hr
May 8, 2:51 PM CDT	Severe Thunderstorm Watch	SPC	Brooks, Cameron, Dimmit, Edwards, Frio, Hidalgo and 12 more	8 hr
May 8, 5:25 PM CDT	Mesoscale Discussion	SPC	Brooks, Dimmit, Duval, Frio, Hidalgo, Jim Hogg and 8 more	95 min
May 8, 6:55 PM CDT	Mesoscale Discussion	SPC	Aransas, Bee, Brooks, Duval, Jim Wells, Kleberg and 4 more	65 min

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.