Alert archive / Texas / Mesoscale Discussions in 2020

Mesoscale Discussion 712

May 24, 202026 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 24, 2020, 5:28 PM CDT for 26 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 24, 2020, 5:28 PM CDT (22:28 UTC)
Expired
May 24, 2020, 7:30 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
Concerning
Severe thunderstorm watch 218
All 26 counties

Atascosa County, TX, Bandera County, TX, Bexar County, TX, Dimmit County, TX, Duval County, TX, Edwards County, TX, Frio County, TX, Gillespie County, TX, Kendall County, TX, Kerr County, TX, Kimble County, TX, Kinney County, TX, La Salle County, TX, Live Oak County, TX, Mason County, TX, Maverick County, TX, McMullen County, TX, Medina County, TX, Menard County, TX, Real County, TX, Schleicher County, TX, Sutton County, TX, Uvalde County, TX, Val Verde County, TX, Webb County, TX, Zavala County, TX

The radar

The Laughlin AFB radar (KDFX), 53 km from the middle of the area, began a volume at 22:32 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.

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 10.5 hours before the alert went out and 105 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-pSkew-T log-p diagram, Del Rio, TX at 12:00Z on 2020-05-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1975 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 12:00Z on 2020-05-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 159 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1975 J/kg
Mixed-layer CIN
-106 J/kg
Mixed-layer LCL
716 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
159 m²/s²
0-3 km storm-relative helicity
208 m²/s²
Significant tornado parameter
0.0
Supercell composite
10.4

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.

IssuedProductOfficeCountiesLasted
May 23, 8:48 PM CDTMesoscale DiscussionSPCArcher, Clay, Montague, Wheeler, Wichita, Wilbarger117 min
May 23, 9:33 PM CDTSevere Thunderstorm WatchSPCArcher, Baylor, Clay, Haskell, Jack, Jones and 8 more4 hr
May 23, 11:36 PM CDTMesoscale DiscussionSPCArcher, Clay, Jack, Montague, Palo Pinto, Parker and 4 more114 min
May 24, 12:21 PM CDTMesoscale DiscussionSPCBorden, Coke, Crane, Crockett, Dawson, Glasscock and 13 more114 min
May 24, 12:39 PM CDTMesoscale DiscussionSPCAnderson, Angelina, Austin, Bowie, Brazos, Burleson and 60 more96 min
May 24, 1:58 PM CDTSevere Thunderstorm WatchSPCBorden, Brewster, Coke, Crane, Crockett, Dawson and 19 more6 hr
May 24, 3:07 PM CDTMesoscale DiscussionSPCArmstrong, Briscoe, Carson, Castro, Childress, Collingsworth and 27 more83 min
May 24, 3:26 PM CDTSevere Thunderstorm WatchSPCArmstrong, Briscoe, Carson, Childress, Collingsworth, Cottle and 23 more7 hr
May 24, 3:48 PM CDTMesoscale DiscussionSPCBorden, Coke, Crane, Crockett, Dawson, Fisher and 20 more87 min
May 24, 5:56 PM CDTSevere Thunderstorm WatchSPCAtascosa, Bandera, Bexar, Brooks, Dimmit, Duval and 17 more6 hr
May 24, 6:39 PM CDTMesoscale DiscussionSPCArmstrong, Briscoe, Carson, Childress, Collingsworth, Cottle and 23 more2 hr
May 24, 6:58 PM CDTMesoscale DiscussionSPCBrown, Callahan, Coleman, Comanche, Concho, Eastland and 15 more2 hr

Nearby

Mesoscale Discussions in Texas, 2020Every mesoscale discussion in 2020

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.