Alert archive / Texas / Mesoscale Discussions in 2022

Mesoscale Discussion 653

May 4, 2022Bexar County, Medina County, Texas

The Storm Prediction Center issued this mesoscale discussion at May 4, 2022, 10:45 PM CDT for Bexar County, Medina County, Texas. It was in force for 90 min.

The area

The outline as issued.

The facts

Issued
May 4, 2022, 10:45 PM CDT (03:45 UTC)
Expired
May 5, 2022, 12:15 AM CDT
In force
90 min
Issued by
the Storm Prediction Center
Concerning
Severe thunderstorm watch 179

Counties Bexar County, TX, Medina County, TX

The radar

The Laughlin AFB radar (KDFX), 100 km from the middle of the area, began a volume at 03:44 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 00:00Z, 3.8 hours before the alert went out and 153 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 00:00Z on 2022-05-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 838 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 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 00:00Z on 2022-05-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 37 square meters per square second.19395878Sfc1 km3 km6 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
838 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
1383 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
37 m²/s²
0-3 km storm-relative helicity
-61 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.

IssuedProductOfficeCountiesLasted
May 4, 7:16 PM CDTMesoscale DiscussionSPCCoke, Crockett, Edwards, Fisher, Glasscock, Haskell and 18 more119 min
May 4, 7:36 PM CDTMesoscale DiscussionSPCBaylor, Childress, Collingsworth, Cottle, Foard, Hall and 4 more84 min
May 4, 9:07 PM CDTSevere Thunderstorm WatchSPCAtascosa, Bandera, Bexar, Blanco, Comal, Frio and 7 more5 hr
May 4, 9:13 PM CDTMesoscale DiscussionSPCClay, Foard, Hardeman, Montague, Wichita, Wilbarger92 min
May 4, 9:17 PM CDTMesoscale DiscussionSPCCallahan, Coke, Crockett, Haskell, Irion, Jones and 8 more28 min
May 4, 9:41 PM CDTTornado WatchSPCArcher, Baylor, Clay, Foard, Hardeman, Haskell and 7 more6 hr
May 4, 11:33 PM CDTMesoscale DiscussionSPCClay, Hardeman, Montague, Wichita, Wilbarger117 min
May 5, 9:45 AM CDTMesoscale DiscussionSPCAnderson, Bell, Brazos, Burleson, Camp, Cass and 21 more2 hr
May 5, 10:13 AM CDTTornado WatchSPCAnderson, Angelina, Bastrop, Bell, Blanco, Bowie and 54 more8 hr
May 5, 12:57 PM CDTMesoscale DiscussionSPCAnderson, Angelina, Bastrop, Brazos, Burleson, Caldwell and 32 more63 min
May 5, 1:18 PM CDTMesoscale DiscussionSPCFannin, Lamar, Red River87 min
May 5, 3:08 PM CDTMesoscale DiscussionSPCAngelina, Brazos, Cherokee, Grimes, Houston, Madison and 7 more2 hr
May 5, 5:53 PM CDTMesoscale DiscussionSPCAustin, Bastrop, Blanco, Burleson, Caldwell, Fayette and 15 more97 min

Nearby

Mesoscale Discussions in Texas, 2022Every mesoscale discussion in 2022

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.