Alert archive / Texas / Mesoscale Discussions in 2020

Mesoscale Discussion 714

May 24, 20205 counties in Oklahoma; 29 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 24, 2020, 6:39 PM CDT for 5 counties in Oklahoma; 29 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 24, 2020, 6:39 PM CDT (23:39 UTC)
Expired
May 24, 2020, 8:45 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
Concerning
Severe thunderstorm watch 219
All 34 counties

Beaver County, OK, Beckham County, OK, Ellis County, OK, Harper County, OK, Roger Mills County, OK, Armstrong County, TX, Briscoe County, TX, Carson County, TX, Childress County, TX, Collingsworth County, TX, Cottle County, TX, Crosby County, TX, Dickens County, TX, Donley County, TX, Floyd County, TX, Garza County, TX, Gray County, TX, Hale County, TX, Hall County, TX, Hemphill County, TX, Hockley County, TX, Kent County, TX, King County, TX, Lamb County, TX, Lipscomb County, TX, Lubbock County, TX, Lynn County, TX, Motley County, TX, Ochiltree County, TX, Roberts County, TX, Stonewall County, TX, Swisher County, TX, Terry County, TX, Wheeler County, TX

The radar

The Amarillo radar (KAMA), 117 km from the middle of the area, began a volume at 23:40 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

Amarillo Airport, TX (KAMA), launched 12:00Z, 11.7 hours before the alert went out and 116 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, Amarillo Airport, TX at 12:00Z on 2020-05-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 222 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, Amarillo Airport, TX at 12:00Z on 2020-05-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 371 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
222 J/kg
Mixed-layer CIN
-398 J/kg
Mixed-layer LCL
1587 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
371 m²/s²
0-3 km storm-relative helicity
468 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.7

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 DiscussionSPCBeckham, Blaine, Caddo, Canadian, Comanche, Cotton and 14 more117 min
May 23, 9:33 PM CDTSevere Thunderstorm WatchSPCCaddo, Canadian, Carter, Cleveland, Comanche, Cotton and 13 more4 hr
May 23, 11:36 PM CDTMesoscale DiscussionSPCCaddo, Canadian, Comanche, Cotton, Grady, Jefferson and 2 more114 min
May 24, 2:28 PM CDTMesoscale DiscussionSPCCimarron2 hr
May 24, 2:58 PM CDTMesoscale DiscussionSPCAdair, LeFlore, Sequoyah2 hr
May 24, 3:07 PM CDTMesoscale DiscussionSPCBeaver83 min
May 24, 3:26 PM CDTSevere Thunderstorm WatchSPCBeaver, Beckham, Ellis, Harper, Roger Mills7 hr
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, 3:48 PM CDTMesoscale DiscussionSPCBorden, Coke, Crane, Crockett, Dawson, Fisher and 20 more87 min
May 24, 5:28 PM CDTMesoscale DiscussionSPCAtascosa, Bandera, Bexar, Dimmit, Duval, Edwards and 20 more2 hr
May 24, 5:56 PM CDTSevere Thunderstorm WatchSPCAtascosa, Bandera, Bexar, Brooks, Dimmit, Duval and 17 more6 hr
May 24, 6:58 PM CDTMesoscale DiscussionSPCBrown, Callahan, Coleman, Comanche, Concho, Eastland and 15 more2 hr

Nearby

Mesoscale Discussions in Texas, 2020Mesoscale Discussions in Oklahoma, 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.