Alert archive / Texas / Mesoscale Discussions in 2019

Mesoscale Discussion 581

May 7, 2019Beaver County, Texas County, Oklahoma; 22 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 7, 2019, 9:38 PM CDT for Beaver County, Texas County, Oklahoma; 22 counties in Texas. It was in force for 67 min.

The area

The outline as issued.

The facts

Issued
May 7, 2019, 9:38 PM CDT (02:38 UTC)
Expired
May 7, 2019, 10:45 PM CDT
In force
67 min
Issued by
the Storm Prediction Center
All 24 counties

Beaver County, OK, Texas County, OK, Armstrong County, TX, Briscoe County, TX, Carson County, TX, Castro County, TX, Collingsworth County, TX, Deaf Smith County, TX, Donley County, TX, Gray County, TX, Hansford County, TX, Hartley County, TX, Hemphill County, TX, Hutchinson County, TX, Lipscomb County, TX, Moore County, TX, Ochiltree County, TX, Oldham County, TX, Potter County, TX, Randall County, TX, Roberts County, TX, Sherman County, TX, Swisher County, TX, Wheeler County, TX

The radar

The Amarillo radar (KAMA), 50 km from the middle of the area, began a volume at 02:38 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

Norman, OK (KOUN), launched 00:00Z, 2.6 hours before the alert went out and 349 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, Norman, OK at 00:00Z on 2019-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1355 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, Norman, OK at 00:00Z on 2019-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 87 square meters per square second.19395878Sfc1 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
1355 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
1174 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
87 m²/s²
0-3 km storm-relative helicity
152 m²/s²
Significant tornado parameter
0.5
Supercell composite
5.9

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 7, 8:10 PM CDTMesoscale DiscussionSPCBeckham, Blaine, Caddo, Canadian, Custer, Dewey and 7 more95 min
May 7, 8:52 PM CDTMesoscale DiscussionSPCCleveland, Creek, Garvin, Grady, Lincoln, McClain and 8 more53 min
May 7, 9:13 PM CDTTornado WatchSPCAlfalfa, Beckham, Blaine, Caddo, Canadian, Carter and 45 more8 hr
May 7, 11:49 PM CDTMesoscale DiscussionSPCCaddo, Canadian, Cleveland, Comanche, Cotton, Creek and 18 more56 min
May 8, 3:47 PM CDTMesoscale DiscussionSPCBeckham, Greer, Harmon, Jackson, Kiowa, Roger Mills and 1 more118 min
May 7, 8:25 PM CDTMesoscale DiscussionSPCArmstrong, Briscoe, Carson, Castro, Childress, Collingsworth and 21 more95 min
May 7, 10:02 PM CDTMesoscale DiscussionSPCAndrews, Bailey, Borden, Briscoe, Castro, Cochran and 43 more58 min
May 7, 10:58 PM CDTSevere Thunderstorm WatchSPCBrown, Callahan, Coke, Coleman, Concho, Crockett and 18 more8 hr
May 8, 12:56 AM CDTMesoscale DiscussionSPCBosque, Collin, Comanche, Cooke, Coryell, Dallas and 20 more64 min
May 8, 6:29 AM CDTMesoscale DiscussionSPCAnderson, Bandera, Bastrop, Bell, Blanco, Bosque and 38 more61 min
May 8, 6:54 AM CDTSevere Thunderstorm WatchSPCBandera, Bell, Blanco, Bosque, Brown, Burnet and 28 more6 hr
May 8, 10:11 AM CDTMesoscale DiscussionSPCBandera, Bell, Blanco, Bosque, Brown, Burnet and 28 more2 hr
May 8, 12:21 PM CDTMesoscale DiscussionSPCAnderson, Angelina, Austin, Bastrop, Brazos, Burleson and 30 more84 min
May 8, 12:58 PM CDTSevere Thunderstorm WatchSPCAnderson, Bastrop, Brazos, Burleson, Caldwell, Fayette and 13 more5 hr
May 8, 2:07 PM CDTMesoscale DiscussionSPCAngelina, Brazoria, Chambers, Fort Bend, Hardin, Harris and 16 more53 min
May 8, 2:16 PM CDTTornado WatchSPCAngelina, Bowie, Brazos, Burleson, Cass, Cherokee and 21 more6 hr
May 8, 3:48 PM CDTMesoscale DiscussionSPCHardin, Jasper, Newton, Orange, Sabine, San Augustine and 2 more117 min
May 8, 5:55 PM CDTMesoscale DiscussionSPCJasper, Newton95 min

Nearby

Mesoscale Discussions in Texas, 2019Mesoscale Discussions in Oklahoma, 2019Every mesoscale discussion in 2019

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.