Alert archive / Texas / Mesoscale Discussions in 2019

Mesoscale Discussion 764

May 23, 20196 counties in Oklahoma; 15 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 23, 2019, 11:08 PM CDT for 6 counties in Oklahoma; 15 counties in Texas. It was in force for 97 min.

The area

The outline as issued.

The facts

Issued: May 23, 2019, 11:08 PM CDT (04:08 UTC)
Expired: May 24, 2019, 12:45 AM CDT
In force: 97 min
Issued by: the Storm Prediction Center

All 21 counties

Beckham County, OK, Custer County, OK, Dewey County, OK, Greer County, OK, Harmon County, OK, Roger Mills County, OK, Briscoe County, TX, Childress County, TX, Collingsworth County, TX, Cottle County, TX, Crosby County, TX, Dickens County, TX, Donley County, TX, Floyd County, TX, Hale County, TX, Hall County, TX, Hockley County, TX, Lamb County, TX, Lubbock County, TX, Motley County, TX, Wheeler County, TX

The radar

The Amarillo radar (KAMA), 89 km from the middle of the area, began a volume at 04:08 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.

Severe Thunderstorm Watch 229May 24, 2:00 AM CDT

The nearest sounding before it

Midland Regional, TX (KMAF), launched 00:00Z, 4.1 hours before the alert went out and 304 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: 2315 J/kg
Mixed-layer CIN: -133 J/kg
Mixed-layer LCL: 1628 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 41 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 4.0

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.

Issued	Product	Office	Counties	Lasted
May 23, 8:32 PM CDT	Mesoscale Discussion	SPC	Ellis, Harper	88 min
May 23, 9:53 PM CDT	Tornado Watch	SPC	Ellis, Harper, Woods, Woodward	4 hr
May 24, 2:02 AM CDT	Severe Thunderstorm Watch	SPC	Alfalfa, Beckham, Blaine, Custer, Dewey, Ellis and 10 more	4 hr
May 24, 1:42 PM CDT	Mesoscale Discussion	SPC	Alfalfa, Garfield, Grant, Kay, Major, Woods and 1 more	2 hr
May 24, 2:18 PM CDT	Tornado Watch	SPC	Alfalfa, Beckham, Blaine, Custer, Dewey, Ellis and 19 more	8 hr
May 24, 3:51 PM CDT	Mesoscale Discussion	SPC	Beckham, Harmon	114 min
May 24, 4:43 PM CDT	Mesoscale Discussion	SPC	Caddo, Canadian, Cleveland, Comanche, Cotton, Creek and 10 more	32 min
May 24, 4:50 PM CDT	Tornado Watch	SPC	Caddo, Canadian, Cleveland, Comanche, Cotton, Garvin and 10 more	5 hr
May 24, 6:49 PM CDT	Mesoscale Discussion	SPC	Comanche, Kiowa, Tillman	56 min
May 23, 9:43 PM CDT	Severe Thunderstorm Watch	SPC	Bailey, Briscoe, Castro, Childress, Cochran, Cottle and 13 more	5 hr
May 24, 1:10 PM CDT	Mesoscale Discussion	SPC	Borden, Childress, Cottle, Crane, Crosby, Dawson and 25 more	2 hr
May 24, 1:34 PM CDT	Tornado Watch	SPC	Armstrong, Borden, Briscoe, Carson, Childress, Collingsworth and 23 more	7 hr
May 24, 3:22 PM CDT	Mesoscale Discussion	SPC	Andrews, Brewster, Coke, Crane, Crockett, Ector and 15 more	113 min

Nearby

Mesoscale Discussions in Texas, 2019 Mesoscale Discussions in Oklahoma, 2019 Every 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.