Alert archive / Texas / Mesoscale Discussions in 2019

Mesoscale Discussion 262

April 6, 2019Cotton County, Jefferson County, Love County, Oklahoma; 17 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 6, 2019, 7:58 AM CDT for Cotton County, Jefferson County, Love County, Oklahoma; 17 counties in Texas. It was in force for 92 min.

The area

The outline as issued.

The facts

Issued: Apr 6, 2019, 7:58 AM CDT (12:58 UTC)
Expired: Apr 6, 2019, 9:30 AM CDT
In force: 92 min
Issued by: the Storm Prediction Center
Chance of a watch: 20%

Counties Cotton County, OK, Jefferson County, OK, Love County, OK, Archer County, TX, Brown County, TX, Clay County, TX, Coleman County, TX, Comanche County, TX, Cooke County, TX, Eastland County, TX, Erath County, TX, Hood County, TX, Jack County, TX, Montague County, TX, Palo Pinto County, TX, Parker County, TX, Stephens County, TX, Wichita County, TX, Wise County, TX, Young County, TX

The radar

The Dyess AFB radar (KDYX), 85 km from the middle of the area, began a volume at 13:00 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

Fort Worth, TX (KFWD), launched 12:00Z, 1.0 hours before the alert went out and 113 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: 1268 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 544 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 83 m²/s²
0-3 km storm-relative helicity: 36 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.6

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
Apr 6, 1:30 PM CDT	Mesoscale Discussion	SPC	Alfalfa, Blaine, Caddo, Canadian, Cleveland, Comanche and 22 more	3 hr
Apr 5, 7:10 PM CDT	Mesoscale Discussion	SPC	Andrews, Armstrong, Borden, Briscoe, Castro, Cochran and 42 more	2 hr
Apr 6, 1:41 AM CDT	Mesoscale Discussion	SPC	Andrews, Borden, Childress, Coke, Cottle, Crane and 25 more	94 min
Apr 6, 9:08 AM CDT	Mesoscale Discussion	SPC	Anderson, Angelina, Austin, Bandera, Bastrop, Bell and 46 more	3 hr
Apr 6, 10:35 AM CDT	Tornado Watch	SPC	Anderson, Angelina, Bastrop, Bell, Blanco, Brazos and 47 more	7 hr
Apr 6, 1:09 PM CDT	Mesoscale Discussion	SPC	Anderson, Angelina, Bastrop, Bell, Blanco, Bosque and 44 more	96 min
Apr 6, 3:03 PM CDT	Mesoscale Discussion	SPC	Anderson, Angelina, Bastrop, Bell, Blanco, Bosque and 44 more	87 min
Apr 6, 4:48 PM CDT	Mesoscale Discussion	SPC	Angelina, Brazos, Burleson, Cherokee, Grimes, Houston and 17 more	117 min
Apr 6, 5:54 PM CDT	Tornado Watch	SPC	Angelina, Brazos, Burleson, Cherokee, Grimes, Houston and 12 more	4 hr

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.