Alert archive / Texas / Mesoscale Discussions in 2019

Mesoscale Discussion 187

March 13, 201924 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Mar 13, 2019, 12:42 AM CDT for 24 counties in Texas. It was in force for 93 min.

The area

The outline as issued.

The facts

Issued: Mar 13, 2019, 12:42 AM CDT (05:42 UTC)
Expired: Mar 13, 2019, 2:15 AM CDT
In force: 93 min
Issued by: the Storm Prediction Center

All 24 counties

Callahan County, TX, Coke County, TX, Coleman County, TX, Concho County, TX, Crockett County, TX, Edwards County, TX, Fisher County, TX, Irion County, TX, Jones County, TX, Kimble County, TX, McCulloch County, TX, Menard County, TX, Mitchell County, TX, Nolan County, TX, Reagan County, TX, Runnels County, TX, Schleicher County, TX, Scurry County, TX, Shackelford County, TX, Sterling County, TX, Sutton County, TX, Taylor County, TX, Tom Green County, TX, Val Verde County, TX

The radar

The San Angelo radar (KSJT), 40 km from the middle of the area, began a volume at 05:47 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

Midland Regional, TX (KMAF), launched 00:00Z, 5.7 hours before the alert went out and 152 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: 593 J/kg
Mixed-layer CIN: -112 J/kg
Mixed-layer LCL: 844 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 337 m²/s²
0-3 km storm-relative helicity: 461 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 6.4

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
Mar 12, 7:25 PM CDT	Mesoscale Discussion	SPC	Andrews, Bailey, Borden, Briscoe, Castro, Childress and 29 more	2 hr
Mar 12, 8:28 PM CDT	Mesoscale Discussion	SPC	Andrews, Ector, Gaines, Reeves, Terry, Ward and 2 more	2 hr
Mar 12, 9:43 PM CDT	Severe Thunderstorm Watch	SPC	Briscoe, Childress, Cottle, Crosby, Dickens, Floyd and 10 more	5 hr
Mar 12, 10:01 PM CDT	Tornado Watch	SPC	Borden, Brown, Callahan, Coke, Coleman, Concho and 36 more	7 hr
Mar 12, 10:19 PM CDT	Mesoscale Discussion	SPC	Borden, Coke, Crane, Crockett, Dawson, Glasscock and 12 more	116 min
Mar 13, 12:31 AM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Childress, Clay, Cottle, Foard and 8 more	59 min
Mar 13, 12:47 AM CDT	Severe Thunderstorm Watch	SPC	Archer, Baylor, Clay, Foard, Hardeman, Knox and 2 more	5 hr
Mar 13, 1:37 AM CDT	Mesoscale Discussion	SPC	Bell, Bosque, Brown, Burnet, Callahan, Coleman and 22 more	83 min
Mar 13, 1:51 AM CDT	Severe Thunderstorm Watch	SPC	Bell, Bosque, Collin, Comanche, Cooke, Coryell and 36 more	5 hr
Mar 13, 3:03 AM CDT	Mesoscale Discussion	SPC	Comanche, Erath, Hood, Jack, Palo Pinto, Parker	57 min
Mar 13, 4:19 AM CDT	Mesoscale Discussion	SPC	Bell, Bosque, Burnet, Collin, Cooke, Coryell and 11 more	86 min
Mar 13, 5:59 AM CDT	Mesoscale Discussion	SPC	Bowie, Camp, Cass, Franklin, Gregg, Harrison and 10 more	91 min

Nearby

Mesoscale Discussions in Texas, 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.