Alert archive / Texas / Mesoscale Discussions in 2003

Mesoscale Discussion 1356

June 12, 200317 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 12, 2003, 1:56 PM CDT for 17 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jun 12, 2003, 1:56 PM CDT (18:56 UTC)
Expired: Jun 12, 2003, 4:00 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center

Counties Brown County, TX, Callahan County, TX, Coleman County, TX, Comanche County, TX, Concho County, TX, Eastland County, TX, Haskell County, TX, Jones County, TX, McCulloch County, TX, Palo Pinto County, TX, Runnels County, TX, Shackelford County, TX, Stephens County, TX, Taylor County, TX, Throckmorton County, TX, Tom Green County, TX, Young County, TX

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 529Jun 12, 3:30 PM CDT

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 6.9 hours before the alert went out and 237 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: 11 J/kg
Mixed-layer CIN: -462 J/kg
Mixed-layer LCL: 2219 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 265 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 11, 7:13 PM CDT	Mesoscale Discussion	SPC	Borden, Callahan, Coke, Coleman, Concho, Crockett and 29 more	62 min
Jun 11, 8:04 PM CDT	Mesoscale Discussion	SPC	Bell, Blanco, Bosque, Brown, Burnet, Caldwell and 27 more	86 min
Jun 11, 8:15 PM CDT	Tornado Watch	SPC	Archer, Baylor, Brown, Callahan, Clay, Coleman and 29 more	6 hr
Jun 11, 9:15 PM CDT	Severe Thunderstorm Watch	SPC	Bell, Bosque, Collin, Coryell, Dallas, Denton and 19 more	5 hr
Jun 11, 11:10 PM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Brown, Callahan, Clay, Coleman and 29 more	65 min
Jun 11, 11:49 PM CDT	Mesoscale Discussion	SPC	Bell, Bosque, Collin, Coryell, Dallas, Denton and 20 more	86 min
Jun 12, 12:14 AM CDT	Mesoscale Discussion	SPC	Bowie, Camp, Cass, Franklin, Marion, Morris and 3 more	2 hr
Jun 12, 12:30 AM CDT	Mesoscale Discussion	SPC	Anderson, Angelina, Austin, Brazos, Burleson, Camp and 34 more	2 hr
Jun 12, 1:10 AM CDT	Severe Thunderstorm Watch	SPC	Anderson, Angelina, Austin, Bowie, Brazoria, Brazos and 39 more	4 hr
Jun 12, 1:30 AM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Clay, Cooke, Denton, Foard and 16 more	2 hr
Jun 12, 4:20 AM CDT	Mesoscale Discussion	SPC	Angelina, Austin, Brazoria, Cass, Colorado, Fort Bend and 21 more	55 min
Jun 12, 1:31 PM CDT	Mesoscale Discussion	SPC	Brazos, Burleson, Grimes, Jasper, Montgomery, Newton and 5 more	119 min
Jun 12, 3:30 PM CDT	Severe Thunderstorm Watch	SPC	Archer, Baylor, Bosque, Brown, Callahan, Childress and 29 more	6 hr
Jun 12, 5:59 PM CDT	Mesoscale Discussion	SPC	Armstrong, Carson, Dallam, Deaf Smith, Donley, Gray and 11 more	91 min

Nearby

Mesoscale Discussions in Texas, 2003 Every mesoscale discussion in 2003

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.