Alert archive / Texas / Mesoscale Discussions in 2013

Mesoscale Discussion 374

April 2, 201318 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 2, 2013, 6:33 PM CDT for 18 counties in Texas. It was in force for 117 min.

The area

The outline as issued.

The facts

Issued: Apr 2, 2013, 6:33 PM CDT (23:33 UTC)
Expired: Apr 2, 2013, 8:30 PM CDT
In force: 117 min
Issued by: the Storm Prediction Center
Chance of a watch: 5%

Counties Archer County, TX, Baylor County, TX, Callahan County, TX, Eastland County, TX, Fisher County, TX, Haskell County, TX, Jack County, TX, Jones County, TX, Knox County, TX, Nolan County, TX, Palo Pinto County, TX, Parker County, TX, Shackelford County, TX, Stephens County, TX, Stonewall County, TX, Taylor County, TX, Throckmorton County, TX, Young County, TX

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 11.6 hours before the alert went out and 191 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: 121 J/kg
Mixed-layer CIN: -208 J/kg
Mixed-layer LCL: 1189 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: -45 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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
Apr 1, 7:39 PM CDT	Mesoscale Discussion	SPC	Baylor, Callahan, Haskell, Jones, King, Knox and 5 more	66 min
Apr 1, 11:52 PM CDT	Mesoscale Discussion	SPC	Bell, Bosque, Brown, Callahan, Coke, Coleman and 27 more	53 min
Apr 2, 3:20 AM CDT	Mesoscale Discussion	SPC	Bell, Bosque, Burleson, Coryell, Falls, Hamilton and 6 more	115 min
Apr 2, 1:42 PM CDT	Mesoscale Discussion	SPC	Brewster, Concho, Crockett, Edwards, Irion, Jeff Davis and 11 more	93 min
Apr 2, 1:59 PM CDT	Mesoscale Discussion	SPC	Bandera, Bastrop, Bell, Blanco, Bosque, Burleson and 25 more	61 min
Apr 2, 2:35 PM CDT	Severe Thunderstorm Watch	SPC	Atascosa, Bandera, Bastrop, Bell, Bexar, Blanco and 56 more	8 hr
Apr 2, 3:38 PM CDT	Mesoscale Discussion	SPC	Austin, Brazoria, Brazos, Burleson, Colorado, Fort Bend and 7 more	67 min
Apr 2, 3:54 PM CDT	Severe Thunderstorm Watch	SPC	Austin, Brazoria, Brazos, Burleson, Chambers, Colorado and 14 more	7 hr
Apr 2, 5:03 PM CDT	Mesoscale Discussion	SPC	Bandera, Bastrop, Bell, Bexar, Blanco, Brewster and 41 more	87 min
Apr 2, 5:41 PM CDT	Mesoscale Discussion	SPC	Austin, Brazoria, Burleson, Colorado, Fayette, Fort Bend and 9 more	94 min

Nearby

Mesoscale Discussions in Texas, 2013 Every mesoscale discussion in 2013

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.