Alert archive / Texas / Mesoscale Discussions in 2013

Mesoscale Discussion 370

April 2, 201331 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 2, 2013, 1:59 PM CDT for 31 counties in Texas. It was in force for 61 min.

The area

The outline as issued.

The facts

Issued: Apr 2, 2013, 1:59 PM CDT (18:59 UTC)
Expired: Apr 2, 2013, 3:00 PM CDT
In force: 61 min
Issued by: the Storm Prediction Center
Chance of a watch: 60%

All 31 counties

Bandera County, TX, Bastrop County, TX, Bell County, TX, Blanco County, TX, Bosque County, TX, Burleson County, TX, Burnet County, TX, Caldwell County, TX, Comal County, TX, Coryell County, TX, Falls County, TX, Gillespie County, TX, Guadalupe County, TX, Hamilton County, TX, Hays County, TX, Kendall County, TX, Kerr County, TX, Kimble County, TX, Lampasas County, TX, Lee County, TX, Limestone County, TX, Llano County, TX, Mason County, TX, McCulloch County, TX, McLennan County, TX, Milam County, TX, Mills County, TX, Robertson County, TX, San Saba County, TX, Travis County, TX, Williamson County, TX

The radar

The Ft Hood radar (KGRK), 79 km from the middle of the area, began a volume at 19:02 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.

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 7.0 hours before the alert went out and 250 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, 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
Apr 2, 6:33 PM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Callahan, Eastland, Fisher, Haskell and 12 more	117 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; radar from the NEXRAD Level II archive.