Alert archive / Texas / Mesoscale Discussions in 2014

Mesoscale Discussion 707

May 26, 201426 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 26, 2014, 10:09 AM CDT for 26 counties in Texas. It was in force for 66 min.

The area

The outline as issued.

The facts

Issued: May 26, 2014, 10:09 AM CDT (15:09 UTC)
Expired: May 26, 2014, 11:15 AM CDT
In force: 66 min
Issued by: the Storm Prediction Center
Chance of a watch: 60%

All 26 counties

Atascosa County, TX, Bastrop County, TX, Bee County, TX, Bexar County, TX, Blanco County, TX, Caldwell County, TX, Colorado County, TX, Comal County, TX, DeWitt County, TX, Fayette County, TX, Goliad County, TX, Gonzales County, TX, Guadalupe County, TX, Hays County, TX, Jackson County, TX, Karnes County, TX, Kendall County, TX, Lavaca County, TX, Lee County, TX, Matagorda County, TX, Medina County, TX, Refugio County, TX, Travis County, TX, Victoria County, TX, Wharton County, TX, Wilson County, TX

The radar

The Austin/San Antonio radar (KEWX), 60 km from the middle of the area, began a volume at 15:08 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

Corpus Christi, TX (KCRP), launched 12:00Z, 3.2 hours before the alert went out and 173 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: 1630 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 491 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 127 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 4.7

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
May 25, 7:13 PM CDT	Mesoscale Discussion	SPC	Andrews, Armstrong, Bailey, Carson, Castro, Cochran and 18 more	92 min
May 25, 9:54 PM CDT	Mesoscale Discussion	SPC	Andrews, Bailey, Cochran, Gaines, Hale, Hockley and 3 more	66 min
May 26, 4:07 AM CDT	Mesoscale Discussion	SPC	Atascosa, Bee, DeWitt, Goliad, Karnes, Victoria	113 min
May 26, 2:44 PM CDT	Mesoscale Discussion	SPC	Andrews, Borden, Coke, Crockett, Crosby, Dawson and 22 more	61 min
May 26, 3:03 PM CDT	Tornado Watch	SPC	Andrews, Borden, Coke, Coleman, Concho, Cottle and 44 more	8 hr
May 26, 3:29 PM CDT	Mesoscale Discussion	SPC	Aransas, Brazoria, Calhoun, Chambers, Fort Bend, Galveston and 8 more	61 min
May 26, 3:50 PM CDT	Tornado Watch	SPC	Aransas, Bee, Brazoria, Calhoun, Chambers, Fort Bend and 11 more	4 hr
May 26, 5:31 PM CDT	Mesoscale Discussion	SPC	Brazoria, Chambers, Liberty, Nueces	59 min
May 26, 6:02 PM CDT	Mesoscale Discussion	SPC	Borden, Coke, Crockett, Crosby, Dawson, Dickens and 23 more	88 min
May 26, 6:18 PM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Wichita, Wilbarger	87 min

Nearby

Mesoscale Discussions in Texas, 2014 Every mesoscale discussion in 2014

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.