Alert archive / Texas / Mesoscale Discussions in 2014

Mesoscale Discussion 979

June 13, 201415 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 13, 2014, 1:41 AM CDT for 15 counties in Texas. It was in force for 94 min.

The area

The outline as issued.

The facts

Issued: Jun 13, 2014, 1:41 AM CDT (06:41 UTC)
Expired: Jun 13, 2014, 3:15 AM CDT
In force: 94 min
Issued by: the Storm Prediction Center

Counties Aransas County, TX, Bee County, TX, Calhoun County, TX, Duval County, TX, Goliad County, TX, Jackson County, TX, Jim Wells County, TX, La Salle County, TX, Live Oak County, TX, McMullen County, TX, Nueces County, TX, Refugio County, TX, San Patricio County, TX, Victoria County, TX, Webb County, TX

The radar

The Corpus Christi radar (KCRP), 63 km from the middle of the area, began a volume at 06:40 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 00:00Z, 6.7 hours before the alert went out and 79 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: 2342 J/kg
Mixed-layer CIN: -224 J/kg
Mixed-layer LCL: 1298 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 64 m²/s²
0-3 km storm-relative helicity: 96 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.3

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 12, 9:46 PM CDT	Mesoscale Discussion	SPC	Atascosa, Austin, Bandera, Bastrop, Bee, Bexar and 33 more	89 min
Jun 12, 11:44 PM CDT	Severe Thunderstorm Watch	SPC	Atascosa, Bee, DeWitt, Dimmit, Frio, Goliad and 10 more	3 hr
Jun 13, 1:48 PM CDT	Mesoscale Discussion	SPC	Culberson, Jeff Davis, Loving, Reeves	57 min
Jun 13, 5:09 PM CDT	Mesoscale Discussion	SPC	Atascosa, Bandera, Bee, Frio, La Salle, Live Oak and 5 more	66 min
Jun 13, 6:12 PM CDT	Mesoscale Discussion	SPC	Andrews, Armstrong, Bailey, Borden, Briscoe, Carson and 38 more	63 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.