Alert archive / Texas / Mesoscale Discussions in 2015

Mesoscale Discussion 1005

June 13, 2015Jefferson County, Oklahoma; 7 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 13, 2015, 3:15 PM CDT for Jefferson County, Oklahoma; 7 counties in Texas. It was in force for 90 min.

The area

The outline as issued.

The facts

Issued: Jun 13, 2015, 3:15 PM CDT (20:15 UTC)
Expired: Jun 13, 2015, 4:45 PM CDT
In force: 90 min
Issued by: the Storm Prediction Center
Chance of a watch: 40%

Counties Jefferson County, OK, Baylor County, TX, Clay County, TX, Jack County, TX, Knox County, TX, Montague County, TX, Throckmorton County, TX, Young County, TX

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 8.3 hours before the alert went out and 316 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: 411 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 638 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 60 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
Jun 12, 8:55 PM CDT	Mesoscale Discussion	SPC	Blaine, Caddo, Canadian, Comanche, Custer, Garfield and 12 more	65 min
Jun 12, 8:01 PM CDT	Mesoscale Discussion	SPC	Andrews, Armstrong, Borden, Briscoe, Castro, Cochran and 30 more	89 min
Jun 13, 7:54 AM CDT	Mesoscale Discussion	SPC	Bailey, Castro, Cochran, Deaf Smith, Hale, Hockley and 4 more	2 hr
Jun 13, 1:22 PM CDT	Mesoscale Discussion	SPC	Andrews, Bailey, Cochran, Crane, Ector, Gaines and 10 more	2 hr
Jun 13, 2:03 PM CDT	Severe Thunderstorm Watch	SPC	Andrews, Armstrong, Bailey, Borden, Brewster, Briscoe and 41 more	8 hr
Jun 13, 3:49 PM CDT	Mesoscale Discussion	SPC	Andrews, Bailey, Borden, Briscoe, Castro, Cochran and 32 more	56 min
Jun 13, 5:56 PM CDT	Mesoscale Discussion	SPC	Andrews, Armstrong, Bailey, Castro, Cochran, Crane and 25 more	94 min

Nearby

Mesoscale Discussions in Texas, 2015 Mesoscale Discussions in Oklahoma, 2015 Every mesoscale discussion in 2015

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.