Alert archive / Texas / Mesoscale Discussions in 2014

Mesoscale Discussion 1127

June 23, 201411 counties in Oklahoma; 29 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 23, 2014, 2:23 AM CDT for 11 counties in Oklahoma; 29 counties in Texas. It was in force for 97 min.

The area

The outline as issued.

The facts

Issued: Jun 23, 2014, 2:23 AM CDT (07:23 UTC)
Expired: Jun 23, 2014, 4:00 AM CDT
In force: 97 min
Issued by: the Storm Prediction Center

All 40 counties

Caddo County, OK, Canadian County, OK, Comanche County, OK, Cotton County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Kingfisher County, OK, Kiowa County, OK, Tillman County, OK, Washita County, OK, Archer County, TX, Baylor County, TX, Briscoe County, TX, Childress County, TX, Clay County, TX, Cochran County, TX, Cottle County, TX, Crosby County, TX, Dickens County, TX, Floyd County, TX, Foard County, TX, Garza County, TX, Hale County, TX, Hall County, TX, Hardeman County, TX, Haskell County, TX, Hockley County, TX, Kent County, TX, King County, TX, Knox County, TX, Lubbock County, TX, Lynn County, TX, Motley County, TX, Stonewall County, TX, Terry County, TX, Throckmorton County, TX, Wichita County, TX, Wilbarger County, TX, Yoakum County, TX

The radar

The Altus AFB radar (KFDR), 82 km from the middle of the area, began a volume at 07:27 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

Amarillo Airport, TX (KAMA), launched 00:00Z, 7.4 hours before the alert went out and 186 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: 2676 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 1781 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 266 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 16.5

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 22, 8:19 PM CDT	Mesoscale Discussion	SPC	Alfalfa, Beaver, Beckham, Blaine, Custer, Dewey and 13 more	86 min
Jun 22, 9:47 PM CDT	Severe Thunderstorm Watch	SPC	Alfalfa, Beaver, Beckham, Blaine, Caddo, Canadian and 19 more	7 hr
Jun 22, 11:19 PM CDT	Mesoscale Discussion	SPC	Alfalfa, Beaver, Beckham, Blaine, Custer, Dewey and 13 more	86 min
Jun 22, 11:47 PM CDT	Severe Thunderstorm Watch	SPC	Comanche, Cotton, Jackson, Tillman	7 hr
Jun 23, 5:17 PM CDT	Mesoscale Discussion	SPC	Cimarron	118 min
Jun 23, 6:14 AM CDT	Mesoscale Discussion	SPC	Collin, Cooke, Dallas, Denton, Eastland, Fisher and 14 more	61 min
Jun 23, 2:53 PM CDT	Mesoscale Discussion	SPC	Brewster, Culberson, Jeff Davis, Loving, Pecos, Presidio and 3 more	2 hr

Nearby

Mesoscale Discussions in Texas, 2014 Mesoscale Discussions in Oklahoma, 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.