Alert archive / Texas / Mesoscale Discussions in 2013

Mesoscale Discussion 786

May 23, 201335 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 23, 2013, 6:10 PM CDT for 35 counties in Texas. It was in force for 95 min.

The area

The outline as issued.

The facts

Issued: May 23, 2013, 6:10 PM CDT (23:10 UTC)
Expired: May 23, 2013, 7:45 PM CDT
In force: 95 min
Issued by: the Storm Prediction Center

All 35 counties

Armstrong County, TX, Borden County, TX, Briscoe County, TX, Callahan County, TX, Carson County, TX, Castro County, TX, Childress County, TX, Coleman County, TX, Cottle County, TX, Crosby County, TX, Dickens County, TX, Donley County, TX, Fisher County, TX, Floyd County, TX, Garza County, TX, Gray County, TX, Hale County, TX, Hall County, TX, Haskell County, TX, Jones County, TX, Kent County, TX, King County, TX, Knox County, TX, Lubbock County, TX, Lynn County, TX, Motley County, TX, Nolan County, TX, Potter County, TX, Randall County, TX, Scurry County, TX, Shackelford County, TX, Stonewall County, TX, Swisher County, TX, Taylor County, TX, Throckmorton County, TX

The radar

The Lubbock radar (KLBB), 107 km from the middle of the area, began a volume at 23:11 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 12:00Z, 11.2 hours before the alert went out and 152 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: 913 J/kg
Mixed-layer CIN: -404 J/kg
Mixed-layer LCL: 1745 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 279 m²/s²
0-3 km storm-relative helicity: 384 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

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 23, 8:52 AM CDT	Mesoscale Discussion	SPC	Collin, Cooke, Denton, Fannin, Grayson, Montague	53 min
May 23, 12:22 PM CDT	Mesoscale Discussion	SPC	Brewster, Crane, Jeff Davis, Loving, Pecos, Presidio and 4 more	2 hr
May 23, 1:04 PM CDT	Mesoscale Discussion	SPC	Armstrong, Briscoe, Carson, Childress, Cottle, Crosby and 17 more	116 min
May 23, 1:38 PM CDT	Tornado Watch	SPC	Andrews, Armstrong, Bailey, Baylor, Borden, Briscoe and 54 more	8 hr
May 23, 2:03 PM CDT	Severe Thunderstorm Watch	SPC	Brewster, Brown, Coke, Coleman, Concho, Crane and 24 more	8 hr
May 23, 3:32 PM CDT	Mesoscale Discussion	SPC	Castro, Cottle, Crosby, Dickens, Fisher, Floyd and 10 more	88 min
May 23, 3:46 PM CDT	Mesoscale Discussion	SPC	Brewster, Crane, Culberson, Ector, Jeff Davis, Loving and 8 more	59 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.