Alert archive / Texas / Mesoscale Discussions in 2014

Mesoscale Discussion 589

May 12, 201410 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 12, 2014, 6:08 PM CDT for 10 counties in Texas. It was in force for 97 min.

The area

The outline as issued.

The facts

Issued: May 12, 2014, 6:08 PM CDT (23:08 UTC)
Expired: May 12, 2014, 7:45 PM CDT
In force: 97 min
Issued by: the Storm Prediction Center
Chance of a watch: 40%

Counties Burnet County, TX, Coryell County, TX, Gillespie County, TX, Kerr County, TX, Kimble County, TX, Lampasas County, TX, Llano County, TX, Mason County, TX, Real County, TX, San Saba County, TX

The radar

The Ft Hood radar (KGRK), 111 km from the middle of the area, began a volume at 23:09 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

Fort Worth, TX (KFWD), launched 12:00Z, 11.1 hours before the alert went out and 254 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: 1938 J/kg
Mixed-layer CIN: -160 J/kg
Mixed-layer LCL: 721 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 92 m²/s²
0-3 km storm-relative helicity: 278 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
May 11, 7:51 PM CDT	Mesoscale Discussion	SPC	Baylor, Childress, Collingsworth, Cottle, Dickens, Foard and 9 more	54 min
May 11, 8:18 PM CDT	Severe Thunderstorm Watch	SPC	Briscoe, Childress, Collingsworth, Cottle, Crosby, Dickens and 17 more	6 hr
May 11, 9:56 PM CDT	Severe Thunderstorm Watch	SPC	Foard, Hardeman, Knox	6 hr
May 11, 11:41 PM CDT	Mesoscale Discussion	SPC	Briscoe, Childress, Collingsworth, Donley, Hall, Hemphill and 1 more	64 min
May 12, 11:52 AM CDT	Mesoscale Discussion	SPC	Bosque, Brown, Collin, Comanche, Cooke, Coryell and 16 more	83 min
May 12, 2:38 PM CDT	Mesoscale Discussion	SPC	Atascosa, Bandera, Bexar, Blanco, Comal, Dimmit and 17 more	97 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.