Alert archive / Texas / Mesoscale Discussions in 2014

Mesoscale Discussion 1843

October 10, 201416 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Oct 10, 2014, 3:36 PM CDT for 16 counties in Texas. It was in force for 84 min.

The area

The outline as issued.

The facts

Issued: Oct 10, 2014, 3:36 PM CDT (20:36 UTC)
Expired: Oct 10, 2014, 5:00 PM CDT
In force: 84 min
Issued by: the Storm Prediction Center
Chance of a watch: 80%

Counties Brown County, TX, Callahan County, TX, Coke County, TX, Coleman County, TX, Concho County, TX, Irion County, TX, Jones County, TX, McCulloch County, TX, Nolan County, TX, Runnels County, TX, Schleicher County, TX, Shackelford County, TX, Sterling County, TX, Taylor County, TX, Throckmorton County, TX, Tom Green County, TX

The radar

The San Angelo radar (KSJT), 67 km from the middle of the area, began a volume at 20:36 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 526Oct 10, 5:05 PM CDT

The nearest sounding before it

Midland Regional, TX (KMAF), launched 12:00Z, 8.6 hours before the alert went out and 201 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: 1087 J/kg
Mixed-layer CIN: -166 J/kg
Mixed-layer LCL: 1197 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 123 m²/s²
0-3 km storm-relative helicity: 154 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

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
Oct 9, 7:26 PM CDT	Mesoscale Discussion	SPC	Armstrong, Carson, Collingsworth, Dallam, Deaf Smith, Donley and 14 more	94 min
Oct 9, 10:34 PM CDT	Mesoscale Discussion	SPC	Carson, Collingsworth, Gray, Hansford, Hemphill, Hutchinson and 7 more	86 min
Oct 10, 2:26 PM CDT	Mesoscale Discussion	SPC	Archer, Callahan, Clay, Collin, Cooke, Delta and 19 more	94 min
Oct 10, 3:22 PM CDT	Severe Thunderstorm Watch	SPC	Archer, Bosque, Clay, Collin, Comanche, Cooke and 25 more	7 hr
Oct 10, 5:01 PM CDT	Severe Thunderstorm Watch	SPC	Brown, Callahan, Coke, Coleman, Concho, Fisher and 15 more	7 hr

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.