Alert archive / Texas / Mesoscale Discussions in 2012

Mesoscale Discussion 2042

October 12, 2012Lea County, Roosevelt County, New Mexico; 15 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Oct 12, 2012, 10:34 PM MDT for Lea County, Roosevelt County, New Mexico; 15 counties in Texas. It was in force for 86 min.

The area

The outline as issued.

The facts

Issued: Oct 12, 2012, 10:34 PM MDT (04:34 UTC)
Expired: Oct 13, 2012, 12:00 AM MDT
In force: 86 min
Issued by: the Storm Prediction Center

Counties Lea County, NM, Roosevelt County, NM, Andrews County, TX, Bailey County, TX, Cochran County, TX, Crosby County, TX, Dawson County, TX, Floyd County, TX, Gaines County, TX, Garza County, TX, Hale County, TX, Hockley County, TX, Lamb County, TX, Lubbock County, TX, Lynn County, TX, Terry County, TX, Yoakum County, TX

The radar

The Lubbock radar (KLBB), 106 km from the middle of the area, began a volume at 04:36 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 nearest sounding before it

Midland Regional, TX (KMAF), launched 00:00Z, 4.6 hours before the alert went out and 147 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: 1378 J/kg
Mixed-layer CIN: -148 J/kg
Mixed-layer LCL: 1156 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 38 m²/s²
0-3 km storm-relative helicity: 70 m²/s²
Significant tornado parameter: 0.1
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
Oct 12, 8:19 PM MDT	Mesoscale Discussion	SPC	Curry, Harding, Lea, Quay, Roosevelt, Union	56 min
Oct 12, 10:52 PM MDT	Mesoscale Discussion	SPC	Quay	83 min
Oct 12, 9:11 PM MDT	Mesoscale Discussion	SPC	Dallam, Hansford, Ochiltree, Sherman	94 min
Oct 13, 1:06 AM MDT	Mesoscale Discussion	SPC	Carson, Gray, Hansford, Hemphill, Hutchinson, Lipscomb and 7 more	84 min
Oct 13, 11:23 AM MDT	Mesoscale Discussion	SPC	Baylor, Coke, Fisher, Foard, Hardeman, Haskell and 13 more	3 hr
Oct 13, 12:00 PM MDT	Tornado Watch	SPC	Archer, Baylor, Callahan, Clay, Cooke, Eastland and 20 more	8 hr
Oct 13, 12:10 PM MDT	Mesoscale Discussion	SPC	Coke, Concho, Crockett, Irion, Menard, Reagan and 7 more	95 min
Oct 13, 12:37 PM MDT	Severe Thunderstorm Watch	SPC	Brown, Coke, Coleman, Concho, Crockett, Edwards and 19 more	9 hr
Oct 13, 1:55 PM MDT	Mesoscale Discussion	SPC	Archer, Baylor, Clay, Cooke, Haskell, Jack and 8 more	95 min
Oct 13, 2:42 PM MDT	Mesoscale Discussion	SPC	Coke, Crockett, Irion, Kinney, Maverick, Reagan and 6 more	93 min
Oct 13, 5:30 PM MDT	Mesoscale Discussion	SPC	Angelina, Austin, Bastrop, Bexar, Brazos, Burleson and 27 more	60 min
Oct 13, 5:59 PM MDT	Mesoscale Discussion	SPC	Archer, Callahan, Clay, Collin, Cooke, Dallas and 25 more	2 hr

Nearby

Mesoscale Discussions in Texas, 2012 Mesoscale Discussions in New Mexico, 2012 Every mesoscale discussion in 2012

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.