Alert archive / Texas / Mesoscale Discussions in 2005

Mesoscale Discussion 1091

May 31, 200526 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 31, 2005, 5:33 PM CDT for 26 counties in Texas. It was in force for 87 min.

The area

The outline as issued.

The facts

Issued: May 31, 2005, 5:33 PM CDT (22:33 UTC)
Expired: May 31, 2005, 7:00 PM CDT
In force: 87 min
Issued by: the Storm Prediction Center

All 26 counties

Borden County, TX, Coke County, TX, Coleman County, TX, Concho County, TX, Crockett County, TX, Dawson County, TX, Fisher County, TX, Glasscock County, TX, Howard County, TX, Irion County, TX, Jones County, TX, Llano County, TX, Martin County, TX, Mason County, TX, McCulloch County, TX, Menard County, TX, Mitchell County, TX, Nolan County, TX, Reagan County, TX, Runnels County, TX, San Saba County, TX, Schleicher County, TX, Scurry County, TX, Sterling County, TX, Taylor County, TX, Tom Green County, TX

The radar

The San Angelo radar (KSJT), 92 km from the middle of the area, began a volume at 22:33 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.

The nearest sounding before it

Midland Regional, TX (KMAF), launched 12:00Z, 10.6 hours before the alert went out and 93 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: 754 J/kg
Mixed-layer CIN: -243 J/kg
Mixed-layer LCL: 1130 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 377 m²/s²
0-3 km storm-relative helicity: 462 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

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 30, 9:15 PM CDT	Severe Thunderstorm Watch	SPC	Bailey, Castro, Cochran, Dallam, Deaf Smith, Hale and 13 more	6 hr
May 30, 11:45 PM CDT	Mesoscale Discussion	SPC	Bailey, Castro, Cochran, Dallam, Deaf Smith, Hale and 12 more	60 min
May 31, 1:32 AM CDT	Mesoscale Discussion	SPC	Armstrong, Bailey, Briscoe, Castro, Childress, Cochran and 22 more	88 min
May 31, 2:40 AM CDT	Severe Thunderstorm Watch	SPC	Bailey, Borden, Briscoe, Castro, Cochran, Crosby and 18 more	4 hr
May 31, 5:33 AM CDT	Mesoscale Discussion	SPC	Bailey, Borden, Briscoe, Castro, Cochran, Crosby and 18 more	87 min
May 31, 1:05 PM CDT	Mesoscale Discussion	SPC	Andrews, Armstrong, Bailey, Borden, Briscoe, Castro and 25 more	115 min
May 31, 1:40 PM CDT	Tornado Watch	SPC	Armstrong, Bailey, Briscoe, Carson, Castro, Childress and 26 more	8 hr
May 31, 3:50 PM CDT	Mesoscale Discussion	SPC	Armstrong, Bailey, Briscoe, Carson, Castro, Childress and 25 more	115 min
May 31, 4:30 PM CDT	Severe Thunderstorm Watch	SPC	Baylor, Clay, Foard, Hardeman, Knox, Wichita and 1 more	8 hr
May 31, 6:44 PM CDT	Mesoscale Discussion	SPC	Armstrong, Bailey, Briscoe, Carson, Castro, Childress and 24 more	2 hr
May 31, 6:46 PM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Clay, Foard, Hardeman, Knox and 3 more	89 min

Nearby

Mesoscale Discussions in Texas, 2005 Every mesoscale discussion in 2005

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.