Alert archive / Texas / Mesoscale Discussions in 2005

Mesoscale Discussion 865

May 13, 200517 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 13, 2005, 6:08 PM CDT for 17 counties in Texas. It was in force for 67 min.

The area

The outline as issued.

The facts

Issued: May 13, 2005, 6:08 PM CDT (23:08 UTC)
Expired: May 13, 2005, 7:15 PM CDT
In force: 67 min
Issued by: the Storm Prediction Center

Counties Coke County, TX, Crane County, TX, Fisher County, TX, Glasscock County, TX, Howard County, TX, Irion County, TX, Jones County, TX, Midland County, TX, Mitchell County, TX, Nolan County, TX, Reagan County, TX, Runnels County, TX, Scurry County, TX, Sterling County, TX, Taylor County, TX, Tom Green County, TX, Upton County, TX

The radar

The San Angelo radar (KSJT), 89 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 watches that followed

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

Tornado Watch 273May 13, 6:25 PM CDT

The nearest sounding before it

Midland Regional, TX (KMAF), launched 12:00Z, 11.1 hours before the alert went out and 111 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: 82 J/kg
Mixed-layer CIN: -366 J/kg
Mixed-layer LCL: 2000 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 170 m²/s²
0-3 km storm-relative helicity: 207 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 12, 7:56 PM CDT	Mesoscale Discussion	SPC	Briscoe, Castro, Childress, Collingsworth, Cottle, Crosby and 12 more	64 min
May 12, 8:40 PM CDT	Tornado Watch	SPC	Briscoe, Childress, Cottle, Crosby, Dickens, Floyd and 6 more	5 hr
May 12, 9:35 PM CDT	Mesoscale Discussion	SPC	Armstrong, Carson, Collingsworth, Donley, Gray, Hemphill and 4 more	85 min
May 12, 10:48 PM CDT	Mesoscale Discussion	SPC	Wichita	57 min
May 13, 1:12 AM CDT	Mesoscale Discussion	SPC	Childress, Cottle, Crosby, Floyd, Hale, Hall and 2 more	63 min
May 13, 1:30 AM CDT	Severe Thunderstorm Watch	SPC	Baylor, Cottle, Crosby, Dickens, Floyd, Foard and 8 more	5 hr
May 13, 1:52 PM CDT	Mesoscale Discussion	SPC	Briscoe, Childress, Collingsworth, Cottle, Dickens, Donley and 9 more	83 min
May 13, 2:10 PM CDT	Tornado Watch	SPC	Archer, Baylor, Childress, Clay, Collingsworth, Cottle and 19 more	7 hr
May 13, 2:13 PM CDT	Mesoscale Discussion	SPC	Brewster, Crockett, Irion, Terrell	2 hr
May 13, 5:56 PM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Childress, Clay, Collingsworth, Cottle and 20 more	64 min
May 13, 6:25 PM CDT	Tornado Watch	SPC	Brown, Callahan, Coke, Coleman, Concho, Eastland and 16 more	7 hr
May 13, 6:45 PM CDT	Tornado Watch	SPC	Archer, Baylor, Clay, Foard, Hardeman, King and 4 more	7 hr

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.