Alert archive / Texas / Mesoscale Discussions in 2003

Mesoscale Discussion 685

May 2, 200327 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 2, 2003, 2:25 PM CDT for 27 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: May 2, 2003, 2:25 PM CDT (19:25 UTC)
Expired: May 2, 2003, 4:30 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center

All 27 counties

Bosque County, TX, Brown County, TX, Callahan County, TX, Coke County, TX, Coleman County, TX, Comanche County, TX, Concho County, TX, Crockett County, TX, Eastland County, TX, Erath County, TX, Hamilton County, TX, Hood County, TX, Irion County, TX, McCulloch County, TX, Menard County, TX, Mills County, TX, Mitchell County, TX, Nolan County, TX, Reagan County, TX, Runnels County, TX, San Saba County, TX, Schleicher County, TX, Somervell County, TX, Sterling County, TX, Sutton County, TX, Taylor County, TX, Tom Green County, TX

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, 7.4 hours before the alert went out and 211 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 3158 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 91 m²/s²
0-3 km storm-relative helicity: 123 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 1, 7:25 PM CDT	Severe Thunderstorm Watch	SPC	Bell, Blanco, Bosque, Brown, Burnet, Comanche and 29 more	5 hr
May 1, 9:00 PM CDT	Severe Thunderstorm Watch	SPC	Bowie, Cass, Morris, Titus	4 hr
May 1, 10:10 PM CDT	Mesoscale Discussion	SPC	Anderson, Bell, Blanco, Bosque, Brown, Burnet and 30 more	95 min
May 1, 11:19 PM CDT	Mesoscale Discussion	SPC	Austin, Brazoria, Brazos, Burleson, Colorado, Fort Bend and 14 more	86 min
May 1, 11:20 PM CDT	Severe Thunderstorm Watch	SPC	Austin, Brazoria, Chambers, Fort Bend, Galveston, Harris and 4 more	4 hr
May 1, 11:53 PM CDT	Mesoscale Discussion	SPC	Bowie, Cass, Morris, Titus	67 min
May 2, 2:21 PM CDT	Mesoscale Discussion	SPC	Anderson, Angelina, Cherokee, Gregg, Hardin, Harrison and 15 more	114 min
May 2, 2:45 PM CDT	Tornado Watch	SPC	Brown, Callahan, Coke, Coleman, Concho, Crockett and 20 more	6 hr
May 2, 4:28 PM CDT	Mesoscale Discussion	SPC	Anderson, Bell, Bosque, Cherokee, Coryell, Dallas and 30 more	2 hr
May 2, 4:45 PM CDT	Severe Thunderstorm Watch	SPC	Anderson, Bell, Bosque, Brown, Burnet, Cass and 32 more	5 hr
May 2, 5:57 PM CDT	Mesoscale Discussion	SPC	Brown, Callahan, Coke, Coleman, Comanche, Concho and 12 more	2 hr

Nearby

Mesoscale Discussions in Texas, 2003 Every mesoscale discussion in 2003

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.