Alert archive / Texas / Mesoscale Discussions in 2003

Mesoscale Discussion 675

May 1, 200336 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 1, 2003, 10:10 PM CDT for 36 counties in Texas. It was in force for 95 min.

The area

The outline as issued.

The facts

Issued: May 1, 2003, 10:10 PM CDT (03:10 UTC)
Expired: May 1, 2003, 11:45 PM CDT
In force: 95 min
Issued by: the Storm Prediction Center

All 36 counties

Anderson County, TX, Bell County, TX, Blanco County, TX, Bosque County, TX, Brown County, TX, Burnet County, TX, Comanche County, TX, Concho County, TX, Coryell County, TX, Edwards County, TX, Erath County, TX, Falls County, TX, Freestone County, TX, Gillespie County, TX, Hamilton County, TX, Hays County, TX, Henderson County, TX, Hill County, TX, Kendall County, TX, Kerr County, TX, Kimble County, TX, Lampasas County, TX, Limestone County, TX, Llano County, TX, Mason County, TX, McCulloch County, TX, McLennan County, TX, Menard County, TX, Mills County, TX, Navarro County, TX, Real County, TX, San Saba County, TX, Somervell County, TX, Sutton County, TX, Val Verde County, TX, Williamson County, TX

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 3.2 hours before the alert went out and 219 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: 3112 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 1199 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: -24 m²/s²
0-3 km storm-relative helicity: 1 m²/s²
Significant tornado parameter: -0.3
Supercell composite: -1.4

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
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, 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, 2:25 PM CDT	Mesoscale Discussion	SPC	Bosque, Brown, Callahan, Coke, Coleman, Comanche and 21 more	2 hr
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.