Alert archive / Texas / Mesoscale Discussions in 2003
Mesoscale Discussion 2144
The Storm Prediction Center issued this mesoscale discussion at Aug 11, 2003, 2:31 PM CDT for 50 counties in Texas. It was in force for 29 min.
The area
The outline as issued.
The facts
- Issued
- Aug 11, 2003, 2:31 PM CDT (19:31 UTC)
- Expired
- Aug 11, 2003, 3:00 PM CDT
- In force
- 29 min
- Issued by
- the Storm Prediction Center
All 50 counties
Atascosa County, TX, Austin County, TX, Bandera County, TX, Bastrop County, TX, Bee County, TX, Bexar County, TX, Blanco County, TX, Brazoria County, TX, Burleson County, TX, Burnet County, TX, Caldwell County, TX, Calhoun County, TX, Colorado County, TX, Comal County, TX, DeWitt County, TX, Fayette County, TX, Fort Bend County, TX, Frio County, TX, Galveston County, TX, Gillespie County, TX, Goliad County, TX, Gonzales County, TX, Grimes County, TX, Guadalupe County, TX, Harris County, TX, Hays County, TX, Jackson County, TX, Karnes County, TX, Kendall County, TX, Kerr County, TX, Lavaca County, TX, Lee County, TX, Liberty County, TX, Live Oak County, TX, Llano County, TX, Mason County, TX, Matagorda County, TX, McMullen County, TX, Medina County, TX, Montgomery County, TX, Refugio County, TX, Travis County, TX, Uvalde County, TX, Victoria County, TX, Waller County, TX, Washington County, TX, Wharton County, TX, Williamson County, TX, Wilson County, TX, Zavala County, TX
The radar
The Austin/San Antonio radar (KEWX), 102 km from the middle of the area, began a volume at 19:34 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
Corpus Christi, TX (KCRP), launched 12:00Z, 7.5 hours before the alert went out and 178 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.
- Mixed-layer CAPE
- 1123 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 798 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 11:31 AM CDT | Mesoscale Discussion | SPC | Austin, Bastrop, Brazoria, Brazos, Burleson, Caldwell and 27 more | 89 min |
| Aug 11, 12:05 PM CDT | Severe Thunderstorm Watch | SPC | Austin, Brazoria, Colorado, Fort Bend, Galveston, Harris and 8 more | 6 hr |
| Aug 11, 2:06 PM CDT | Mesoscale Discussion | SPC | Bowie, Camp, Cass, Collin, Cooke, Dallas and 31 more | 54 min |
| Aug 11, 2:35 PM CDT | Severe Thunderstorm Watch | SPC | Atascosa, Bandera, Bastrop, Bee, Bexar, Blanco and 21 more | 5 hr |
| Aug 11, 4:45 PM CDT | Severe Thunderstorm Watch | SPC | Bosque, Clay, Collin, Comanche, Cooke, Dallas and 17 more | 5 hr |
| Aug 11, 5:16 PM CDT | Mesoscale Discussion | SPC | Anderson, Angelina, Austin, Brazoria, Brazos, Chambers and 21 more | 59 min |
| Aug 11, 5:29 PM CDT | Mesoscale Discussion | SPC | Collin, Dallas, Ellis, Grayson, Navarro, Rockwall | 2 hr |
| Aug 11, 6:09 PM CDT | Mesoscale Discussion | SPC | Aransas, Atascosa, Bandera, Bastrop, Bee, Bexar and 42 more | 96 min |
Nearby
Mesoscale Discussions in Texas, 2003Every 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; radar from the NEXRAD Level II archive.