Alert archive / Texas / Mesoscale Discussions in 2004
Mesoscale Discussion 2059
The Storm Prediction Center issued this mesoscale discussion at Aug 20, 2004, 3:02 PM CDT for 35 counties in Texas. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 20, 2004, 3:02 PM CDT (20:02 UTC)
- Expired
- Aug 20, 2004, 5:30 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 35 counties
Bastrop County, TX, Bell County, TX, Blanco County, TX, Brazos County, TX, Burleson County, TX, Burnet County, TX, Caldwell County, TX, Comal County, TX, Concho County, TX, Gillespie County, TX, Grimes County, TX, Hays County, TX, Houston County, TX, Irion County, TX, Kendall County, TX, Kerr County, TX, Kimble County, TX, Lee County, TX, Leon County, TX, Llano County, TX, Madison County, TX, Mason County, TX, McCulloch County, TX, Menard County, TX, Milam County, TX, Reagan County, TX, Robertson County, TX, San Saba County, TX, Schleicher County, TX, Sutton County, TX, Tom Green County, TX, Travis County, TX, Walker County, TX, Washington County, TX, Williamson 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
Fort Worth, TX (KFWD), launched 12:00Z, 8.0 hours before the alert went out and 247 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
- 950 J/kg
- Mixed-layer CIN
- -91 J/kg
- Mixed-layer LCL
- 705 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -83 m²/s²
- 0-3 km storm-relative helicity
- 35 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 20, 1:27 AM CDT | Mesoscale Discussion | SPC | Borden, Cottle, Crosby, Dawson, Dickens, Fisher and 16 more | 93 min |
| Aug 20, 3:40 PM CDT | Severe Thunderstorm Watch | SPC | Bandera, Concho, Crane, Crockett, Ector, Edwards and 20 more | 6 hr |
| Aug 20, 6:25 PM CDT | Mesoscale Discussion | SPC | Bandera, Concho, Crane, Crockett, Ector, Edwards and 19 more | 95 min |
Nearby
Mesoscale Discussions in Texas, 2004Every mesoscale discussion in 2004
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.