Alert archive / Texas / Mesoscale Discussions in 2004
Mesoscale Discussion 2443
The Storm Prediction Center issued this mesoscale discussion at Nov 23, 2004, 6:23 PM CST for 29 counties in Texas. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Nov 23, 2004, 6:23 PM CST (00:23 UTC)
- Expired
- Nov 23, 2004, 8:30 PM CST
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 29 counties
Anderson County, TX, Angelina County, TX, Bastrop County, TX, Bell County, TX, Brazos County, TX, Burleson County, TX, Cherokee County, TX, Falls County, TX, Freestone County, TX, Gregg County, TX, Grimes County, TX, Henderson County, TX, Houston County, TX, Lee County, TX, Leon County, TX, Madison County, TX, Milam County, TX, Montgomery County, TX, Nacogdoches County, TX, Polk County, TX, Robertson County, TX, Rusk County, TX, San Jacinto County, TX, Smith County, TX, Travis County, TX, Trinity 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 00:00Z, 0.4 hours before the alert went out and 231 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
- 489 J/kg
- Mixed-layer CIN
- -34 J/kg
- Mixed-layer LCL
- 755 m above ground
- 0-6 km bulk shear
- 76 kt
- 0-1 km storm-relative helicity
- -113 m²/s²
- 0-3 km storm-relative helicity
- -140 m²/s²
- Significant tornado parameter
- -0.4
- Supercell composite
- -1.8
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 |
|---|---|---|---|---|
| Nov 23, 7:17 PM CST | Mesoscale Discussion | SPC | Angelina, Austin, Brazoria, Calhoun, Chambers, Cherokee and 35 more | 58 min |
| Nov 23, 7:31 PM CST | Mesoscale Discussion | SPC | Carson, Hansford, Hutchinson, Lipscomb, Moore, Ochiltree and 3 more | 5 hr |
| Nov 23, 7:50 PM CST | Tornado Watch | SPC | Angelina, Austin, Bee, Brazoria, Brazos, Burleson and 34 more | 6 hr |
| Nov 23, 10:01 PM CST | Mesoscale Discussion | SPC | Chambers, Galveston, Jasper, Jefferson, Newton, Orange and 1 more | 119 min |
| Nov 23, 11:00 PM CST | Severe Thunderstorm Watch | SPC | Orange | 7 hr |
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.