Alert archive / Texas / Mesoscale Discussions in 2005
Mesoscale Discussion 324
The Storm Prediction Center issued this mesoscale discussion at Mar 21, 2005, 2:59 PM CST for 24 counties in Texas. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 21, 2005, 2:59 PM CST (20:59 UTC)
- Expired
- Mar 21, 2005, 5:30 PM CST
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
All 24 counties
Anderson County, TX, Camp County, TX, Cherokee County, TX, Delta County, TX, Falls County, TX, Fannin County, TX, Franklin County, TX, Freestone County, TX, Henderson County, TX, Hopkins County, TX, Houston County, TX, Hunt County, TX, Kaufman County, TX, Lamar County, TX, Leon County, TX, Limestone County, TX, Milam County, TX, Navarro County, TX, Rains County, TX, Robertson County, TX, Rockwall County, TX, Smith County, TX, Van Zandt County, TX, Wood County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 109 km from the middle of the area, began a volume at 21:01 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
Shreveport, LA (KSHV), launched 12:00Z, 9.0 hours before the alert went out and 234 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 481 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 99 m²/s²
- 0-3 km storm-relative helicity
- 204 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 |
|---|---|---|---|---|
| Mar 21, 3:39 AM CST | Mesoscale Discussion | SPC | Bosque, Clay, Collin, Comanche, Cooke, Dallas and 26 more | 3 hr |
| Mar 21, 6:05 AM CST | Severe Thunderstorm Watch | SPC | Bastrop, Bell, Blanco, Bosque, Brown, Burnet and 59 more | 6 hr |
| Mar 21, 7:43 AM CST | Mesoscale Discussion | SPC | Bastrop, Bell, Blanco, Bosque, Brown, Burleson and 60 more | 92 min |
| Mar 21, 9:26 AM CST | Mesoscale Discussion | SPC | Anderson, Bastrop, Bell, Blanco, Bosque, Burleson and 57 more | 34 min |
| Mar 21, 10:57 AM CST | Mesoscale Discussion | SPC | Atascosa, Austin, Bastrop, Bexar, Brazoria, Caldwell and 27 more | 33 min |
| Mar 21, 5:10 PM CST | Mesoscale Discussion | SPC | Anderson, Angelina, Austin, Bowie, Brazoria, Brazos and 55 more | 95 min |
| Mar 21, 5:40 PM CST | Tornado Watch | SPC | Anderson, Angelina, Austin, Bowie, Brazos, Camp and 40 more | 7 hr |
Nearby
Mesoscale Discussions in Texas, 2005Every mesoscale discussion in 2005
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.