Alert archive / Texas / Mesoscale Discussions in 2005
Mesoscale Discussion 333
The Storm Prediction Center issued this mesoscale discussion at Mar 22, 2005, 3:43 AM CST for De Soto Parish, Sabine Parish, Louisiana; 29 counties in Texas. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 22, 2005, 3:43 AM CST (09:43 UTC)
- Expired
- Mar 22, 2005, 5:45 AM CST
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 31 counties
De Soto Parish, LA, Sabine Parish, LA, Angelina County, TX, Austin County, TX, Brazos County, TX, Chambers County, TX, Cherokee County, TX, Fort Bend County, TX, Grimes County, TX, Hardin County, TX, Harris County, TX, Houston County, TX, Jasper County, TX, Jefferson County, TX, Liberty County, TX, Madison County, TX, Montgomery County, TX, Nacogdoches County, TX, Newton County, TX, Orange County, TX, Panola County, TX, Polk County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, San Jacinto County, TX, Shelby County, TX, Trinity County, TX, Tyler County, TX, Walker County, TX, Waller County, TX
The radar
The Houston radar (KHGX), 155 km from the middle of the area, began a volume at 09:45 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 nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 9.7 hours before the alert went out and 223 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
- 1017 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 845 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 104 m²/s²
- 0-3 km storm-relative helicity
- 252 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 5.0
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, 8:29 PM CST | Mesoscale Discussion | SPC | Bienville, Bossier, Caddo, Claiborne, De Soto, Lincoln and 4 more | 91 min |
| Mar 21, 9:20 PM CST | Tornado Watch | SPC | Bienville, Caldwell, Catahoula, Claiborne, Concordia, East Carroll and 15 more | 7 hr |
| Mar 21, 11:09 PM CST | Mesoscale Discussion | SPC | Bossier, Caddo, De Soto | 96 min |
| Mar 21, 11:26 PM CST | Mesoscale Discussion | SPC | Bienville, Caldwell, Catahoula, Claiborne, Concordia, Franklin and 14 more | 94 min |
| Mar 22, 12:50 AM CST | Tornado Watch | SPC | De Soto, Sabine | 5 hr |
| Mar 22, 1:45 AM CST | Tornado Watch | SPC | Bienville, Caldwell, Catahoula, Claiborne, Concordia, East Carroll and 14 more | 6 hr |
| Mar 22, 3:00 AM CST | Tornado Watch | SPC | Acadia, Allen, Avoyelles, Beauregard, Calcasieu, Cameron and 13 more | 5 hr |
| Mar 22, 3:57 AM CST | Mesoscale Discussion | SPC | Bienville, Caldwell, Catahoula, Claiborne, Concordia, East Carroll and 14 more | 2 hr |
| Mar 22, 5:59 AM CST | Mesoscale Discussion | SPC | Acadia, Allen, Avoyelles, Calcasieu, Cameron, East Baton Rouge and 14 more | 2 hr |
| Mar 22, 6:55 AM CST | Tornado Watch | SPC | Saint Tammany, Washington | 6 hr |
Nearby
Mesoscale Discussions in Texas, 2005Mesoscale Discussions in Louisiana, 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.