Alert archive / Texas / Mesoscale Discussions in 2004
Mesoscale Discussion 2394
The Storm Prediction Center issued this mesoscale discussion at Nov 1, 2004, 9:37 PM CST for Calcasieu Parish, Cameron Parish, Louisiana; 23 counties in Texas. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Nov 1, 2004, 9:37 PM CST (03:37 UTC)
- Expired
- Nov 2, 2004, 12:30 AM CST
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
All 25 counties
Calcasieu Parish, LA, Cameron Parish, LA, Aransas County, TX, Bee County, TX, Brazoria County, TX, Calhoun County, TX, Chambers County, TX, Colorado County, TX, Fort Bend County, TX, Galveston County, TX, Goliad County, TX, Hardin County, TX, Harris County, TX, Jackson County, TX, Jefferson County, TX, Jim Hogg County, TX, Jim Wells County, TX, Liberty County, TX, Matagorda County, TX, Nueces County, TX, Orange County, TX, Refugio County, TX, San Patricio County, TX, Victoria County, TX, Wharton County, TX
The radar
The Houston radar (KHGX), 28 km from the middle of the area, began a volume at 03:38 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, 3.6 hours before the alert went out and 191 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
- 1262 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 746 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 172 m²/s²
- 0-3 km storm-relative helicity
- 187 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 5.8
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 1, 6:34 PM CST | Mesoscale Discussion | SPC | Acadia, Allen, Avoyelles, Caldwell, Cameron, Catahoula and 16 more | 116 min |
| Nov 2, 3:30 AM CST | Mesoscale Discussion | SPC | Acadia, East Baton Rouge, East Feliciana, Iberville, Lafayette, Pointe Coupee and 4 more | 2 hr |
| Nov 2, 9:52 AM CST | Mesoscale Discussion | SPC | Ascension, Assumption, Iberia, Iberville, Jefferson, Lafourche and 12 more | 113 min |
| Nov 1, 6:54 PM CST | Mesoscale Discussion | SPC | Bosque, Burnet, Clay, Comanche, Cooke, Coryell and 20 more | 3 hr |
| Nov 2, 3:12 AM CST | Mesoscale Discussion | SPC | Armstrong, Bailey, Carson, Castro, Cochran, Deaf Smith and 11 more | 4 hr |
Nearby
Mesoscale Discussions in Texas, 2004Mesoscale Discussions in Louisiana, 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; radar from the NEXRAD Level II archive.