Alert archive / Texas / Mesoscale Discussions in 2004
Mesoscale Discussion 2046
The Storm Prediction Center issued this mesoscale discussion at Aug 19, 2004, 12:51 PM CDT for 14 counties in Arkansas; 8 parishes in Louisiana; 34 counties in Texas. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 19, 2004, 12:51 PM CDT (17:51 UTC)
- Expired
- Aug 19, 2004, 3:45 PM CDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
All 56 counties
Clark County, AR, Columbia County, AR, Garland County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Lafayette County, AR, Little River County, AR, Miller County, AR, Montgomery County, AR, Nevada County, AR, Ouachita County, AR, Pike County, AR, Sevier County, AR, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Red River Parish, LA, Sabine Parish, LA, Webster Parish, LA, Anderson County, TX, Angelina County, TX, Bowie County, TX, Cass County, TX, Cherokee County, TX, Freestone County, TX, Gregg County, TX, Grimes County, TX, Hardin County, TX, Harris County, TX, Harrison County, TX, Houston County, TX, Jasper County, TX, Leon County, TX, Liberty County, TX, Madison County, TX, Marion County, TX, Montgomery County, TX, Morris County, TX, Nacogdoches County, TX, Newton 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, Smith County, TX, Trinity County, TX, Tyler County, TX, Upshur County, TX, Walker County, TX, Waller County, TX
The radar
The Shreveport radar (KSHV), 94 km from the middle of the area, began a volume at 17:55 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
Shreveport, LA (KSHV), launched 12:00Z, 5.9 hours before the alert went out and 102 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
- 2168 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 652 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 35 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
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 19, 2:42 PM CDT | Mesoscale Discussion | SPC | Bosque, Brown, Coleman, Comanche, Freestone, Hamilton and 4 more | 3 hr |
| Aug 19, 5:20 PM CDT | Mesoscale Discussion | SPC | Baylor, Borden, Childress, Cottle, Crosby, Dawson and 20 more | 115 min |
Nearby
Mesoscale Discussions in Texas, 2004Mesoscale Discussions in Arkansas, 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.