Alert archive / Texas / Mesoscale Discussions in 2008
Mesoscale Discussion 499
The Storm Prediction Center issued this mesoscale discussion at Mar 29, 2008, 8:11 PM CDT for Lafayette County, Miller County, Arkansas; 23 counties in Texas. It was in force for 64 min.
The area
The outline as issued.
The facts
- Issued
- Mar 29, 2008, 8:11 PM CDT (01:11 UTC)
- Expired
- Mar 29, 2008, 9:15 PM CDT
- In force
- 64 min
- Issued by
- the Storm Prediction Center
All 25 counties
Lafayette County, AR, Miller County, AR, Anderson County, TX, Bowie County, TX, Camp County, TX, Cass County, TX, Cherokee County, TX, Delta County, TX, Franklin County, TX, Gregg County, TX, Harrison County, TX, Henderson County, TX, Hopkins County, TX, Lamar County, TX, Marion County, TX, Morris County, TX, Panola County, TX, Rains County, TX, Red River County, TX, Rusk County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Van Zandt County, TX, Wood County, TX
The radar
The Shreveport radar (KSHV), 131 km from the middle of the area, began a volume at 01:11 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 00:00Z, 1.2 hours before the alert went out and 139 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
- 1009 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 1126 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 88 m²/s²
- 0-3 km storm-relative helicity
- 217 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 6.2
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 30, 12:45 AM CDT | Mesoscale Discussion | SPC | Benton, Boone, Bradley, Calhoun, Carroll, Clark and 44 more | 2 hr |
| Mar 30, 6:48 AM CDT | Mesoscale Discussion | SPC | Ashley, Bradley, Calhoun, Columbia, Lafayette, Miller and 2 more | 117 min |
| Mar 30, 9:08 AM CDT | Mesoscale Discussion | SPC | Columbia, Hempstead, Howard, Lafayette, Little River, Miller and 5 more | 2 hr |
| Mar 30, 12:11 PM CDT | Mesoscale Discussion | SPC | Lafayette | 2 hr |
| Mar 30, 3:54 PM CDT | Mesoscale Discussion | SPC | Anderson, Angelina, Camp, Cass, Cherokee, Gregg and 24 more | 2 hr |
Nearby
Mesoscale Discussions in Texas, 2008Mesoscale Discussions in Arkansas, 2008Every mesoscale discussion in 2008
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.