Alert archive / Texas / Mesoscale Discussions in 2007
Mesoscale Discussion 433
The Storm Prediction Center issued this mesoscale discussion at Apr 3, 2007, 7:41 PM CDT for 7 counties in Arkansas; McCurtain County, Oklahoma; 48 counties in Texas. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 3, 2007, 7:41 PM CDT (00:41 UTC)
- Expired
- Apr 3, 2007, 9:45 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 56 counties
Clark County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Little River County, AR, Pike County, AR, Sevier County, AR, McCurtain County, OK, Bandera County, TX, Bell County, TX, Blanco County, TX, Bosque County, TX, Bowie County, TX, Burnet County, TX, Camp County, TX, Collin County, TX, Comanche County, TX, Coryell County, TX, Dallas County, TX, Delta County, TX, Edwards County, TX, Ellis County, TX, Erath County, TX, Fannin County, TX, Franklin County, TX, Gillespie County, TX, Hamilton County, TX, Henderson County, TX, Hill County, TX, Hood County, TX, Hopkins County, TX, Hunt County, TX, Johnson County, TX, Kaufman County, TX, Kerr County, TX, Kimble County, TX, Lamar County, TX, Lampasas County, TX, Limestone County, TX, Llano County, TX, Mason County, TX, McLennan County, TX, Mills County, TX, Morris County, TX, Navarro County, TX, Rains County, TX, Real County, TX, Red River County, TX, Rockwall County, TX, San Saba County, TX, Somervell County, TX, Tarrant County, TX, Titus County, TX, Upshur 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 00:45 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Fort Worth, TX (KFWD), launched 00:00Z, 0.7 hours before the alert went out and 136 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
- 3958 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 1051 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- -15 m²/s²
- 0-3 km storm-relative helicity
- 33 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.4
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 |
|---|---|---|---|---|
| Apr 3, 9:14 PM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 18 more | 61 min |
| Apr 3, 9:53 PM CDT | Severe Thunderstorm Watch | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 12 more | 5 hr |
| Apr 4, 2:07 AM CDT | Mesoscale Discussion | SPC | Ashley | 113 min |
| Apr 3, 11:02 PM CDT | Mesoscale Discussion | SPC | Brooks, Cameron, Hidalgo, Jim Hogg, Kenedy, Starr and 1 more | 2 hr |
Nearby
Mesoscale Discussions in Texas, 2007Mesoscale Discussions in Arkansas, 2007Mesoscale Discussions in Oklahoma, 2007Every mesoscale discussion in 2007
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.