Alert archive / Texas / Mesoscale Discussions in 2006
Mesoscale Discussion 690
The Storm Prediction Center issued this mesoscale discussion at Apr 29, 2006, 4:03 AM CDT for 4 counties in Arkansas; Choctaw County, McCurtain County, Pushmataha County, Oklahoma; 67 counties in Texas. It was in force for 57 min.
The area
The outline as issued.
The facts
- Issued
- Apr 29, 2006, 4:03 AM CDT (09:03 UTC)
- Expired
- Apr 29, 2006, 5:00 AM CDT
- In force
- 57 min
- Issued by
- the Storm Prediction Center
All 74 counties
Howard County, AR, Little River County, AR, Miller County, AR, Sevier County, AR, Choctaw County, OK, McCurtain County, OK, Pushmataha County, OK, Anderson County, TX, Angelina County, TX, Atascosa County, TX, Austin County, TX, Bastrop County, TX, Bell County, TX, Bexar County, TX, Bowie County, TX, Brazos County, TX, Burleson County, TX, Caldwell County, TX, Camp County, TX, Cass County, TX, Cherokee County, TX, Colorado County, TX, Comal County, TX, Delta County, TX, DeWitt County, TX, Falls County, TX, Fayette County, TX, Franklin County, TX, Freestone County, TX, Gonzales County, TX, Gregg County, TX, Grimes County, TX, Guadalupe County, TX, Harris County, TX, Harrison County, TX, Hays County, TX, Henderson County, TX, Hopkins County, TX, Houston County, TX, Hunt County, TX, Karnes County, TX, Kaufman County, TX, Lamar County, TX, Lavaca County, TX, Lee County, TX, Leon County, TX, Limestone County, TX, Madison County, TX, Marion County, TX, Milam County, TX, Montgomery County, TX, Morris County, TX, Nacogdoches County, TX, Navarro County, TX, Panola County, TX, Polk County, TX, Rains County, TX, Red River County, TX, Robertson County, TX, Rusk County, TX, San Jacinto County, TX, Shelby County, TX, Smith County, TX, Titus County, TX, Travis County, TX, Trinity County, TX, Upshur County, TX, Van Zandt County, TX, Walker County, TX, Waller County, TX, Washington County, TX, Williamson County, TX, Wilson County, TX, Wood County, TX
The radar
The Ft Hood radar (KGRK), 108 km from the middle of the area, began a volume at 09:07 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, 9.1 hours before the alert went out and 209 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
- 446 J/kg
- Mixed-layer CIN
- -52 J/kg
- Mixed-layer LCL
- 654 m above ground
- 0-6 km bulk shear
- 74 kt
- 0-1 km storm-relative helicity
- 532 m²/s²
- 0-3 km storm-relative helicity
- 752 m²/s²
- Significant tornado parameter
- 1.8
- Supercell composite
- 8.7
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 28, 11:08 PM CDT | Tornado Watch | SPC | Howard, Little River, Miller, Sevier | 7 hr |
| Apr 29, 6:04 AM CDT | Tornado Watch | SPC | Columbia, Lafayette, Little River, Miller, Union | 7 hr |
| Apr 29, 7:37 AM CDT | Mesoscale Discussion | SPC | Columbia, Lafayette, Little River, Miller, Union | 83 min |
| Apr 29, 11:55 AM CDT | Mesoscale Discussion | SPC | Columbia, Hempstead, Howard, Lafayette, Little River, Miller and 4 more | 65 min |
| Apr 29, 12:47 PM CDT | Tornado Watch | SPC | Bradley, Calhoun, Clark, Cleveland, Columbia, Conway and 31 more | 8 hr |
| Apr 29, 2:34 PM CDT | Mesoscale Discussion | SPC | Clark, Columbia, Crawford, Franklin, Garland, Hempstead and 17 more | 86 min |
| Apr 29, 6:26 PM CDT | Mesoscale Discussion | SPC | Bradley, Calhoun, Cleburne, Cleveland, Conway, Dallas and 12 more | 94 min |
| Apr 28, 8:44 PM CDT | Mesoscale Discussion | SPC | Bryan, Carter, Choctaw, Jefferson, Johnston, Love and 1 more | 91 min |
| Apr 29, 10:05 AM CDT | Mesoscale Discussion | SPC | Atoka, Bryan, Carter, Choctaw, Coal, Garvin and 17 more | 115 min |
| Apr 28, 7:43 PM CDT | Tornado Watch | SPC | Bandera, Bastrop, Bexar, Blanco, Burnet, Caldwell and 33 more | 6 hr |
| Apr 28, 10:03 PM CDT | Mesoscale Discussion | SPC | Anderson, Bastrop, Brazos, Burleson, Camp, Cass and 32 more | 87 min |
| Apr 28, 11:14 PM CDT | Mesoscale Discussion | SPC | Bandera, Bexar, Edwards, Frio, Kendall, Kerr and 5 more | 91 min |
| Apr 29, 1:51 AM CDT | Mesoscale Discussion | SPC | Atascosa, Austin, Bastrop, Bell, Bexar, Brazos and 24 more | 24 min |
| Apr 29, 1:58 AM CDT | Tornado Watch | SPC | Atascosa, Bandera, Bastrop, Bell, Bexar, Blanco and 18 more | 3 hr |
| Apr 29, 9:57 AM CDT | Mesoscale Discussion | SPC | Chambers, Hardin, Jefferson, Newton, Orange | 2 hr |
Nearby
Mesoscale Discussions in Texas, 2006Mesoscale Discussions in Arkansas, 2006Mesoscale Discussions in Oklahoma, 2006Every mesoscale discussion in 2006
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.