Alert archive / Texas / Severe Thunderstorm Watches in 2008
Severe Thunderstorm Watch 90
The Storm Prediction Center issued this severe thunderstorm watch at Mar 3, 2008, 6:47 AM CST for 9 counties in Arkansas; 11 parishes in Louisiana; 49 counties in Texas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 3, 2008, 6:47 AM CST (12:47 UTC)
- Expired
- Mar 3, 2008, 1:00 PM CST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 69 counties
Columbia County, AR, Hempstead County, AR, Howard County, AR, Lafayette County, AR, Little River County, AR, Miller County, AR, Nevada County, AR, Sevier County, AR, Union County, AR, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Lincoln Parish, LA, Natchitoches Parish, LA, Red River Parish, LA, Sabine Parish, LA, Union Parish, LA, Webster Parish, LA, Angelina County, TX, Austin County, TX, Bowie County, TX, Brazoria County, TX, Brazos County, TX, Burleson County, TX, Camp County, TX, Cass County, TX, Chambers County, TX, Cherokee County, TX, Colorado County, TX, Fayette County, TX, Fort Bend County, TX, Franklin County, TX, Galveston County, TX, Gregg County, TX, Grimes County, TX, Hardin County, TX, Harris County, TX, Harrison County, TX, Houston County, TX, Jasper County, TX, Lavaca County, TX, Lee 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, Red River County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, San Jacinto County, TX, Shelby County, TX, Smith County, TX, Titus County, TX, Trinity County, TX, Tyler County, TX, Upshur County, TX, Walker County, TX, Waller County, TX, Washington County, TX, Wharton County, TX, Wood County, TX
The radar
The Shreveport radar (KSHV), 126 km from the middle of the area, began a volume at 12:48 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 10%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 60%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 20%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
11 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 3, 7:15 AM CST | Severe Thunderstorm Warning | SHV | Camp, Gregg, Rusk, Upshur | 60 min |
| Mar 3, 7:34 AM CST | Severe Thunderstorm Warning | SHV | Cherokee, Smith | 56 min |
| Mar 3, 7:38 AM CST | Severe Thunderstorm Warning | SHV | Morris, Titus | 67 min |
| Mar 3, 7:47 AM CST | Tornado Warning | SHV | Bowie, Morris, Red River | 58 min |
| Mar 3, 7:53 AM CST | Severe Thunderstorm Warning | SHV | Cass, Harrison, Marion | 67 min |
| Mar 3, 8:09 AM CST | Tornado Warning | SHV | Little River | 66 min |
| Mar 3, 8:22 AM CST | Severe Thunderstorm Warning | SHV | Gregg, Rusk | 38 min |
| Mar 3, 8:39 AM CST | Tornado Warning | SHV | Hempstead, Howard, Little River, Sevier | 47 min |
| Mar 3, 8:44 AM CST | Severe Thunderstorm Warning | SHV | Hempstead, Lafayette, Miller | 61 min |
| Mar 3, 10:38 AM CST | Flash Flood Warning | SHV | Harrison | 2 hr |
| Mar 3, 11:03 AM CST | Severe Thunderstorm Warning | SHV | Caddo, De Soto | 42 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Shreveport, LA (KSHV), launched 12:00Z, 0.8 hours before the alert went out and 135 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
- 77 J/kg
- Mixed-layer CIN
- -167 J/kg
- Mixed-layer LCL
- 667 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 350 m²/s²
- 0-3 km storm-relative helicity
- 489 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 2, 8:23 PM CST | Tornado Watch | SPC | Crawford, Franklin, Howard, Little River, Miller, Polk and 3 more | 8 hr |
| Mar 3, 1:36 AM CST | Mesoscale Discussion | SPC | Howard, Little River, Logan, Montgomery, Pike, Polk and 3 more | 54 min |
| Mar 3, 3:01 AM CST | Mesoscale Discussion | SPC | Clark, Cleburne, Conway, Dallas, Faulkner, Garland and 20 more | 89 min |
| Mar 3, 5:21 AM CST | Mesoscale Discussion | SPC | Lafayette, Miller | 84 min |
| Mar 3, 10:18 AM CST | Mesoscale Discussion | SPC | Columbia, Hempstead, Howard, Lafayette, Little River, Miller and 3 more | 87 min |
| Mar 3, 10:36 AM CST | Tornado Watch | SPC | Ashley, Bradley, Calhoun, Chicot, Cleveland, Columbia and 8 more | 9 hr |
| Mar 3, 1:25 PM CST | Mesoscale Discussion | SPC | Ashley, Chicot, Desha, Drew | 95 min |
| Mar 3, 2:25 PM CST | Tornado Watch | SPC | Ascension, Assumption, East Baton Rouge, East Feliciana, Iberia, Iberville and 19 more | 11 hr |
| Mar 3, 5:58 PM CST | Mesoscale Discussion | SPC | Ascension, Assumption, East Baton Rouge, East Feliciana, Iberia, Iberville and 19 more | 62 min |
| Mar 2, 6:05 PM CST | Tornado Watch | SPC | Bosque, Callahan, Collin, Comanche, Cooke, Dallas and 28 more | 8 hr |
| Mar 2, 8:01 PM CST | Mesoscale Discussion | SPC | Collin, Delta, Fannin, Franklin, Grayson, Hopkins and 4 more | 59 min |
| Mar 2, 11:04 PM CST | Mesoscale Discussion | SPC | Brown, Callahan, Coke, Coleman, Comanche, Concho and 12 more | 56 min |
| Mar 2, 11:27 PM CST | Severe Thunderstorm Watch | SPC | Brown, Coke, Coleman, Concho, Crockett, Irion and 13 more | 5 hr |
| Mar 3, 1:57 AM CST | Tornado Watch | SPC | Anderson, Bell, Bosque, Collin, Comanche, Coryell and 26 more | 6 hr |
| Mar 3, 3:24 AM CST | Mesoscale Discussion | SPC | Bastrop, Blanco, Brazos, Burleson, Burnet, Grimes and 9 more | 96 min |
Nearby
Severe Thunderstorm Watches in Texas, 2008Severe Thunderstorm Watches in Louisiana, 2008Severe Thunderstorm Watches in Arkansas, 2008Every severe thunderstorm watch 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.