Alert archive / Texas / Severe Thunderstorm Watches in 2005
Severe Thunderstorm Watch 149
The Storm Prediction Center issued this severe thunderstorm watch at Apr 11, 2005, 3:45 AM CDT for 6 counties in Arkansas; 18 parishes in Louisiana; 32 counties in Texas. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 11, 2005, 3:45 AM CDT (08:45 UTC)
- Expired
- Apr 11, 2005, 11:00 AM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
All 56 counties
Ashley County, AR, Bradley County, AR, Columbia County, AR, Lafayette County, AR, Miller County, AR, Union County, AR, Beauregard Parish, LA, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Calcasieu Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Grant Parish, LA, Jackson Parish, LA, Lincoln Parish, LA, Natchitoches Parish, LA, Ouachita Parish, LA, Red River Parish, LA, Sabine Parish, LA, Union Parish, LA, Vernon Parish, LA, Webster Parish, LA, Winn Parish, LA, Angelina County, TX, Bowie County, TX, Cass County, TX, Chambers County, TX, Cherokee County, TX, Fort Bend County, TX, Gregg County, TX, Hardin County, TX, Harris County, TX, Harrison County, TX, Houston County, TX, Jasper County, TX, Jefferson County, TX, Liberty County, TX, Marion County, TX, Montgomery County, TX, Morris County, TX, Nacogdoches County, TX, Newton County, TX, Orange 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, Trinity County, TX, Tyler County, TX, Upshur County, TX, Walker County, TX, Waller County, TX
Warnings issued inside it
22 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 11, 3:46 AM CDT | Severe Thunderstorm Warning | HGX | Grimes, Waller | 44 min |
| Apr 11, 3:56 AM CDT | Severe Thunderstorm Warning | HGX | Trinity | 49 min |
| Apr 11, 3:56 AM CDT | Severe Thunderstorm Warning | HGX | Trinity | 50 min |
| Apr 11, 4:07 AM CDT | Severe Thunderstorm Warning | SHV | Angelina | 53 min |
| Apr 11, 4:12 AM CDT | Severe Thunderstorm Warning | HGX | San Jacinto, Walker | 48 min |
| Apr 11, 4:25 AM CDT | Severe Thunderstorm Warning | HGX | Grimes, Montgomery | 50 min |
| Apr 11, 4:58 AM CDT | Severe Thunderstorm Warning | HGX | Walker | 47 min |
| Apr 11, 5:31 AM CDT | Tornado Warning | HGX | Walker | 29 min |
| Apr 11, 5:56 AM CDT | Flash Flood Warning | SHV | Caddo | 4 hr |
| Apr 11, 6:34 AM CDT | Severe Thunderstorm Warning | HGX | Walker | 46 min |
| Apr 11, 7:08 AM CDT | Flash Flood Warning | SHV | Harrison | 4 hr |
| Apr 11, 7:16 AM CDT | Severe Thunderstorm Warning | HGX | Trinity | 44 min |
| Apr 11, 7:39 AM CDT | Flash Flood Warning | HGX | Montgomery, Trinity, Walker | 2 hr |
| Apr 11, 8:00 AM CDT | Severe Thunderstorm Warning | HGX | San Jacinto, Walker | 30 min |
| Apr 11, 8:14 AM CDT | Severe Thunderstorm Warning | SHV | Angelina | 46 min |
| Apr 11, 8:24 AM CDT | Severe Thunderstorm Warning | HGX | Polk | 66 min |
| Apr 11, 9:07 AM CDT | Severe Thunderstorm Warning | HGX | Harris, Liberty, Montgomery | 38 min |
| Apr 11, 9:13 AM CDT | Severe Thunderstorm Warning | HGX | Polk, San Jacinto | 47 min |
| Apr 11, 9:16 AM CDT | Tornado Warning | HGX | Harris, Montgomery | 44 min |
| Apr 11, 9:50 AM CDT | Flash Flood Warning | SHV | Claiborne | 4 hr |
| Apr 11, 9:52 AM CDT | Tornado Warning | HGX | Harris | 44 min |
| Apr 11, 9:53 AM CDT | Flash Flood Warning | SHV | Caddo | 3 hr |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 8.8 hours before the alert went out and 161 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
- 409 J/kg
- Mixed-layer CIN
- -265 J/kg
- Mixed-layer LCL
- 880 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 119 m²/s²
- 0-3 km storm-relative helicity
- 191 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 10, 8:53 PM CDT | Mesoscale Discussion | SPC | Benton, Crawford, Sebastian, Washington | 2 hr |
| Apr 10, 9:15 PM CDT | Severe Thunderstorm Watch | SPC | Benton, Carroll, Clark, Crawford, Franklin, Howard and 10 more | 7 hr |
| Apr 11, 1:23 AM CDT | Mesoscale Discussion | SPC | Benton, Carroll, Clark, Crawford, Franklin, Howard and 11 more | 67 min |
| Apr 11, 3:12 AM CDT | Mesoscale Discussion | SPC | Columbia, Lafayette, Miller, Union | 63 min |
| Apr 11, 3:23 AM CDT | Mesoscale Discussion | SPC | Benton, Carroll, Clark, Crawford, Franklin, Howard and 11 more | 67 min |
| Apr 11, 6:17 AM CDT | Mesoscale Discussion | SPC | Arkansas, Clay, Cleburne, Conway, Craighead, Crittenden and 27 more | 118 min |
| Apr 11, 6:53 AM CDT | Mesoscale Discussion | SPC | Ashley, Columbia, Lafayette, Miller, Union | 67 min |
| Apr 11, 9:41 AM CDT | Mesoscale Discussion | SPC | Ashley, Bradley, Chicot, Columbia, Union | 2 hr |
| Apr 11, 10:15 AM CDT | Tornado Watch | SPC | Ashley, Chicot, Desha, Drew | 9 hr |
| Apr 11, 12:12 PM CDT | Mesoscale Discussion | SPC | Ashley, Bradley, Chicot, Columbia, Union | 2 hr |
| Apr 11, 2:01 PM CDT | Mesoscale Discussion | SPC | Benton, Carroll, Madison, Washington | 89 min |
| Apr 11, 3:56 AM CDT | Mesoscale Discussion | SPC | Franklin, Madison, Tensas | 64 min |
| Apr 11, 1:41 PM CDT | Mesoscale Discussion | SPC | Ascension, Assumption, East Baton Rouge, East Feliciana, Iberville, Lafourche and 14 more | 2 hr |
| Apr 11, 2:05 PM CDT | Tornado Watch | SPC | Ascension, Assumption, East Baton Rouge, East Feliciana, Iberia, Iberville and 14 more | 7 hr |
| Apr 11, 6:35 PM CDT | Tornado Watch | SPC | Jefferson, Lafourche, Orleans, Saint Bernard, Saint Charles, Saint Tammany and 1 more | 4 hr |
| Apr 11, 6:52 PM CDT | Mesoscale Discussion | SPC | Ascension, Assumption, East Baton Rouge, East Feliciana, Iberville, Livingston and 9 more | 83 min |
| Apr 10, 7:39 PM CDT | Mesoscale Discussion | SPC | Bandera, Bastrop, Bell, Bexar, Blanco, Bosque and 45 more | 96 min |
| Apr 10, 10:45 PM CDT | Severe Thunderstorm Watch | SPC | Anderson, Bastrop, Bell, Bexar, Blanco, Brazos and 39 more | 6 hr |
Nearby
Severe Thunderstorm Watches in Texas, 2005Severe Thunderstorm Watches in Louisiana, 2005Severe Thunderstorm Watches in Arkansas, 2005Every severe thunderstorm watch in 2005
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.