Alert archive / Texas / Severe Thunderstorm Watches in 2013
Severe Thunderstorm Watch 30
The Storm Prediction Center issued this severe thunderstorm watch at Feb 10, 2013, 4:18 AM CST for 8 counties in Arkansas; 9 parishes in Louisiana; 21 counties in Texas. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 10, 2013, 4:18 AM CST (10:18 UTC)
- Expired
- Feb 10, 2013, 9:29 AM CST
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 38 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, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Natchitoches Parish, LA, Red River Parish, LA, Sabine Parish, LA, Webster Parish, LA, Angelina County, TX, Bowie County, TX, Camp County, TX, Cass County, TX, Cherokee County, TX, Franklin County, TX, Gregg County, TX, Harrison County, TX, Marion County, TX, Morris County, TX, Nacogdoches County, TX, Panola County, TX, Red River County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, Shelby County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Wood County, TX
The radar
The Shreveport radar (KSHV), 57 km from the middle of the area, began a volume at 10:20 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
- 20%
- One or more EF2 to EF5 tornadoes
- 10%
- Ten or more severe wind reports
- 30%
- 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
4 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 10, 4:46 AM CST | Severe Thunderstorm Warning | SHV | Bowie, Franklin, Red River, Titus | 59 min |
| Feb 10, 5:36 AM CST | Severe Thunderstorm Warning | SHV | Lafayette, Miller | 39 min |
| Feb 10, 5:42 AM CST | Severe Thunderstorm Warning | SHV | Hempstead, Howard, Little River, Miller, Sevier | 48 min |
| Feb 10, 7:39 AM CST | Severe Thunderstorm Warning | SHV | Caddo, De Soto | 51 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
Fort Worth, TX (KFWD), launched 00:00Z, 10.3 hours before the alert went out and 280 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
- 1 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 459 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 728 m²/s²
- 0-3 km storm-relative helicity
- 777 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 10, 6:58 AM CST | Tornado Watch | SPC | Ashley, Chicot, Union | 7 hr |
| Feb 10, 5:12 AM CST | Mesoscale Discussion | SPC | Sabine | 93 min |
| Feb 10, 6:20 AM CST | Mesoscale Discussion | SPC | Allen, Avoyelles, Beauregard, Bienville, Caldwell, Catahoula and 18 more | 85 min |
| Feb 10, 10:19 AM CST | Mesoscale Discussion | SPC | Acadia, Allen, Avoyelles, Beauregard, Caldwell, Catahoula and 19 more | 86 min |
| Feb 10, 10:53 AM CST | Mesoscale Discussion | SPC | Avoyelles, Concordia, Evangeline, Pointe Coupee, Saint Landry, West Feliciana | 97 min |
| Feb 10, 11:10 AM CST | Tornado Watch | SPC | Avoyelles, Catahoula, Concordia, East Baton Rouge, East Feliciana, Evangeline and 12 more | 7 hr |
| Feb 10, 1:59 PM CST | Mesoscale Discussion | SPC | East Baton Rouge, East Feliciana, Livingston, Pointe Coupee, Saint Helena, Saint Landry and 5 more | 91 min |
| Feb 10, 3:47 PM CST | Mesoscale Discussion | SPC | Saint Helena, Washington | 88 min |
| Feb 10, 5:03 PM CST | Mesoscale Discussion | SPC | East Baton Rouge, East Feliciana, Evangeline, Livingston, Pointe Coupee, Saint Helena and 6 more | 27 min |
| Feb 10, 5:34 PM CST | Tornado Watch | SPC | East Baton Rouge, East Feliciana, Livingston, Pointe Coupee, Saint Helena, Saint Tammany and 4 more | 5 hr |
| Feb 9, 11:12 PM CST | Mesoscale Discussion | SPC | Bosque, Brown, Callahan, Coleman, Comanche, Concho and 21 more | 2 hr |
| Feb 9, 11:37 PM CST | Severe Thunderstorm Watch | SPC | Bell, Bosque, Brown, Callahan, Coleman, Collin and 52 more | 6 hr |
| Feb 10, 12:41 AM CST | Mesoscale Discussion | SPC | Bandera, Bastrop, Bexar, Blanco, Burnet, Caldwell and 11 more | 94 min |
| Feb 10, 1:33 AM CST | Tornado Watch | SPC | Anderson, Bandera, Bastrop, Bell, Blanco, Brazos and 22 more | 6 hr |
| Feb 10, 2:39 AM CST | Mesoscale Discussion | SPC | Bosque, Camp, Cherokee, Collin, Coryell, Dallas and 33 more | 2 hr |
Nearby
Severe Thunderstorm Watches in Texas, 2013Severe Thunderstorm Watches in Louisiana, 2013Severe Thunderstorm Watches in Arkansas, 2013Every severe thunderstorm watch in 2013
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.