Alert archive / Texas / Severe Thunderstorm Watches in 2014
Severe Thunderstorm Watch 60
The Storm Prediction Center issued this severe thunderstorm watch at Apr 4, 2014, 3:34 AM CDT for 15 parishes in Louisiana; 30 counties in Texas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 4, 2014, 3:34 AM CDT (08:34 UTC)
- Expired
- Apr 4, 2014, 9:46 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 45 counties
Allen Parish, LA, Beauregard Parish, LA, Calcasieu Parish, LA, Caldwell Parish, LA, Cameron Parish, LA, De Soto Parish, LA, Grant Parish, LA, Jefferson Davis Parish, LA, LaSalle Parish, LA, Natchitoches Parish, LA, Rapides Parish, LA, Red River Parish, LA, Sabine Parish, LA, Vernon Parish, LA, Winn Parish, LA, Angelina County, TX, Austin County, TX, Brazoria County, TX, Brazos County, TX, Burleson County, TX, Chambers County, TX, Fort Bend County, TX, Galveston County, TX, Grimes County, TX, Hardin County, TX, Harris County, TX, Houston County, TX, Jasper County, TX, Jefferson County, TX, Liberty County, TX, Madison County, TX, Montgomery County, TX, Nacogdoches County, TX, Newton County, TX, Orange County, TX, Polk County, TX, Sabine County, TX, San Augustine County, TX, San Jacinto County, TX, Shelby County, TX, Trinity County, TX, Tyler County, TX, Walker County, TX, Waller County, TX, Washington County, TX
The radar
The Ft Polk radar (KPOE), 115 km from the middle of the area, began a volume at 08:35 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
- 5%
- Ten or more severe wind reports
- 50%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 50%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
18 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 4, 3:38 AM CDT | Severe Thunderstorm Warning | SHV | Natchitoches, Sabine | 67 min |
| Apr 4, 3:41 AM CDT | Severe Thunderstorm Warning | SHV | Caldwell, Jackson, Natchitoches, Ouachita, Winn | 64 min |
| Apr 4, 3:56 AM CDT | Severe Thunderstorm Warning | LCH | Jasper, Newton | 64 min |
| Apr 4, 4:00 AM CDT | Severe Thunderstorm Warning | SHV | Grant, Natchitoches, Sabine, Winn | 60 min |
| Apr 4, 4:00 AM CDT | Severe Thunderstorm Warning | HGX | Grimes, Montgomery, San Jacinto, Trinity, Walker | 45 min |
| Apr 4, 4:33 AM CDT | Severe Thunderstorm Warning | LCH | Vernon | 57 min |
| Apr 4, 4:42 AM CDT | Severe Thunderstorm Warning | HGX | Liberty, Montgomery, Polk, San Jacinto, Trinity, Walker | 48 min |
| Apr 4, 4:45 AM CDT | Severe Thunderstorm Warning | SHV | Caldwell, Grant, LaSalle, Natchitoches, Winn | 60 min |
| Apr 4, 5:29 AM CDT | Severe Thunderstorm Warning | LCH | Rapides, Vernon | 61 min |
| Apr 4, 5:48 AM CDT | Severe Thunderstorm Warning | SHV | Caldwell, Grant, LaSalle | 57 min |
| Apr 4, 5:55 AM CDT | Severe Thunderstorm Warning | LCH | Avoyelles, Rapides | 65 min |
| Apr 4, 6:13 AM CDT | Severe Thunderstorm Warning | LCH | Rapides, Vernon | 62 min |
| Apr 4, 6:17 AM CDT | Severe Thunderstorm Warning | LCH | Hardin, Jasper, Newton, Tyler | 58 min |
| Apr 4, 6:52 AM CDT | Severe Thunderstorm Warning | LCH | Allen, Beauregard, Calcasieu, Jefferson Davis, Rapides, Vernon | 68 min |
| Apr 4, 7:09 AM CDT | Tornado Warning | LCH | Evangeline, Rapides | 36 min |
| Apr 4, 7:16 AM CDT | Tornado Warning | LCH | Beauregard | 29 min |
| Apr 4, 7:49 AM CDT | Severe Thunderstorm Warning | LCH | Acadia, Allen, Evangeline, Jefferson Davis, Lafayette, Saint Landry and 1 more | 71 min |
| Apr 4, 8:23 AM CDT | Severe Thunderstorm Warning | LCH | Cameron, Vermilion | 67 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 (KBAD), launched 00:00Z, 8.6 hours before the alert went out and 142 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
- 2253 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 988 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 151 m²/s²
- 0-3 km storm-relative helicity
- 155 m²/s²
- Significant tornado parameter
- 1.9
- Supercell composite
- 6.9
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 3, 8:44 PM CDT | Mesoscale Discussion | SPC | Bienville, Bossier, Caddo, Caldwell, Claiborne, De Soto and 11 more | 31 min |
| Apr 3, 8:54 PM CDT | Tornado Watch | SPC | Bienville, Bossier, Caddo, Claiborne, De Soto, Jackson and 5 more | 7 hr |
| Apr 4, 12:20 AM CDT | Mesoscale Discussion | SPC | Caldwell, Catahoula, East Carroll, Franklin, LaSalle, Madison and 5 more | 55 min |
| Apr 4, 12:40 AM CDT | Tornado Watch | SPC | Catahoula, Concordia, East Carroll, Franklin, Madison, Morehouse and 3 more | 5 hr |
| Apr 4, 12:55 AM CDT | Mesoscale Discussion | SPC | Bienville, Bossier, Caddo, Claiborne, De Soto, Jackson and 4 more | 95 min |
| Apr 4, 3:45 AM CDT | Mesoscale Discussion | SPC | Caldwell, East Carroll, Franklin, Jackson, Madison, Morehouse and 4 more | 60 min |
| Apr 4, 5:04 AM CDT | Mesoscale Discussion | SPC | Acadia, Ascension, Assumption, East Baton Rouge, East Feliciana, Iberia and 15 more | 116 min |
| Apr 4, 5:25 AM CDT | Severe Thunderstorm Watch | SPC | Acadia, Ascension, Assumption, Avoyelles, Catahoula, Concordia and 30 more | 7 hr |
| Apr 4, 5:28 AM CDT | Mesoscale Discussion | SPC | Catahoula, Concordia, Madison, Tensas | 92 min |
| Apr 4, 5:49 AM CDT | Mesoscale Discussion | SPC | Allen, Beauregard, Calcasieu, Caldwell, De Soto, Franklin and 8 more | 56 min |
| Apr 4, 7:22 AM CDT | Mesoscale Discussion | SPC | Acadia, Allen, Ascension, Assumption, Avoyelles, Calcasieu and 26 more | 83 min |
| Apr 4, 10:12 AM CDT | Mesoscale Discussion | SPC | Acadia, Ascension, Assumption, Avoyelles, Cameron, Catahoula and 28 more | 63 min |
| Apr 3, 7:03 PM CDT | Mesoscale Discussion | SPC | Anderson, Bell, Bosque, Bowie, Camp, Cass and 49 more | 57 min |
| Apr 3, 7:18 PM CDT | Mesoscale Discussion | SPC | Bandera, Bastrop, Bexar, Blanco, Burnet, Caldwell and 11 more | 57 min |
| Apr 3, 7:35 PM CDT | Severe Thunderstorm Watch | SPC | Bandera, Bastrop, Blanco, Burnet, Caldwell, Comal and 9 more | 2 hr |
| Apr 3, 11:52 PM CDT | Severe Thunderstorm Watch | SPC | Atascosa, Bee, Dimmit, Duval, Frio, Goliad and 12 more | 8 hr |
| Apr 4, 2:40 AM CDT | Mesoscale Discussion | SPC | Angelina, Austin, Brazoria, Brazos, Burleson, Chambers and 26 more | 2 hr |
| Apr 4, 2:58 AM CDT | Mesoscale Discussion | SPC | Atascosa, Bee, Dimmit, Frio, Karnes, La Salle and 3 more | 92 min |
| Apr 4, 6:12 AM CDT | Mesoscale Discussion | SPC | Bee, Brooks, Cameron, Duval, Hidalgo, Jim Hogg and 12 more | 3 hr |
Nearby
Severe Thunderstorm Watches in Texas, 2014Severe Thunderstorm Watches in Louisiana, 2014Every severe thunderstorm watch in 2014
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.