Alert archive / Louisiana / Severe Thunderstorm Watches in 2007
Severe Thunderstorm Watch 337
The Storm Prediction Center issued this severe thunderstorm watch at Jun 3, 2007, 12:22 PM CDT for 25 parishes in Louisiana; 5 counties in Texas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 3, 2007, 12:22 PM CDT (17:22 UTC)
- Expired
- Jun 3, 2007, 6:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 30 counties
Acadia Parish, LA, Allen Parish, LA, Avoyelles Parish, LA, Beauregard Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Calcasieu Parish, LA, Cameron Parish, LA, De Soto Parish, LA, Evangeline Parish, LA, Grant Parish, LA, Iberia Parish, LA, Jefferson Davis Parish, LA, Lafayette Parish, LA, LaSalle Parish, LA, Natchitoches Parish, LA, Rapides Parish, LA, Red River Parish, LA, Sabine Parish, LA, Saint Landry Parish, LA, Saint Martin Parish, LA, St. Mary Parish, LA, Vermilion Parish, LA, Vernon Parish, LA, Winn Parish, LA, Hardin County, TX, Jasper County, TX, Newton County, TX, Orange County, TX, Tyler County, TX
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
- 50%
- 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
- 80%
Warnings issued inside it
20 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 3, 12:42 PM CDT | Severe Thunderstorm Warning | SHV | Caddo, De Soto | 63 min |
| Jun 3, 12:43 PM CDT | Severe Thunderstorm Warning | LCH | Jasper, Newton | 62 min |
| Jun 3, 12:51 PM CDT | Severe Thunderstorm Warning | SHV | Sabine | 54 min |
| Jun 3, 1:24 PM CDT | Severe Thunderstorm Warning | SHV | Red River | 66 min |
| Jun 3, 1:26 PM CDT | Severe Thunderstorm Warning | LCH | Beauregard, Vernon | 64 min |
| Jun 3, 1:33 PM CDT | Severe Thunderstorm Warning | SHV | Natchitoches | 57 min |
| Jun 3, 1:42 PM CDT | Severe Thunderstorm Warning | SHV | Sabine | 33 min |
| Jun 3, 1:43 PM CDT | Severe Thunderstorm Warning | LCH | Jasper, Newton | 32 min |
| Jun 3, 2:08 PM CDT | Severe Thunderstorm Warning | LCH | Beauregard, Calcasieu | 67 min |
| Jun 3, 2:09 PM CDT | Severe Thunderstorm Warning | SHV | Winn | 66 min |
| Jun 3, 2:15 PM CDT | Severe Thunderstorm Warning | LCH | Rapides | 45 min |
| Jun 3, 2:22 PM CDT | Severe Thunderstorm Warning | LCH | Allen, Jefferson Davis | 53 min |
| Jun 3, 2:34 PM CDT | Severe Thunderstorm Warning | SHV | Grant | 56 min |
| Jun 3, 2:55 PM CDT | Severe Thunderstorm Warning | LCH | Evangeline, Rapides | 65 min |
| Jun 3, 3:00 PM CDT | Severe Thunderstorm Warning | SHV | LaSalle | 60 min |
| Jun 3, 3:12 PM CDT | Severe Thunderstorm Warning | LCH | Calcasieu, Cameron, Jefferson Davis | 63 min |
| Jun 3, 3:19 PM CDT | Severe Thunderstorm Warning | LCH | Acadia, Avoyelles, Saint Landry | 56 min |
| Jun 3, 3:48 PM CDT | Severe Thunderstorm Warning | LCH | Lafayette, Saint Martin, Vermilion | 57 min |
| Jun 3, 4:13 PM CDT | Severe Thunderstorm Warning | LCH | Iberia | 62 min |
| Jun 3, 4:54 PM CDT | Severe Thunderstorm Warning | LCH | Saint Martin, St. Mary | 52 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
Lake Charles Mun, LA (KLCH), launched 12:00Z, 5.4 hours before the alert went out and 87 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
- 1497 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 623 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 3.6
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 3, 11:47 AM CDT | Mesoscale Discussion | SPC | Allen, Beauregard, Calcasieu, De Soto, Grant, Jefferson Davis and 4 more | 58 min |
| Jun 3, 3:13 PM CDT | Mesoscale Discussion | SPC | Acadia, Allen, Ascension, Assumption, Avoyelles, Calcasieu and 32 more | 62 min |
| Jun 3, 3:35 PM CDT | Severe Thunderstorm Watch | SPC | Ascension, Assumption, Catahoula, Concordia, East Baton Rouge, East Feliciana and 11 more | 3 hr |
| Jun 3, 5:48 PM CDT | Mesoscale Discussion | SPC | Acadia, Allen, Ascension, Assumption, Avoyelles, Beauregard and 41 more | 87 min |
| Jun 2, 7:28 PM CDT | Mesoscale Discussion | SPC | Armstrong, Bailey, Briscoe, Carson, Castro, Childress and 29 more | 62 min |
| Jun 2, 9:45 PM CDT | Mesoscale Discussion | SPC | Bailey, Castro, Crosby, Garza, Hale, Hockley and 5 more | 60 min |
| Jun 2, 10:36 PM CDT | Tornado Watch | SPC | Andrews, Bailey, Borden, Castro, Cochran, Crosby and 16 more | 4 hr |
| Jun 3, 1:17 AM CDT | Mesoscale Discussion | SPC | Andrews, Bailey, Borden, Castro, Cochran, Coke and 32 more | 58 min |
| Jun 3, 2:23 AM CDT | Mesoscale Discussion | SPC | Archer, Armstrong, Baylor, Childress, Clay, Collingsworth and 11 more | 67 min |
| Jun 3, 2:58 AM CDT | Severe Thunderstorm Watch | SPC | Archer, Baylor, Clay, Foard, Hardeman, Knox and 2 more | 5 hr |
| Jun 3, 3:01 AM CDT | Mesoscale Discussion | SPC | Coke, Crane, Crockett, Ector, Glasscock, Irion and 7 more | 89 min |
| Jun 3, 3:38 AM CDT | Mesoscale Discussion | SPC | Borden, Crosby, Dawson, Dickens, Gaines, Garza and 6 more | 67 min |
| Jun 3, 5:32 AM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Clay, Wichita | 58 min |
| Jun 3, 7:04 AM CDT | Mesoscale Discussion | SPC | Clay, Collin, Cooke, Dallas, Delta, Denton and 19 more | 56 min |
| Jun 3, 8:37 AM CDT | Severe Thunderstorm Watch | SPC | Anderson, Angelina, Bosque, Cherokee, Ellis, Falls and 31 more | 5 hr |
| Jun 3, 12:42 PM CDT | Mesoscale Discussion | SPC | Andrews, Crane, Culberson, Ector, Gaines, Glasscock and 9 more | 93 min |
| Jun 3, 1:28 PM CDT | Tornado Watch | SPC | Andrews, Brewster, Crane, Culberson, Ector, Gaines and 14 more | 9 hr |
| Jun 3, 1:42 PM CDT | Mesoscale Discussion | SPC | Dallam, Deaf Smith, Hartley, Oldham | 93 min |
| Jun 3, 2:43 PM CDT | Severe Thunderstorm Watch | SPC | Dallam, Deaf Smith, Hartley, Moore, Oldham, Potter and 2 more | 7 hr |
| Jun 3, 3:29 PM CDT | Mesoscale Discussion | SPC | Brown, Coke, Coleman, Concho, Irion, McCulloch and 10 more | 31 min |
| Jun 3, 3:44 PM CDT | Severe Thunderstorm Watch | SPC | Brown, Coke, Coleman, Concho, Crockett, Irion and 10 more | 6 hr |
| Jun 3, 3:55 PM CDT | Mesoscale Discussion | SPC | Bell, Brazos, Coryell, Falls, Grimes, Lampasas and 10 more | 95 min |
| Jun 3, 3:59 PM CDT | Mesoscale Discussion | SPC | Bailey, Borden, Cochran, Crosby, Dickens, Floyd and 12 more | 91 min |
| Jun 3, 5:09 PM CDT | Mesoscale Discussion | SPC | Andrews, Brewster, Crane, Culberson, Ector, Gaines and 14 more | 66 min |
| Jun 3, 5:45 PM CDT | Severe Thunderstorm Watch | SPC | Austin, Bastrop, Bell, Blanco, Brazoria, Brazos and 37 more | 7 hr |
| Jun 3, 5:51 PM CDT | Mesoscale Discussion | SPC | Brown, Coke, Coleman, Concho, Crockett, Irion and 10 more | 54 min |
| Jun 3, 6:47 PM CDT | Mesoscale Discussion | SPC | Bailey, Castro, Cochran, Dallam, Deaf Smith, Hale and 10 more | 58 min |
Nearby
Severe Thunderstorm Watches in Louisiana, 2007Severe Thunderstorm Watches in Texas, 2007Every severe thunderstorm watch in 2007
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.